java 简单的HttpClient工具类，解决返回中文有部分乱码的情况

import java.io.IOException;
import java.io.InputStream;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;

public class HttpClientUtil {
	public static String sendGet(String url,String data) throws ClientProtocolException, IOException
	{
		// 创建HttpClient实例   
	    HttpClient httpclient = new DefaultHttpClient();
	    // 创建Get方法实例   
        HttpGet httpgets = new HttpGet(url+data);  
        HttpResponse response = httpclient.execute(httpgets);  
        HttpEntity entity = response.getEntity();  
        if (entity != null) {  
            InputStream instreams = entity.getContent();  
            String str = convertStreamToString(instreams);
            httpgets.abort();  
            return str;
        }
        return null;
	}
	
	public static String convertStreamToString(InputStream is) {    
        StringBuilder sb1 = new StringBuilder();    
        byte[] bytes = new byte[4096];  
        int size = 0;  
        
        try {    
        	while ((size = is.read(bytes)) > 0) {  
                String str = new String(bytes, 0, size, "UTF-8");  
                sb1.append(str);  
            }  
        } catch (IOException e) {    
            e.printStackTrace();    
        } finally {    
            try {    
                is.close();    
            } catch (IOException e) {    
               e.printStackTrace();    
            }    
        }    
        return sb1.toString();    
    }
}

是完整代码。