利用HttpClient 4.1 下载文件

package com.ultra.control.main;

import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import org.apache.http.HttpResponse;
import org.apache.http.StatusLine;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.client.HttpClients;
public class HttpUtil {
 public static void main(String[] args) throws Exception {
 
  String url = "http://10.0.64.222/product/2015/201507/20150707/RDCP/medium/SEVP_AOC_RDCP_SLDAS_EBREF_ACHN_L88_PI_20150707090000001.GIF";
  CloseableHttpClient httpClient = HttpClients.createDefault();
  HttpGet httpGet = new HttpGet(url);
  HttpResponse httpResponse = httpClient.execute(httpGet);
  StatusLine statusLine = httpResponse.getStatusLine();
  if (statusLine.getStatusCode() == 200) {
   File xml = new File("d:/sitemap/SEVP_AOC_RDCP_SLDAS_EBREF_ACHN_L88_PI_20150706090000001.GIF");
   FileOutputStream outputStream = new FileOutputStream(xml);
   
   InputStream inputStream = httpResponse.getEntity().getContent();
   
   byte buff[] = new byte[1024];
   int counts = 0;
   while ((counts = inputStream.read(buff)) != -1) {
    System.out.println(".......");
    outputStream.write(buff, 0, counts);
    
   }
   outputStream.flush();
   outputStream.close();
  }
  httpClient.close();
  System.out.println("success!");
 }
}