调用post请求方式的feign接口怎么传递多个参数，包含对象和字符串_feign下post请求传递参数

今天尝试把自己原来的项目上的权限管理相关的类抽离开来，并建立一个统一的权限管理平台，然后项目中要用到的权限相关资源通过feigin请求权限平台的对应接口获取。

现在有一个需求，页面上有一个一键获取资源权限的按钮，点击一下，在后台完成控制器接口的扫描，自动添加对应资源（先从数据库删除原来的资源）。

这个接口的代码

package cn.edu.sgu.www.mhxysy.service.system.impl;
 
import cn.edu.sgu.www.mhxysy.base.Pager;
import cn.edu.sgu.www.mhxysy.entity.system.Permission;
import cn.edu.sgu.www.mhxysy.mapper.system.PermissionMapper;
import cn.edu.sgu.www.mhxysy.pager.system.PermissionPager;
import cn.edu.sgu.www.mhxysy.service.system.PermissionService;
import cn.edu.sgu.www.mhxysy.util.ResourceScanner;
import cn.edu.sgu.www.mhxysy.util.StringUtils;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
 
import java.util.List;
 
/**
 * @author heyunlin
 * @version 1.0
 */
@Service
public class PermissionServiceImpl implements PermissionService {
    @Value("${spring.application.name}")
    private String SERVICE_NAME;
 
    private final PermissionMapper mapper;
    private final ResourceScanner resourceScanner;
 
    public PermissionServiceImpl(PermissionMapper mapper, ResourceScanner resourceScanner) {
        this.mapper = mapper;
        this.resourceScanner = resourceScanner;
    }
 
    @Override
    public void init() throws ClassNotFoundException {
        // 删除指定服务的权限
        mapper.deleteByService(SERVICE_NAME);
 
        // 扫描路径
        String basePackage = "cn.edu.sgu.www.mhxysy.controller";
 
        // 获取扫描结果
        List<Permission> resources = resourceScanner.scan(basePackage);
 
        // 保存资源到数据库
        for (Permission permission : resources) {
            if (permission.getName() != null) {
                mapper.insert(permission);
            }
        }
    }
 
}

ResourceScanner这个类负责扫描controller包下的所有控制器的信息并封装成一个个Permission。

扫描的操作是在当前项目下完成，权限平台的接口只需要完成权限的删除和新权限的添加。

重构后的代码：

package cn.edu.sgu.www.mhxysy.service.system.impl;
 
import cn.edu.sgu.www.mhxysy.base.Pager;
import cn.edu.sgu.www.mhxysy.entity.system.Permission;
import cn.edu.sgu.www.mhxysy.feign.FeignService;
import cn.edu.sgu.www.mhxysy.mapper.system.PermissionMapper;
import cn.edu.sgu.www.mhxysy.pager.system.PermissionPager;
import cn.edu.sgu.www.mhxysy.service.system.PermissionService;
import cn.edu.sgu.www.mhxysy.util.ResourceScanner;
import cn.edu.sgu.www.mhxysy.util.StringUtils;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
 
import java.util.HashMap;
import java.util.List;
import java.util.Map;
 
/**
 * @author heyunlin
 * @version 1.0
 */
@Service
public class PermissionServiceImpl implements PermissionService {
    @Value("${spring.application.name}")
    private String SERVICE_NAME;
 
    private final FeignService feignService;
    private final ResourceScanner resourceScanner;
    private final PermissionMapper permissionMapper;
 
    public PermissionServiceImpl(
        FeignService feignService,
        ResourceScanner resourceScanner,
        PermissionMapper permissionMapper
    ) {
        this.feignService = feignService;
        this.permissionMapper = permissionMapper;
        this.resourceScanner = resourceScanner;
    }
 
    @Override
    public void init() throws ClassNotFoundException {
        // 删除指定服务的权限
        permissionMapper.deleteByService(SERVICE_NAME);
 
        // 扫描路径
        String basePackage = "cn.edu.sgu.www.mhxysy.controller";
 
        // 获取扫描结果
        List<Permission> resources = resourceScanner.scan(basePackage);
 
        feignService.init(SERVICE_NAME, resources);
    }
 
}

feign接口

package cn.edu.sgu.www.mhxysy.feign;
 
import cn.edu.sgu.www.mhxysy.component.MenuTree;
import cn.edu.sgu.www.mhxysy.entity.system.Permission;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
 
import java.util.List;
import java.util.Map;
 
/**
 * @author heyunlin
 * @version 1.0
 */
@FeignClient(name = "authority", fallback = FeignFallback.class)
public interface FeignService {
 
    @RequestMapping(value = "/menu/listTree", method = RequestMethod.GET)
    Map<String, List<MenuTree>> listTree(@RequestParam("userId") String userId);
 
    @RequestMapping(value = "/permission/init", method = RequestMethod.POST)
    void init(String service, List<Permission> permissions);
}

这里直接通过post请求传递两个参数，权限平台对应的接口代码如下

package cn.edu.sgu.www.authority.controller;
 
import cn.edu.sgu.www.authority.entity.Permission;
import cn.edu.sgu.www.authority.pager.PermissionPager;
import cn.edu.sgu.www.authority.restful.JsonResult;
import cn.edu.sgu.www.authority.restful.PageResult;
import cn.edu.sgu.www.authority.service.PermissionService;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
 
import java.util.List;
 
@RestController
@Api(tags = "权限控制器类")
@RequestMapping(path = "/permission", produces = "application/json;charset=utf-8")
public class PermissionController {
    private final PermissionService permissionService;
 
    @Autowired
    public PermissionController(PermissionService service) {
        this.permissionService = service;
    }
 
    @ApiOperation("初始化权限列表")
    @RequestMapping(value = "/init", method = RequestMethod.POST)
    public JsonResult<Void> init(String service, List<Permission> permissions) throws ClassNotFoundException {
        permissionService.init(service, permissions);
 
        return JsonResult.success("权限列表初始化完成。");
    }
 
}

业务层代码

package cn.edu.sgu.www.authority.service.impl;
 
import cn.edu.sgu.www.authority.base.Pager;
import cn.edu.sgu.www.authority.entity.Permission;
import cn.edu.sgu.www.authority.mapper.PermissionMapper;
import cn.edu.sgu.www.authority.pager.PermissionPager;
import cn.edu.sgu.www.authority.service.PermissionService;
import cn.edu.sgu.www.authority.util.StringUtils;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import org.springframework.stereotype.Service;
 
import java.util.List;
 
/**
 * @author heyunlin
 * @version 1.0
 */
@Service
public class PermissionServiceImpl implements PermissionService {
    private final PermissionMapper mapper;
 
    public PermissionServiceImpl(PermissionMapper mapper) {
        this.mapper = mapper;
    }
 
    @Override
    public void init(String service, List<Permission> permissions) {
        // 删除指定服务的权限
        mapper.deleteByService(service);
 
        // 保存资源到数据库
        for (Permission permission : permissions) {
            if (permission.getName() != null) {
                mapper.insert(permission);
            }
        }
    }
 
