java - 在 JAVA 中合并两个 URL

Question

我将两个 url 与以下代码合并。

String strUrl1 = "http://www.domainname.com/path1/2012/04/25/file.php";
   String arg = "?page=2";
   URL url1;
    try {
        url1 = new URL(strUrl1);
        URL reconUrl1 = new URL(url1,arg);
        System.out.println(" url : " + reconUrl1.toString());
    } catch (MalformedURLException ex) {
        ex.printStackTrace();
    }

我对结果感到惊讶:http://www.domainname.com/path1/2012/04/25/?page=2

我希望它是(浏览器做什么):http://www.domainname.com/path1/2012/04/25/file.php?page=2

关于构造函数 URL(URL 上下文，字符串规范)的 javadoc 解释它应该遵守 RFC。

我做错了什么？

谢谢

更新:

This is the only problem I encountered with the fonction.
The code already works in all others cases, like browser do
  "domain.com/folder/sub" + "/test" -> "domain.com/test"
  "domain.com/folder/sub/" + "test" -> "domain.com/folder/sub/test"
  "domain.com/folder/sub/" + "../test" -> "domain.com/folder/test"
  ...

Answer 1

您始终可以先合并字符串，然后根据合并的字符串创建 URL。

  StringBuffer buf = new StringBuffer();
  buf.append(strURL1);
  buf.append(arg);
  URL url1 = new URL(buf.toString());