SSH问题集（一） spring和struts整合配置文件问题



SSH问题集（一） spring和struts整合配置文件问题

1、spring默认配置文件applicationContext.xml的路径设置

<context-param>

<param-name>contextConfigLocation</param-name>

<!--如果文件在classes下，配置为classpath:-->

                <param-value>classpath:applicationContext.xml</param-value>

                  <!--如果指定目录WEB-INF或resources目录下-->

<param-value>/WEB-INF/applicationContext.xml</param-value>

</context-param>

<listener>

<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

</listener>

2、struts.xml文件，默认加载在classes目录下

     如果指定struts.xml的路径，参见如下配置

<filter>

<filter-name>struts2</filter-name>

<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>

<init-param>

<param-name>config</param-name>

<!--<param-value>struts-default.xml,struts-plugin.xml,../../WEB-INF/struts.xml</param-value>  -->

</init-param>

</filter>

由于此配置文件导致的各类报错：

问题 A：

严重: Exception starting filter struts2

com.opensymphony.xwork2.inject.DependencyException: com.opensymphony.xwork2.inject.ContainerImpl$MissingDependencyException: No mapping found for dependency [type=com.opensymphony.xwork2.ObjectFactory, name='default'] in public void com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.setObjectFactory(com.opensymphony.xwork2.ObjectFactory).

at com.opensymphony.xwork2.inject.ContainerImpl.addInjectorsForMembers(ContainerImpl.java:144)

at com.opensymphony.xwork2.inject.ContainerImpl.addInjectorsForMethods(ContainerImpl.java:113)

at com.opensymphony.xwork2.inject.ContainerImpl.addInjectors(ContainerImpl.java:90)

at com.opensymphony.xwork2.inject.ContainerImpl.addInjectors(ContainerImpl.java:86)

at com.opensymphony.xwork2.inject.ContainerImpl$1.create(ContainerImpl.java:71)

at com.opensymphony.xwork2.inject.ContainerImpl$1.create(ContainerImpl.java:69)

at com.opensymphony.xwork2.inject.util.ReferenceCache$CallableCreate.call(ReferenceCache.java:150)

at java.util.concurrent.FutureTask.run(FutureTask.java:262)

at com.opensymphony.xwork2.inject.util.ReferenceCache.internalCreate(ReferenceCache.java:76)

at com.opensymphony.xwork2.inject.util.ReferenceCache.get(ReferenceCache.java:116)

at com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:483)

at com.opensymphony.xwork2.inject.ContainerImpl$6.call(ContainerImpl.java:523)

at com.opensymphony.xwork2.inject.ContainerImpl$6.call(ContainerImpl.java:522)

at com.opensymphony.xwork2.inject.ContainerImpl.callInContext(ContainerImpl.java:574)

at com.opensymphony.xwork2.inject.ContainerImpl.inject(ContainerImpl.java:521)

at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:188)

at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:55)

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.ng.InitOperations.initDispatcher(InitOperations.java:69)

at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:48)

at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:281)

at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:262)

at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:107)

at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4775)

at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5452)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)

at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)

at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)

at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:633)

at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:976)

at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1653)

at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)

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:745)

Caused by: com.opensymphony.xwork2.inject.ContainerImpl$MissingDependencyException: No mapping found for dependency [type=com.opensymphony.xwork2.ObjectFactory, name='default'] in public void com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.setObjectFactory(com.opensymphony.xwork2.ObjectFactory).

at com.opensymphony.xwork2.inject.ContainerImpl.createParameterInjector(ContainerImpl.java:235)

at com.opensymphony.xwork2.inject.ContainerImpl.getParametersInjectors(ContainerImpl.java:225)

at com.opensymphony.xwork2.inject.ContainerImpl$MethodInjector.<init>(ContainerImpl.java:287)

at com.opensymphony.xwork2.inject.ContainerImpl$3.create(ContainerImpl.java:117)

at com.opensymphony.xwork2.inject.ContainerImpl$3.create(ContainerImpl.java:115)

at com.opensymphony.xwork2.inject.ContainerImpl.addInjectorsForMembers(ContainerImpl.java:141)