}

这个时候项目启动直接报错，看到这一堆报错是不是头都大了

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'shiroFilter' defined in class path resource [cn/edu/sgu/www/mhxysy/config/ShiroConfig.class]: Unsatisfied dependency expressed through method 'shiroFilter' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'securityManager' defined in class path resource [cn/edu/sgu/www/mhxysy/config/ShiroConfig.class]: Unsatisfied dependency expressed through method 'securityManager' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userRealm': Unsatisfied dependency expressed through field 'adminService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userServiceImpl' defined in file [D:\program\IdeaProjects\mhxysy\target\classes\cn\edu\sgu\www\mhxysy\service\system\impl\UserServiceImpl.class]: Unsatisfied dependency expressed through constructor parameter 1; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'redisRepository' defined in file [D:\program\IdeaProjects\mhxysy\target\classes\cn\edu\sgu\www\mhxysy\redis\RedisRepository.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'permissionServiceImpl' defined in file [D:\program\IdeaProjects\mhxysy\target\classes\cn\edu\sgu\www\mhxysy\service\system\impl\PermissionServiceImpl.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cn.edu.sgu.www.mhxysy.feign.FeignService': Unexpected exception during bean creation; nested exception is java.lang.IllegalStateException: Method has too many Body parameters: public abstract void cn.edu.sgu.www.mhxysy.feign.FeignService.init(java.lang.String,java.util.List)
Warnings:
- 
	at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:797) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:538) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1336) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1176) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:556) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:207) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.context.support.PostProcessorRegistrationDelegate.registerBeanPostProcessors(PostProcessorRegistrationDelegate.java:241) ~[spring-context-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.registerBeanPostProcessors(AbstractApplicationContext.java:723) ~[spring-context-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:536) ~[spring-context-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143) ~[spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758) [spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) [spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237) [spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.3.4.RELEASE.jar:2.3.4.RELEASE]
	at cn.edu.sgu.www.mhxysy.MhxysyApplication.main(MhxysyApplication.java:26) [classes/:na]
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'securityManager' defined in class path resource [cn/edu/sgu/www/mhxysy/config/ShiroConfig.class]: Unsatisfied dependency expressed through method 'securityManager' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userRealm': Unsatisfied dependency expressed through field 'adminService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userServiceImpl' defined in file [D:\program\IdeaProjects\mhxysy\target\classes\cn\edu\sgu\www\mhxysy\service\system\impl\UserServiceImpl.class]: Unsatisfied dependency expressed through constructor parameter 1; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'redisRepository' defined in file [D:\program\IdeaProjects\mhxysy\target\classes\cn\edu\sgu\www\mhxysy\redis\RedisRepository.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'permissionServiceImpl' defined in file [D:\program\IdeaProjects\mhxysy\target\classes\cn\edu\sgu\www\mhxysy\service\system\impl\PermissionServiceImpl.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cn.edu.sgu.www.mhxysy.feign.FeignService': Unexpected exception during bean creation; nested exception is java.lang.IllegalStateException: Method has too many Body parameters: public abstract void cn.edu.sgu.www.mhxysy.feign.FeignService.init(java.lang.String,java.util.List)
Warnings:
- 
	at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:797) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:538) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1336) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1176) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:556) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1307) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1227) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:884) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:788) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	... 20 common frames omitted
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userRealm': Unsatisfied dependency expressed through field 'adminService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userServiceImpl' defined in file [D:\program\IdeaProjects\mhxysy\target\classes\cn\edu\sgu\www\mhxysy\service\system\impl\UserServiceImpl.class]: Unsatisfied dependency expressed through constructor parameter 1; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'redisRepository' defined in file [D:\program\IdeaProjects\mhxysy\target\classes\cn\edu\sgu\www\mhxysy\redis\RedisRepository.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'permissionServiceImpl' defined in file [D:\program\IdeaProjects\mhxysy\target\classes\cn\edu\sgu\www\mhxysy\service\system\impl\PermissionServiceImpl.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cn.edu.sgu.www.mhxysy.feign.FeignService': Unexpected exception during bean creation; nested exception is java.lang.IllegalStateException: Method has too many Body parameters: public abstract void cn.edu.sgu.www.mhxysy.feign.FeignService.init(java.lang.String,java.util.List)
Warnings:
- 
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:643) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1420) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:593) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1307) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1227) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:884) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:788) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	... 34 common frames omitted
