Question

我正在使用Eclipse Mars，Tomcat7，Java8，Sysdeo DevLoader，我跟着a Tynamo tutorial配置了tomcat插件。

我有两个几乎相同的Tapestry项目。一个应用程序工作正常另一个不会提供任何页面，抛出：

SEVERE: Servlet.service() for servlet [default] in context with path [/admin] threw exception
java.lang.RuntimeException: Exception constructing service 'WebSecurityManager': Error invoking constructor public org.tynamo.security.services.TapestryRealmSecurityManager(org.tynamo.security.Authenticator,org.apache.shiro.mgt.SubjectFactory,org.apache.shiro.mgt.RememberMeManager,java.util.Collection): Realms collection argument cannot be empty.
    at org.apache.tapestry5.ioc.internal.services.JustInTimeObjectCreator.obtainObjectFromCreator(JustInTimeObjectCreator.java:75)
...
Caused by: java.lang.IllegalArgumentException: Realms collection argument cannot be empty.
at org.apache.shiro.mgt.RealmSecurityManager.setRealms(RealmSecurityManager.java:78)
at org.tynamo.security.services.TapestryRealmSecurityManager.<init>(TapestryRealmSecurityManager.java:31)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:422)
at org.apache.tapestry5.ioc.internal.util.ConstructorInvoker.invoke(ConstructorInvoker.java:48)
... 50 more

问题似乎源于在安全管理器尝试获取AppModule.addRealms之前未在问题应用中调用Subject。实际上，似乎其中一个应用程序享有“Tapestry处理”而另一个则没有。这是有效的：

Nov 05, 2015 11:45:53 AM org.apache.catalina.startup.HostConfig deployDescriptor
INFO: Deploying configuration descriptor /etc/tomcat7/Catalina/localhost/bray.xml
Nov 05, 2015 11:45:53 AM org.apache.catalina.core.StandardContext setPath
WARNING: A context path must either be an empty string or start with a '/'. The path [bray] does not meet these criteria and has been changed to [/bray]
Nov 05, 2015 11:45:53 AM org.apache.tomcat.util.digester.SetPropertiesRule begin
WARNING: [SetPropertiesRule]{Context/Loader} Setting property 'debug' to '1' did not find a matching property.
Nov 05, 2015 11:45:53 AM org.apache.tomcat.util.digester.SetPropertiesRule begin
WARNING: [SetPropertiesRule]{Context/Loader} Setting property 'useSystemClassLoaderAsParent' to 'false' did not find a matching property.
[DevLoader] Starting DevLoader
[DevLoader] projectdir=/home/claude/git/bray/src/main/webapp
[DevLoader] added file:/home/claude/git/bray/target/classes/
...
[INFO] ioc.RegistryBuilder Adding module definition for class com.mydomain.services.AppModule
[INFO] TapestryModule.ComponentClassResolver Available pages (16):
              (blank): com.mydomain.pages.Index
                About: com.mydomain.pages.About

然后我看到来自Tapestry的好“hello”和我的其他项目（admin）出现了：

...
Application 'app' (version 1.0-SNAPSHOT) startup time: 172 ms to build IoC Registry, 541 ms overall.

 ______                  __             ____
/_  __/__ ____  ___ ___ / /_______ __  / __/
 / / / _ `/ _ \/ -_|_-</ __/ __/ // / /__ \ 
/_/  \_,_/ .__/\__/___/\__/_/  \_, / /____/
        /_/                   /___/  5.3.8 (development mode)


Nov 05, 2015 11:45:58 AM org.apache.catalina.startup.HostConfig deployDescriptor
INFO: Deploying configuration descriptor /etc/tomcat7/Catalina/localhost/admin.xml
Nov 05, 2015 11:45:58 AM org.apache.tomcat.util.digester.SetPropertiesRule begin
WARNING: [SetPropertiesRule]{Context/Loader} Setting property 'debug' to '1' did not find a matching property.
Nov 05, 2015 11:45:58 AM org.apache.tomcat.util.digester.SetPropertiesRule begin
WARNING: [SetPropertiesRule]{Context/Loader} Setting property 'useSystemClassLoaderAsParent' to 'false' did not find a matching property.
[DevLoader] Starting DevLoader
[DevLoader] projectdir=/home/claude/git/tegu/admin/src/main/webapp
...
Nov 05, 2015 11:45:58 AM org.apache.catalina.deploy.WebXml setVersion
WARNING: Unknown version string [3.1]. Default version will be used.
log4j:WARN No appenders could be found for logger (org.apache.tapestry5.ioc.RegistryBuilder).
log4j:WARN Please initialize the log4j system properly.
Nov 05, 2015 11:46:02 AM org.apache.catalina.startup.HostConfig deployDescriptor
INFO: Deploying configuration descriptor /etc/tomcat7/Catalina/localhost/manager.xml
Nov 05, 2015 11:46:02 AM org.apache.catalina.startup.HostConfig deployDescriptor
INFO: Deploying configuration descriptor /etc/tomcat7/Catalina/localhost/docs.xml
Nov 05, 2015 11:46:02 AM org.apache.catalina.startup.HostConfig deployDescriptor
INFO: Deploying configuration descriptor /etc/tomcat7/Catalina/localhost/host-manager.xml
Nov 05, 2015 11:46:02 AM org.apache.catalina.startup.HostConfig deployDescriptor
INFO: Deploying configuration descriptor /etc/tomcat7/Catalina/localhost/examples.xml

我希望在部署admin.xml描述符后看到类似的内容：

[INFO] ioc.RegistryBuilder Adding module definition for class com.myotherdomain.admin.services.AppModule
[INFO] TapestryModule.ComponentClassResolver Available pages (16):

......而是沉默。我看不出两个应用程序中有什么不同会导致一个工作而另一个工作失败。我应该在哪里看？

Answer 1

DevLoader Classpath错了。解决了修复一切的问题。

DevLoader Classpath不包含路径//p[text()="<u>***</u>"] - 以及我应用的AppModule所在的位置（确切地说是/myapp/target/classes）。这可以在/myapp/target/classes/com/mydomain/myapp/services/AppModule.class中修复，并选中正确路径的复选框。在名为Project -> Properties -> Tomcat的{{1}}项目旁边的文件中也可以看到错误的配置，该文件说明了完整路径（相对路径显示在配置页面中）。修复设置后，启动Tomcat并自动更新WEB-INF。

RegistryBuilder没有为一个项目添加Tapestry AppModule，适用于另一个项目

1 个答案: