无法将Tapestry jars与战争中的页面代码一起移出战场仍然

我试图进行实验，因为我们有多个网络战争，并且至少有2个使用Tapestry 5.4.1。无法将Tapestry jars与战争中的页面代码一起移出战场仍然

这个想法是将Tapestry相关的jar放在系统类路径上的战争外的一个地方。

但是，当我尝试在浏览器内打开一个Tapestry页面时，它抱怨在准备构建它时显示时找不到页面类/代码。

我猜在战争之外的Tapestry类没有看到WAR内的页面类。

那么，我真的有可能尝试？对我来说，它看起来不像Tapestry jar应该在Tapestry页面代码所在的类路径的相同级别。

异常跟踪

java.lang.RuntimeException: Exception assembling root component of page ExceptionReport: Exception assembling embedded component 'layout' (of type myproject.web.components.Layout, within ExceptionReport): Could not convert 'style' into a component parameter binding: Exception generating conduit for expression 'style': java.lang.RuntimeException: java.lang.ClassNotFoundException: myproject.web.pages.reassign.ReAssign 
    org.apache.tapestry5.internal.pageload.ComponentAssemblerImpl.performAssembleRootComponent(ComponentAssemblerImpl.java:129) 
    org.apache.tapestry5.internal.pageload.ComponentAssemblerImpl.access$000(ComponentAssemblerImpl.java:37) 
    org.apache.tapestry5.internal.pageload.ComponentAssemblerImpl$1.invoke(ComponentAssemblerImpl.java:81) 
    org.apache.tapestry5.internal.pageload.ComponentAssemblerImpl$1.invoke(ComponentAssemblerImpl.java:78) 
    org.apache.tapestry5.ioc.internal.OperationTrackerImpl.invoke(OperationTrackerImpl.java:82) 
    org.apache.tapestry5.ioc.internal.PerThreadOperationTracker.invoke(PerThreadOperationTracker.java:72) 
    org.apache.tapestry5.ioc.internal.RegistryImpl.invoke(RegistryImpl.java:1260) 
    org.apache.tapestry5.internal.pageload.ComponentAssemblerImpl.assembleRootComponent(ComponentAssemblerImpl.java:76) 
    org.apache.tapestry5.internal.pageload.PageLoaderImpl$3.invoke(PageLoaderImpl.java:197) 
    org.apache.tapestry5.internal.pageload.PageLoaderImpl$3.invoke(PageLoaderImpl.java:190) 
    org.apache.tapestry5.ioc.internal.OperationTrackerImpl.invoke(OperationTrackerImpl.java:82) 
    org.apache.tapestry5.ioc.internal.PerThreadOperationTracker.invoke(PerThreadOperationTracker.java:72) 
    org.apache.tapestry5.ioc.internal.RegistryImpl.invoke(RegistryImpl.java:1260) 
    org.apache.tapestry5.internal.pageload.PageLoaderImpl.loadPage(PageLoaderImpl.java:189) 
    $PageLoader_12d4e53af23f.loadPage(Unknown Source) 
    org.apache.tapestry5.internal.services.PageSourceImpl.getPage(PageSourceImpl.java:104) 
    $PageSource_12d4e53af23e.getPage(Unknown Source) 
    org.apache.tapestry5.internal.services.RequestPageCacheImpl.get(RequestPageCacheImpl.java:86) 
    $RequestPageCache_12d4e53af23d.get(Unknown Source) 
    $RequestPageCache_12d4e53af20f.get(Unknown Source) 
    org.apache.tapestry5.internal.services.DefaultRequestExceptionHandler.renderException(DefaultRequestExceptionHandler.java:254) 
    org.apache.tapestry5.internal.services.DefaultRequestExceptionHandler.handleRequestException(DefaultRequestExceptionHandler.java:145) 
    $RequestExceptionHandler_12d4e53af1f7.handleRequestException(Unknown Source) 
    org.apache.tapestry5.internal.services.RequestErrorFilter.service(RequestErrorFilter.java:42) 
    $RequestHandler_12d4e53af1f9.service(Unknown Source) 
    org.apache.tapestry5.modules.TapestryModule$3.service(TapestryModule.java:846) 
    $RequestHandler_12d4e53af1f9.service(Unknown Source) 
    org.apache.tapestry5.modules.TapestryModule$2.service(TapestryModule.java:836) 
    $RequestHandler_12d4e53af1f9.service(Unknown Source) 
    org.apache.tapestry5.internal.services.StaticFilesFilter.service(StaticFilesFilter.java:89) 
    $RequestHandler_12d4e53af1f9.service(Unknown Source) 
    $RequestHandler_12d4e53af1ef.service(Unknown Source) 
    org.apache.tapestry5.modules.TapestryModule$HttpServletRequestHandlerTerminator.service(TapestryModule.java:256) 
    org.got5.tapestry5.jquery.services.AjaxUploadServletRequestFilter.service(AjaxUploadServletRequestFilter.java:27) 
    $HttpServletRequestHandler_12d4e53af1f1.service(Unknown Source) 
    org.apache.tapestry5.upload.internal.services.MultipartServletRequestFilter.service(MultipartServletRequestFilter.java:45) 
    $HttpServletRequestHandler_12d4e53af1f1.service(Unknown Source) 
    org.apache.tapestry5.internal.gzip.GZipFilter.service(GZipFilter.java:59) 
    $HttpServletRequestHandler_12d4e53af1f1.service(Unknown Source) 
    org.apache.tapestry5.internal.services.IgnoredPathsFilter.service(IgnoredPathsFilter.java:62) 
    $HttpServletRequestFilter_12d4e53af1eb.service(Unknown Source) 
    $HttpServletRequestHandler_12d4e53af1f1.service(Unknown Source) 
    org.apache.tapestry5.modules.TapestryModule$1.service(TapestryModule.java:796) 
    $HttpServletRequestHandler_12d4e53af1f1.service(Unknown Source) 
    $HttpServletRequestHandler_12d4e53af1ea.service(Unknown Source) 
    org.apache.tapestry5.TapestryFilter.doFilter(TapestryFilter.java:166) 
root cause 

org.apache.tapestry5.ioc.internal.OperationException: Exception assembling embedded component 'layout' (of type myproject.web.components.Layout, within ExceptionReport): Could not convert 'style' into a component parameter binding: Exception generating conduit for expression 'style': java.lang.RuntimeException: java.lang.ClassNotFoundException: myproject.web.pages.reassign.ReAssign [at classpath:myproject/web/pages/ExceptionReport.tml, line 3] 
    org.apache.tapestry5.ioc.internal.OperationTrackerImpl.logAndRethrow(OperationTrackerImpl.java:186) 
    org.apache.tapestry5.ioc.internal.OperationTrackerImpl.run(OperationTrackerImpl.java:62) 
    org.apache.tapestry5.ioc.internal.PerThreadOperationTracker.run(PerThreadOperationTracker.java:60) 
    org.apache.tapestry5.ioc.internal.RegistryImpl.run(RegistryImpl.java:1254) 
    org.apache.tapestry5.internal.pageload.ComponentAssemblerImpl.assembleEmbeddedComponent(ComponentAssemblerImpl.java:158) 
    org.apache.tapestry5.internal.pageload.PageLoaderImpl$12.execute(PageLoaderImpl.java:963) 
    org.apache.tapestry5.internal.pageload.ComponentAssemblerImpl.runActions(ComponentAssemblerImpl.java:229) 
    org.apache.tapestry5.internal.pageload.ComponentAssemblerImpl.performAssembleRootComponent(ComponentAssemblerImpl.java:105) 
    org.apache.tapestry5.internal.pageload.ComponentAssemblerImpl.access$000(ComponentAssemblerImpl.java:37) 
    org.apache.tapestry5.internal.pageload.ComponentAssemblerImpl$1.invoke(ComponentAssemblerImpl.java:81) 
    org.apache.tapestry5.internal.pageload.ComponentAssemblerImpl$1.invoke(ComponentAssemblerImpl.java:78) 
    org.apache.tapestry5.ioc.internal.OperationTrackerImpl.invoke(OperationTrackerImpl.java:82) 
    org.apache.tapestry5.ioc.internal.PerThreadOperationTracker.invoke(PerThreadOperationTracker.java:72) 
    org.apache.tapestry5.ioc.internal.RegistryImpl.invoke(RegistryImpl.java:1260) 
    org.apache.tapestry5.internal.pageload.ComponentAssemblerImpl.assembleRootComponent(ComponentAssemblerImpl.java:76) 
    org.apache.tapestry5.internal.pageload.PageLoaderImpl$3.invoke(PageLoaderImpl.java:197) 
    org.apache.tapestry5.internal.pageload.PageLoaderImpl$3.invoke(PageLoaderImpl.java:190) 
    org.apache.tapestry5.ioc.internal.OperationTrackerImpl.invoke(OperationTrackerImpl.java:82) 
    org.apache.tapestry5.ioc.internal.PerThreadOperationTracker.invoke(PerThreadOperationTracker.java:72) 
    org.apache.tapestry5.ioc.internal.RegistryImpl.invoke(RegistryImpl.java:1260) 
    org.apache.tapestry5.internal.pageload.PageLoaderImpl.loadPage(PageLoaderImpl.java:189) 
    $PageLoader_12d4e53af23f.loadPage(Unknown Source) 
    org.apache.tapestry5.internal.services.PageSourceImpl.getPage(PageSourceImpl.java:104) 
    $PageSource_12d4e53af23e.getPage(Unknown Source) 
    org.apache.tapestry5.internal.services.RequestPageCacheImpl.get(RequestPageCacheImpl.java:86) 
    $RequestPageCache_12d4e53af23d.get(Unknown Source) 
    $RequestPageCache_12d4e53af20f.get(Unknown Source) 
    org.apache.tapestry5.internal.services.DefaultRequestExceptionHandler.renderException(DefaultRequestExceptionHandler.java:254) 
    org.apache.tapestry5.internal.services.DefaultRequestExceptionHandler.handleRequestException(DefaultRequestExceptionHandler.java:145) 
    $RequestExceptionHandler_12d4e53af1f7.handleRequestException(Unknown Source) 
    org.apache.tapestry5.internal.services.RequestErrorFilter.service(RequestErrorFilter.java:42) 
    $RequestHandler_12d4e53af1f9.service(Unknown Source) 
    org.apache.tapestry5.modules.TapestryModule$3.service(TapestryModule.java:846) 
    $RequestHandler_12d4e53af1f9.service(Unknown Source) 
    org.apache.tapestry5.modules.TapestryModule$2.service(TapestryModule.java:836) 
    $RequestHandler_12d4e53af1f9.service(Unknown Source) 
    org.apache.tapestry5.internal.services.StaticFilesFilter.service(StaticFilesFilter.java:89) 
    $RequestHandler_12d4e53af1f9.service(Unknown Source) 
    $RequestHandler_12d4e53af1ef.service(Unknown Source) 
    org.apache.tapestry5.modules.TapestryModule$HttpServletRequestHandlerTerminator.service(TapestryModule.java:256) 
    org.got5.tapestry5.jquery.services.AjaxUploadServletRequestFilter.service(AjaxUploadServletRequestFilter.java:27) 
    $HttpServletRequestHandler_12d4e53af1f1.service(Unknown Source) 
    org.apache.tapestry5.upload.internal.services.MultipartServletRequestFilter.service(MultipartServletRequestFilter.java:45) 
    $HttpServletRequestHandler_12d4e53af1f1.service(Unknown Source) 
    org.apache.tapestry5.internal.gzip.GZipFilter.service(GZipFilter.java:59) 
    $HttpServletRequestHandler_12d4e53af1f1.service(Unknown Source) 
    org.apache.tapestry5.internal.services.IgnoredPathsFilter.service(IgnoredPathsFilter.java:62) 
    $HttpServletRequestFilter_12d4e53af1eb.service(Unknown Source) 
    $HttpServletRequestHandler_12d4e53af1f1.service(Unknown Source) 
    org.apache.tapestry5.modules.TapestryModule$1.service(TapestryModule.java:796) 
    $HttpServletRequestHandler_12d4e53af1f1.service(Unknown Source) 
    $HttpServletRequestHandler_12d4e53af1ea.service(Unknown Source) 
    org.apache.tapestry5.TapestryFilter.doFilter(TapestryFilter.java:166)

