远程访问(post 传参数) 以及IOUtils复制文件

package com.action;

import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;

import org.apache.commons.io.IOUtils;
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.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;

public class IOUtilTest {

    public static void main(String[] args) throws Exception{
        HttpClient client = new DefaultHttpClient();
        String URL = "http://www.ola.com.cn/img/icn_joke.png";
        //    String URL = "http://www.baidu.com/";
        //    HttpGet get = new HttpGet(URL);
        HttpPost post = new HttpPost(URL);
        NameValuePair p = new BasicNameValuePair("v", "123");
        List<NameValuePair> list = new ArrayList<NameValuePair>();
        list.add(new BasicNameValuePair("v", "140532246669"));
        StringEntity entity = new UrlEncodedFormEntity(list);
        post.setEntity(entity);
        HttpResponse res = client.execute(post);
        //if(res.getStatusLine().getStatusCode()==200){
        //         String result = EntityUtils.toString(res.getEntity());
        //         System.out.println(result+"
");
        //}
        HttpEntity e = res.getEntity();
        InputStream is = null;
        is = e.getContent();
        File file = new File("D:\2.png");
        FileOutputStream fos = new FileOutputStream(file);
        IOUtils.copy(is, fos);
        IOUtils.closeQuietly(is);
        fos.close();
    }
}