2006-03-23 17:25:06 StandardContext[/login]Marking servlet action as unavailable
2006-03-23 17:25:06 StandardContext[/login]Servlet /login threw load() exception
javax.servlet.UnavailableException
 at org.apache.struts.action.ActionServlet.initModulePlugIns(ActionServlet.java:880)
 at org.apache.struts.action.ActionServlet.init(ActionServlet.java:336)
 at javax.servlet.GenericServlet.init(GenericServlet.java:256)
 at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1044)
 at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:887)
 at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:3959)
 at org.apache.catalina.core.StandardContext.start(StandardContext.java:4284)
 at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:866)
 at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:850)
 at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:638)
 at org.apache.catalina.core.StandardHostDeployer.install(StandardHostDeployer.java:320)
 at org.apache.catalina.core.StandardHost.install(StandardHost.java:875)
 at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:727)
 at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:477)
 at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1008)
 at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:394)
 at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:166)
 at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1134)
 at org.apache.catalina.core.StandardHost.start(StandardHost.java:832)
 at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1126)
 at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:521)
 at org.apache.catalina.core.StandardService.start(StandardService.java:519)
 at org.apache.catalina.core.StandardServer.start(StandardServer.java:2345)
 at org.apache.catalina.startup.Catalina.start(Catalina.java:594)
 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:324)
 at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:297)
 at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:398)

2006-03-23 17:27:02 StandardWrapperValve[action]: Servlet action is currently unavailable

以下是程序的目录结构：
src
  ---com
      ----test
          ---hibernate
                   ----AbstractUser.java
                   ----SessionFactory.java
                   ----User.hbm.xml
                   ----User.java
          ----struts
              --action
                   LoginAction.java
          -----UserDao.java
          -----UserDaoIMP.java
  -----WebRoot
          ----index.jsp

以下是applicationContext.xml的内容：
      <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
  <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
  <property name="driverClassName">
   <value>net.sourceforge.jtds.jdbc.Driver</value>
  </property>
  <property name="url">
   <value>jdbc:jtds:sqlserver://192.168.1.171:1433;DatabaseName=test;SelectMethod=cursor</value>
  </property>
  <property name="username">
   <value>sa</value>
  </property>
  <property name="password">
   <value></value>
  </property>
 </bean>
        <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
  <property name="dataSource">
   <ref local="dataSource" />
  </property>
  <property name="mappingResources">
   <list>
    <value>com/test/Hibernate/User.hbm.xml</value>
   </list>
  </property>
  <property name="hibernateProperties">
   <props>
    <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
    <prop key="hibernate.show_sql">true</prop>
   </props>
  </property>
 </bean>

<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
  <property name="sessionFactory">
   <ref local="sessionFactory" />
  </property>
 </bean>

 <bean id="userDAO" class="com.test.UserDAOImp">
  <property name="sessionFactory">
   <ref local="sessionFactory" />
  </property>
 </bean>

 <bean id="userDAOProxy" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
  <property name="transactionManager">
   <ref bean="transactionManager" />
  </property>
  <property name="target">
   <ref local="userDAO" />
  </property>
  <property name="transactionAttributes">
   <props>
    <prop key="insert*">PROPAGATION_REQUIRED</prop>
    <prop key="get*">PROPAGATION_REQUIRED,readOnly</prop>
    <prop key="is*">PROPAGATION_REQUIRED,readOnly</prop>
   </props>
  </property>
 </bean>
    <bean name="/login" class="com.test.struts.action.LoginAction" singleton="false">
  <property name="userDAO">
   <ref bean="userDAOProxy" />
  </property>
    </bean>
</beans>

UserDao.java的代码：
package com.test;

public interface UserDAO {

 public abstract boolean isValidUser(String username, String password);

}

UserDaoIMP.java的代码：

 package com.test;

import java.util.List;

import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

public class UserDAOImp extends HibernateDaoSupport implements UserDAO {

 private static String hql = "from User u where u.username=? and password=?";

 public boolean isValidUser(String username, String password) {

  String[] userlist=new String[2];
  userlist[0]=username;
  userlist[1]=password;
//  List userList = this.getHibernateTemplate().find(hql, (Object)username);
  List userList = this.getHibernateTemplate().find(hql,userlist);

  if (userList.size() > 0) {

   return true;

  }

  return false;

 }

}

LoginAction.java的代码:
package com.test.struts.action;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import com.test.UserDAO;
public class LoginAction extends Action {
 private UserDAO userDAO;

 public UserDAO getUserDAO() {
  return userDAO;
 }
public void setUserDAO(UserDAO userDAO) {
  this.userDAO = userDAO;
 }
 public ActionForward execute(
  ActionMapping mapping,
  ActionForm form,
  HttpServletRequest request,
  HttpServletResponse response) {
  if (userDAO.isValidUser("test","test")) {
   return mapping.getInputForward();
  } else {
   return mapping.getInputForward();

 }

 }
}

index.jsp的内容：

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()

+":"+request.getServerPort()+path+"/";
%>
<html>
  <head>
    </head>
   <body>
  <a href="<%=basePath%>login.do">login</a>
  </body>
</html>

以下是hibernate自动生成的User.hbm.xml，hibernate.cfg.xml文件我已经删除了。

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!--
    Mapping file autogenerated by MyEclipse - Hibernate Tools
-->
<hibernate-mapping>
    <class name="com.test.Hibernate.User" table="user" schema="dbo" catalog="test">
        <id name="id" type="integer">
            <column name="ID" />
            <generator class="sequence" />
        </id>
        <property name="username" type="string">
            <column name="USERNAME" length="50" />
        </property>
        <property name="password" type="string">
            <column name="PASSWORD" length="50" />
        </property>
    </class>
</hibernate-mapping>

struts-config.xml的代码如下:

<?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 />
  <global-exceptions />
  <global-forwards />
  <action-mappings >
    <action path="/login" type="org.springframework.web.struts.DelegatingActionProxy" />
 </action-mappings>
 <message-resources parameter="com.test.struts.ApplicationResources" />
  <plug-in className="org.springframework.web.struts.ContextLoaderPlugIn">
    <set-property property="contextConfigLocation" value="/WEB-INF/applicationContext.xml" />
  </plug-in>
</struts-config>

让人不解的是,当我点击login连接时，出现了以下错误信息：

type Status report

message Servlet action is not available

description The requested resource (Servlet action is not available) is not available.

--------------------------------------------------------------------------------
当我把applicationContext.xml改成以下后：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring

-beans.dtd">
<beans>
        <bean name="/login" class="com.test.struts.action.LoginAction" singleton="false">
 </bean>
</beans>
程序能够正常运行并执行到了我设在LoginAction.java中的段点，由此看来，应该是
applicationContext.xml的配置出了问题,
但不知道问题出在什么地方？是不是数据源配错了？？