读流testDemo

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.ProtocolException;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import java.util.Map;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.protocol.HTTP;
import org.apache.http.util.EntityUtils;
/**
	 * @author xuza
	 * @param params 参数
	 * @param url 字符串
	 * @return
	 */
	public static String sendChar(String params,String url){
		String sTotalString = "";   
        try {
			URL newUrl = null;  
			HttpURLConnection httpConn = null;  
			OutputStream output = null;  
			OutputStreamWriter outr = null;  
			newUrl = new URL(url);  
			httpConn = (HttpURLConnection) newUrl.openConnection();  
			HttpURLConnection.setFollowRedirects(true);  
			httpConn.setDoOutput(true);  
			httpConn.setRequestMethod("POST");  
			httpConn.setRequestProperty("Content-Type", "text/xml");  
			httpConn.connect();  
			output = httpConn.getOutputStream();  
			outr = new OutputStreamWriter(output);  
			// 写入请求参数  
			outr.write(params.toString().toCharArray(), 0, params .toString().length());  
			outr.flush();  
			outr.close();  
//        System.out.println("send ok");  
			int code = httpConn.getResponseCode();  
//        System.out.println("code " + code);  
//        System.out.println(httpConn.getResponseMessage());  
			//读取响应内容  
			String sCurrentLine = "";   
			if (code == 200)  
			{  
			    java.io.InputStream is = httpConn.getInputStream();  
			    BufferedReader reader = new BufferedReader(  
			            new InputStreamReader(is));  
			    while ((sCurrentLine = reader.readLine()) != null)  
			        if (sCurrentLine.length() > 0)  
			            sTotalString = sTotalString + sCurrentLine.trim();  
			} else  
			{  
			    sTotalString = "远程服务器连接失败,错误代码:" + code;  
			}  
			System.out.println("response:" + sTotalString);
		} catch (MalformedURLException e) {
			e.printStackTrace();
		} catch (ProtocolException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}  
        return sTotalString;
	}