Question

我正在使用Jersey编写JAX_RS应用程序。将单个对象作为JSON返回的所有端点在Tomcat和WildFly中都能正常工作。

返回一个对象集合的一个端点在Tomcat中运行得非常好。但是，当我在WildFly 10.1.0中部署相同的服务时，它失败了。

功能如下：

@POST
@Produces({MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML})
public Response searchForActivities(ActivitySearch search) {
    System.out.println(search.getDescriptions() + ", " + search.getDurationFrom());

    List<Activity> activities = activityRepository.findByConstraints(search);

    if(activities == null || activities.size() <= 0) {
        return Response.status(Status.NOT_FOUND).build();
    }

    return Response.ok().entity(new GenericEntity<List<Activity>> (activities) {}).build();

}

堆栈跟踪如下：

javax.servlet.ServletException: org.glassfish.jersey.message.internal.MessageBodyProviderNotFoundException: MessageBodyWriter not found for media type=application/json, type=class java.util.ArrayList, genericType=class java.util.ArrayList.
org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:373)
org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:372)
org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:335)
org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:218)
io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85)
io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)
io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131)
io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)
io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)
io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)
io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60)
io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77)
io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)
io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)
io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:292)
io.undertow.servlet.handlers.ServletInitialHandler.access$100(ServletInitialHandler.java:81)
io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:138)
io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:135)
io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:48)
io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)
io.undertow.servlet.api.LegacyThreadSetupActionWrapper$1.call(LegacyThreadSetupActionWrapper.java:44)
io.undertow.servlet.api.LegacyThreadSetupActionWrapper$1.call(LegacyThreadSetupActionWrapper.java:44)
io.undertow.servlet.api.LegacyThreadSetupActionWrapper$1.call(LegacyThreadSetupActionWrapper.java:44)
io.undertow.servlet.api.LegacyThreadSetupActionWrapper$1.call(LegacyThreadSetupActionWrapper.java:44)
io.undertow.servlet.api.LegacyThreadSetupActionWrapper$1.call(LegacyThreadSetupActionWrapper.java:44)
io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:272)
io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81)
io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:104)
io.undertow.server.Connectors.executeRootHandler(Connectors.java:202)
io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:805)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
java.lang.Thread.run(Thread.java:745)

然而，简单地返回List<Activity>的函数在Tomcat和WildFly中没有任何问题。请参阅以下函数的定义：

@GET
@Produces({MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML})
public List<Activity> getAllActivities() {
    return activityRepository.findAllActivities();
}

Answer 1

这个例子似乎与泽西岛密切相关。您需要修改POM以使用WildFly BOM（org.wildfly.bom:wildfly-javaee7-with-tools:10.1.0.Final）。然后导入JAX-RS依赖项或使用Java EE 7 maven coordinates（also helpful）。

如果您想要一个适用于任何Java EE 7兼容容器的更通用的JAX-RS客户端示例，请查看WildFly JAX-RS Client quickstart。或任何Java EE Samples。

JAX_RS - MessageBodyProviderNotFoundException：找不到ArrayList的MessageBodyWriter

1 个答案: