springboot自定义异常处理

在实际业务中，springboot的异常处理可能无法满足我们的业务需求，那么就需要我们自定义异常来处理

• 自定义异常

• package com.zhk.demo.exception;
  
  public class OrderNotExistException extends RuntimeException{
      private String ordreid;
  
      public OrderNotExistException(String ordreid){
          super("订单不存在");
          this.ordreid = ordreid;
      }
  
  
      public String getOrdreid() {
          return ordreid;
      }
  }
  

  　　

• 自定义异常处理类

• package com.zhk.demo.exceptionhander;
  
  import com.zhk.demo.exception.OrderNotExistException;
  import org.springframework.web.bind.annotation.ControllerAdvice;
  import org.springframework.web.bind.annotation.ExceptionHandler;
  import org.springframework.web.bind.annotation.ResponseBody;
  
  import java.util.HashMap;
  import java.util.Map;
  
  /*
  ControllerAdvice  说明是异常处理器  ResponseBody 返回json    ExceptionHandler指定要处理什么异常
   */
  @ControllerAdvice
  @ResponseBody
  public class MyExceptionHandler {
      @ExceptionHandler(OrderNotExistException.class)
      public Map<String,String> handlerOrderException(OrderNotExistException e){
         Map<String,String> map = new HashMap<>();
         map.put("orderid",e.getOrdreid());
         map.put("message", e.getMessage());
         return map;
      }
  }

• 编写测试类

• package com.zhk.demo.controller;
  
  import com.zhk.demo.exception.OrderNotExistException;
  import org.springframework.http.HttpStatus;
  import org.springframework.stereotype.Controller;
  import org.springframework.web.bind.annotation.*;
  
  @Controller
  @ResponseBody
  @RequestMapping("/order")
  public class OrderController {
      @GetMapping("/{orderid}")
      @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
      public void getOrder(@PathVariable(name = "orderid") String orderid) throws RuntimeException{
          if("1".equals(orderid)){
              throw  new OrderNotExistException(orderid);
          }else{
              throw  new RuntimeException("这是系统异常");
          }
      }
  }
  

  　　

• 测试接口

   

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