package com.fgkj.Filters;
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import java.io.IOException;
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import java.io.PrintWriter;
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import java.text.SimpleDateFormat;
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import java.util.Arrays;
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import java.util.Date;
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import java.util.HashSet;
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import java.util.Set;
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import javax.servlet.Filter;
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import javax.servlet.FilterChain;
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import javax.servlet.FilterConfig;
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import javax.servlet.ServletException;
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import javax.servlet.ServletRequest;
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import javax.servlet.ServletResponse;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import org.omg.CORBA.Request;
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import com.fgkj.actions.ActionUtil;
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public class CrossDomainLimitFilter implements Filter{
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public static final int max_connect_count = 10;
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public final static String CROSS_DOMAIN_KEY = "44c4a294cb66d13727c14b065dbe8548"; //跨域请求 key
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public void doFilter(ServletRequest req, ServletResponse resp,
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FilterChain chain) throws IOException, ServletException {
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HttpServletRequest request=(HttpServletRequest)req;
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HttpServletResponse response =(HttpServletResponse)resp;
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String URL=request.getRequestURI();
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request.setCharacterEncoding("UTF-8");
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response.setCharacterEncoding("UTF-8");
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response.setContentType("text/html;charset=utf-8");
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//非跨域请求
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isAlowCrossDomain(response,request);
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chain.doFilter(request, response);
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}
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public void init(FilterConfig arg0) throws ServletException {
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}
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public void destroy() {
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}
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/**
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* 允许跨域访问
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* @param response
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*/
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public void isAlowCrossDomain(HttpServletResponse response,HttpServletRequest request){
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// 设置允许多个域名请求
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String[] allowDomains = {"http://localhost:8919","http://localhost:8080"};
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Set allowOrigins = new HashSet(Arrays.asList(allowDomains));
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// if (Arrays.asList(Constants.ALLOW_DOMAIN).contains(originHeader)) {
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String originHeads = request.getHeader("Origin");
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if(allowOrigins.contains(originHeads)){
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//设置允许跨域的配置
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// 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）
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response.setHeader("Access-Control-Allow-Origin", originHeads);
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}
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/*String ip=request.getRemoteAddr();
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//String originHeads = request.getHeader("Host");
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String originHeads =ip+":8080";
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System.out.println(originHeads);*/
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response.setHeader("Access-Control-Allow-Origin", originHeads);
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//response.setHeader("Access-Control-Allow-Origin", "*"); //允许跨域访问
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response.setHeader("Access-Control-Allow-Headers", "X-Requested-With,content-type,token");
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response.setHeader("Access-Control-Allow-Methods", "GET, HEAD, POST, PUT, DELETE, TRACE, OPTIONS, PATCH");
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response.setHeader("Access-Control-Allow-Credentials", "true");
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}
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public static void main(String[] args) {
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SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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System.out.println(sdf.format(new Date()));
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}
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}
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