SSH框架組合問題集教學(xué)內(nèi)容

1、Good is good, but better carries it.精益求精，善益求善。SSH框架組合問題集-Servleteactionisnotavailable說明：這種問題是SSH框架結(jié)合使用最長(zhǎng)出現(xiàn)的問題。問題現(xiàn)象：2010-9-8進(jìn)行SSH組合時(shí)出現(xiàn)Servleteactionisnotavailable.現(xiàn)象開發(fā)環(huán)境：項(xiàng)目名(spring3)struts1.0spring2.0hibernate3.1分析：項(xiàng)目spring3三大框架部署完后，沒有添加log4j。導(dǎo)致項(xiàng)目運(yùn)行時(shí)只提示servletActionisnotavailable!第一步：把log4j.jar包導(dǎo)入項(xiàng)目s

2、pring第二步：設(shè)置perties文件log4j.rootLogger=info,appender1,appender2log4j.appender.appender1=org.apache.log4j.FileAppenderlog4j.appender.appender2=org.apache.log4j.ConsoleAppenderlog4j.appender.appender1.File=c:log4j.loglog4j.appender.appender1.DatePattern=.yyyy-MM-dd.loglog4j.appender.appender1.layout=org

3、.apache.log4j.PatternLayoutlog4j.appender.appender2.layout=org.apache.log4j.PatternLayoutlog4j.appender.appender1.layout.ConversionPattern=%-5p%dyyyy-MM-ddHH:mm:ssMethod:%l%n%m%nlog4j.appender.appender2.layout.ConversionPattern=%r%t%p-%c-%l-%m%n第三步：重新啟動(dòng)服務(wù)后，就報(bào)一下錯(cuò)誤：Log4j.log日志：INFO2010-09-0905:21:38Me

4、thod:org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:303)LoadingXMLbeandefinitionsfromServletContextresource/WEB-INF/classes/applicationContext.xmlINFO2010-09-0905:21:39Method:org.springframework.context.support.AbstractApplicationContex

5、t.obtainFreshBeanFactory(AbstractApplicationContext.java:393)Beanfactoryforapplicationcontextorg.springframework.web.context.support.XmlWebApplicationContext176343e:org.springframework.beans.factory.support.DefaultListableBeanFactory1d317abINFO2010-09-0905:21:40Method:org.springframework.beans.facto

6、ry.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:276)Pre-instantiatingsingletonsinorg.springframework.beans.factory.support.DefaultListableBeanFactory1d317ab:definingbeansds,sessionfactory,TblFwxxDAO,listdao,listbiz,/list;rootoffactoryhierarchyINFO2010-0

7、9-0905:21:40Method:org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingletons(DefaultSingletonBeanRegistry.java:282)Destroyingsingletonsinorg.springframework.beans.factory.support.DefaultListableBeanFactory1d317ab:definingbeansds,sessionfactory,TblFwxxDAO,listdao,listbi

8、z,/list;rootoffactoryhierarchyERROR2010-09-0905:21:45Method:org.springframework.web.struts.ContextLoaderPlugIn.init(ContextLoaderPlugIn.java:229)Contextinitializationfailedorg.springframework.beans.factory.BeanCreationException:ErrorcreatingbeanwithnamedsdefinedinServletContextresource/WEB-INF/class

9、es/applicationContext.xml:Instantiationofbeanfailed;nestedexceptionisjava.lang.NoClassDefFoundError:org/apache/commons/pool/impl/GenericObjectPoolCausedby:java.lang.NoClassDefFoundError:org/apache/commons/pool/impl/GenericObjectPoolatjava.lang.Class.getDeclaredConstructors0(NativeMethod)atjava.lang.

10、Class.privateGetDeclaredConstructors(UnknownSource)atjava.lang.Class.getConstructor0(UnknownSource)atjava.lang.Class.getDeclaredConstructor(UnknownSource)atorg.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:54).第四步：跟據(jù)日志提示：java.lang.NoCl

11、assDefFoundError:org/apache/commons/pool/impl/GenericObjectPool由于未找到org/apache/commons/pool/impl/GenericObjectPool/impl/GenericObjectPool這個(gè)類導(dǎo)致Contextinitializationfailed第五步：看到第四步的分析后,檢查了項(xiàng)目中的jar包，發(fā)現(xiàn)項(xiàng)目中加載框架時(shí)沒有導(dǎo)入commons-pool.jar包解決辦法：從網(wǎng)上下載了commons-pool.jar包后。從新運(yùn)行就運(yùn)行正常了。項(xiàng)目spring3的代碼如下：項(xiàng)目結(jié)構(gòu)如下：struts-config.xml文件內(nèi)容如下說明：紅色字體是把struts和spring集成在一起