第一次发帖，大家帮帮我吧

Question

用struts2 spring hibernate做了个小程序，但是每次部署时都是报以下错误，我的各个jar文件都引了，试了好几次，就是不对，大家帮帮我吧！
2010-4-24 20:33:18 org.apache.catalina.core.StandardContext filterStart
严重: Exception starting filter struts2
Unable to load configuration. - bean - jar:file:/C:/tomcat6/webapps/blog-ssh/WEB-INF/lib/struts2-spring-plugin-2.1.6.jar!/struts-plugin.xml:29:132
 at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:58)
 at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:360)
 at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:403)
 at org.apache.struts2.dispatcher.FilterDispatcher.init(FilterDispatcher.java:190)
 at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:295)
 at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:422)
 at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:115)
 at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3838)
 at org.apache.catalina.core.StandardContext.start(StandardContext.java:4488)
 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:526)
 at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1041)
 at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:964)
 at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:502)
 at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1277)
 at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:321)
 at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
 at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
 at org.apache.catalina.core.StandardHost.start(StandardHost.java:722)
 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:593)
 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:289)
 at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
Caused by: Unable to load bean: type:com.opensymphony.xwork2.ObjectFactory class:org.apache.struts2.spring.StrutsSpringObjectFactory - bean - jar:file:/C:/tomcat6/webapps/blog-ssh/WEB-INF/lib/struts2-spring-plugin-2.1.6.jar!/struts-plugin.xml:29:132
 at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:222)
 at org.apache.struts2.config.StrutsXmlConfigurationProvider.register(StrutsXmlConfigurationProvider.java:101)
 at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:165)
 at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:55)
 ... 30 more
Caused by: Bean type class com.opensymphony.xwork2.ObjectFactory with the name spring has already been loaded by bean - jar:file:/C:/tomcat6/lib/struts2-spring-plugin-2.1.6.jar!/struts-plugin.xml:29:132 - bean - jar:file:/C:/tomcat6/webapps/blog-ssh/WEB-INF/lib/struts2-spring-plugin-2.1.6.jar!/struts-plugin.xml:29:132
 at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:206)
 ... 33 more

Answer 1

重新配置tomcat？？我做其他程序都没错，为什么要我重新配置tomcat？

Answer 2

好的！这是struts.xml文件<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd"><struts> <constant name="struts.objectFactory" value="spring"></constant> <package name="Admin" namespace="/admin" extends="struts-default">
<action name="editBlog" class="blogAction" method="edit">
<result name="success">/admin/blogManage.jsp</result>
</action>
<action name="updateBlog" class="blogAction" method="update">
<result name="success" type="redirect">/admin/editBlog</result>
</action>
</package>
</struts>

Answer 3

<constant name="struts.objectFactory" value="spring"></constant>
这句是多余的......struts2默认在初始化的时候已经加载spring了...你写这句告诉了struts2再次加载一次...所以抱异常了...

Answer 4

我把<constant name="struts.objectFactory" value="spring"></constant>
这句话去掉了，删除原来的部署，重新部署，重启tomcat，但还是报原来的错误啊

Answer 5

commons-logging-api-1.1.jarcommons-fileupload-1.2.1.jarcommons-logging.jarstruts2-spring-plugin-2.1.6.jarfreeer-2.3.13.jar看看差那个导进去看看...

Answer 6

struts-plugin.xml:29把这段代码贴上来给我看下...

Answer 7

好的，感谢！！<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">
    
<struts>
    <bean type="com.opensymphony.xwork2.ObjectFactory" name="spring" class="org.apache.struts2.spring.StrutsSpringObjectFactory" />      //这是第29行    
    <!--  Make the Spring object factory the automatic default -->
    <constant name="struts.objectFactory" value="spring" />    <package name="spring-default">
        <interceptors>
            <interceptor name="autowiring" class="com.opensymphony.xwork2.spring.interceptor.ActionAutowiringInterceptor"/>
            <interceptor name="sessionAutowiring" class="org.apache.struts2.spring.interceptor.SessionContextAutowiringInterceptor"/>
        </interceptors>
    </package>    
</struts>

Answer 8

struts2-spring-plugin-2.1.6.jar
这个包是不是有问题？以前用的有问题吗？

Answer 9

谢谢你啊！
没问题啊，今天下午的时候我用的是struts2-spring-plugin-2.1.8.1.jar ,但是我百度，Google一下，说可能是版本问题，后来我又换的是struts2-spring-plugin-2.1.6。jar，以前用也没问题啊

Answer 10

好的，这是web.xml文件<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext.xml</param-value>
</context-param> <listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener> <filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
</filter> <filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping> <welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>

Answer 11

下午用这个struts2-spring-plugin-2.1.8.1.jar 的时候没报错吗？就是用struts2-spring-plugin-2.1.6.jar报错的吗？

Answer 12

放在了src文件夹下，我用的是myEclipse8.0

Answer 13

不，都报错了，都是这个错，用2.1.8.1.jar就说它错，用2.1.6.jar又说它错 

Answer 14

你的TOMCAT的路径有空格吗？如果有的话也会出现无法加载的异常，安装的目录不能带空格...

