java - HTTP 错误 407 需要代理身份验证

Question

我正在尝试使用此代码访问该网址

System.setProperty("http.proxyHost", "111.88.15.108");
    System.setProperty("http.proxyPort", "8002");
    System.setProperty("http.proxyUser", "user");
    System.setProperty("http.proxyPassword", "password");
    URL oracle = new URL("http://www.google.com/");
    URLConnection yc = oracle.openConnection();
    BufferedReader in = new BufferedReader(new InputStreamReader(
            yc.getInputStream()));
    String inputLine;
    while ((inputLine = in.readLine()) != null)

        System.out.println(inputLine);
    in.close();

这在我的 Windows 机器上工作正常，但在 Linux 机器上不起作用。我遇到这样的错误

Exception in thread "main" java.io.IOException: Server returned HTTP response code: 407 for URL: http://www.google.com/ at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source) at com.yahoo.Connection.main(Connection.java:31)

即使代理设置也是正确的，我也尝试过这样

java -Dhttp.proxyHost="111.88.15.108" -Dhttp.proxyPort="8002" -Dhttp.proxyUser="user" -Dhttp.proxyPassword="password"  -jar yahoo_test3.jar

但是同样的错误，我尝试在/etc/profile 中设置 export http_proxy= 但没有用

知道哪里出了问题。

Answer 1

我也遇到了同样的问题。以下内容对我有用。

Authenticator.setDefault(new Authenticator() 
{
    protected PasswordAuthentication getPasswordAuthentication() 
    {
    return new PasswordAuthentication("username","password".toCharArray());
    }
});