检索添加了用户输入

Question

一个网站，我读了检索Java中的网页，它是快速的使用方法：

URL url = new URL("http://example.com"); 
HttpURLConnection connection = (HttpURLConnection)url.openConnection(); 
connection.setRequestMethod("GET"); 
connection.connect(); 

InputStream stream = connection.getInputStream(); 
// read the contents using an InputStreamReader 

但我怎么添加用户到URL给一个变量？例如：

用户输入x 加载页面http://example.com/x.php

我是新来的Java，所以任何帮助，将不胜感激。

Answer 1

URL url = new URL("http://example.com"); 
HttpURLConnection connection = (HttpURLConnection)url.openConnection(); 
URL urlWithInput = new URL("http://example.com" + input); 
connection.setRequestMethod("GET"); 
connection.connect();  
InputStream stream = connection.getInputStream();  

或者

String url = "http://example.com" + "/" + input 
HttpURLConnection connection = (HttpURLConnection)url.openConnection(); 
URL urlWithInput = new URL(url); 
connection.setRequestMethod("GET"); 
connection.connect();  
InputStream stream = connection.getInputStream();  

Answer 2

您可以使用字符串连接这样的：

final String url = "http://example.com" + "/" + userInput 

然后你就可以实例化URL与字符串。