import java.io.IOException;import java.util.ArrayList;import java.util.HashMap;import org.apache.http.Header;import org.apache.http.HttpResponse;import org.apache.http.HttpStatus;import org.apache.http.NameValuePair;import org.apache.http.ProtocolVersion;import org.apache.http.client.ClientProtocolException;import org.apache.http.client.HttpClient;import org.apache.http.client.entity.UrlEncodedFormEntity;import org.apache.http.client.methods.HttpGet;import org.apache.http.client.methods.HttpPost;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.message.BasicNameValuePair;import org.apache.http.params.BasicHttpParams;import org.apache.http.params.HttpConnectionParams;import org.apache.http.params.HttpParams;import org.apache.http.params.HttpProtocolParams;import org.apache.http.util.EntityUtils;public class HttpClientBrowser {		private static final ProtocolVersion PROTOCOL_VERSION = new ProtocolVersion("HTTP", 1, 1);		public static int timeout=15000;		private HashMap
    
      COOKIE = new HashMap
     
      ();		public void getcookie(HttpResponse conn) {		String cookieVal = null;		for(Header bfh:conn.getAllHeaders()){			if (bfh.getName().equalsIgnoreCase("set-cookie")) {				cookieVal=bfh.getValue();				String[] keys = cookieVal.split(";");				for (int k = 0; k < keys.length; k++) {					String[] vls = keys[k].split("=");					if (",Path,Max-Age,Domain,Comment,".indexOf(vls[0])==-1&&vls.length>1) {						COOKIE.put(vls[0], vls[1]);					}				}			}		}	}		public String cookie2String() {		String retn = "";		for (String key : COOKIE.keySet()) {			retn += key + "=" + COOKIE.get(key) + ";";		}		return retn;	}		public String getHttpSessionId() {		return COOKIE.get("JSESSIONID");	}		private HttpResponse post(String url,ArrayList
      
        list) throws ClientProtocolException, IOException,Exception{		HttpPost httpPost = new HttpPost(url);		String cookie = cookie2String();		if (cookie.length() > 0)	httpPost.setHeader("Cookie", cookie);		HttpParams params = new BasicHttpParams();		HttpConnectionParams.setConnectionTimeout(params,timeout);		HttpConnectionParams.setSoTimeout(params,timeout);		if(list!=null){			httpPost.setEntity(new UrlEncodedFormEntity(list,"UTF-8"));		}		HttpProtocolParams.setVersion(params, PROTOCOL_VERSION);		httpPost.setParams(params);		HttpClient httpClient = new DefaultHttpClient();		HttpResponse response =httpClient.execute(httpPost);		int code = response.getStatusLine().getStatusCode();				if(code!=HttpStatus.SC_OK){			System.out.println("HTTP状态返回码:"+code);			System.out.println("HTTP返回内容:"+EntityUtils.toString(response.getEntity(), "gb2312"));			throw new Exception("HTTP访问出错！");					}		getcookie(response);		return response;	}		public HttpResponse post(String url,String[][] params) throws ClientProtocolException, IOException,Exception{		ArrayList
       
         list = new ArrayList
        
         ();			for(int i=0;i
         
          =2){ list.add(new BasicNameValuePair(params[i][0],params[i][1])); } } return post(url,list); } public HttpResponse get(String url) throws ClientProtocolException, IOException,Exception{ HttpGet httpGet = new HttpGet(url); String cookie = cookie2String(); if (cookie.length() > 0) httpGet.setHeader("Cookie", cookie); HttpParams params = new BasicHttpParams(); HttpConnectionParams.setConnectionTimeout(params,timeout); HttpConnectionParams.setSoTimeout(params,timeout); HttpProtocolParams.setVersion(params, PROTOCOL_VERSION); httpGet.setParams(params); HttpClient httpClient = new DefaultHttpClient(); HttpResponse response =httpClient.execute(httpGet); int code = response.getStatusLine().getStatusCode(); if(code!=HttpStatus.SC_OK){ System.out.println("HTTP状态返回码:"+code); System.out.println("HTTP返回内容:"+EntityUtils.toString(response.getEntity(), "gb2312")); throw new Exception("HTTP访问出错！"); } getcookie(response); return response; } public String html(String url) throws ClientProtocolException, IOException,Exception{ HttpResponse res = get(url); return EntityUtils.toString(res.getEntity()); } public String html(String url,String encode) throws ClientProtocolException, IOException,Exception{ HttpResponse res = get(url); return EntityUtils.toString(res.getEntity(),encode); } public String html(String url,String[][] params) throws ClientProtocolException, IOException,Exception{ HttpResponse res = post(url,params); return EntityUtils.toString(res.getEntity()); } public String html(String url,String[][] params,String encode) throws ClientProtocolException, IOException,Exception{ HttpResponse res = post(url,params); return EntityUtils.toString(res.getEntity(),encode); } }//同一个HttpClientBrowser对象对于url的多次访问，保持同一个session访问。