SpringBoot笔记（七）全局异常

全局异常一般有很多种方式，比如自定义，继承之类的，一般来说，主要还是用2个注解

• @ControllerAdvice
• @ExceptionHandler

抛出异常

package com.jiataoyuan.demo.springboot.controller;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.concurrent.TimeoutException;

/**
 * @author TaoYuan
 * @version V1.0.0
 * @date 2018/4/16 0016
 * @description description
 */
@RestController
@RequestMapping("/exception")
public class ExceptionsController {

    @GetMapping()
    public String Main(){
        return "
Exceptions!
";
    }

    // 抛出异常
    @GetMapping("/timeout")
    public String throwTimeOutException() throws TimeoutException {
        throw new TimeoutException();
    }

    @GetMapping("/runtime")
    public String throwRuntimeException(){
        throw new RuntimeException();
    }

    @GetMapping("/common")
    public String throwException() throws Exception {
        throw new Exception();
    }


}

处理异常

package com.jiataoyuan.demo.springboot.controller;

import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import org.springframework.web.context.request.WebRequest;

import java.util.concurrent.TimeoutException;

/**
 * @author TaoYuan
 * @version V1.0.0
 * @date 2018/4/16 0016
 * @description description
 */
@RestControllerAdvice
public class DefaultExceptionAdvice {
    //处理异常
//    @ExceptionHandler(RuntimeException.class)
//    public String RuntimeException(Exception e, WebRequest webRequest){
//        return "
ExceptionType:" + e + "
"
//                + "
WebRequest:" + webRequest + "
";
//    }
//
//    @ExceptionHandler(TimeoutException.class)
//    public String TimeOutException(Exception e, WebRequest webRequest){
//        return "
ExceptionType:" + e + "
"
//                + "
WebRequest:" + webRequest + "
";
//    }

    @ExceptionHandler(Exception.class)
    public String Exception(Exception e, WebRequest webRequest){
        return "
ExceptionType:" + e + "
"
                + "
WebRequest:" + webRequest + "
";
    }
}

基本就是这样了，实际开发过程中，肯定不会这么随意，一般都会继承RuntimeException然后进行细分。