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springboot-@valid+@bingdingResult进行controller参数校验_public int register

作者：IT小白 | 2024-06-13 17:35:03

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public int register

项目代码已上传至github:https://github.com/snowlavenderlove/springbootValidator.git

1.创建数据库spring_validator,并建表user,表结构如图

2.通过https://start.spring.io/官网创建项目springbootValidator,项目结构如图，创建项目教程可参考博文：https://blog.csdn.net/qq_37231511/article/details/90669242

3.pom.xml中添加logging/druid/validator依赖，此处放全

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  3. 	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  4. 	<modelVersion>4.0.0</modelVersion>
  5. 	<parent>
  6. 		<groupId>org.springframework.boot</groupId>
  7. 		<artifactId>spring-boot-starter-parent</artifactId>
  8. 		<version>1.5.2.RELEASE</version>
  9. 		<relativePath/> <!-- lookup parent from repository -->
  10. 	</parent>
  11. 	<groupId>com.xue</groupId>
  12. 	<artifactId>springbootValidator</artifactId>
  13. 	<version>0.0.1-SNAPSHOT</version>
  14. 	<name>springbootValidator</name>
  15. 	<description>Demo project for Spring Boot</description>
  16.  
  17. 	<properties>
  18. 		<java.version>1.8</java.version>
  19. 		<maven-jar-plugin.version>3.0.0</maven-jar-plugin.version>
  20. 	</properties>
  21.  
  22. 	<dependencies>
  23. 		<dependency>
  24. 			<groupId>org.springframework.boot</groupId>
  25. 			<artifactId>spring-boot-starter-data-jpa</artifactId>
  26. 		</dependency>
  27. 		<dependency>
  28. 			<groupId>org.springframework.boot</groupId>
  29. 			<artifactId>spring-boot-starter-web</artifactId>
  30. 		</dependency>
  31. 		<dependency>
  32. 			<groupId>org.mybatis.spring.boot</groupId>
  33. 			<artifactId>mybatis-spring-boot-starter</artifactId>
  34. 			<version>1.3.0</version>
  35. 		</dependency>
  36.  
  37. 		<dependency>
  38. 			<groupId>mysql</groupId>
  39. 			<artifactId>mysql-connector-java</artifactId>
  40. 			<scope>runtime</scope>
  41. 		</dependency>
  42. 		<dependency>
  43. 			<groupId>org.springframework.boot</groupId>
  44. 			<artifactId>spring-boot-starter-test</artifactId>
  45. 			<scope>test</scope>
  46. 		</dependency>
  47. 		<dependency>
  48. 		    <groupId>commons-logging</groupId>
  49. 		    <artifactId>commons-logging</artifactId>
  50. 		    <version>1.2</version>
  51. 		</dependency>
  52. 		<dependency>
  53. 		    <groupId>com.alibaba</groupId>
  54. 		    <artifactId>druid</artifactId>
  55. 		    <version>1.1.17</version>
  56. 		</dependency>
  57. 		<dependency>
  58. 		    <groupId>org.hibernate.validator</groupId>
  59. 		    <artifactId>hibernate-validator</artifactId>
  60. 		    <version>6.0.16.Final</version>
  61. 		</dependency>
  62. 		<dependency>
  63. 			<groupId>org.springframework.boot</groupId>
  64. 			<artifactId>spring-boot-starter-thymeleaf</artifactId>
  65. 		</dependency>
  66. 	</dependencies>
  67.  
  68. 	<build>
  69. 		<plugins>
  70. 			<plugin>
  71. 				<groupId>org.springframework.boot</groupId>
  72. 				<artifactId>spring-boot-maven-plugin</artifactId>
  73. 			</plugin>
  74. 		</plugins>
  75. 	</build>
  76.  
  77. </project>

4.通过generator-mybatis创建代码，教程可见博文：https://blog.csdn.net/qq_37231511/article/details/90692784，创建完后放到项目中如图：

 

5.编辑application.properies文件

 

  1. #mysql
  2. spring.datasource.driver-class-name=com.mysql.jdbc.Driver
  3. spring.datasource.url=jdbc:mysql://127.0.0.1:3306/spring_validator
  4. spring.datasource.username=root
  5. spring.datasource.password=123456
  6.  
  7. #druid
  8. spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
  9. #dao
  10. mybatis.type-aliases-package==com.xue.repository.dao
  11. mybatis.mapper-locations=classpath*:com/xue/repository/mapper/*.xml
  12.

