http connection

最新推荐文章于 2025-02-27 14:03:03 发布

shine4j

最新推荐文章于 2025-02-27 14:03:03 发布

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分类专栏： java

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本文介绍了一种使用Servlet处理HTTP GET请求，并从服务器获取配置信息的方法，包括URL构造、HTTP连接建立、输入流读取及错误处理。

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package com.ad.web.servlet.conf.rmapi;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.servlet.http.HttpServletRequest;

import org.apache.log4j.Logger;

import cn.richinfo.cmail.common.config.PropertiesUtil;

import com.ad.web.common.CommonConst;

public class GetConfrmi
{

   private static final Logger log = Logger.getLogger(GetConfrmi.class);

   public static String doCommand(String sid,String rmkey,String from,HttpServletRequest request)
   {
       String config="";
       String requestUrl =PropertiesUtil.getProperty(CommonConst.CONF_SVRSERVER)+ "?sid=" + sid+"&from="+from;
       Pattern p = Pattern.compile("\\s*|\t|\r|\n");
       Matcher m = p.matcher(requestUrl);
       requestUrl = m.replaceAll("");
       try {
           URL url = new URL(requestUrl);
           HttpURLConnection httpconn = (HttpURLConnection) url.openConnection();
           httpconn.setConnectTimeout(6000);
           httpconn.setReadTimeout(6000);
           httpconn.setDoInput(true);
           httpconn.setDoOutput(true);
           httpconn.setRequestMethod("GET");
           httpconn.setRequestProperty("Accept", "text/plain, */*");
           httpconn.setRequestProperty("Content-Type", "text/html; charset=UTF-8");
           String cookies = request.getHeader("Cookie");
           httpconn.setRequestProperty("Cookie", cookies);

           InputStream inPs = httpconn.getInputStream();
           BufferedReader rd = new BufferedReader(new InputStreamReader(inPs,"UTF-8"));
           String tempLine = rd.readLine();
           StringBuffer tempStr = new StringBuffer();
           while (tempLine != null) {
               tempStr.append(tempLine);
               tempLine = rd.readLine();
           }
           config = tempStr.toString();
           //log.info("sid="+sid+" |result=0k | config="+config);
           return config;
       } catch (IOException e) {
           log.error("sid="+sid + "| reqUrl="+requestUrl+" |result=failure | json="+config,e);
           return config;
       }

   }


}