... 36 more

原因：

配置成了<param-value>/WEB-INF/struts.xml</param-value>  :

解决方法：

加上struts-default.xml,struts-plugin.xml，虽然没这2个文件。

<param-value>struts-default.xml,struts-plugin.xml,/WEB-INF/struts.xml</param-value> 

问题 B：

严重: Exception starting filter struts2

Unable to load configuration. - [unknown location]

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.ng.InitOperations.initDispatcher(InitOperations.java:69)

at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:48)

at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:281)

at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:262)

at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:107)

at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4775)

at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5452)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)

at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)

at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)

at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:633)

at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:976)

at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1653)

at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)

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:745)

Caused by: Cannot locate the chosen ObjectFactory implementation: spring - [unknown location]

at org.apache.struts2.config.BeanSelectionProvider.alias(BeanSelectionProvider.java:287)

at org.apache.struts2.config.BeanSelectionProvider.alias(BeanSelectionProvider.java:258)

at org.apache.struts2.config.BeanSelectionProvider.register(BeanSelectionProvider.java:203)

at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:165)

at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:55)

... 20 more

原因：

很多可能造成这个报错

解决方法：

1）将WEB-INF/struts.xml修改为../../WEB-INF/struts.xml

<param-value>../../WEB-INF/struts.xml</param-value> 

还是报加载不了配置文件Unable to load configuration. - [unknown location]

2）如果配置为：<param-value>struts.xml</param-value>  ，同时将struts.xml放到classes目录下，感觉上应该去加载classes下的，但仍然报错

3）加上struts-default.xml,struts-plugin.xml

即：<param-value>struts-default.xml,struts-plugin.xml,struts.xml</param-value> 

问题解决。

综上，配置都要包括 struts-default.xml,struts-plugin.xml，即便没有这2个文件 。如果struts.xml在classes下，就不需要<init-param> </init-param>段，加了反而容易出错。

上述验证采用的各组件和版本如下：

antlr-2.7.6.jar

aopalliance-1.0.jar

asm-1.5.3.jar

asm-attrs-1.5.3.jar

c3p0-0.9.2.jar

cglib-2.1_3.jar

commons-collections-3.1.jar

commons-fileupload-1.2.1.jar

commons-io-1.3.2.jar

commons-logging-1.1.1.jar

dom4j-1.6.1.jar

ehcache-1.2.3.jar

freemarker-2.3.15.jar

hibernate-3.2.1.ga.jar

hibernate-annotations-3.3.0.ga.jar

hibernate-commons-annotations-3.3.0.ga.jar

hibernate-core-3.3.0.GA.jar

jta-1.1.jar

junit-3.8.1.jar

log4j-1.2-api-2.0.jar

log4j-api-2.0.jar

log4j-core-2.0.jar

mchange-commons-java-0.2.3.3.jar

mysql-connector-java-5.1.6.jar

ognl-2.6.11.jar

persistence-api-1.0.jar

slf4j-api.jar

slf4j-log4j12.jar

spring-aop-3.0.1.RELEASE.jar

spring-asm-3.0.1.RELEASE.jar

spring-beans-3.0.1.RELEASE.jar

spring-context-3.0.1.RELEASE.jar

spring-core-3.0.1.RELEASE.jar

spring-expression-3.0.1.RELEASE.jar

spring-jdbc-3.0.1.RELEASE.jar

spring-orm-3.0.1.RELEASE.jar

spring-test-2.5.6.jar

spring-tx-3.0.1.RELEASE.jar

spring-web-3.0.1.RELEASE.jar

struts2-core-2.1.6.jar

struts2-spring-plugin-2.1.6.jar

xml-apis-1.0.b2.jar

xwork-2.1.2.jar