Answer 15

没有空格啊，安装的目录就是C:\tomcat6

Answer 16

<filter>
<filter-name>struts2</filter-name>
<filter-class>
org.apache.struts2.dispatcher.FilterDispatcher
</filter-class>
<init-param>
<param-name>config</param-name>
<param-value>
struts-default.xml,struts-plugin.xml,struts.xml
</param-value>
</init-param>
</filter>
你这样加下看看行不...

Answer 17

是不是，有什么jar文件冲突啊？？

Answer 18

我也不知道了....因为我没碰到过你这种原因....我只能从struts2的结构上帮分析的，可能别人碰到过吧....我实在没办法了....不好意思啊...

Answer 19

你这个问题是已经加载了一次了....MAP中已经有了这个JAR下的CLASS，但后面又加载了一次，无法覆盖前面的CLASS，你只有等遇到过这样问题的人来帮你解决了...

Answer 20

添加:
commons-fileupload-1.2.1.jar  commons-io-1.3.2.jar　　猫猫在工程里确实没有发现这两个包，因为struts2的默认拦截器栈有文件上传的拦截器,于是这两个包就成了必须包.于是猫猫加入了:commons-io-1.3.2.jar、commons-fileupload-1.2.1.jar.异常没有解决.其实仔细观察这个异常信息,就已经指明了异常出现的问题:Caused by: Bean type class com.opensymphony.xwork2.ObjectFactory with the name xwork has already been loaded by bean - jar:file:/D:/Program%20Files/Apache%20Software%20Foundation/Tomcat%206.0/webapps/BookStore/WEB-INF/lib/struts2-core-2.0.12.jar!/struts-default.xml:30:72 - bean - jar:file:/D:/Program%20Files/Apache%20Software%20Foundation/Tomcat%206.0/webapps/BookStore/WEB-INF/lib/struts2-core-2.1.6.jar!/struts-default.xml:29:72
 at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register　　根据这句，猫猫发现，之前替换掉的struts和xwork的包没有删掉,还留在lib目录下.删除后,工程部署,运行成功!

Answer 21

天啊，我就做了一个ssh的小小的例子，怎么就这么折磨我啊！来回报这个错误，怎么改都是这个错误！

Answer 22

感谢大家帮助！我解决了，情况是这样的我把struts2-spring-plugin-2.1.8.1.jar文件放在了tomcat的lib文件夹下，可能是跟其他jar文件冲突，我又把struts2-spring-plugin-2.1.8.1.jar文件放在了其他文件夹下，这回部署，启动tomcat，哈哈~~成功！！但是又遇到了这个问题，大家帮我看看！！谢谢了！！
就是我能查找记录，但是不能更新记录！说是缓存问题！以下是抛出的违例：java.lang.reflect.InvocationTargetException
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
java.lang.reflect.Method.invoke(Method.java:597)
com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:441)
com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:280)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:243)
com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:165)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:252)
org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:122)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:179)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:75)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:94)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:235)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:89)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:130)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:267)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:126)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:138)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:165)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:179)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:176)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52)
org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:488)
org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:395)
在MyEclipse终端上显示的是：38235 [http-8088-1] WARN org.hibernate.cache.ReadWriteCache - An item was expired by the cache while it was locked (increase your cache timeout): model.Blog#1  //Blog是我的持久类

Answer 23

还有Blog对象的HIBERNATE.cft.xml配置也贴下..

Answer 24

这是blog类import static javax.persistence.GenerationType.IDENTITY;import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;import org.hibernate.annotations.Cache;
import org.hibernate.annotations.CacheConcurrencyStrategy;@Entity
@Table(name = "blog")
@Cache(usage = CacheConcurrencyStrategy.READ_WRITE)
public class Blog implements java.io.Serializable { private static final long serialVersionUID = -413395414698213950L;
private Integer id;
private String name;
private String description;        public Blog() {
} @Id
@GeneratedValue(strategy = IDENTITY)
@Column(name = "id", unique = true, nullable = false)
public Integer getId() {
return this.id;
} public void setId(Integer id) {
this.id = id;
} @Column(name = "name", length = 40)
public String getName() {
return this.name;
} public void setName(String name) {
this.name = name;
} @Column(name = "description", length = 200)
public String getDescription() {
return this.description;
} public void setDescription(String description) {
this.description = description;
}

Answer 25

@Cache(usage = CacheConcurrencyStrategy.READ_WRITE)
这句应出现问题，你应该告诉CACHE保存的时间是多少....不然容易超时....

Answer 26

@CACHE有很多个参数的，你具体自己试下....

Answer 27

但是我用的是ehcache设置的，在ehcache.xml中配置的一些设置

Answer 28

这是ehcache.xml代码<?xml version="1.0" encoding="UTF-8"?>
<ehcache>
<diskStore path="java.io.tmpdir" />
<defaultCache maxElementsInMemory="1000" eternal="false"
overflowToDisk="false" timeToIdleSeconds="120" timeToLiveSeconds="120" /> <cache name="model.Blog" maxElementsInMemory="5" eternal="false"
overflowToDisk="true" timeToIdleSeconds="120" timeToLiveSeconds="120" />
</ehcache>

Answer 29

每次运行都说
38235 [http-8088-1] WARN org.hibernate.cache.ReadWriteCache - An item was expired by the cache while it was locked (increase your cache timeout)
在哪看缓存的超时时间啊？（郁闷了）