6.在entity下创建包http,并创建UserReqBean和UserResBean,代码分别为：

  1. package com.xue.entity.http;
  2.  
  3. import javax.validation.constraints.Size;
  4.  
  5. import org.hibernate.validator.constraints.NotEmpty;
  6.  
  7. public class UserReqBean {
  8. 	/**
  9. 	 * 在实体类上写上相关验证信息
  10. 	 */
  11.     private Integer id;
  12.     @NotEmpty(message = "用户名不能为空！")
  13.     private String name;
  14.     @Size(min=3,max=10,message = "密码长度在3到10位")
  15.     private String pwd;
  16.  
  17.     public Integer getId() {
  18.         return id;
  19.     }
  20.  
  21.     public void setId(Integer id) {
  22.         this.id = id;
  23.     }
  24.  
  25.     public String getName() {
  26.         return name;
  27.     }
  28.  
  29.     public void setName(String name) {
  30.         this.name = name == null ? null : name.trim();
  31.     }
  32.  
  33.     public String getPwd() {
  34.         return pwd;
  35.     }
  36.  
  37.     public void setPwd(String pwd) {
  38.         this.pwd = pwd == null ? null : pwd.trim();
  39.     }
  40.  
  41. 	@Override
  42. 	public String toString() {
  43. 		return "UserReqBean [id=" + id + ", name=" + name + ", pwd=" + pwd + "]";
  44. 	}
  45.     
  46.     
  47.  
  48. }
  1. package com.xue.entity.http;
  2.  
  3. public class UserResBean {
  4. 	
  5.     private Integer id;
  6.  
  7.     private String name;
  8.  
  9.     private String pwd;
  10.  
  11.     public Integer getId() {
  12.         return id;
  13.     }
  14.  
  15.     public void setId(Integer id) {
  16.         this.id = id;
  17.     }
  18.  
  19.     public String getName() {
  20.         return name;
  21.     }
  22.  
  23.     public void setName(String name) {
  24.         this.name = name == null ? null : name.trim();
  25.     }
  26.  
  27.     public String getPwd() {
  28.         return pwd;
  29.     }
  30.  
  31.     public void setPwd(String pwd) {
  32.         this.pwd = pwd == null ? null : pwd.trim();
  33.     }
  34.  
  35.  
  36. }

 7.创建controller包，新建UserController

  1. package com.xue.controller;
  2.  
  3. import java.util.List;
  4.  
  5. import javax.validation.Valid;
  6.  
  7. import org.springframework.beans.factory.annotation.Autowired;
  8. import org.springframework.stereotype.Controller;
  9. import org.springframework.validation.BindingResult;
  10. import org.springframework.validation.ObjectError;
  11. import org.springframework.web.bind.annotation.RequestBody;
  12. import org.springframework.web.bind.annotation.RequestMapping;
  13. import org.springframework.web.bind.annotation.ResponseBody;
  14.  
  15. import com.xue.entity.http.UserReqBean;
  16. import com.xue.entity.http.UserResBean;
  17. import com.xue.service.UserService;
  18.  
  19. @Controller
  20. public class UserController {
  21. 	
  22. 	@Autowired
  23. 	private UserService userService;
  24. 	
  25. 	@RequestMapping("/loginHtml")
  26. 	public String loginHtml(){
  27. 		
  28. 		return "loginHtml";
  29. 	}
  30. 	
  31. 	@RequestMapping("/registerHtml")
  32. 	public String registerHtml(){
  33. 		
  34. 		return "registerHtml";
  35. 	}
  36. 	/**
  37. 	 * 注意的是@Valid 和 BindingResult 是一 一对应的
  38. 	 * 如果有多个@Valid，那么每个@Valid后面都需要添加BindingResult用于接收bean中的校验信息
  39. 	 */
  40. 	
  41. 	@RequestMapping("/login")
  42. 	@ResponseBody
  43. 	public String login(@Valid @RequestBody UserReqBean inparam,BindingResult bingdingResult){
  44. 		
  45. 		if(bingdingResult.hasErrors()){
  46. 			List<ObjectError> ls=bingdingResult.getAllErrors();  
  47.             for (int i = 0; i < ls.size(); i++) {  
  48.                 System.out.println("error:"+ls.get(i));  
  49.             }
  50. 		}
  51. 		
  52. 		UserResBean res = userService.login(inparam);
  53. 		
  54. 		System.out.println(inparam);
  55. 		
  56. 		if(null != res){
  57. 			return "登陆成功,用户名："+res.getName()+"   密码"+res.getPwd();
  58. 		}else{
  59. 			return "登陆失败";
  60. 		}
  61. 		
  62. 		
  63. 	}
  64. 	/**
  65. 	 * 注意的是@Valid 和 BindingResult 是一 一对应的
  66. 	 * 如果有多个@Valid，那么每个@Valid后面都需要添加BindingResult用于接收bean中的校验信息
  67. 	 */
  68. 	@RequestMapping("/register")
  69. 	@ResponseBody
  70. 	public String register(@Valid @RequestBody UserReqBean inparam,BindingResult bingdingResult){
  71. 		
  72. 		System.out.println("进入入口--------------------------");
  73. 		
  74. 		if(bingdingResult.hasErrors()){
  75. 			List<ObjectError> ls=bingdingResult.getAllErrors();  
  76.             for (int i = 0; i < ls.size(); i++) {  
  77.                 System.out.println("error:"+ls.get(i));  
  78.             }
  79. 		}
  80. 		
  81. 		int result = userService.register(inparam);
  82. 		
  83. 		if(0 != result){
  84. 			return "注册成功";
  85. 			
  86. 		}else{
  87. 			return "注册失败";
  88. 		}
  89. 		
  90. 		
  91. 	}
  92. 	
  93.  
  94.  
  95.  
  96. }
  97.

8.创建service包，创建UserService接口与UserServiceImpl实现类，代码分别为

  1. package com.xue.service;
  2.  
  3. import com.xue.entity.http.UserReqBean;
  4. import com.xue.entity.http.UserResBean;
  5.  
  6. public interface UserService {
  7. 	
  8. //	增
  9. 	
  10. 	public int register(UserReqBean user);
  11. //  查
  12. 	
  13. 	public UserResBean login(UserReqBean user);
  14.  
  15. }

 

  1. package com.xue.service.Impl;
  2.  
  3. import java.util.HashMap;
  4. import java.util.Map;
  5.  
  6. import org.springframework.beans.factory.annotation.Autowired;
  7. import org.springframework.stereotype.Service;
  8.  
  9. import com.xue.entity.http.UserReqBean;
  10. import com.xue.entity.http.UserResBean;
  11. import com.xue.entity.model.User;
  12. import com.xue.repository.dao.UserMapper;
  13. import com.xue.service.UserService;
  14. @Service
  15. public class UserServiceImpl implements UserService {
  16. 	
  17. 	@Autowired
  18. 	private UserMapper userMapper;
  19.  
  20. 	@Override
  21. 	public int register(UserReqBean data) {
  22. 		
  23. 		int result = 0;
  24. 		
  25. 		User user = new User();
  26. 		user.setName(data.getName());
  27. 		user.setPwd(data.getPwd());
  28. 		
  29. 		try {
  30. 			result = userMapper.insertUser(user);
  31. 		} catch (Exception e) {
  32. 			// TODO Auto-generated catch block
  33. 			e.printStackTrace();
  34. 		}
  35. 		
  36. 		return result;
  37. 	}
  38.  
  39. 	@Override
  40. 	public UserResBean login(UserReqBean data) {
  41. 		UserResBean res = null;
  42. 		res = new UserResBean();
  43. 		User user = null;
  44. 		Map<String,Object> params = new HashMap<String,Object>();
  45. 		
  46. 		params.put("name", data.getName());
  47. 		
  48. 		params.put("pwd", data.getPwd());
  49. 		
  50. 		
  51. 		try {
  52. 			 user = userMapper.selectUser(params);
  53. 		} catch (Exception e) {
  54. 			// TODO Auto-generated catch block
  55. 			e.printStackTrace();
  56. 		}
  57. 		
  58. 		
  59. 		
  60. 		if(null != user){
  61. 			res.setName(user.getName());
  62. 			res.setPwd(user.getPwd());
  63. 			
  64. 			return res;
  65. 		}
  66. 		
  67. 		
  68. 		
  69. 		return res;
  70. 	}
  71. 	
  72. 	
  73.  
  74. }
  75.

9.编辑UserMapper.java，在代码最后添加

  1.     int insertUser(User user);
  2.     
  3.     User selectUser(Map<String,Object> inparams);

 10.编辑UserMapper.xml，在代码最后添加

  1.   <select id="selectUser" parameterType="com.xue.entity.model.User" resultMap="BaseResultMap">
  2. 	select name,pwd from user where name =#{name} and pwd = #{pwd}
  3.   </select>
  4.   <insert id="insertUser" parameterType="com.xue.entity.model.User">
  5. 	insert into user(name,pwd) values(#{name},#{pwd})
  6.   </insert>

 11.代码到此结束，最终项目结构为

12.通过后台接口测试软件输入正常的数据进行测试register接口

 13.通过后台接口测试软件输入不符合规则的数据进行测试register接口，如图：后台打印出了信息

 

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