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社区首页 >问答首页 >Vaadin7项目wirh + Tomcat7编译错误

问Vaadin7项目wirh + Tomcat7编译错误
EN

Stack Overflow用户
提问于 2014-06-01 13:37:22
回答 1查看 444关注 0票数 0

嗨，我在Vaadin7项目工作。

我在编写这个项目时遇到了困难。

我真的很沮丧，因为我不能运行一个简单的HelloWorld项目：

我在OSX上使用月食开普勒。

我所做和尝试的事情如下。

  • 使用一些选项(添加vaadin-archtype-application)创建了一个Maven项目。
  • 将<dependency>vaadin-charts添加到pom.xml。我跟着导游来了。链接：https://vaadin.com/book/vaadin7/-/page/addons.maven.html
  • 使用Tomcat运行这个项目，我得到了有关widgetset的错误消息。所以我做了maven构建，就像Link说的那样。链接：在eclipse中maven项目中加载Widgetset失败
  • 以Maven clean形式运行项目
  • 找到了关于版本的两个警告(apache编译器-plugin，org-mortbat jetty)，所以我添加了标记。分别为3.1和8.1.15.v20140411(在Maven Repository站点中找到)
  • 看起来一切都很好，但我的项目显示了404 error

这里没有web.xml，我真的不知道在哪里修复这个问题。

我觉得在Chrome上看“点击”按钮已经很近了，但是找不到。

我的错误日志在下面

代码语言：javascript
复制
SEVERE: ClassNotFoundException while loading persisted sessions: java.lang.ClassNotFoundException: org.owls.test.VaadinMay.MyVaadinUI
java.lang.ClassNotFoundException: org.owls.test.VaadinMay.MyVaadinUI
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1702)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1547)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:270)
    at org.apache.catalina.util.CustomObjectInputStream.resolveClass(CustomObjectInputStream.java:76)
    at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1612)
    at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1517)
    at java.io.ObjectInputStream.readClass(ObjectInputStream.java:1483)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1333)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
    at java.util.HashMap.readObject(HashMap.java:1183)
    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:606)
    at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1893)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990)
    at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:500)
    at com.vaadin.server.VaadinSession.readObject(VaadinSession.java:1436)
    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:606)
    at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1893)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
    at org.apache.catalina.session.StandardSession.readObject(StandardSession.java:1597)
    at org.apache.catalina.session.StandardSession.readObjectData(StandardSession.java:1062)
    at org.apache.catalina.session.StandardManager.doLoad(StandardManager.java:284)
    at org.apache.catalina.session.StandardManager.load(StandardManager.java:204)
    at org.apache.catalina.session.StandardManager.startInternal(StandardManager.java:491)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5443)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
    at java.util.concurrent.FutureTask.run(FutureTask.java:262)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:744)

Jun 01, 2014 10:39:41 PM org.apache.catalina.session.StandardManager startInternal
SEVERE: Exception loading sessions from persistent storage
java.lang.ClassNotFoundException: org.owls.test.VaadinMay.MyVaadinUI
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1702)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1547)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:270)
    at org.apache.catalina.util.CustomObjectInputStream.resolveClass(CustomObjectInputStream.java:76)
    at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1612)
    at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1517)
    at java.io.ObjectInputStream.readClass(ObjectInputStream.java:1483)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1333)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
    at java.util.HashMap.readObject(HashMap.java:1183)
    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:606)
    at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1893)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990)
    at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:500)
    at com.vaadin.server.VaadinSession.readObject(VaadinSession.java:1436)
    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:606)
    at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1893)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
    at org.apache.catalina.session.StandardSession.readObject(StandardSession.java:1597)
    at org.apache.catalina.session.StandardSession.readObjectData(StandardSession.java:1062)
    at org.apache.catalina.session.StandardManager.doLoad(StandardManager.java:284)
    at org.apache.catalina.session.StandardManager.load(StandardManager.java:204)
    at org.apache.catalina.session.StandardManager.startInternal(StandardManager.java:491)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5443)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
    at java.util.concurrent.FutureTask.run(FutureTask.java:262)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:744)

