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();
}
}