请求网络get

package com.baidu.net;

import java.io.IOException;

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;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.apache.http.util.EntityUtils;

public class Network {

public static String getjson(String URL) {
        String ss = "";
        HttpParams params = new BasicHttpParams();
        HttpConnectionParams.setSoTimeout(params, 5000);
        HttpConnectionParams.setConnectionTimeout(params, 5000);
        HttpGet get = new HttpGet(URL);
        HttpClient client = new DefaultHttpClient(params);
        try {
            HttpResponse res = client.execute(get);
            if (res.getStatusLine().getStatusCode() == 200) {

HttpEntity entity = res.getEntity();
                ss = EntityUtils.toString(entity, "utf-8");
            }
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

return ss;
    }
}