ErrorController.java

package org.taobao88.taobao.controllers;

import java.io.IOException;
import java.text.MessageFormat;

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

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.taobao88.taobao.enterprise.service.TopMenuService;

@Controller
@RequestMapping("/error")
public class ErrorController {

	@Autowired private TopMenuService topMenuService;
	
	@RequestMapping(method = RequestMethod.GET)
	public String error(HttpServletRequest request, HttpServletResponse response, Model model) {
		
		Integer statusCode = (Integer) request.getAttribute("javax.servlet.error.status_code");
		Throwable throwable = (Throwable) request.getAttribute("javax.servlet.error.exception");
		
		String exceptionMessage = getExceptionMessage(throwable, statusCode);
			 
		String requestUri = (String) request.getAttribute("javax.servlet.error.request_uri");
		if (requestUri == null) {
			requestUri = "Unknown";
		}
			 
		String message = MessageFormat.format("{0} returned for {1} with message {2}", statusCode, requestUri, exceptionMessage);
			 
		model.addAttribute("errorMessage", message);  
		model.addAttribute("topMenuList", topMenuService.getFullTopMenu());
		return "error";
	}
	
	private String getExceptionMessage(Throwable throwable, Integer statusCode) {
		if (throwable != null) {
			return throwable.getMessage();
		}
		HttpStatus httpStatus = HttpStatus.valueOf(statusCode);
		return httpStatus.getReasonPhrase();
	}
}