如何使用Apache的httpclient

Question

我一直在尝试使用Apaches HttpComponent的httpclient从配置的属性配置代理身份验证的用户和密码，但没有成功。我找到的所有示例都引用了不再可用的方法和类，例如HttpState和setProxyCredentials。

那么，有人能举例说明如何配置代理凭证吗？

Answer 1

对于那些寻找4.3的答案的人来说...它相当新，他们的例子没有使用新的HttpClientBuilder ......所以我在这个版本中实现了这个：

NTCredentials ntCreds = new NTCredentials(ntUsername, ntPassword,localMachineName, domainName );

CredentialsProvider credsProvider = new BasicCredentialsProvider();
credsProvider.setCredentials( new AuthScope(proxyHost,proxyPort), ntCreds );
HttpClientBuilder clientBuilder = HttpClientBuilder.create();

clientBuilder.useSystemProperties();
clientBuilder.setProxy(new HttpHost(pxInfo.getProxyURL(), pxInfo.getProxyPort()));
clientBuilder.setDefaultCredentialsProvider(credsProvider);
clientBuilder.setProxyAuthenticationStrategy(new ProxyAuthenticationStrategy());

CloseableHttpClient client = clientBuilder.build();

Answer 2

对于Basic-Auth，它看起来像这样：

DefaultHttpClient httpclient = new DefaultHttpClient();
httpclient.getCredentialsProvider().setCredentials(
    new AuthScope("PROXY HOST", 8080),
    new UsernamePasswordCredentials("username", "password"));

HttpHost targetHost = new HttpHost("TARGET HOST", 443, "https");
HttpHost proxy = new HttpHost("PROXY HOST", 8080);

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

开箱即用不支持AFAIK NTLM。但是您可以使用NTCredentials来管理它，并可能会重载DefaultProxyAuthenticationHandler。

Answer 3

而不是NTLM，可以在4.3+ httpClient上使用普通的旧用户名和密码，如下所示：

HttpHost proxy = new HttpHost("x.x.com",8080);
Credentials credentials = new UsernamePasswordCredentials("username","password");
AuthScope authScope = new AuthScope("x.x.com", 8080);
CredentialsProvider credsProvider = new BasicCredentialsProvider();
credsProvider.setCredentials(authScope, credentials);
HttpClient client = HttpClientBuilder.create().setProxy(proxy).setDefaultCredentialsProvider(credsProvider).build();
HttpResponse response=client.execute(new HttpGet("http://stackoverflow.com/questions/6962047/apache-httpclient-4-1-proxy-authentication"));

Answer 4

如何使用Apache的httpclient

设置代理身份验证

（代理网络上的预授权）

这个答案使用了Apache的HttpClient v4.1及更高版本。

接受的答案对我不起作用，但我找到了其他的东西！

以下是来自apache的一些经过测试验证的代码，演示了如何通过代理对HTTP请求进行身份验证。

完整文档位于此处：https://hc.apache.org/httpcomponents-client-ga/tutorial/html/authentication.html。

Apache也有一个很好的例子：https://hc.apache.org/httpcomponents-client-ga/httpclient/examples/org/apache/http/examples/client/ClientProxyAuthentication.java

将my_username替换为您的代理用户名
将my_password替换为您的代理密码
将proxy.mycompany.com替换为您的代理主机
将8080替换为您的代理端口
将google.com替换为您要将HTTP请求发送到的网站的主机。
将/some-path替换为您要向其发送HTTP请求的路径。这使用您之前指定的主机站点（google.com）。

以下示例将对username:password@proxy.mycompany.com:8080进行身份验证并向GET发送http://www.google.com/some-path请求，并打印响应HTTP代码。

    CredentialsProvider credsProvider = new BasicCredentialsProvider();
    credsProvider.setCredentials(
            new AuthScope("proxy.mycompany", 8080),
            new UsernamePasswordCredentials("my_username", "my_password"));
    CloseableHttpClient httpclient = HttpClients.custom()
            .setDefaultCredentialsProvider(credsProvider).build();
    try {
        //Replace "google.com" with the target host you want to send the request to
        HttpHost target = new HttpHost("google.com", 80, "http");
        HttpHost proxy = new HttpHost("proxy.mycompany", 8080);

        RequestConfig config = RequestConfig.custom()
            .setProxy(proxy)
            .build();
        CloseableHttpResponse response = null;

        //Replace "/some-path" with the path you want to send a get request to.
        HttpPost httppost = new HttpPost("/some-path");
        httppost.setConfig(config);
        response = httpclient.execute(target, httppost);

        try {
            System.out.println("Return status code is "+response.getStatusLine().getStatusCode());          
        } finally {
            response.close();
        }
    } finally {
        httpclient.close();
    }

Answer 5

对于NTLM来说，一件简单的事情对我有用：

httpclient.getCredentialsProvider().setCredentials(
                    new AuthScope(proxy_host, proxy_port), 
                    new NTCredentials(this.proxy_user, this.proxy_pass, this.proxy_host, this.proxy_domain));
HttpHost proxy = new HttpHost(this.proxy_host, this.proxy_port, "http");
httpclient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY, proxy);

Answer 6

对于HttpClient 4.5和每个请求的身份验证：

HttpContext httpContext = new BasicHttpContext();
AuthState authState = new AuthState();

authState.update(new BasicScheme(), new UsernamePasswordCredentials("userName", "password"));
httpContext.setAttribute(HttpClientContext.PROXY_AUTH_STATE, authState);
CloseableHttpResponse httpResponse = httpClient.execute(httpRequest, httpContext);

Answer 7

如果您必须保持代码与4.1一起使用或要使用以下代码段，那么一定要知道httpclient 4.1不会将身份验证发送给代理，这一点很重要。您可能会得到407“需要代理身份验证”状态码。我升级到4.3.3 ，尽管在此版本中不推荐使用DefaultHttpClient和ConnRoutePNames，但它们都运行良好。希望这会有所帮助！

DefaultHttpClient httpclient = new DefaultHttpClient();
httpclient.getCredentialsProvider().setCredentials(
    new AuthScope("PROXY HOST", 8080),
    new UsernamePasswordCredentials("username", "password"));

HttpHost proxy = new HttpHost("PROXY HOST", 8080);

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

Apache HttpClient 4.1 - 代理验证

7 个答案:

如何使用Apache的httpclient

（代理网络上的预授权）