spring boot ---web应用开发-错误处理

一．错误的处理

方法一：Spring Boot 将所有的错误默认映射到/error，实现ErrorController

@Controller
@RequestMapping(value = "error")
public class BaseErrorController implements ErrorController {
private static final Logger logger = LoggerFactory.getLogger(BaseErrorController.class);

	@Override
	public String getErrorPath() {
		logger.info("出错啦！进入自定义错误控制器");
		return "error/error";
	}

	@RequestMapping
	public String error() {
		return getErrorPath();
	}

}

方法二：添加自定义的错误页面

2.1 html静态页面：在resources/public/error/ 下定义

如添加404页面： resources/public/error/404.html页面，中文注意页面编码

2.2 模板引擎页面：在templates/error/下定义

如添加5xx页面： templates/error/5xx.ftl

注：templates/error/ 这个的优先级比较高 resources/public/error/

方法三：使用注解@ControllerAdvice

package com.demo.example.handler;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpStatus;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.servlet.ModelAndView;


@ControllerAdvice
public class ErrorExceptionHandler{
	private static final Logger logger = LoggerFactory.getLogger(ErrorExceptionHandler.class);
	
	@ExceptionHandler({RuntimeException.class})
	@ResponseStatus(HttpStatus.OK)
	public ModelAndView processException(RuntimeException exception) {
		logger.info("自定义异常-RuntimeException");
		ModelAndView modelAndView = new ModelAndView();
		modelAndView.addObject("roncooException", exception.getMessage());
		modelAndView.setViewName("error/500");
		return modelAndView;
	}
	
	@ExceptionHandler({Exception.class})
	@ResponseStatus(HttpStatus.OK)
	public ModelAndView processException(Exception exception) {
		ModelAndView modelAndView = new ModelAndView();
		logger.info("自定义异常-Exception");
		modelAndView.addObject("roncooException", exception.getMessage());
		modelAndView.setViewName("error/500");
		return modelAndView;
	}
	
	
}

一．错误的处理

方法一：Spring Boot 将所有的错误默认映射到/error，实现ErrorController

@Controller

@RequestMapping(value = "error")

public class BaseErrorController implements ErrorController {

private static final Logger logger = LoggerFactory.getLogger(BaseErrorController.class);

@Override

public String getErrorPath() {

logger.info("出错啦！进入自定义错误控制器");

return "error/error";

}

@RequestMapping

public String error() {

return getErrorPath();

}

方法二：添加自定义的错误页面

2.1 html静态页面：在resources/public/error/ 下定义

如添加404页面： resources/public/error/404.html页面，中文注意页面编码

2.2 模板引擎页面：在templates/error/下定义

如添加5xx页面： templates/error/5xx.ftl

注：templates/error/ 这个的优先级比较 resources/public/error/高

方法三：使用注解@ControllerAdvice

/**

package com.demo.example.handler;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.springframework.http.HttpStatus;

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

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

import org.springframework.web.bind.annotation.ResponseStatus;

import org.springframework.web.servlet.ModelAndView;

/**

* 异常处理类

* @author hugovon

* @version 1.0

@ControllerAdvice

publicclass ErrorExceptionHandler{

privatestaticfinal Logger logger = LoggerFactory.getLogger(ErrorExceptionHandler.class);

@ExceptionHandler({RuntimeException.class})

@ResponseStatus(HttpStatus.OK)

public ModelAndView processException(RuntimeException exception) {

logger.info("自定义异常-RuntimeException");

ModelAndView modelAndView = new ModelAndView();

modelAndView.addObject("roncooException", exception.getMessage());

modelAndView.setViewName("error/500");

returnmodelAndView;

}

@ExceptionHandler({Exception.class})

@ResponseStatus(HttpStatus.OK)

public ModelAndView processException(Exception exception) {

ModelAndView modelAndView = new ModelAndView();

logger.info("自定义异常-Exception");

modelAndView.addObject("roncooException", exception.getMessage());

modelAndView.setViewName("error/500");

returnmodelAndView;

}