vue项目接口域名动态的获取方法
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2023-05-16
springboot全局异常处理详解
一、单个controller范围的异常处理
package com.xxx.secondboot.web;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import com.xxx.secondboot.excBQbZPIuByeption.MyExceptionResponse;
import io.swagger.annotations.Api;
@Api("测试controllerAdvice和全局异常处理")
@RestController
@RequestMapping("/advice1")
public class AdviceController {
@RequestMapping(value = "/test1", method = RequestMethod.GET)
public String test1() {
throw new RuntimeException("advice1 - exception1");
}
@RequestMapping(value = "/test2", method = RequestMethod.GET)
public String test2() {
throw new RuntimeException("advice1 - exception2");
}
@ExceptionHandler(RuntimeException.class)
public MyExceptionReshttp://ponse exceptionHandler() {
MyExceptionResponse resp = new MyExceptionResponse();
resp.setCode(300);
resp.setMsg("exception-Handler");
return resp;
}
}
说明:
在controller中加入被@ExceptionHandler修饰的类即可(在该注解中指定该方法需要处理的那些异常类)
该异常处理方法只在当前的controller中起作用
二、全部controller范围内起作用的异常处理(全局异常处理)
1、全局异常处理类
package com.xxx.secondboot.web;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;
import com.xxx.secondboot.exception.MyExceptionResponse;
import com.xxx.secondboot.exception.MyRuntimeException;
//@ControllerAdvice(annotations=RestController.class)
//@ControllerAdvice(basePackages={"com.xxx","com.ooo"})
@ControllerAdvice
public class GlobalExceptionHandler {
@ExceptionHandler(RuntimeException.class)
// @ExceptionHandler(value={RuntimeException.class,MyRuntimeException.class})
// @ExceptionHandler//处理所有异常
@ResponseBody //在返回自定义相应类的情况下必须有,这是@ControllerAdvice注解的规定
public MyExceptionResponse exceptionHandler(RuntimeException e, HttpServletResponse response) {
MyExceptionResponse resp = new MyExceptionResponse();
resp.setCode(300);
resp.setMsg("exception-Handler");
// response.setStatus(600);
return resp;
}
}
说明:
@ControllerAdvice是controller的一个辅助类,最常用的就是作为全局异常处理的切面类
@ControllerAdvice可以指定扫描范围
@ControllerAdvice约定了几种可行的返回值,如果是直接返回model类的话,需要使用@ResponseBody进行json转换
返回String,表示跳到某个view
返回modelAndView
返回model + @ResponseBody
2、controller
package com.xxx.secondboot.web;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import io.swagger.annotations.Api;
@Api("测试controllerAdvice和全局异常处理")
@RestController
@RequestMapping("/advice1")
public class AdviceController {
@RequestMapping(value = "/test1", method = RequestMethod.GET)
public Shttp://tring test1() {
throw new RuntimeException("advice1 - exception1");
}
@RequestMapping(value = "/test2", method = RequestMethod.GET)
public String test2() {
throw new RuntimeException("advice1 - exception2");
}
// @ExceptionHandler(RuntimeException.class)
// public MyExceptionResponse exceptionHandler() {
// MyExceptionResponse resp = new MyExceptionResponse();
// resp.setCode(300);
// resp.setMsg("exception-Handler");
// return resp;
// }
}
注意:
同一个异常被局部范围异常处理器和全局范围异常处理器同时覆盖,会选择小范围的局部范围处理器
同一个异常被小范围的异常类和大范围的异常处理器同时覆盖,会选择小范围的异常处理器
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