Question

我正在尝试在运行时使用代理创建URL连接。我的代码如下：

Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress("192.0.2.100", 80));
HttpURLConnection connection =
    (HttpURLConnection)new URL("http://abc.example.com").openConnection(proxy);

但这不起作用。有谁知道为什么？

Answer 1

为未来访问者的帮助添加答案

Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress("192.0.2.100", 80));
HttpURLConnection connection =(HttpURLConnection)new URL("http://abc.example.com").openConnection(proxy);
connection.setDoOutput(true);
connection.setDoInput(true);
connection.setRequestProperty("Content-type", "text/xml");
connection.setRequestProperty("Accept", "text/xml, application/xml");
connection.setRequestMethod("POST");

Answer 2

dku.rajkumar 的方式对我无效。

我试试这个并且它有效。但这需要两倍的时间。

Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress("192.0.2.100", 80));

    HttpURLConnection connection =
        (HttpURLConnection)new URL("http://abc.example.com").openConnection(proxy);
    ((HttpURLConnection)new URL("http://abc.example.com").openConnection(proxy)).getInputStream();

System.out.println(connection.usingProxy());

结果是真的

无 ((HttpURLConnection)new URL("http://abc.example.com").openConnection(proxy)).getInputStream();

结果为假

如何在java中使用代理获取URL连接？

2 个答案: