文件下载工具类 传入url

记录文件工具类 根据get 请求方式下载文件

public class FileDownload {
 
 /**
  * 文件下载
  * @param url 链接地址
  * @param path 要保存的路径及文件名
  * @return
  */
 public static boolean download(String url,String path){
   
   boolean flag = false;
   
   CloseableHttpClient httpclient = HttpClients.createDefault();
   RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(2000)
       .setConnectTimeout(2000).build();

   HttpGet get = new HttpGet(url);
   get.setConfig(requestConfig);
   
   BufferedInputStream in = null;
   BufferedOutputStream out = null;
   try{
     for(int i=0;i<3;i++){
       CloseableHttpResponse result = httpclient.execute(get);
       System.out.println(result.getStatusLine());
       if(result.getStatusLine().getStatusCode() == 200){
         in = new BufferedInputStream(result.getEntity().getContent());
         File file = new File(path);
         out = new BufferedOutputStream(new FileOutputStream(file));
         byte[] buffer = new byte[1024];
         int len = -1;
         while((len = in.read(buffer,0,1024)) > -1){
           out.write(buffer,0,len);
         }
         flag = true;
         break;
       }else if(result.getStatusLine().getStatusCode() == 500){
         continue ;
       }
     }
     
   }catch(Exception e){
     e.printStackTrace();
     flag = false;
   }finally{
     get.releaseConnection();
     try{
       if(in != null){
         in.close();
       }
       if(out != null){
         out.close();
       }
     }catch(Exception e){
       e.printStackTrace();
       flag = false;
     }
   }
   return flag;
 }

 private static Log log = LogFactory.getLog(FileDownload.class);
}