Apache HttpComponents HttpClient 5.0 - Kerberos SPNEGO 客户端
创始人
2024-09-04 05:01:08
0

要使用Apache HttpComponents HttpClient 5.0进行Kerberos SPNEGO认证,你需要执行以下步骤:

  1. 添加Maven依赖项:

    
        org.apache.httpcomponents
        httpclient
        5.0
    
    
        org.apache.httpcomponents
        httpclient-win
        5.0
    
    
  2. 创建一个Kerberos SPNEGO认证的HttpClient实例:

    import org.apache.hc.client5.http.HttpClient;
    import org.apache.hc.client5.http.auth.AuthScope;
    import org.apache.hc.client5.http.auth.AuthState;
    import org.apache.hc.client5.http.auth.AuthStrategy;
    import org.apache.hc.client5.http.auth.Credentials;
    import org.apache.hc.client5.http.auth.UsernamePasswordCredentials;
    import org.apache.hc.client5.http.auth.kerberos.KerberosAuthSchemeFactory;
    import org.apache.hc.client5.http.auth.kerberos.KerberosCredentials;
    import org.apache.hc.client5.http.auth.kerberos.KerberosScheme;
    import org.apache.hc.client5.http.auth.kerberos.KerberosSchemeFactory;
    import org.apache.hc.client5.http.auth.kerberos.KerberosSchemeProvider;
    import org.apache.hc.client5.http.auth.kerberos.KerberosSchemeProviderFactory;
    import org.apache.hc.client5.http.classic.methods.HttpGet;
    import org.apache.hc.client5.http.impl.auth.AuthenticatorSupport;
    import org.apache.hc.client5.http.impl.auth.BasicCredentialsProvider;
    import org.apache.hc.client5.http.impl.auth.HttpAuthenticator;
    import org.apache.hc.client5.http.impl.auth.KerberosAsyncSchemeProvider;
    import org.apache.hc.client5.http.impl.auth.KerberosSchemeFactoryV5;
    import org.apache.hc.client5.http.impl.auth.WinHttpAsyncSchemeProvider;
    import org.apache.hc.client5.http.impl.auth.WindowsNegotiateSchemeFactory;
    import org.apache.hc.client5.http.impl.classic.CloseableHttpClient;
    import org.apache.hc.client5.http.impl.classic.CloseableHttpResponse;
    import org.apache.hc.client5.http.impl.classic.HttpClients;
    import org.apache.hc.core5.http.HttpHost;
    import org.apache.hc.core5.http.HttpStatus;
    import org.apache.hc.core5.http.io.entity.EntityUtils;
    import org.apache.hc.core5.http.protocol.HttpContext;
    
    import java.io.IOException;
    
    public class KerberosSPNEGOExample {
        public static void main(String[] args) throws IOException {
            // 创建HttpClient实例
            HttpClient httpClient = createKerberosSPNEGOHttpClient();
    
            // 创建HttpGet请求
            HttpHost target = new HttpHost("example.com");
            HttpGet httpGet = new HttpGet("/");
            httpGet.addHeader("Accept", "application/json");
    
            try (CloseableHttpClient client = (CloseableHttpClient) httpClient;
                 CloseableHttpResponse response = client.execute(target, httpGet)) {
                // 处理响应
                int statusCode = response.getCode();
                if (statusCode == HttpStatus.SC_OK) {
                    String responseBody = EntityUtils.toString(response.getEntity());
                    System.out.println(responseBody);
                } else {
                    System.out.println("请求失败,状态码:" + statusCode);
                }
            }
        }
    
        private static HttpClient createKerberosSPNEGOHttpClient() {
            // 配置Kerberos SPNEGO认证
            AuthStrategy authStrategy = new KerberosAuthStrategyFactory().create();
            Credentials credentials = new KerberosCredentials();
            AuthScope authScope = new AuthScope(AuthScope.ANY_HOST, AuthScope.ANY_PORT, AuthScope.ANY_REALM, "Negotiate");
    
            BasicCredentialsProvider credentialsProvider = new BasicCredentialsProvider();
            credentialsProvider.setCredentials(authScope, credentials);
    
            HttpAuthenticator authenticator = new HttpAuthenticator(authStrategy) {
                @Override
                protected void processAuthChallenge(HttpHost host, HttpResponse response, HttpContext context) throws HttpException, IOException {
                    super.processAuthChallenge(host, response, context);
                    AuthState authState = (AuthState) context.getAttribute(HttpClientContext.TARGET_AUTH_STATE);
                    if (authState != null && authState.getAuthScheme() instanceof KerberosScheme) {
                        KerberosScheme kerberosScheme = (KerberosScheme) authState.getAuthScheme();
                        kerberosScheme.setCredentials(credentials);
                    }
                }
            };
    
            return HttpClients.custom()
                    .setDefaultAuthSchemeRegistry(Authenticator

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