我有一个Web应用程序正在部署到wildfly 8.1.0 Final . 它使用Spring，RESTEasy等 . 在代码中的一个位置，需要 ClientBuilder 来创建 javax.ws.rs.client.Client ：

public class CustomClientImpl implements CustomClient {
      // [...]
      private Client client = ClientBuilder.newClient();
      // [...]
   }

这会生成以下嵌套异常（跳过前5） . 简而言之，错误是失败的演员阵容

jar：file：/ c：/Programs/wildfly-8.1.0.Final/modules/system/layers/base/javax/ws/rs/api/main/jaxrs-api-3.0.8.Final.jar！/ javax / ws / rs / client / ClientBuilder.class到vfs：/ c：/Programs/wildfly-8.1.0.Final/bin/content/ybsearch.war/WEB-INF/lib/jaxrs-api-3.0.8 . Final.jar /使用javax / WS / RS /客户/ ClientBuilder.class

看起来它们应该是兼容的，因为它是相同jar文件中的同一个类 . [??]

Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.lilblackbook.search.api.response.ListingProcessorImpl]: Constructor threw exception; nested exception is java.lang.LinkageError: ClassCastException: attempting to cast jar:file:/c:/Programs/wildfly-8.1.0.Final/modules/system/layers/base/javax/ws/rs/api/main/jaxrs-api-3.0.8.Final.jar!/javax/ws/rs/client/ClientBuilder.class to vfs:/c:/Programs/wildfly-8.1.0.Final/bin/content/ybsearch.war/WEB-INF/lib/jaxrs-api-3.0.8.Final.jar/javax/ws/rs/client/ClientBuilder.class
        at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:163)
        at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:122)
        at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:267)
        ... 59 more
Caused by: java.lang.LinkageError: ClassCastException: attempting to cast jar:file:/c:/Programs/wildfly-8.1.0.Final/modules/system/layers/base/javax/ws/rs/api/main/jaxrs-api-3.0.8.Final.jar!/javax/ws/rs/client/ClientBuilder.class to vfs:/c:/Programs/wildfly-8.1.0.Final/bin/content/ybsearch.war/WEB-INF/lib/jaxrs-api-3.0.8.Final.jar/javax/ws/rs/client/ClientBuilder.class
        at javax.ws.rs.client.ClientBuilder.newBuilder(ClientBuilder.java:97)
        at javax.ws.rs.client.ClientBuilder.newClient(ClientBuilder.java:114)
        at com.lilblackbook.search.api.skynet.CustomClientImpl.<init>(CustomClientImpl.java:56)
        at com.lilblackbook.search.api.response.ListingProcessorImpl.<init>(ListingProcessorImpl.java:38)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) [rt.jar:1.7.0_21]
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) [rt.jar:1.7.0_21]
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) [rt.jar:1.7.0_21]
        at java.lang.reflect.Constructor.newInstance(Constructor.java:525) [rt.jar:1.7.0_21]
        at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:147)

我的pom包括依赖

<dependency>
     <groupId>org.jboss.resteasy</groupId>
     <artifactId>jaxrs-api</artifactId>
     <version>3.0.8.Final</version>
     <!--scope>provided</scope-->
  </dependency>

鉴于 jaxrs-api-3.0.8.Final.jar 由wildfly提供，我尝试 provided 作为依赖范围，但生成 ClassNotFoundException . 当我包含它时，会生成上面详述的 ClassCastException .

这是足够的信息吗？有什么想法吗？谢谢！

java spring maven war resteasy