12

我将 Google Guava 库用于java.util.List<T>Java EE 7 应用程序中的排序和过滤等任务。

下面给出了一个java.util.List<T>基于 CDI bean 中的过滤器列表过滤 a 的示例。

@Named
@ViewScoped
public class Bean extends LazyDataModel<T> implements Serializable {

    private static final long serialVersionUID = 1L;

    private final class Filtering implements Predicate<T> {

        private final Map<String, Object> filters;

        public Filtering(Map<String, Object> filters) {
            this.filters = filters;
        }

        @Override
        public boolean apply(T p) {
            if (p == null) {
                return false;
            }

            Integer id = (Integer) filters.get("id");

            if (id != null && !p.getId().equals(id)) {
                return false;
            }

            BigDecimal size = (BigDecimal) filters.get("size");

            if (size != null && ((p.getSize().compareTo(size) < 0))) {
                return false;
            }
            return true;
        }
    }
}

嵌套类可用于java.util.List<T>从 CDI bean 中过滤 a,如下所示。

List<T> list = //Initialize the list here to be filtered.

//...

list = FluentIterable.from(list).filter((new Filtering(filters))).toList();

保存过滤器列表的位置filters在哪里。java.util.Map<String, Object>


以前在带有JSF Managed Beans的 Java EE 应用程序中(在 GlassFish 4.0 上)运行良好。

我将此应用程序迁移到带有CDI 托管 Bean的 GlassFish 4.1并发生以下异常。

SEVERE:   java.lang.NoSuchMethodError: com.google.common.collect.FluentIterable.toList()Lcom/google/common/collect/ImmutableList;
    at util.mesurements.custom.beans.BackNeckDepthManagedBean.load(BackNeckDepthManagedBean.java:184)
    at org.primefaces.component.datatable.DataTable.loadLazyData(DataTable.java:838)
    at org.primefaces.component.datatable.feature.FilterFeature.encode(FilterFeature.java:102)
    at org.primefaces.component.datatable.DataTableRenderer.encodeEnd(DataTableRenderer.java:78)
    at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:919)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1863)
    at com.sun.faces.context.PartialViewContextImpl$PhaseAwareVisitCallback.visit(PartialViewContextImpl.java:582)
    at com.sun.faces.component.visit.PartialVisitContext.invokeVisitCallback(PartialVisitContext.java:183)
    at org.primefaces.component.api.UIData.visitTree(UIData.java:692)
    at javax.faces.component.UIComponent.visitTree(UIComponent.java:1700)
    at javax.faces.component.UIComponent.visitTree(UIComponent.java:1700)
    at javax.faces.component.UIForm.visitTree(UIForm.java:371)
    at javax.faces.component.UIComponent.visitTree(UIComponent.java:1700)
    at javax.faces.component.UIComponent.visitTree(UIComponent.java:1700)
    at com.sun.faces.context.PartialViewContextImpl.processComponents(PartialViewContextImpl.java:403)
    at com.sun.faces.context.PartialViewContextImpl.processPartial(PartialViewContextImpl.java:322)
    at javax.faces.context.PartialViewContextWrapper.processPartial(PartialViewContextWrapper.java:219)
    at org.primefaces.context.PrimePartialViewContext.processPartial(PrimePartialViewContext.java:60)
    at javax.faces.component.UIViewRoot.encodeChildren(UIViewRoot.java:1004)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1856)
    at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:430)
    at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:133)
    at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337)
    at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337)
    at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120)
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
    at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:647)
    at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:344)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
    at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:72)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
    at filter.NoCacheFilter.doFilter(NoCacheFilter.java:28)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:316)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673)
    at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174)
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:415)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:282)
    at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:459)
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:167)
    at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:201)
    at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:175)
    at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:235)
    at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:284)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:201)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:133)
    at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:112)
    at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
    at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:561)
    at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56)
    at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137)
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:565)
    at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:545)
    at java.lang.Thread.run(Thread.java:722)

我在两个应用程序上都使用 Guava 17.0(仔细检查)。

为什么番石榴不喜欢 CDI 豆。解决方案/解决方法可能是什么?


更新 :

我尝试将版本更改为 18.0,但没有发生任何新情况。

4

3 回答 3

14

您的类路径中有多个版本的 Guava。NoSuchMethodError在番石榴班上,也许每周一次。只要您不摆脱旧版本,切换到新版本将无济于事。打印出该 JAR 的位置FluentIterable.class并删除该 JAR。

正如 Frank Pavageau 评论的那样,这个位置可以通过以下方式获得

FluentIterable.class.getProtectionDomain().getCodeSource().getLocation().toExte‌​rnalForm()
于 2014-10-21T07:42:43.993 回答
6

这是一个已知的 GlassFish 问题。使用 GlassFish 4.1 并且没有其他修改,使用 Guava 13.0.1,因此当您使用该版本中不存在的功能时,您将收到与您所说的错误类似的错误。在我的情况下,它是java.lang.IncompatibleClassChangeError: Implementing class.

错误报告的评论中,建议替换glassfish/modules/guava.jar. 这似乎是最简单的解决方案。另一种方法是使用自定义类加载器。

编辑:如果你添加<class-loader delegate="false"/>到你的glassfish-web.xml,那么 Guava 是从 WAR 加载的。

于 2015-06-02T12:51:06.040 回答
2

我遇到错误 java.lang.NoSuchMethodError: com.google.common.collect.FluentIterable.append(Ljava/lang/Iterable;)Lcom/google/common/collect/FluentIterable; 从 16.0.1 切换到 guava 版本 20.0,为我解决了这个问题。

于 2020-01-14T10:30:48.977 回答