Springboot最全权限集成Redis-前后端分离-springsecurity-jwt-Token3

3.3.5:编写UserService接口实现类

@Transactional
public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements
UserService {
/**
* 根据用户名查询用户信息
*
* @param userName
* @return
*/
@Override
public User findUserByUserName(String userName) {
//创建条件构造器
QueryWrapper<User> queryWrapper = new QueryWrapper<User>();
//用户名
queryWrapper.eq("username",userName);
//返回查询记录
return baseMapper.selectOne(queryWrapper);
}
}

3.3.6 自定义UserDetailsService类

    创建CustomerUserDetailsService用户认证处理类，该类需要实 现UserDetailsService接口。

public class CustomerUserDetailsService implements UserDetailsService {
@Resource
private UserService userService;
@Override
public UserDetails loadUserByUsername(String username) throws
UsernameNotFoundException {
//调用根据用户名查询用户信息的方法
User user = userService.findUserByUserName(username);
//如果对象为空，则认证失败
if (user == null) {
throw new UsernameNotFoundException("用户名或密码错误!");
}
return user;
}
}

3.3.7:编写自定义认证成功处理器

    要实现一个接口AuthenticationSuccessHandler

* 登录认证成功处理器类
*/
@Component
public class LoginSuccessHandler implements AuthenticationSuccessHandler {
@Override
public void onAuthenticationSuccess(HttpServletRequest request,
HttpServletResponse response, Authentication authentication) throws IOException,
ServletException {
//设置客户端的响应的内容类型
response.setContentType("application/json;charset=UTF-8");
//获取当登录用户信息
User user = (User) authentication.getPrincipal();
//消除循环引用
String result = JSON.toJSONString(user,
SerializerFeature.DisableCircularReferenceDetect);
//获取输出流
ServletOutputStream outputStream = response.getOutputStream();
outputStream.write(result.getBytes(StandardCharsets.UTF_8));
outputStream.flush();
outputStream.close();
}
}

3.3.8：编写自定义认证失败处理器

    实现一个接口AuthenticationFailureHandler

* 用户认证失败处理类
*/
@Component
public class LoginFailureHandler implements AuthenticationFailureHandler {
@Override
public void onAuthenticationFailure(HttpServletRequest request,
HttpServletResponse response, AuthenticationException exception) throws
IOException, ServletException {
//设置客户端响应编码格式
response.setContentType("application/json;charset=UTF-8");
//获取输出流
ServletOutputStream outputStream = response.getOutputStream();
String message = null;//提示信息
int code = 500;//错误编码
//判断异常类型
if(exception instanceof AccountExpiredException){
message = "账户过期,登录失败！";
}else if(exception instanceof BadCredentialsException){
message = "用户名或密码错误,登录失败！";
}else if(exception instanceof CredentialsExpiredException){
message = "密码过期,登录失败！";
}else if(exception instanceof DisabledException){
message = "账户被禁用,登录失败！";
}else if(exception instanceof LockedException){
message = "账户被锁,登录失败！";
}else if(exception instanceof InternalAuthenticationServiceException){
message = "账户不存在,登录失败！";
}else{
message = "登录失败！";
}
//将错误信息转换成JSON
String result =
JSON.toJSONString(Result.error().code(code).message(message));
outputStream.write(result.getBytes(StandardCharsets.UTF_8));
outputStream.flush();
outputStream.close();
}
}