使用Apache HttpClient进行抢占式基本身份验证4是否有一种更简单的方法来设置http客户端以进行抢先式基本身份验证,而不是此处描述的内容?在以前的版本(3.x)中,它曾经是一个简单的方法调用(例如httpClient.getParams().setAuthenticationPreemptive(true))。我想避免的主要是将BasicHttpContext添加到我执行的每个方法。
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FFIVE
TA贡献1797条经验 获得超6个赞
如果没有每次传递上下文都很难做到这一点,但你可以通过使用请求拦截器来做到这一点。这是我们使用的一些代码(从他们的JIRA,iirc中找到):
// Pre-emptive authentication to speed things upBasicHttpContext localContext = new BasicHttpContext();BasicScheme basicAuth = new BasicScheme();localContext.setAttribute("preemptive-auth", basicAuth);httpClient.addRequestInterceptor(new PreemptiveAuthInterceptor(), 0);(...)static class PreemptiveAuthInterceptor implements HttpRequestInterceptor { public void process(final HttpRequest request, final HttpContext context) throws HttpException, IOException { AuthState authState = (AuthState) context.getAttribute(ClientContext.TARGET_AUTH_STATE); // If no auth scheme avaialble yet, try to initialize it // preemptively if (authState.getAuthScheme() == null) { AuthScheme authScheme = (AuthScheme) context.getAttribute("preemptive-auth"); CredentialsProvider credsProvider = (CredentialsProvider) context.getAttribute(ClientContext.CREDS_PROVIDER); HttpHost targetHost = (HttpHost) context.getAttribute(ExecutionContext.HTTP_TARGET_HOST); if (authScheme != null) { Credentials creds = credsProvider.getCredentials(new AuthScope(targetHost.getHostName(), targetHost.getPort())); if (creds == null) { throw new HttpException("No credentials for preemptive authentication"); } authState.setAuthScheme(authScheme); authState.setCredentials(creds); } } }}
胡说叔叔
TA贡献1804条经验 获得超8个赞
如果您希望强制HttpClient 4通过单个请求进行身份验证,则以下内容将起作用:
String username = ...String password = ...UsernamePasswordCredentials creds = new UsernamePasswordCredentials(username, password);HttpRequest request = ...request.addHeader(new BasicScheme().authenticate(creds, request));
眼眸繁星
TA贡献1873条经验 获得超9个赞
这与Mat的Mannion相同,但您不必将localContext放到每个请求中。它更简单,但它为所有请求添加了身份验证。如果您无法控制单个请求,则非常有用,就像我在使用内部使用HttpClient的Apache Solr时一样。
import org.apache.http.HttpException;import org.apache.http.HttpHost;import org.apache.http.HttpRequest;import org.apache.http.HttpRequestInterceptor;import org.apache.http.auth.AuthScope;import org.apache.http.auth.AuthState;import org.apache.http.auth.Credentials;import org.apache.http.client.CredentialsProvider;import org.apache.http.client.protocol.ClientContext;import org.apache.http.impl.auth.BasicScheme;import org.apache.http.protocol.ExecutionContext;import org.apache.http.protocol.HttpContext;httpClient.addRequestInterceptor(new PreemptiveAuthInterceptor(), 0);(...)static class PreemptiveAuthInterceptor implements HttpRequestInterceptor { public void process(final HttpRequest request, final HttpContext context) throws HttpException, IOException { AuthState authState = (AuthState) context.getAttribute(ClientContext.TARGET_AUTH_STATE); // If no auth scheme available yet, try to initialize it // preemptively if (authState.getAuthScheme() == null) { CredentialsProvider credsProvider = (CredentialsProvider) context.getAttribute(ClientContext.CREDS_PROVIDER); HttpHost targetHost = (HttpHost) context.getAttribute(ExecutionContext.HTTP_TARGET_HOST); Credentials creds = credsProvider.getCredentials(new AuthScope(targetHost.getHostName(), targetHost.getPort())); if (creds == null) { throw new HttpException("No credentials for preemptive authentication"); } authState.setAuthScheme(new BasicScheme()); authState.setCredentials(creds); } }}
当然,您必须设置凭证提供程序:
httpClient.getCredentialsProvider().setCredentials( new AuthScope(url.getHost(), url.getPort()), new UsernamePasswordCredentials(username, password))
将AuthScope
不能包含的境界,因为它是事先不知道。
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