Java关闭TCP / IP连接

Question

I need a java program to download a series of file from a web server and I need to be able to close and then reopen the tcp/ip connection between each file download.

Not sure how to do this.

Answer 1

Here is a low-level way of retrieving any information from not only socket 80 (http) but generically to retrieve mail, do a 'telnet' etc:

socket = new Socket();
socket.connect(new InetSocketAddress(host, port));
reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
writer = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));

now to do a call to retrieve a page, send the get command, set the content-type, and send two '\\n'.

There is a higher-level solution: Send HTTP GET request with header

Answer 2

您可以为要发送给它的IP和端口创建一个Socket ，然后使用FileInputStream将文件读入字节数组，并通过DataOutPutStream发送该字节数组，然后完成后，只需刷新dataOutPutStream并关闭Socket并调用该功能再次发送下一个文件。

Answer 3

use the logic: Please post something that you have tried.

 do{
      connection.open;
      while(!eof){
      fetchfiles();
      }
     connection.close;
     }while(no of files yet to download);