Spring boot自定义异常处理(全局异常处理)

1.编写自定义异常类

继承RuntimeException

public class LoginException extends RuntimeException{
    public LoginException(String message) {
        super(message);
    }
}

注:spring 对于 RuntimeException 异常才会进行事务回滚

2.编写全局异常处理类

@RestControllerAdvice
public class ExceptionController{
    // 当捕获的异常 是 LogicException异常的时候
    @ExceptionHandler(LoginException.class)
    public Object LxExp(Exception e, HttpServletResponse response){
        response.setContentType("application/json;charset=utf-8");
        return JsonResult.error(JsonResult.CODE_ERROR,e.getMessage(),null);
    }

    // 当捕获运行运行时异常
    @ExceptionHandler(RuntimeException.class)
    public Object runtimeExp(Exception e, HttpServletResponse response){
        response.setContentType("application/json;charset=utf-8");
        return JsonResult.error(JsonResult.CODE_ERROR,JsonResult.MSG_ERROR,null);
    }

}
  • @ExceptionHandler 配置的 value 指定需要拦截的异常类型,上面拦截了 Exception.class 这种异常

  • @RestControllerAdvice都是对Controller进行增强的,可以全局捕获spring mvc抛的异常

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