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userServiceImpl' defined in file [D:\program\IdeaProjects\mhxysy\target\classes\cn\edu\sgu\www\mhxysy\service\system\impl\UserServiceImpl.class]: Unsatisfied dependency expressed through constructor parameter 1; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'redisRepository' defined in file [D:\program\IdeaProjects\mhxysy\target\classes\cn\edu\sgu\www\mhxysy\redis\RedisRepository.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'permissionServiceImpl' defined in file [D:\program\IdeaProjects\mhxysy\target\classes\cn\edu\sgu\www\mhxysy\service\system\impl\PermissionServiceImpl.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cn.edu.sgu.www.mhxysy.feign.FeignService': Unexpected exception during bean creation; nested exception is java.lang.IllegalStateException: Method has too many Body parameters: public abstract void cn.edu.sgu.www.mhxysy.feign.FeignService.init(java.lang.String,java.util.List)
Warnings:
- 
	at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:797) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:227) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1356) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1203) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:556) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1307) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1227) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	... 48 common frames omitted
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'redisRepository' defined in file [D:\program\IdeaProjects\mhxysy\target\classes\cn\edu\sgu\www\mhxysy\redis\RedisRepository.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'permissionServiceImpl' defined in file [D:\program\IdeaProjects\mhxysy\target\classes\cn\edu\sgu\www\mhxysy\service\system\impl\PermissionServiceImpl.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cn.edu.sgu.www.mhxysy.feign.FeignService': Unexpected exception during bean creation; nested exception is java.lang.IllegalStateException: Method has too many Body parameters: public abstract void cn.edu.sgu.www.mhxysy.feign.FeignService.init(java.lang.String,java.util.List)
Warnings:
- 
	at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:797) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:227) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1356) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1203) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:556) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1307) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1227) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:884) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:788) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	... 61 common frames omitted
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'permissionServiceImpl' defined in file [D:\program\IdeaProjects\mhxysy\target\classes\cn\edu\sgu\www\mhxysy\service\system\impl\PermissionServiceImpl.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cn.edu.sgu.www.mhxysy.feign.FeignService': Unexpected exception during bean creation; nested exception is java.lang.IllegalStateException: Method has too many Body parameters: public abstract void cn.edu.sgu.www.mhxysy.feign.FeignService.init(java.lang.String,java.util.List)
Warnings:
- 
	at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:797) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:227) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1356) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1203) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:556) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1307) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1227) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:884) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:788) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	... 75 common frames omitted
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cn.edu.sgu.www.mhxysy.feign.FeignService': Unexpected exception during bean creation; nested exception is java.lang.IllegalStateException: Method has too many Body parameters: public abstract void cn.edu.sgu.www.mhxysy.feign.FeignService.init(java.lang.String,java.util.List)
Warnings:
- 
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:529) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1307) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1227) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:884) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:788) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	... 89 common frames omitted
Caused by: java.lang.IllegalStateException: Method has too many Body parameters: public abstract void cn.edu.sgu.www.mhxysy.feign.FeignService.init(java.lang.String,java.util.List)
Warnings:
- 
	at feign.Util.checkState(Util.java:129) ~[feign-core-10.12.jar:na]
	at feign.Contract$BaseContract.parseAndValidateMetadata(Contract.java:127) ~[feign-core-10.12.jar:na]
	at org.springframework.cloud.openfeign.support.SpringMvcContract.parseAndValidateMetadata(SpringMvcContract.java:207) ~[spring-cloud-openfeign-core-2.2.9.RELEASE.jar:2.2.9.RELEASE]
	at feign.Contract$BaseContract.parseAndValidateMetadata(Contract.java:62) ~[feign-core-10.12.jar:na]
	at feign.hystrix.HystrixDelegatingContract.parseAndValidateMetadata(HystrixDelegatingContract.java:47) ~[feign-hystrix-10.12.jar:na]
	at feign.ReflectiveFeign$ParseHandlersByName.apply(ReflectiveFeign.java:151) ~[feign-core-10.12.jar:na]
	at feign.ReflectiveFeign.newInstance(ReflectiveFeign.java:49) ~[feign-core-10.12.jar:na]
	at feign.hystrix.HystrixFeign$Builder.target(HystrixFeign.java:63) ~[feign-hystrix-10.12.jar:na]
	at org.springframework.cloud.openfeign.HystrixTargeter.targetWithFallback(HystrixTargeter.java:74) ~[spring-cloud-openfeign-core-2.2.9.RELEASE.jar:2.2.9.RELEASE]
	at org.springframework.cloud.openfeign.HystrixTargeter.target(HystrixTargeter.java:49) ~[spring-cloud-openfeign-core-2.2.9.RELEASE.jar:2.2.9.RELEASE]
	at org.springframework.cloud.openfeign.FeignClientFactoryBean.loadBalance(FeignClientFactoryBean.java:352) ~[spring-cloud-openfeign-core-2.2.9.RELEASE.jar:2.2.9.RELEASE]
	at org.springframework.cloud.openfeign.FeignClientFactoryBean.getTarget(FeignClientFactoryBean.java:388) ~[spring-cloud-openfeign-core-2.2.9.RELEASE.jar:2.2.9.RELEASE]
	at org.springframework.cloud.openfeign.FeignClientFactoryBean.getObject(FeignClientFactoryBean.java:361) ~[spring-cloud-openfeign-core-2.2.9.RELEASE.jar:2.2.9.RELEASE]
	at org.springframework.cloud.openfeign.FeignClientsRegistrar.lambda$registerFeignClient$0(FeignClientsRegistrar.java:246) ~[spring-cloud-openfeign-core-2.2.9.RELEASE.jar:2.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.obtainFromSupplier(AbstractAutowireCapableBeanFactory.java:1230) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1172) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:556) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	... 98 common frames omitted

其实遇到这种情况，只需要找到问题的根源，也就是最后一个cause by

Caused by: java.lang.IllegalStateException: Method has too many Body parameters: public abstract void cn.edu.sgu.www.mhxysy.feign.FeignService.init(java.lang.String,java.util.List)
Warnings:
- 
	at feign.Util.checkState(Util.java:129) ~[feign-core-10.12.jar:na]
	at feign.Contract$BaseContract.parseAndValidateMetadata(Contract.java:127) ~[feign-core-10.12.jar:na]
	at org.springframework.cloud.openfeign.support.SpringMvcContract.parseAndValidateMetadata(SpringMvcContract.java:207) ~[spring-cloud-openfeign-core-2.2.9.RELEASE.jar:2.2.9.RELEASE]
	at feign.Contract$BaseContract.parseAndValidateMetadata(Contract.java:62) ~[feign-core-10.12.jar:na]
	at feign.hystrix.HystrixDelegatingContract.parseAndValidateMetadata(HystrixDelegatingContract.java:47) ~[feign-hystrix-10.12.jar:na]
	at feign.ReflectiveFeign$ParseHandlersByName.apply(ReflectiveFeign.java:151) ~[feign-core-10.12.jar:na]
	at feign.ReflectiveFeign.newInstance(ReflectiveFeign.java:49) ~[feign-core-10.12.jar:na]
	at feign.hystrix.HystrixFeign$Builder.target(HystrixFeign.java:63) ~[feign-hystrix-10.12.jar:na]
	at org.springframework.cloud.openfeign.HystrixTargeter.targetWithFallback(HystrixTargeter.java:74) ~[spring-cloud-openfeign-core-2.2.9.RELEASE.jar:2.2.9.RELEASE]
	at org.springframework.cloud.openfeign.HystrixTargeter.target(HystrixTargeter.java:49) ~[spring-cloud-openfeign-core-2.2.9.RELEASE.jar:2.2.9.RELEASE]
	at org.springframework.cloud.openfeign.FeignClientFactoryBean.loadBalance(FeignClientFactoryBean.java:352) ~[spring-cloud-openfeign-core-2.2.9.RELEASE.jar:2.2.9.RELEASE]
	at org.springframework.cloud.openfeign.FeignClientFactoryBean.getTarget(FeignClientFactoryBean.java:388) ~[spring-cloud-openfeign-core-2.2.9.RELEASE.jar:2.2.9.RELEASE]
	at org.springframework.cloud.openfeign.FeignClientFactoryBean.getObject(FeignClientFactoryBean.java:361) ~[spring-cloud-openfeign-core-2.2.9.RELEASE.jar:2.2.9.RELEASE]
	at org.springframework.cloud.openfeign.FeignClientsRegistrar.lambda$registerFeignClient$0(FeignClientsRegistrar.java:246) ~[spring-cloud-openfeign-core-2.2.9.RELEASE.jar:2.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.obtainFromSupplier(AbstractAutowireCapableBeanFactory.java:1230) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1172) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:556) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516) ~[spring-beans-5.2.9.RELEASE.jar:5.2.9.RELEASE]
	... 98 common frames omitted

这里的关键是这一句，方法有太多body参数，显然，post请求只能有一个请求体

Method has too many Body parameters

既然这样，我们就把两个参数封装成一个类不就行了：创建一个PermissionDTO类

package cn.edu.sgu.www.mhxysy.dto.system;
 
import cn.edu.sgu.www.mhxysy.entity.system.Permission;
import lombok.Data;
 
import java.util.List;
 
/**
 * @author heyunlin
 * @version 1.0
 */
@Data
public class PermissionDTO {
    /**
     * 服务名称
     */
    String service;
 
