Java JBoss7:与ReastEasy和与自定义HttpRequestInterceptor的httpclient的加载程序约束冲突

我正在JBoss-7.1.1-Final的名为@ViewScopedBean的

@中使用RestEasy客户端框架，通过自定义
HttpRequestInterceptor
从REST服务检索数据：

RegisterBuiltin.register(ResteasyProviderFactory.getInstance());

DefaultHttpClient httpClient = new DefaultHttpClient();
httpClient.addRequestInterceptor(new PreemptiveAuthInterceptor("test","test"), 0);

ClientExecutor clientExecutor = new ApacheHttpClient4Executor(httpClient); //<---

//The error occurs above, the code below is only for completeness
MyRest rest = ProxyFactory.create(MyRest.class,
                                    "http://localhost:8080/rest",clientExecutor);

public class PreemptiveAuthInterceptor implements HttpRequestInterceptor
{
  private String username;
  private String password;

  public PreemptiveAuthInterceptor(String username, String password)
  {
    this.username=username;
    this.password=password;
  }

  @Override
  public void process(org.apache.http.HttpRequest request, HttpContext context) throws HttpException, IOException
  {
    AuthState authState = (AuthState) context.getAttribute(ClientContext.TARGET_AUTH_STATE);

    authState.setAuthScope(org.apache.http.auth.AuthScope.ANY);
    authState.setCredentials(new UsernamePasswordCredentials(username,password));
    authState.setAuthScheme(new BasicScheme());

  }
}

看起来很简单（尽管我对resteasy的打包很好奇），我添加了
org.apache.httpcomponents:httpclient
，编译范围为：


不，我得到了以下例外：

java.lang.NoClassDefFoundError: org/apache/http/HttpRequestInterceptor

java.lang.LinkageError: loader constraint violation: when resolving method   
  "org.jboss.resteasy.client.core.executors.ApacheHttpClient4Executor.<init>    
  (Lorg/apache/http/client/HttpClient;)V"
  the class loader (instance of org/jboss/modules/ModuleClassLoader)
      of the current class, my/TestBean, and
  the class loader (instance of org/jboss/modules/ModuleClassLoader)
      for resolved class, 
  org/jboss/resteasy/client/core/executors/ApacheHttpClient4Executor,
  have different Class objects for the type org/apache/http/client/HttpClient
  used in the signature my.TestBean.init(TestBean.java:65)

为了避免在JBoss上部署应用程序时出现链接错误，请在JBoss安装的modules文件夹中配置module
org.apache.httpcomponents
，但避免在应用程序中包含来自httpcomponents的JAR：

将所需的来自HttpComponents的JAR放在
modules/org/apache/HttpComponents/main
中
在此目录中的
module.xml
中列出这些JAR
将
依赖项：org.apache.httpcomponents
添加到组件的
MANIFEST.MF
请注意，步骤1和2中提到的模块已经存在。但是，您可能希望包括其他jar（例如
httpclient-cache-x.y.z.jar
）或不同版本

当然，在开发环境中解析类是另一回事。
在类似的情况下，我也遇到了同样的问题。所需的HttpComponents模块已经在我的JBoss（AS 7.1.1）模块目录中。因此，我所要做的就是添加一个清单条目，如Eustachius所述，在Maven中，您可以这样做：

<build>
    <plugins>
        <plugin>
            <artifactId>maven-jar-plugin</artifactId>
            <configuration>
                <archive>
                    <manifestEntries>
                        <Dependencies>org.apache.httpcomponents</Dependencies>
                    </manifestEntries>
                </archive>
            </configuration>
        </plugin>
    </plugins>
</build>


maven jar插件
org.apache.httpcomponents

maven war插件的配置相同。
如果在Arquillian测试中需要模块

使用以下内容在src/test/resources中创建arquillian-manifest.mf：

Manifest-Version: 1.0
Dependencies: org.jboss.resteasy.resteasy-jaxrs,org.apache.httpcomponents

然后，在进行包覆面处理时：

WebArchive war = ShrinkWrap.create...
    .addAsManifestResource("arquillian-manifest.mf", "MANIFEST.MF")

但是将依赖项org.apache.httpcomponents添加到组件的MANIFEST.MF中

引起异常-
原因：java.lang.IllegalStateException:JBAS014744:未找到org.apache.httpcomponents:main的META-INF/services/org.jboss.as.controller.Extension
在org.jboss.as.controller.parsing.ExtensionXml.loadModule（ExtensionXml.java:191）[jboss-as-controller-7.2.0.Final-redhat-8.jar:7.2.0.Final-redhat-8]
这已经是一个bug了一段时间：