第九篇 SpringBoot 2 x全局异常处理-优快云博客

本文详细介绍了在SpringBoot项目中自定义异常类TempException及全局异常处理器GlobalExceptionHandler的方法，通过实例演示了如何在控制器中抛出异常并由全局处理器统一处理。

关于对异常的处理也是我们在开发过程一个比较大的问题，今天我们就来看看SpringBoot中如何处理异常。

TempException.java

package com.priv.gabriel.exception;

import lombok.AllArgsConstructor;
import lombok.Data;

/**
 * Created with Intellij IDEA.
 *
 * @Author: Gabriel
 * @Date: 2018-10-23
 * @Description:
 */
@Data
@AllArgsConstructor
public class TempException extends RuntimeException {

	private String code;

	private String message;
}
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需要继承RuntimeException事物才会进行回滚

GlobalExceptionHandler.java

package com.priv.gabriel.exception.handler;

import com.priv.gabriel.exception.TempException;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;

/**
 * Created with Intellij IDEA.
 *
 * @Author: Gabriel
 * @Date: 2018-10-23
 * @Description:
 */
@ControllerAdvice
public class GlobalExceptionHandler {

	@ResponseBody
	@ExceptionHandler(value = TempException.class)
	public TempException tempErrHandler(TempException e){
		TempException exception = new TempException(e.getCode(),e.getMessage());
		return exception;
	}
}
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DemoController.java

package com.priv.gabriel.controller;

import com.priv.gabriel.exception.TempException;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * Created with Intellij IDEA.
 *
 * @Author: Gabriel
 * @Date: 2018-10-23
 * @Description:
 */
@RestController
@RequestMapping("/demo")
public class DemoController {

	@RequestMapping("/index")
	public String index(){
		throw new TempException("111","没找到对象");
	}
}
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项目下载地址