Java中的getHostAddress（）和getInetAddress（） [英] getHostAddress() and getInetAddress() in Java

问题描述

我正在创建TCP套接字应用程序。在服务器端，

I am creating TCP socket application. In server side,

ss = new ServerSocket(10000);
Socket socket = ss.accept();
String remoteIp = socket.getInetAddress().getHostAddress();
String RemotePort = ":"+socket.getLocalPort();

我对最后两行有点困惑，getInetAddress（）用于返回地址socket连接到，即是host的地址？然后我们为什么需要一个getHostAddress（）？

I am a little bit confused about the last two lines, getInetAddress() used to return the address of socket connect to, namely is the address of host? and then why we need a getHostAddress()?

推荐答案

socket.getInetAddress（）返回 InetAddress 包含远程计算机IP地址的对象。

socket.getInetAddress() returns an InetAddress object that contains the IP address of the remote machine.

InetAddress.getHostAddress（）返回 String 对象以及该地址的文字表示。

InetAddress.getHostAddress() returns a String object with the textual representation of that address.

所以，最后得到一个字符串你可以打印，这是怎么回事你做到了。

So, to end up with a String you can print, that's how you do it.

编辑：如果您不熟悉，这称为'方法链接'。这与说法相同：

In case you're not familiar, this is called 'method chaining'. It's the same thing as saying:

InetAddress addy = socket.getInetAddress();
String remoteIp = addy.getHostAddress();

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