spring boot 学习--03---web控制层全局异常处理

全局Controller异常

package com.springboot.study.exception.handler;

import java.io.IOException;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;

/**
* ControllerAdvice  控制层的切面
* @author like
*
*/
@ControllerAdvice
public class GlobalDefaultExceptionHandler {

@ExceptionHandler(value = Exception.class)
public void defaultErrorHandler(HttpServletRequest req, HttpServletResponse response ,Exception e)  {
e.printStackTrace();
response.setCharacterEncoding("UTF-8");
try {
response.getWriter().write(e.toString());
} catch (IOException e1) {
e1.printStackTrace();
}
}

}

2. 新增异常方法

package com.springboot.study.controller;

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

import com.springboot.study.bean.Demo;

/**
* Demo 控制类
* @author like
*
*/
@RestController
@RequestMapping("/demo")
public class DemoController {

@RequestMapping("/getDemo")
public Demo getDemo(){
Demo demo = new Demo();
demo.setId(1);
demo.setDemo("demo");
demo.setName("testDemo");
return demo;
}

@RequestMapping("/zero")
public int zeroException(){
return 100/0;
}

}

3. 测试