    /**
     * 权限列表
     */
    List<Permission> permissions;
}

修改之后的代码

package cn.edu.sgu.www.mhxysy.service.system.impl;
 
import cn.edu.sgu.www.mhxysy.base.Pager;
import cn.edu.sgu.www.mhxysy.dto.system.PermissionDTO;
import cn.edu.sgu.www.mhxysy.entity.system.Permission;
import cn.edu.sgu.www.mhxysy.feign.FeignService;
import cn.edu.sgu.www.mhxysy.mapper.system.PermissionMapper;
import cn.edu.sgu.www.mhxysy.pager.system.PermissionPager;
import cn.edu.sgu.www.mhxysy.service.system.PermissionService;
import cn.edu.sgu.www.mhxysy.util.ResourceScanner;
import cn.edu.sgu.www.mhxysy.util.StringUtils;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
 
import java.util.List;
 
/**
 * @author heyunlin
 * @version 1.0
 */
@Service
public class PermissionServiceImpl implements PermissionService {
    @Value("${spring.application.name}")
    private String SERVICE_NAME;
 
    private final FeignService feignService;
    private final ResourceScanner resourceScanner;
    private final PermissionMapper permissionMapper;
 
    public PermissionServiceImpl(
        FeignService feignService,
        ResourceScanner resourceScanner,
        PermissionMapper permissionMapper
    ) {
        this.feignService = feignService;
        this.permissionMapper = permissionMapper;
        this.resourceScanner = resourceScanner;
    }
 
    @Override
    public void init() throws ClassNotFoundException {
        // 扫描路径
        String basePackage = "cn.edu.sgu.www.mhxysy.controller";
        // 获取扫描结果
        List<Permission> permissions = resourceScanner.scan(basePackage);
 
        PermissionDTO permissionDTO = new PermissionDTO();
 
        permissionDTO.setService(SERVICE_NAME);
        permissionDTO.setPermissions(permissions);
 
        feignService.init(permissionDTO);
    }
 
}

 对应的feign接口参数修改为一个PermissionDTO对象

package cn.edu.sgu.www.mhxysy.feign;
 
import cn.edu.sgu.www.mhxysy.component.MenuTree;
import cn.edu.sgu.www.mhxysy.dto.system.PermissionDTO;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
 
import java.util.List;
import java.util.Map;
 
/**
 * @author heyunlin
 * @version 1.0
 */
@FeignClient(name = "authority", fallback = FeignFallback.class)
public interface FeignService {
 
    @RequestMapping(value = "/menu/listTree", method = RequestMethod.GET)
    Map<String, List<MenuTree>> listTree(@RequestParam("userId") String userId);
 
    @RequestMapping(value = "/permission/init", method = RequestMethod.POST)
    void init(PermissionDTO permissionDTO);
}

权限平台的相关代码修改

控制器

@ApiOperation("初始化权限列表")
@RequestMapping(value = "/init", method = RequestMethod.POST)
public JsonResult<Void> init(PermissionDTO permissionDTO) throws ClassNotFoundException {
    permissionService.init(permissionDTO);

    return JsonResult.success("权限列表初始化完成。");
}

业务层

@Override
public void init(PermissionDTO permissionDTO) {
    String service = permissionDTO.getService();
    List<Permission> permissions = permissionDTO.getPermissions();

    // 删除指定服务的权限
    if (service != null) {
        mapper.deleteByService(service);
    }

    if (!permissions.isEmpty()) {
        // 保存到数据库
        for (Permission permission : permissions) {
            if (permission.getName() != null) {
                mapper.insert(permission);
            }
        }
    }
}

然后重新启动两个项目，启动没有报错了，然后再测试一下，点击初始化按钮，还是报错了

直接看权限平台的报错信息，NPE，没有获取到请求体中对应的参数

java.lang.NullPointerException
	at cn.edu.sgu.www.authority.service.impl.PermissionServiceImpl.init(PermissionServiceImpl.java:104)
	at cn.edu.sgu.www.authority.controller.PermissionController.init(PermissionController.java:84)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190)
	at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138)
	at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:878)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:792)
	at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040)
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
	at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:652)
	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1590)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:748)

加上@RequestBody再试一下

这个时候报了一个不同的错，超过了hystrix超时时间

看一下权限平台的控制台，这时候参数都传过去，删除并插入773数据，说明这种方法可行。

好了，关于feign调用post请求的接口传递多个参数的介绍就分享到这里了，感兴趣的还可以试一下通过Map来传参