package com.hx.util;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.http.HttpServletResponse;

import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import com.alibaba.fastjson.JSONObject;

/**
 * 
 * @author lijietian
 * 
 */
public class WebUtil {
    /**
     * 返回数据给前端的方法
     * 
     * @param msg 返回数据
     *       
     */
    public static void AJAXdata(String msg) {
    	ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
    	HttpServletResponse response = attributes.getResponse();
    	
    	response.setContentType("text/plain");// 文本
        response.setHeader("Cache-Control", "no-store");
        response.setCharacterEncoding("utf-8");
        try {
            PrintWriter pw = response.getWriter();
            pw.write(msg);
            pw.flush();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    
    /**
     * 组成统一的格式
     * 
     */
    public static String AJAXMsg(Integer status,String errorMsg,JSONObject obj) {
    	JSONObject info = new JSONObject();
    	info.put("status", status);
    	info.put("errorMsg", errorMsg);
    	info.put("datas", obj);
    	return info.toJSONString();
    }
    
}