【Structs】为什么加入form-bean就错？

Question

struts-config.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "http://struts.apache.org/dtds/struts-config_1_2.dtd"><struts-config>
  <data-sources />
  <form-beans>
   <form-bean name="loginForm" type="com.demo.struts.forms.LoginForm">
   </form-bean>
  </form-beans>
  <global-exceptions />
  <global-forwards />
  <action-mappings>
   <action path="/index" forward="/login.jsp" />
<action path="/login" name="loginForm" scope="request"
type="com.demo.struts.actions.LoginAction" input="/login.jsp">
<forward name="success" path="/welcome.jsp" />
<forward name="failure" path="/login.jsp" />
</action>
  </action-mappings>
  <message-resources parameter="com.demo.struts.ApplicationResources" />
</struts-config>没加<form-bean name="loginForm" type="com.demo.struts.forms.LoginForm"></form-bean>之前，tomcat正常启动，structs正常
加了之后，启动tomcat出现如下错误,structs不能用：
org.apache.catalina.core.StandardContext loadOnStartup
严重: Servlet /demo threw load() exception
javax.servlet.UnavailableException: Parsing error processing resource path /WEB-INF/struts-config.xml
at org.apache.struts.action.ActionServlet.handleConfigException(ActionServlet.java:769)
at org.apache.struts.action.ActionServlet.parseModuleConfigFile(ActionServlet.java:745)
at org.apache.struts.action.ActionServlet.initModuleConfig(ActionServlet.java:687)
at org.apache.struts.action.ActionServlet.init(ActionServlet.java:333)
at javax.servlet.GenericServlet.init(GenericServlet.java:212)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1172)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:992)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4058)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4371)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:926)
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:889)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1149)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at org.apache.catalina.core.StandardService.start(StandardService.java:516)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:578)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)这是为什么呢？--!（form-bean type路径正确）

Answer 1

Parsing error processing resource path /WEB-INF/struts-config.xml com.demo.struts.forms.LoginForm
这个存在么，区分大小写，

Answer 2

LoginForm.java
package com.demo.struts.forms;没有问题啊

Answer 3

name="loginForm" 与其他是否同名冲突，换个名称看看，另外Parsing error processing resource path /WEB-INF/struts-config.xml 在路径无错的情况下，还可能与jdk版本或struts版本有关，更换版本尝试，

Answer 4

可能主要是commons-collections.jar包冲突，把新传的那个jar包拷贝到lib下替换掉原来的即可。 
如果再报下面的错误： 
ERROR [org.hibernate.proxy.BasicLazyInitializer] - CGLIB Enhancement failed: dao.User 
java.lang.NoSuchMethodError: org.objectweb.asm.ClassVisitor.visit(IILjava/lang/String;Ljava/lang/String;[Ljava/lang/String;Ljava/lang/String;)V 
at net.sf.cglib.core.ClassEmitter.begin_class(ClassEmitter.java:77) 
则是： 
Spring 和 Hibernate 共用的一些 jar 文件发生了版本冲突, 删除 WEB-INF/lib/asm-2.2.3.jar即可

Answer 5

谢谢heavenfeng ，果然是jdk版本的关系
我java用的是jdk6.0，而tomcat用的是myeclipse自带的jkd5.0，把tomcat的jre改成jdk6.0就解决了不过之后在配置DBCP连接池的时候又碰到了问题，加分求解struts-config.xml 
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "http://struts.apache.org/dtds/struts-config_1_2.dtd"><struts-config>
  <data-sources>
<data-source type="org.apache.commons.dbcp.BasicDataSource">
<set-property property="driverClassName"
value="org.gjt.mm.mysql.Driver" />
<set-property property="url"
value="jdbc:mysql://localhost:3306/demo" />
<set-property property="username" value="root" />
<set-property property="password" value="00000000" />
<set-property property="maxActive" value="10" />
<set-property property="maxWait" value="5000" />
<set-property property="defaultAutoCommit" value="false" />
<set-property property="defaultReadOnly" value="false" />
<set-property property="validationQuery"
value="SELECT COUNT(*) FROM user" />
</data-source>
  </data-sources>
……这个时候出现的问题是：org.apache.catalina.core.StandardContext loadOnStartup
严重: Servlet /demo threw load() exception
javax.servlet.UnavailableException: Initializing application data source org.apache.struts.action.DATA_SOURCE
at org.apache.struts.action.ActionServlet.initModuleDataSources(ActionServlet.java:812)
at org.apache.struts.action.ActionServlet.init(ActionServlet.java:335)
at javax.servlet.GenericServlet.init(GenericServlet.java:212)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1172)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:992)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4058)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4371)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:926)
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:889)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1149)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:311)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at org.apache.catalina.core.StandardService.start(StandardService.java:516)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:578)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)这是怎么回事呢？

Answer 6

[code=XML]<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "http://struts.apache.org/dtds/struts-config_1_2.dtd"><struts-config>
  <data-sources>
<data-source type="org.apache.commons.dbcp.BasicDataSource">
<set-property property="driverClassName"
value="org.gjt.mm.mysql.Driver" />
<set-property property="url"
value="jdbc:mysql://localhost:3306/demo" />
<set-property property="username" value="root" />
<set-property property="password" value="00000000" />
<set-property property="maxActive" value="10" />
<set-property property="maxWait" value="5000" />
<set-property property="defaultAutoCommit" value="false" />
<set-property property="defaultReadOnly" value="false" />
<set-property property="validationQuery"
value="SELECT COUNT(*) FROM user" />
</data-source>
  </data-sources>
  <form-beans>
   <form-bean name="loginForm" 
   type="com.demo.struts.forms.LoginForm">
   </form-bean>
   <form-bean name="registerForm"
type="com.demo.struts.forms.RegisterForm">
</form-bean>
  </form-beans>
  <global-exceptions />
  <global-forwards />
  <action-mappings>
   <action path="/index" forward="/login.jsp" />
  
<action path="/login" name="loginForm" scope="request"
type="com.demo.struts.actions.LoginAction" input="/login.jsp">
<forward name="success" path="/welcome.jsp" />
<forward name="failure" path="/login.jsp" />
</action>

<action path="/logout"
type="com.demo.struts.actions.LogoutAction">
<forward name="logout" path="/login.jsp" />
</action>

<action path="/register" parameter="method" name="registerForm"
scope="request" type="com.demo.struts.actions.RegisterAction"
input="/register.jsp">
<forward name="success" path="/login.jsp" />
<forward name="failure" path="/register.jsp" />
</action>

  </action-mappings>
  <message-resources parameter="com.demo.struts.ApplicationResources" />
</struts-config>code]