前情提要:本demo是基于springboot+mybatis-plus实现加密,加密为主,全局异常处理,日志处理为辅,而登录密码加密是每个项目中必须要的,密码不可能明文存入数据,这样没有安全性。
涉及的功能,全局异常处理,日志处理,mybatis-plus实现与数据库的交互,密码加密,restful风格
涉及的工具:IDEA,postman,sqlyog(navicat)
1. 首先我们直接看效果吧,如果你不满意,也就没必要看了
如果这正是你想要的效果呢,那你可以继续看下面的内容了
2. 首先,我们看下pom.xml文件
以下依赖为所需的主要依赖
<?xml version="1.0" encoding="UTF-8"?>4.0.0 org.springframework.boot spring-boot-starter-parent 2.2.4.RELEASE com.jgsu springboot_rsa_encryption 0.0.1-SNAPSHOT springboot_encryption Demo project for Spring Boot 1.8 org.springframework.boot spring-boot-starter-web org.springframework.boot spring-boot-starter-test test org.springframework.boot spring-boot-devtools true mysql mysql-connector-java 5.1.47 org.projectlombok lombok 1.16.20 com.alibaba druid-spring-boot-starter 1.1.10 com.baomidou mybatis-plus-boot-starter 3.2.0 org.springframework.boot spring-boot-starter-security 2.1.6.RELEASE com.alibaba fastjson 1.2.51 org.springframework.boot spring-boot-maven-plugin
3. 创建启动类SpringbootEncryptionApplication
import org.mybatis.spring.annotation.MapperScan; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.context.annotation.Bean; import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder; @SpringBootApplication @MapperScan("com.jgsu.mapper") public class SpringbootEncryptionApplication { public static void main(String[] args) { SpringApplication.run(SpringbootEncryptionApplication.class, args); } /** * 将加密工具类加入IOC容器中,便于加密 * */ @Bean public BCryptPasswordEncoder encoder() { return new BCryptPasswordEncoder(); } }
4.实体类
这里只有用户名和密码(其他数据自己可扩展)
@Data @AllArgsConstructor @NoArgsConstructor @TableName("user") public class User { @TableId(value = "id",type = IdType.AUTO) private int id; private String username; private String password; }
5. service层(业务层)
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper; import com.jgsu.entity.User; import com.jgsu.exception.DataAddException; import com.jgsu.exception.DataMatchException; import com.jgsu.mapper.UserMapper; import com.jgsu.service.UserService; import lombok.extern.slf4j.Slf4j; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder; import org.springframework.stereotype.Service; @Slf4j @Service public class UserServiceImpl implements UserService { @Autowired UserMapper userMapper; // 数据加密,在启动类中已经注入进IOC容器中 @Autowired private BCryptPasswordEncoder encoder; @Override public User userLogin(String username,String password) { // mybatis-plus的条件构造器,这里实现根据username查询 QueryWrapperwrapper = new QueryWrapper (); wrapper.eq("username", username); User userLogin = userMapper.selectOne(wrapper); /** * encoder.matches(password, userLogin.getPassword(),实现输入的密码与数据库中的密码进 * 行匹配,如果匹配成功则返回匹配的数据给controller层,如果失败则抛异常。 * 为什么没盐,没有解密了?因为这个已经被CryptPasswordEncoder封装好了, * 在encoder.matches()方进行解密匹配完全帮你封装好了,所以不必考虑, * 只需要将前端传入的密码与数据库中加密后的密码进行匹配就行。 * **/ if (userLogin != null && encoder.matches(password, userLogin.getPassword())) { log.info("用户{},登录成功",username); return userLogin; } else { log.error("用户名或密码错误"); throw new DataMatchException("405", "用户名或密码错误"); } } @Override public User userRegister(String username, String password) { User user = new User(); user.setId(user.getId()); user.setUsername(username); user.setPassword(encoder.encode(password)); int i = userMapper.insert(user); if (i == 1){ log.info("用户{}注册成功",username); return user; }else { log.error("服务器发生异常,注册失败"); throw new DataAddException("403","注册失败"); } } }
6. mapper层
如果不了解,可以建议去看看mybatis-plus官方文档
import com.baomidou.mybatisplus.core.mapper.BaseMapper; import com.jgsu.entity.User; import org.springframework.stereotype.Repository; @Repository public interface UserMapper extends BaseMapper{ }
7.controller层
import com.jgsu.entity.User; import com.jgsu.service.UserService; import com.jgsu.utils.CommonResult; import com.jgsu.utils.ResultCode; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; @RestController @RequestMapping("/user") public class UserController { @Autowired UserService userService; // 注册,基于restful风格 @GetMapping("/register/{username}/{password}") public CommonResult register(@PathVariable("username") String username,@PathVariable("password") String password){ User user = userService.userRegister(username, password); if (user != null){ return CommonResult.success(ResultCode.SUCCESS); }else { return CommonResult.failed(ResultCode.FAILED); } } // 登录,基于restful风格 @GetMapping("/login/{username}/{password}") public CommonResult login(@PathVariable("username") String username,@PathVariable("password") String password) { User userLogin = userService.userLogin(username,password); if (userLogin != null) { return CommonResult.success(ResultCode.SUCCESS); } else { return CommonResult.failed(ResultCode.USERNAME_OR_PASSWORD_ERROR); } } }
8.配置类(返回json数据的类)
封装错误码的接口
public interface IErrorCode { long getState(); String getMessage(); }
枚举了一些常用API操作码
public enum ResultCode implements IErrorCode { /** * 成功 */ SUCCESS(200, "ok"), /** * 失败 */ FAILED(500, "server error"), /** * 验证过期 */ VALIDATE_FAILED(404, "undefined"), /** * 未登录 */ UNAUTHORIZED(401, "未登录"), /** * 用户名或密码错误 */ USERNAME_OR_PASSWORD_ERROR(405, "用户名或密码错误"), /** * 数据查询错误 */ DATA_Not_Exist_ERROR(603, "数据不存在"), /** * 数据添加出现问题 */ DATA_ADD_ERROR(604, "数据添加异常"), /** * 文件 */ FILE_ERROR(605, "上传文件出现错误"), /** * 数据查询出现问题 */ IMAGE_ERROR(606, "图片处理出现错误"), /** * 权限不够 */ FORBIDDEN(403, "forbidden"); private long state; private String stateInfo; ResultCode(long state, String stateInfo) { this.state = state; this.stateInfo = stateInfo; } @Override public long getState() { return state; } @Override public String getMessage() { return stateInfo; } }
通用返回对象
public class CommonResult{ private long state; private String stateInfo; private T data; public CommonResult() { } public CommonResult(long state, String stateInfo, T data) { this.state = state; this.stateInfo = stateInfo; this.data = data; } public CommonResult(long state, String stateInfo) { this.state = state; this.stateInfo = stateInfo; } /** * 成功返回结果 * * @param data 获取的数据 */ public static CommonResult success(T data) { return new CommonResult (ResultCode.SUCCESS.getState(), ResultCode.SUCCESS.getMessage(), data); } /** * 成功返回结果 * @param data 获取的数据 * @param message 提示信息 * @return */ public static CommonResult success(T data, String message) { return new CommonResult (ResultCode.SUCCESS.getState(), message, data); } /** * 失败返回结果 * @param errorCode 错误码 */ public static CommonResult failed(IErrorCode errorCode) { return new CommonResult (errorCode.getState(), errorCode.getMessage(), null); } /** * 失败返回结果 * @param message 提示信息 */ public static CommonResult failed(String message) { return new CommonResult (ResultCode.FAILED.getState(), message, null); } /** * 失败返回结果 * @param code * @param message */ public static CommonResult failed(int code, String message) { return failed(ResultCode.FAILED); } /** * 参数验证失败返回结果 */ public static CommonResult validateFailed() { return failed(ResultCode.VALIDATE_FAILED); } /** * 参数验证失败返回结果 * @param message 提示信息 */ public static CommonResult validateFailed(String message) { return new CommonResult (ResultCode.VALIDATE_FAILED.getState(), message, null); } /** * 未登录返回结果 */ public static CommonResult unauthorized(T data) { return new CommonResult (ResultCode.UNAUTHORIZED.getState(), ResultCode.UNAUTHORIZED.getMessage(), data); } /** * 未授权返回结果 */ public static CommonResult forbidden(T data) { return new CommonResult (ResultCode.FORBIDDEN.getState(), ResultCode.FORBIDDEN.getMessage(), data); } public long getState() { return state; } public void setState(long state) { this.state = state; } public String getStateInfo() { return stateInfo; } public void setStateInfo(String stateInfo) { this.stateInfo = stateInfo; } public T getData() { return data; } public void setData(T data) { this.data = data; } }
9. 异常类
全局异常拦截类
@Slf4j @ControllerAdvice @ResponseBody public class GlobalExceptionHander { @ExceptionHandler(value = Exception.class) public CommonResult handlerException(Exception e){ if (e instanceof DataAddException){ log.error("【全局异常拦截】DataAddException: 请求方法 {}, 请求路径 {}",((DataAddException)e).getCode(),((DataAddException)e).getMessage()); return CommonResult.failed(ResultCode.DATA_ADD_ERROR); }else if (e instanceof DataMatchException){ log.error("【全局异常拦截】DataMatchException: 请求方法 {}, 请求路径 {}",((DataMatchException)e).getCode(),((DataMatchException)e).getMessage()); return CommonResult.failed(ResultCode.USERNAME_OR_PASSWORD_ERROR); } else { log.error("服务器内部出错{}",e); return CommonResult.failed(ResultCode.FAILED); } } }
自定义数据添加异常类
public class DataAddException extends RuntimeException { private String code; private String message; public DataAddException(String code, String message) { this.code = code; this.message = message; } public String getCode() { return code; } public void setCode(String code) { this.code = code; } @Override public String getMessage() { return message; } public void setMessage(String message) { this.message = message; } }
自定义数据匹配异常类
public class DataMatchException extends RuntimeException { private String code; private String message; public DataMatchException(String code, String message) { this.code = code; this.message = message; } public String getCode() { return code; } public void setCode(String code) { this.code = code; } @Override public String getMessage() { return message; } public void setMessage(String message) { this.message = message; } }
以上是实现该功能的所有类,当然进行密码加密处理的类只涉及service层以及启动类,其他类为基本类,如果你只想了解怎么进行加密处理存入数据库以及怎么登陆就看看service层就行。
总结
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