package com.fgkj.Filters;

import java.io.IOException;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Arrays;
import java.util.Date;
import java.util.HashSet;
import java.util.Set;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.omg.CORBA.Request;

import com.fgkj.actions.ActionUtil;

public class CrossDomainLimitFilter implements Filter{
	public static final int max_connect_count = 10;
	
	public final static String CROSS_DOMAIN_KEY	= "44c4a294cb66d13727c14b065dbe8548";		//跨域请求 key
		
	public void doFilter(ServletRequest req, ServletResponse resp,
			FilterChain chain) throws IOException, ServletException {
		HttpServletRequest request=(HttpServletRequest)req;
		HttpServletResponse response =(HttpServletResponse)resp;
		String URL=request.getRequestURI();
		request.setCharacterEncoding("UTF-8");
		response.setCharacterEncoding("UTF-8");
		response.setContentType("text/html;charset=utf-8");
		
		//非跨域请求
		isAlowCrossDomain(response,request);
		chain.doFilter(request, response);
		
	}

	public void init(FilterConfig arg0) throws ServletException {
		
	}

	public void destroy() {
		
	}
	
	/**
	 * 允许跨域访问
	 * @param response
	 */
	public void isAlowCrossDomain(HttpServletResponse response,HttpServletRequest request){
		 // 设置允许多个域名请求
        String[] allowDomains = {"http://localhost:8919","http://localhost:8080"};
        Set allowOrigins = new HashSet(Arrays.asList(allowDomains));
       // if (Arrays.asList(Constants.ALLOW_DOMAIN).contains(originHeader)) {
        String originHeads = request.getHeader("Origin");
        if(allowOrigins.contains(originHeads)){
            //设置允许跨域的配置
            // 这里填写你允许进行跨域的主机ip（正式上线时可以动态配置具体允许的域名和IP）
        	response.setHeader("Access-Control-Allow-Origin", originHeads);
        }
		 /*String ip=request.getRemoteAddr();
		 //String originHeads = request.getHeader("Host"); 
		 String originHeads =ip+":8080";
		 System.out.println(originHeads);*/
		 response.setHeader("Access-Control-Allow-Origin", originHeads);
		//response.setHeader("Access-Control-Allow-Origin", "*");				//允许跨域访问
		response.setHeader("Access-Control-Allow-Headers", "X-Requested-With,content-type,token");
		response.setHeader("Access-Control-Allow-Methods", "GET, HEAD, POST, PUT, DELETE, TRACE, OPTIONS, PATCH");
		response.setHeader("Access-Control-Allow-Credentials", "true");
	}
	
	public static void main(String[] args) {
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		System.out.println(sdf.format(new Date()));
	}
}