2

我在 TomEE 中运行一个 JSF 项目。我将它升级到 MyFace 2.1.8。我正在使用 Oracle JVM 1.7.04 在 OSX 上运行一切

所以我有这个 ViewScoped 的 ManagedBean：

@ManagedBean
@ViewScoped
public class BlogMB implements Serializable {
    private static final long serialVersionUID = 1L;
    @EJB
    private CategoryService categoryService;
}

这是视图代码：

<h:commandLink value="#{category.name}">
    <f:setPropertyActionListener
        target="#{blogMB.selectedCategory}"
        value="#{category}" />
    <f:ajax
        listener="#{blogMB.filterPostsByCategory()}"
        execute="@this"
        render=":blogPosts" />
</h:commandLink>

导致此堆栈跟踪。到底他妈发生了什么？我知道它需要反序列化句柄，但为什么在类路径上找不到我的服务类？

Jul 06, 2012 8:25:51 PM org.apache.myfaces.renderkit.ServerSideStateCacheImpl deserializeView
SEVERE: Exiting deserializeView - Could not deserialize state: com.xxx.blog.service.CategoryService
java.lang.ClassNotFoundException: com.xxx.blog.service.CategoryService
    at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:264)
    at java.io.ObjectInputStream.resolveProxyClass(ObjectInputStream.java:694)
    at java.io.ObjectInputStream.readProxyDesc(ObjectInputStream.java:1549)
    at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1511)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1750)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1964)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1888)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1771)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369)
    at java.util.HashMap.readObject(HashMap.java:1043)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:601)
    at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1004)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1866)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1771)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347)
    at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1685)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1341)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369)
    at java.util.HashMap.readObject(HashMap.java:1043)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:601)
    at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1004)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1866)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1771)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347)
    at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1685)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1341)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369)
    at org.apache.myfaces.renderkit.ServerSideStateCacheImpl.deserializeView(ServerSideStateCacheImpl.java:497)
    at org.apache.myfaces.renderkit.ServerSideStateCacheImpl.getSerializedViewFromServletSession(ServerSideStateCacheImpl.java:289)
    at org.apache.myfaces.renderkit.ServerSideStateCacheImpl.restoreSerializedView(ServerSideStateCacheImpl.java:891)
    at org.apache.myfaces.renderkit.html.HtmlResponseStateManager.getState(HtmlResponseStateManager.java:205)
    at org.apache.myfaces.view.facelets.DefaultFaceletsStateManagementStrategy.restoreView(DefaultFaceletsStateManagementStrategy.java:207)
    at org.apache.myfaces.application.StateManagerImpl.restoreView(StateManagerImpl.java:130)
    at org.apache.myfaces.shared.view.ViewDeclarationLanguageBase.restoreView(ViewDeclarationLanguageBase.java:106)
    at org.apache.myfaces.view.facelets.FaceletViewDeclarationLanguage.restoreView(FaceletViewDeclarationLanguage.java:2109)
    at org.apache.myfaces.application.ViewHandlerImpl.restoreView(ViewHandlerImpl.java:300)
    at com.ocpsoft.pretty.faces.application.PrettyViewHandler.restoreView(PrettyViewHandler.java:109)
    at javax.faces.application.ViewHandlerWrapper.restoreView(ViewHandlerWrapper.java:83)
    at org.apache.myfaces.lifecycle.RestoreViewExecutor.execute(RestoreViewExecutor.java:127)
    at org.apache.myfaces.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:170)
    at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:117)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:197)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at com.ocpsoft.pretty.PrettyFilter.doFilter(PrettyFilter.java:145)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at org.omnifaces.filter.GzipResponseFilter.doFilter(GzipResponseFilter.java:147)
    at org.omnifaces.filter.HttpFilter.doFilter(HttpFilter.java:75)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
    at org.apache.tomee.catalina.OpenEJBValve.invoke(OpenEJBValve.java:44)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:999)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:565)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:309)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
    at java.lang.Thread.run(Thread.java:722)

编辑更新：

记录票https://issues.apache.org/jira/browse/MYFACES-3581

4

2 回答 2

3

看起来我们需要修补deserializeViewMyFaces 中的方法。长话短说 ObjectInputStream 不使用线程上下文 ClassLoader ( Thread.currentThread().getClassLoader())。所以这种“使用正确的类加载器，该死！” 修复在应用服务器中非常普遍。如果 MyFaces 在里面，WEB-INF/lib/那么这会神奇地消失，因为 MyFaces 和被反序列化的类将在同一个类加载器中。不过，移动 MyFaces 并不是正确的解决方法。修补它更好。

当进行反序列化的类在父类加载器中，因此无法看到来自众多子类加载器（每个 webapp 一个）的类时，您通常必须这样做：

import java.io.*;
import java.lang.reflect.Proxy;

public class SmarterObjectInputStream extends ObjectInputStream {

    public SmarterObjectInputStream(InputStream in) throws IOException {
        super(in);
    }

    protected Class resolveClass(ObjectStreamClass classDesc) throws IOException, ClassNotFoundException {
        try {
            return Class.forName(classDesc.getName(), false, getClassloader());
        } catch (ClassNotFoundException e) {
            String n = classDesc.getName();
            if (n.equals("boolean")) return boolean.class;
            if (n.equals("byte")) return byte.class;
            if (n.equals("char")) return char.class;
            if (n.equals("short")) return short.class;
            if (n.equals("int")) return int.class;
            if (n.equals("long")) return long.class;
            if (n.equals("float")) return float.class;
            if (n.equals("double")) return double.class;

            throw e;
        }
    }

    protected Class resolveProxyClass(String[] interfaces) throws IOException, ClassNotFoundException {
        Class[] cinterfaces = new Class[interfaces.length];
        for (int i = 0; i < interfaces.length; i++)
            cinterfaces[i] = getClassloader().loadClass(interfaces[i]);

        try {
            return Proxy.getProxyClass(getClassloader(), cinterfaces);
        } catch (IllegalArgumentException e) {
            throw new ClassNotFoundException(null, e);
        }
    }

    private ClassLoader getClassloader() {
        return Thread.currentThread().getContextClassLoader();
    }
}

我们需要给 MyFaces 这个SmarterObjectInputStream并确保他们在deserializeView方法中使用它。

如果您希望获得修补的荣誉，那就太好了，我相信 MyFaces 会非常高兴看到 TomEE 用户贡献修复。到目前为止，您已经做出了一些伟大的贡献！

于 2012-07-07T02:39:51.350 回答
0

可能的解决方法可以在您的 web.xml 中设置以下内容：

<context-param>
    <param-name>org.apache.myfaces.SERIALIZE_STATE_IN_SESSION</param-name>
    <param-value>false</param-value>
</context-param>

虽然这是相当不标准的，我还没有测试过。

于 2012-07-16T16:14:34.333 回答