java - 尝试用 Java 发送请求时出现错误 407

Question

我有以下代码:

public class SendRequest {

public static void main(String[] args) throws ClientProtocolException, IOException {

    String url = "http://backoffice.xyz";

    HttpHost proxy = new HttpHost("proxy.proxy", 8080, "http");
    HttpClient client = HttpClientBuilder.create().setProxy(proxy).build();
    HttpGet request = new HttpGet(url);

    //request.addHeader("User-Agent", "USER-AGENT");
    HttpResponse response = client.execute(request);

    System.out.println("Response Code: " + response.getStatusLine().getStatusCode());

    BufferedReader rd = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));

    StringBuffer result = new StringBuffer();
    String line = "";
    while((line = rd.readLine()) != null){
        result.append(line);
    }
        System.out.println(result.toString());

}

}

这将返回 407 未经授权的访问/缓存访问被拒绝错误。我需要包含什么代码才能通过代理进行身份验证？

Answer 1

您的代理是否需要基于用户名/密码的身份验证？如果是这样，请尝试实现 java.net.Authenticator。我想你需要设置 useSystemProperties

Authenticator.setDefault(new Authenticator(){
密码验证 getPasswordAuthentication(){
返回新的PasswordAuthentication(用户名，密码)；
}
});

您可能需要将 setDefaultCredentialsProvider(CredentialsProvidercredentialsProvider) 添加到 HTTPClientBuilder 并使用 SystemDefaultCredentialsProvider 实例。