SpringBoot 自定义拦截器 HandlerInterceptor 方法没有生效_handlerinterceptor没有生效

 在springBoot 中我自定义了一个拦截器，通过实现：HandlerInterceptor 接口

package com.abs.system.filter;
 
import java.io.PrintWriter;
 
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
 
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.resource.ResourceHttpRequestHandler;
 
import com.abs.system.util.AbsSessionHelper;
import com.abs.system.util.BuildJsonOfObject;
import com.abs.system.util.MSG;
import com.abs.system.util.StrUtil;
 
/**
 * 拦截器
 * 
 * @author wdg
 *
 */
 
public class AbsHandlerInterceptor implements HandlerInterceptor {
 
	private Logger logger = LoggerFactory.getLogger(AbsHandlerInterceptor.class);
	
	long start = System.currentTimeMillis();
 
	@Override
	public boolean preHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse,Object handler) throws Exception {
		if (handler instanceof HandlerMethod) {
			HandlerMethod h = (HandlerMethod) handler;
			logger.info("当前请求接口：{}",h.getMethod().getName());
			if (h.hasMethodAnnotation(NoNeedLogin.class)) {
				return true;
			} else {
				String token = httpServletRequest.getHeader("Authorization");
				if (StrUtil.isNotBlank(AbsSessionHelper.getCurrentUserGuid(token))) {
					return true;
				} else {
					httpServletResponse.setContentType("application/json");
					PrintWriter writer=httpServletResponse.getWriter();
					writer.write(BuildJsonOfObject.getJsonString(MSG.fail, MSG.NOLOGIN).toJSONString());
					return false;
				}
			}
		} else if (handler instanceof ResourceHttpRequestHandler) {
			return true;
		} else {
             return true;
		}
 
	}
 
	@Override
	public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse,
			Object handler, ModelAndView modelAndView) throws Exception {
		System.out.println(start);
 
	}
 
	@Override
	public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse,
			Object o, Exception e) throws Exception {
		System.out.println("***********");
 
	}
}

什么原因，原来我为了解决跨域和资源的访问，实现了：WebMvcConfigurationSupport 

package com.abs.system.filter;
 
import java.util.List;
 
import org.springframework.context.annotation.Configuration;
import org.springframework.web.method.support.HandlerMethodArgumentResolver;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
 
@Configuration
public class AbsWebMvcConfigurerAdapter extends WebMvcConfigurationSupport {
 
	@Override
	protected void addViewControllers(ViewControllerRegistry registry) {
		registry.addRedirectViewController("/", "canvas/index.html");
		registry.addRedirectViewController("/index", "canvas/index.html");
		registry.addRedirectViewController("/index.html", "canvas/index.html");
	}
 
	@Override
	protected void addResourceHandlers(ResourceHandlerRegistry registry) {
		registry.addResourceHandler("/canvas/**").addResourceLocations("classpath:/templates/");
		registry.addResourceHandler("/www/**").addResourceLocations("classpath:/www/");
		registry.addResourceHandler("/db/**").addResourceLocations("classpath:/db/");
		registry.addResourceHandler("/font/**").addResourceLocations("classpath:/font/");
	}
 
	
	
	@Override
	public void addArgumentResolvers(List<HandlerMethodArgumentResolver> argumentResolvers) {
             super.addArgumentResolvers(argumentResolvers);
	         argumentResolvers.add(new AbsHandlerMethodArgumentResolver());
    }
 
 
	@Override
	public void addCorsMappings(CorsRegistry registry) {
 
		// 添加映射路径
		 registry.addMapping("/**")
				// 是否发送Cookie
				.allowCredentials(true)
				// 设置放行哪些原始域 SpringBoot2.4.4下低版本使用.allowedOrigins("*")
				.allowedOrigins("*")
				// 放行哪些请求方式
				.allowedMethods(new String[] { "GET", "POST", "PUT", "DELETE" })
				// .allowedMethods("*") //或者放行全部
				// 放行哪些原始请求头部信息
				.allowedHeaders("*");
 
	}
	
	
 
	
}

为了能走拦截器，我需要把我的拦截器加入到SpringBoot 的拦截器列表中

需要在AbsWebMvcConfigurerAdapter  重新 ：addInterceptors 方法

如下：

package com.abs.system.filter;
 
import java.util.List;
 
import org.springframework.context.annotation.Configuration;
import org.springframework.web.method.support.HandlerMethodArgumentResolver;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
 
@Configuration
public class AbsWebMvcConfigurerAdapter extends WebMvcConfigurationSupport {
 
	@Override
	protected void addViewControllers(ViewControllerRegistry registry) {
		registry.addRedirectViewController("/", "canvas/index.html");
		registry.addRedirectViewController("/index", "canvas/index.html");
		registry.addRedirectViewController("/index.html", "canvas/index.html");
	}
 
	@Override
	protected void addResourceHandlers(ResourceHandlerRegistry registry) {
		registry.addResourceHandler("/canvas/**").addResourceLocations("classpath:/templates/");
		registry.addResourceHandler("/www/**").addResourceLocations("classpath:/www/");
		registry.addResourceHandler("/db/**").addResourceLocations("classpath:/db/");
		registry.addResourceHandler("/font/**").addResourceLocations("classpath:/font/");
	}
 
	
	
	@Override
	public void addArgumentResolvers(List<HandlerMethodArgumentResolver> argumentResolvers) {
             super.addArgumentResolvers(argumentResolvers);
	         argumentResolvers.add(new AbsHandlerMethodArgumentResolver());
    }
 
 
	@Override
	public void addCorsMappings(CorsRegistry registry) {
 
		// 添加映射路径
		 registry.addMapping("/**")
				// 是否发送Cookie
				.allowCredentials(true)
				// 设置放行哪些原始域 SpringBoot2.4.4下低版本使用.allowedOrigins("*")
				.allowedOrigins("*")
				// 放行哪些请求方式
				.allowedMethods(new String[] { "GET", "POST", "PUT", "DELETE" })
				// .allowedMethods("*") //或者放行全部
				// 放行哪些原始请求头部信息
				.allowedHeaders("*");
 
	}
	
	
	
	@Override
	public void addInterceptors(InterceptorRegistry interceptor) {
		    interceptor.addInterceptor(new AbsHandlerInterceptor()).addPathPatterns("/**");
		
	}
	
}

这样再次走接口的时候，就会走拦截器了

希望对你有多帮助