问使用HttpComponentsMessageSender进行基本身份验证的WebServiceTemplate

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package com.company.service.a.ws.test.config;

import java.io.IOException;

import org.apache.http.HttpException;
import org.apache.http.HttpRequest;
import org.apache.http.HttpRequestInterceptor;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.client.HttpClient;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.protocol.HTTP;
import org.apache.http.protocol.HttpContext;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.DependsOn;
import org.springframework.context.annotation.PropertySource;
import org.springframework.context.support.PropertySourcesPlaceholderConfigurer;
import org.springframework.oxm.jaxb.Jaxb2Marshaller;
import org.springframework.ws.client.core.WebServiceTemplate;
import org.springframework.ws.soap.saaj.SaajSoapMessageFactory;
import org.springframework.ws.transport.http.HttpComponentsMessageSender;

@PropertySource("classpath:/${environment}-use-case-data.properties")
@ComponentScan(basePackages = "com.company.service.a.ws.test")
@Configuration
public class TestConfig {

    @Value("${ws.url}")
    private String wsUrl;

    @Value("${ws.username}")
    private String username;

    @Value("${ws.password}")
    private String password;

    private static final Logger logger = LogManager.getLogger();

    @Bean
    public SaajSoapMessageFactory messageFactory() {
        return new SaajSoapMessageFactory();
    }

    @Bean
    public Jaxb2Marshaller marshaller() {
        Jaxb2Marshaller marshaller = new Jaxb2Marshaller();
        marshaller.setContextPath("com.company.service.a.ws.model.data");
        return marshaller;
    }

    @Bean RequestConfig requestConfig() {

        RequestConfig requestConfig = RequestConfig.custom()
                .setAuthenticationEnabled(true)
                .build();
        return requestConfig;
    }

    @Bean
    @DependsOn( value = "propertyConfigurer" )
    public UsernamePasswordCredentials credentials() {

        logger.debug("creating credentials for username: {} passowrd={}", 
                username, password);

        UsernamePasswordCredentials credentials = new UsernamePasswordCredentials(
                username, password);

        return credentials;
    }

    @Bean 
    public CredentialsProvider credentialsProvider() {
        CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
        credentialsProvider.setCredentials(AuthScope.ANY, credentials());
        return credentialsProvider;
    }

    private static class ContentLengthHeaderRemover implements HttpRequestInterceptor{

        @Override
        public void process(HttpRequest request, HttpContext context) 
                throws HttpException, IOException {

            // fighting org.apache.http.protocol.RequestContent's 
            // ProtocolException("Content-Length header already present");
            request.removeHeaders(HTTP.CONTENT_LEN);
        }
    }

    @Bean
    public HttpComponentsMessageSender messageSender() {

        RequestConfig requestConfig = RequestConfig.custom()
                .setAuthenticationEnabled(true)
                .build();

        HttpClientBuilder httpClientBuilder = HttpClients.custom();

        HttpClient httpClient = httpClientBuilder
                .addInterceptorFirst(new ContentLengthHeaderRemover())
                .setDefaultRequestConfig(requestConfig)
                .setDefaultCredentialsProvider(credentialsProvider())               
                .build();

        HttpComponentsMessageSender messageSender = new HttpComponentsMessageSender(httpClient);
        return messageSender;
    }

    @Bean( name = "propertyConfigurer" )
    public static PropertySourcesPlaceholderConfigurer propertyConfigurer() {
        PropertySourcesPlaceholderConfigurer configurer = 
                new PropertySourcesPlaceholderConfigurer();

        return configurer;
    }

    @Bean
    public WebServiceTemplate webServiceTemplate() {

        logger.debug("creating webServiceTemplate to url: {}", wsUrl);

        WebServiceTemplate webServiceTemplate = new WebServiceTemplate(messageFactory());
        webServiceTemplate.setDefaultUri(wsUrl);
        webServiceTemplate.setMarshaller(marshaller());
        webServiceTemplate.setUnmarshaller(marshaller());
        webServiceTemplate.setMessageSender(messageSender());
        return webServiceTemplate;
    }

}