谢谢你和我分享我的问题

2014年06月02日============编辑=======================

我的马文干净得很。我附上了原木

代码语言：javascript
复制
[INFO] Scanning for projects...
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building Vaadin Web Application 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ VaadinMvn ---
[INFO] Deleting /Users/juneyoungoh/Documents/vaadinwork/VaadinMvn/target
[INFO] 
[INFO] --- vaadin-maven-plugin:7.1.8:clean (default) @ VaadinMvn ---
[INFO] auto discovered modules [org.owls.test.VaadinMvn.AppWidgetSet]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.496s
[INFO] Finished at: Mon Jun 02 21:32:12 KST 2014
[INFO] Final Memory: 6M/81M
[INFO] ------------------------------------------------------------------------

=========编辑#02 ========================

上面的是Maven干净，我在Maven构建中发现了一个错误。

我想这可能是条线索。

代码语言：javascript
复制
[INFO] --- vaadin-maven-plugin:7.1.8:update-theme (default) @ VaadinMvn ---
[INFO] Updating theme VAADIN/themes/mytheme
[ERROR] Jun 02, 2014 10:22:16 PM com.vaadin.server.widgetsetutils.ClassPathExplorer getAvailableWidgetSetsAndStylesheets
[ERROR] INFO: Widgetsets found from classpath:
[ERROR]     com.vaadin.DefaultWidgetSet in jar:file:/Users/juneyoungoh/.m2/repository/com/vaadin/vaadin-client/7.1.8/vaadin-client-7.1.8.jar!/
[ERROR]     com.vaadin.addon.charts.Widgetset in jar:file:/Users/juneyoungoh/.m2/repository/com/vaadin/addon/vaadin-charts/1.0.0/vaadin-charts-1.0.0.jar!/
[ERROR]     com.vaadin.addon.timeline.gwt.TimelineWidgetSet in jar:file:/Users/juneyoungoh/.m2/repository/com/vaadin/addon/vaadin-charts/1.0.0/vaadin-charts-1.0.0.jar!/
[ERROR]     org.owls.test.VaadinMvn.AppWidgetSet in file:/Users/juneyoungoh/Documents/vaadinwork/VaadinMvn/src/main/java
[ERROR] Addon styles found from classpath:
[ERROR] 
[ERROR] Jun 02, 2014 10:22:17 PM com.vaadin.server.widgetsetutils.ClassPathExplorer getAvailableWidgetSetsAndStylesheets
[ERROR] INFO: Search took 27ms

我在Vaadin论坛上找到了一篇文章。但这看起来不像是我的问题。是关于常春藤的环境。然而，链接在下面

https://vaadin.com/forum/#!/thread/3529974

maven
tomcat
vaadin7
java
eclipse
EN

回答 1

Stack Overflow用户

发布于 2014-06-02 14:28:37

1) SEVERE: ClassNotFoundException while loading persisted sessions:java.lang.ClassNotFoundException: org.owls.test.VaadinMay.MyVaadinUI弹出，因为Tomcat试图反序列化以前保存的会话，同时您可能更改了一些类名。可以通过编辑CATALINA_HOME/conf/context.xml文件全局禁用此功能。您应该找到一行内容为“取消注释以禁用会话.”更多关于这个这里的信息

2) HTTP 404应该与上面的要点无关，这很可能是由于您的servlet配置所致。因为您没有web.xml，所以一切都应该从您的UI中设置。打开MyVaadinUi，或者您已经重命名它的任何东西，然后查看vaadin文档中描述的URL路径映射的配置(向下滚动到4.8.5Servlet映射和vaadin文档模式)。确保您正在按照此配置访问localhost上的应用程序，您应该会很好。

票数 1
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：

https://stackoverflow.com/questions/23980446

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