如何为基本身份验证配置 HttpClient？答案

【问题标题】：How can a HttpClient be configured for basic - authentification?如何为基本身份验证配置 HttpClient？
【发布时间】：2011-05-10 20:19:30
【问题描述】：

我找到了这个序列来设置基本身份验证here：

HttpClient client = new HttpClient();

client.getState().setCredentials(
   new AuthScope("www.domain.com", 443, "realm"),
   new UsernamePasswordCredentials("username", "password") );

如何通过使用 spring 配置来实现？背后的原因是，我需要为 spring-integration HttpOutboundGateway 启用身份验证。我在这个主题上找到的唯一一条信息是this

问题是：怎么做spring-configuration？
其次，如何将 HttpClient 注入到 spring-integration 中？

【问题讨论】：

HttpClient 3？为什么不升级到 HttpClient 4？
我决定使用 spring-integration 1.0.3，因为 2.x 还没有发布。

标签： java spring spring-integration

【解决方案1】：

嗯，可能是这样的：（注意，没有经过任何测试 - 这只是一系列随机想法:)）

<bean id="httpOutbound" class="org.springframework.integration.http.HttpOutboundEndpoint" >
    <property name="requestExecutor" ref="executor" />
</bean>

<bean id="executor" class="org.springframework.integration.http.CommonsHttpRequestExecutor">
    <property name="httpClient">
        <bean factory-bean="clientFactory" factory-method="getHttpClient">
    </property>
</bean>

<bean id="clientFactory" class="bla.bla.bla.HttpClientFactoryBean">
    <constructor-arg ref="httpClient" />
    <constructor-arg ref="credentials" />
</bean>

<bean id="httpClient" class="org.apache.commons.httpclient.HttpClient">
    <constructor-arg ref="httpClientParams" />
</bean>

<bean id="httpClientParams" class="org.apache.commons.httpclient.params.HttpClientParams">
    <property name="authenticationPreemptive" value="true" />
    <property name="connectionManagerClass" value="org.apache.commons.httpclient.MultiThreadedHttpConnectionManager" />
</bean>

<bean id="credentials" class="org.apache.commons.httpclient.UsernamePasswordCredentials">
    <constructor-arg value="user" />
    <constructor-arg value="password" />
</bean>


public class HttpClientFactoryBean{
    private HttpClient httpClient;
    public HttpClientFactoryBean(HttpClient httpClient, Credentials credentials){
        this.httpClient = httpClient;
        httpClient.getState().setCredentials(AuthScope.ANY, credentials);
    }

    public HttpClient getHttpClient(){
        return httpClient;
    }
}

【讨论】：

【解决方案2】：

创建一个您自己的 FactoryBean 类，该类返回您喜欢的配置的 HttpClient 实例。

【讨论】：