Question

有人可以指向权威的示例，演示如何使用Proxy进行身份验证。

我的搜索显示不一定使用ver的各种示例。 4.3.6因而混淆。

我遇到了以下两种方法。我不想为每个请求设置代理和凭据，因此想知道这里的最佳做法是什么？此外，我必须确保这适用于Basic，Digest和NTLM方案。

方法1：

// Create client and set credential provider
CloseableHttpClient httpclient = HttpClients.custom()
            .setDefaultCredentialsProvider(credsProvider).build();
// Every request is set the with proxy settings
RequestConfig config = RequestConfig.custom()
            .setProxy(proxy)
            .build();
HttpGet httpget = new HttpGet("/");
httpget.setConfig(config);

方法2：

HttpHost proxyHost = new HttpHost(proxyServer, proxyPort);
DefaultProxyRoutePlanner routePlanner = new DefaultProxyRoutePlanner(proxyHost);

HttpClientBuilder clientBuilder = HttpClients.custom()
            .setConnectionManager(connectionManager);
clientBuilder.setRoutePlanner(routePlanner);

client = clientBuilder.build();

// Where and how to set credentials as best practice ?

我肯定会对这一点感到懊悔，但到目前为止，我已经想了太多，因此请求一些帮助。感谢，

Answer 1

Ok这是我最终做的并解决了用例。

// Method that returns HTTP Client that can be re-used for various GET/POST/... calls
static CloseableHttpClient makeHttpClient(...) throws IOException {

    PoolingHttpClientConnectionManager connectionManager = new PoolingHttpClientConnectionManager();
    // Default MAX connections per route
    connectionManager.setDefaultMaxPerRoute(...);
    // MAX total connections
    connectionManager.setMaxTotal(...);

    HttpClientBuilder clientBuilder = HttpClients.custom()
            .setConnectionManager(connectionManager);
    // Set proxy if needed
    HttpHost proxyHost = new HttpHost(theProxyServer, port);
   DefaultProxyRoutePlanner routePlanner = new  DefaultProxyRoutePlanner(proxyHost);
   clientBuilder.setRoutePlanner(routePlanner);

   // Select and configure the properties you are interested in
   RequestConfig config = RequestConfig.custom()
                    .setProxy(proxyHost)
                    .setRedirectsEnabled(true)
                    .setMaxRedirects(5)
                    .setConnectTimeout(100 * 1000)
                    .setConnectionRequestTimeout(300 * 1000)
                    .setSocketTimeout(300 * 1000)
                    .build();

   // set proxy authentication as needed
   CredentialsProvider credentialProvider = new BasicCredentialsProvider();
   // set NTLM/basic/digest credentials
   credentialProvider.setCredentials(...)
   ....

   clientBuilder.setDefaultCredentialsProvider(credentialProvider);
   clientBuilder.setDefaultRequestConfig(config);

   // Now build and return the client
   return clientBuilder.build();
}

现在在其他地方使用此客户端来执行HTTP操作。

// get HTTP client
makeHttpClient(...)
// get payload 
HttpPost postMethod = new HttpPost(url);
postMethod.setHeader(CONTENT_TYPE, CONTENT_TYPE_JSON);
postMethod.setEntity(payload);

try {
        response = client.execute(postMethod);
        ...
} catch(...) { ... }

这有助于创建具有所有所需特征的HTTP客户端，这些特性可以重复用于不同位置的各种HTTP操作。

使用apache http client 4.3.6的经过身份验证的代理

1 个答案: