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我需要通过代理身份验证从 API 服务器获取 API 响应内容到我的本地服务器。API 请求将如下所示：

http://api.example.com/nav_page/head?locale=in&pointer=old&cont=/resque/&scope=old&release=new




import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.HttpHost;
import org.apache.http.HttpResponse;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.conn.params.ConnRoutePNames;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;


public class ClientProxyAuthentication {

    public static void main(String[] args) throws Exception {

        DefaultHttpClient httpclient = new DefaultHttpClient();
        try {
            httpclient.getCredentialsProvider().setCredentials(
                    new AuthScope("proxy.example.com", 8080),
                    new UsernamePasswordCredentials("Domain\user", "pass"));

            HttpHost targetHost = new HttpHost("api.example.com", 80, "http");
            HttpHost proxy = new HttpHost("proxy.example.com", 8080);

            httpclient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY, proxy);

            HttpGet httpget = new HttpGet("/");

            System.out.println("executing request: " + httpget.getRequestLine());
            System.out.println("via proxy: " + proxy);
            System.out.println("to target: " + targetHost);

            HttpResponse response = httpclient.execute(targetHost, httpget);
            HttpEntity entity = response.getEntity();

            System.out.println("----------------------------------------");
            System.out.println(response.getStatusLine());
            if (entity != null) {
                System.out.println("Response content length: " + entity.getContentLength());
                System.out.println(EntityUtils.toString(entity));
            }
            Header[] headers = response.getAllHeaders();
            for (int i = 0; i<headers.length; i++) {
                System.out.println(headers[i]);
            }
            EntityUtils.consume(entity);

        } finally {
            // When HttpClient instance is no longer needed,
            // shut down the connection manager to ensure
            // immediate deallocation of all system resources
            httpclient.getConnectionManager().shutdown();
        }
    }
}

在此代码中，如果目标 URL 指定为 api.example.com，则身份验证成功并获取资源（但基本目录中没有资源，因此没有收到任何有用的信息）。但要获得正确的响应，我需要提供该主机内的导航路径。

因此，如果我像这样附加路径

HttpHost targetHost = new HttpHost("api.example.com/nav_page/head?locale=in&pointer=old&cont=/resque/&scope=old&release=new", 80, "http");

我收到一些错误响应，但不正确。

HTTP/1.1 503 Service Unavailable
Response content length: 442
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>503 Service Temporarily Unavailable</title>
</head><body>
<h1>Service Temporarily Unavailable</h1>
<p>The server is temporarily unable to service your
request due to maintenance downtime or capacity
problems. Please try again later.</p>
<p>Additionally, a 404 Not Found
error was encountered while trying to use an ErrorDocument to handle the request.</p>
</body></html>

如果我直接在浏览器中点击 URL，我能够得到响应。

我可以知道如何发送导航路径请求吗？

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0 回答 0