使用java搜索包含了指定关键字的新浪微博

package test;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URI;
import org.apache.http.HttpEntity;
import org.apache.http.HttpHost;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.conn.params.ConnRoutePNames;
import org.apache.http.impl.client.DefaultHttpClient;
public class keyword{
  public static void main(String[] args) {
    HttpClient httpclient = new DefaultHttpClient();   
    HttpGet get = new HttpGet();
    URI url;
    try 
    {
      String request = "https://c.api.weibo.com/2/search/statuses/limited.json?access_token=2.006hTzpD_md4REd50c3deafatha7ND&q=sap";
      url = new URI(request);
      get.setURI(url);
      HttpHost proxy = new HttpHost("proxy.wdf.sap.corp", 8080);
      httpclient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY, proxy);
      HttpResponse response = httpclient.execute(get);
      HttpEntity entity = response.getEntity();     
      if (entity == null)
      {
        System.out.println("response is null!");
        return;
      }     
      InputStream instreams = entity.getContent();     
      String str = convertStreamToString(instreams);      
      System.out.println(str);   
    } 
    catch (Exception e) 
    {
      e.printStackTrace();
    }
  }
  public static String convertStreamToString(InputStream is) 
  {       
    BufferedReader reader = new BufferedReader(new InputStreamReader(is));       
    StringBuilder sb = new StringBuilder();       
    String line = null;       
    try {       
      while ((line = reader.readLine()) != null) {   
        sb.append(line + "\n");       
        }       
    } catch (IOException e) {       
      e.printStackTrace();       
    } finally {       
      try {       
        is.close();       
      } catch (IOException e) {       
        e.printStackTrace();       
      }       
    }       
    return sb.toString();       
  }   
}