来源

2017-02-23 sonu131

我不认为这个评论涉及到Tapestry，它是一个Tomcat类路径问题。你在哪里放置Tapestry罐子？确保你熟悉这个：http://tomcat.apache.org/tomcat-8.5-doc/class-loader-howto.html –

感谢您的答复，我试图将罐子移动到外部文件夹和来自该位置的罐子对于使用指向该外部位置的所有罐子的common.loader属性的tomcat的通用类加载器是可见的。 – sonu131

我理解的问题是Tapestry内部类的页面类可见性，这些内部类现在处于父类加载器（在本例中是通用的）。所以，当第一个布局页面被请求时，Tapestry会尝试构建和组装它，并且控件位于Common classloader中，当Tapestry内部类尝试加载在原始布局页面中注入的另一个页面时，它会尝试查找该页面类（在这种情况下是评论页面），并且由于页面代码仍然在子类加载器中，它是webappX，它无法找到该类并且失败。 – sonu131

几天前，在JBoss的下一个7.0.0.GA新项目的工作，我竟被这个问题hitted;我调查了这个问题，并发现了所有邪恶的根源：塑料类“org.apache.tapestry5.internal.plastic.asm.ClassWriter”。

用于通过塑料查找（和加载）类的类加载器实际上与应用服务器不兼容。需要应用服务器来强制执行类加载的隔离，而塑料忽略这一点。无论如何，塑料可以修补以解决问题;在这里我附上一个补丁，请问一些开发人员是否愿意将这个补丁应用到5.4.x分支和5.5。

我也想感谢这些家伙来帮我把重点问题：

Unable to move Tapestry jars out of the war with page code inside the war still https://blog.progs.be/50/tapestry-classloading-problems-on-jboss

问候

这里是原代码：

1752 protected String getCommonSuperClass(final String type1, final String type2) { 
1753 Class<?> c, d; 
1754 ClassLoader classLoader = getClass().getClassLoader(); 
1755 try { 
1756  c = Class.forName(type1.replace('/', '.'), false, classLoader); 
1757  d = Class.forName(type2.replace('/', '.'), false, classLoader); 
1758 } catch (Exception e) { 
1759  throw new RuntimeException(e.toString()); 
1760 } 
1761 if (c.isAssignableFrom(d)) { 
1762  return type1; 
1763 } 
1764 if (d.isAssignableFrom(c)) { 
1765  return type2; 
1766 } 
1767 if (c.isInterface() || d.isInterface()) { 
1768  return "java/lang/Object"; 
1769 } else { 
1770 do { 
1771  c = c.getSuperclass(); 
1772 } while (!c.isAssignableFrom(d)); 
1773 return c.getName().replace('.', '/'); 
1774 } 
1775 }

她e是修补代码：

1752 protected String getCommonSuperClass(final String type1, final String type2) { 
1753 Class<?> c, d; 
1754 ClassLoader classLoader = getClass().getClassLoader(); 
1755 try { 
1756  c = Class.forName(type1.replace('/', '.'), false, classLoader); 
1757  d = Class.forName(type2.replace('/', '.'), false, classLoader); 
1758 } catch (Exception e) { 
// --- ARZILLO PATCH BEGIN ----------------------------------------------------------- 

     System.err.println("WARNING: type1:" + type1 + ", type2: " + type2 + ", exception: " + e + ", classLoader: " + classLoader +", attempting to use the classloader of the current thread"); 

     classLoader = Thread.currentThread().getContextClassLoader(); 
     if (classLoader != null) { 
      try { 
      c = Class.forName(type1.replace('/', '.'), false, classLoader); 
      d = Class.forName(type2.replace('/', '.'), false, classLoader); 
      } 
      catch (Exception e_inner) { 
      System.err.println("ERROR 1: type1:" + type1 + ", type2: " + type2 + ", e_inner: " + e_inner + ", classLoader: " + classLoader +", failed even using the classloader of the current thread"); 
      throw new RuntimeException(e_inner.toString()); 
      } 
     } 
     else { 
      System.err.println("ERROR 2: type1:" + type1 + ", type2: " + type2 + ", exception: " + e + ", classLoader: " + classLoader +", unable to get the classloader of the current thread"); 
      throw new RuntimeException(e.toString()); 
     } 
// --- ARZILLO PATCH END ------------------------------------------------ ----------- 
1760 } 
1761 if (c.isAssignableFrom(d)) { 
1762  return type1; 
1763 } 
1764 if (d.isAssignableFrom(c)) { 
1765  return type2; 
1766 } 
1767 if (c.isInterface() || d.isInterface()) { 
1768  return "java/lang/Object"; 
1779 } else { 
1770  do { 
1771  c = c.getSuperclass(); 
1772  } while (!c.isAssignableFrom(d)); 
1773 return c.getName().replace('.', '/'); 
1774 } 
1775 }

来源

2017-12-01 16:51:05 arzillo

无法将Tapestry jars与战争中的页面代码一起移出战场仍然

回答

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