javax.naming.NamingException: No set method found for property: descrīption

server.xml

 <Resource name="UserDatabase" auth="Container"
              type="org.apache.catalina.UserDatabase"
              description="User database that can be updated and saved"
              factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
              pathname="conf/tomcat-users.xml" />

	<Resource auth="Container" 
    descrīption="DB Connection" 
    driverClass="com.mysql.jdbc.Driver" 
    maxPoolSize="10" 
    minPoolSize="2" 
    acquireIncrement="2" 
    name="jdbc/connPool"
    user="root" 
    password="123" 
    factory="org.apache.naming.factory.BeanFactory" 
    type="com.mchange.v2.c3p0.ComboPooledDataSource" 
    jdbcUrl="jdbc:mysql://localhost:3306/kds?autoReconnect=true" /> 
  </GlobalNamingResources>

context.xml

<ResourceLink name="jdbc/connPool" global="jdbc/connPool" type="javax.sql.DataSource"/>

/webapps/**/WEB-INF/web.xml

<resource-ref>
    <descrīption>DB Connection</descrīption>
    <res-ref-name>jdbc/connPool</res-ref-name>
    <res-type>javax.sql.DataSource</res-type>
    <res-auth>Container</res-auth>
    </resource-ref>

commons.xml

<!-- 定义数据源Bean，使用C3P0数据源实现 com.mchange.v2.c3p0.ComboPooledDataSource-->
	<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
		<property name="driverClass" value="com.mysql.jdbc.Driver" />
		<property name="jdbcUrl" value="jdbc:mysql://localhost:3306/kds" />
		<property name="user" value="root" />
		<property name="password" value="123" />
		<property name="initialPoolSize" value="10" />
		<property name="minPoolSize" value="5" />
		<property name="maxPoolSize" value="30" />
		<property name="acquireIncrement" value="5" />
		<property name="maxStatements" value="0" />
	</bean>

	<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
		<property name="mappingResources">
			<list>
				<value>com/kds/pojo/xml/User.hbm.xml</value>
				<value>com/kds/pojo/xml/Authority.hbm.xml</value>
				<value>com/kds/pojo/xml/Contract.hbm.xml</value>
				<value>com/kds/pojo/xml/Contracttype.hbm.xml</value>
				<value>com/kds/pojo/xml/Landmark.hbm.xml</value>
				<value>com/kds/pojo/xml/Orders.hbm.xml</value>
				<value>com/kds/pojo/xml/Product.hbm.xml</value>
				<value>com/kds/pojo/xml/Project.hbm.xml</value>
				<value> com/kds/pojo/xml/Projectuserrelation.hbm.xml</value>
				<value>com/kds/pojo/xml/Rightrolerelation.hbm.xml</value>
				<value>com/kds/pojo/xml/Role.hbm.xml</value>
				<value>com/kds/pojo/xml/Suit.hbm.xml</value>
				<value>com/kds/pojo/xml/Suitproductrelation.hbm.xml</value>
				<value>com/kds/pojo/xml/Suitproductrelationinorder.hbm.xml</value>
				<value>com/kds/pojo/xml/Task.hbm.xml</value>
				<value>com/kds/pojo/xml/Taskuserrelation.hbm.xml</value>
			</list>
		</property>
		<property name="hibernateProperties">
			<props>
				<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
				<prop key="hibernate.hbm2ddl.auto">update</prop>
				<prop key="hibernate.generate_statistics">true</prop>
				<prop key="hibernate.connection.release_mode">auto</prop>
				<prop key="hibernate.autoReconnect">true</prop>
				<prop key="hibernate.show_sql">true</prop><!-- 显示sql -->
				<prop key="hibernate.format_sql">true</prop>
			</props>
		</property>
		<property name="dataSource" ref="dataSource" />
	</bean>

在网上找到的帖子都是关于tomcat7.0bug的补丁解决办法，但我的问题应该不是bug的问题。
现在的现象是，我网站正常启动了，但是客户端一提交表单到服务器查询就出现javax.servlet.ServletException: java.lang.NullPointerException的空指针错误，我觉得像是C3P0的配置没有连接上数据库而是对象为空造成的，但是为什么连不上我搞了2天都没找到原因，有没有遇到过同样问题的同志给点提示。

3 个解决方案

#1

原来我这段配置应该写在项目的\META-INF\context.xml中

 <Resource auth="Container" 
    descrīption="DB Connection" 
    driverClass="com.mysql.jdbc.Driver" 
    maxPoolSize="10" 
    minPoolSize="2" 
    acquireIncrement="2" 
    name="jdbc/connPool"
    user="root" 
    password="123" 
    factory="org.apache.naming.factory.BeanFactory" 
    type="com.mchange.v2.c3p0.ComboPooledDataSource" 
    jdbcUrl="jdbc:mysql://localhost:3306/kds?autoReconnect=true" /> 

测试页面页显示出了数据库的数据，mysqlTest.jsp

<%@page language="java" import="java.util.*,java.sql.*,javax.naming.*,javax.sql.*" pageEncoding="GB2312"%>
<%@page import="com.mchange.v2.c3p0.*"%>
<%@page import="java.sql.Connection"%>
<%
    Connection conn=null;
     try
	{
      InitialContext ctx = new InitialContext(); 
      DataSource ds = (DataSource) ctx.lookup("java:comp/env/jdbc/connPool"); 
      conn=ds.getConnection();
	}
	catch(NamingException ex)
	{
	 ex.printStackTrace();
	}
 
    String sql="select * from user";
 PreparedStatement ps=conn.prepareStatement(sql);
 ResultSet rs=ps.executeQuery();
//获得数据结果集合 
ResultSetMetaData rmeta = rs.getMetaData(); 
//确定数据集的列数，亦字段数 
int numColumns=rmeta.getColumnCount(); 
// 输出每一个数据值 
out.print("id"); 
out.print("|"); 
out.print("num"); 
out.print("<br>"); 
while(rs.next()) { 
out.print(rs.getString(2)+" "); 
out.print("|"); 
out.print(rs.getString(3)); 
out.print("<br>"); 
} 
out.print("<br>"); 
out.print("Get it!"); 
rs.close(); 
statement.close(); 
connection.close();
%>

但是网站上的提交用户名和密码到服务器还是返回NullPointerException

<form action="contractManager_login.action" method="post" id="loginForm" name="loginForm">
  <table width="100%" border="0">
  <tr>
    <td align="right">Email：</td>
    <td align="left"><input name="email" id="loginName" type="text" value="" size="20" /></td>
  </tr>
  <tr>
    <td align="right">密&nbsp;&nbsp;&nbsp;码：</td>
    <td align="left"><input name="password" type="password" id="loginPwd" value="" size="20" /></td>
  </tr>
  <tr>
    <td align="right">验证码：</td>
    <td align="left"><input name="num" type="text" value="" id="num" size="10"  onkeydown="javascript:keyDownLogin()"/>  
    		<img border=0 src="image.jsp">
    </td>
  </tr>
  <tr>
    <td colspan="2" align="center"><a href="#" class="p-dengl" onclick="checkLogin()">登录</a>
    </tr>
</table>
</form>

java.lang.NullPointerException
com.kds.action.ContractManagerAction.login(ContractManagerAction.java:144)

ContractManagerAction.java

/* 用户登录 */
	public String login() {
		String email = this.getRequest().getParameter("email");
		String password = this.getRequest().getParameter("password");
		MD5 md5 = new MD5();
		if (email == null || password == null) 
			return ERROR;
		User user = cmService.login(email, md5.getMD5ofStr(password));//Line 144
		ActionContext.getContext().getSession().put("user", user);
		if (user == null)
			return ERROR;
		this.getSession().setAttribute("user", user);
		return "login";
	}

	public User login(String email, String password) {
		List<User> list = getHibernateTemplate().find(" from User u where u.email=? and u.password=?", new String[]{email, password});
		User user = null;
		if(list == null)
			System.out.println("List is Null");
		if (list != null && !list.isEmpty())
			user = list.get(0);
		return user;
	}

数据库console没有“list is null”的字样打印。

#2

我的cmService没有初始化……唉

#3

ApplicationContext-Commons.xml

<?xml version="1.0" encoding="utf-8"?>

<!-- beans是Spring配置文件的根元素，并且指定了Schema信息 -->

<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:aop="http://www.springframework.org/schema/aop"
	xmlns:tx="http://www.springframework.org/schema/tx"
	xsi:schemaLocation="http://www.springframework.org/schema/beans 
                     http://www.springframework.org/schema/beans/spring-beans.xsd 
                     http://www.springframework.org/schema/tx 
                     http://www.springframework.org/schema/tx/spring-tx.xsd 
                     http://www.springframework.org/schema/aop 
                     http://www.springframework.org/schema/aop/spring-aop.xsd">

	<!-- 定义数据源Bean，使用C3P0数据源实现 com.mchange.v2.c3p0.ComboPooledDataSource-->
	<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
		<property name="driverClass" value="com.mysql.jdbc.Driver" />
		<property name="jdbcUrl" value="jdbc:mysql://localhost:3306/kds" />
		<property name="user" value="root" />
		<property name="password" value="123" />
		<property name="initialPoolSize" value="10" />
		<property name="minPoolSize" value="5" />
		<property name="maxPoolSize" value="30" />
		<property name="acquireIncrement" value="5" />
		<property name="maxStatements" value="0" />
	</bean>

	<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
		<property name="mappingResources">
			<list>
				<value>com/kds/pojo/xml/User.hbm.xml</value>
				<value>com/kds/pojo/xml/Authority.hbm.xml</value>
				<value>com/kds/pojo/xml/Contract.hbm.xml</value>
				<value>com/kds/pojo/xml/Contracttype.hbm.xml</value>
				<value>com/kds/pojo/xml/Landmark.hbm.xml</value>
				<value>com/kds/pojo/xml/Orders.hbm.xml</value>
				<value>com/kds/pojo/xml/Product.hbm.xml</value>
				<value>com/kds/pojo/xml/Project.hbm.xml</value>
				<value> com/kds/pojo/xml/Projectuserrelation.hbm.xml</value>
				<value>com/kds/pojo/xml/Rightrolerelation.hbm.xml</value>
				<value>com/kds/pojo/xml/Role.hbm.xml</value>
				<value>com/kds/pojo/xml/Suit.hbm.xml</value>
				<value>com/kds/pojo/xml/Suitproductrelation.hbm.xml</value>
				<value>com/kds/pojo/xml/Suitproductrelationinorder.hbm.xml</value>
				<value>com/kds/pojo/xml/Task.hbm.xml</value>
				<value>com/kds/pojo/xml/Taskuserrelation.hbm.xml</value>
			</list>
		</property>
		<property name="hibernateProperties">
			<props>
				<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
				<prop key="hibernate.hbm2ddl.auto">update</prop>
				<prop key="hibernate.generate_statistics">true</prop>
				<prop key="hibernate.connection.release_mode">auto</prop>
				<prop key="hibernate.autoReconnect">true</prop>
				<prop key="hibernate.show_sql">true</prop><!-- 显示sql -->
				<prop key="hibernate.format_sql">true</prop><!-- 将sql脚本进行进行格式化后再输出 -->
			</props>
		</property>
		<property name="dataSource" ref="dataSource" />
	</bean>

	<!--设置事务管理  -->
	<bean id="transactionManager"
		class="org.springframework.orm.hibernate3.HibernateTransactionManager">
		<property name="sessionFactory">
			<ref local="sessionFactory" />
		</property>
	</bean>

	<!-- 配置事务的传播特性 ，指定事务管理器-->
	<tx:advice id="txAdvice" transaction-manager="transactionManager">
		<!-- 配置详细的事务语义 -->
		<tx:attributes>
			<tx:method name="create*" propagation="REQUIRED" />
			<tx:method name="delete*" propagation="REQUIRED" />
			<tx:method name="*" read-only="true" />
		</tx:attributes>
	</tx:advice>
</beans>

ApplicationContext-Actions.xml

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:aop="http://www.springframework.org/schema/aop"
	xmlns:tx="http://www.springframework.org/schema/tx"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
           http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
           http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">

	<bean id="projectManagerAction" class="com.kds.action.ProjectManagerAction" scope="prototype">
		<property name="pmService" ref="ProjectManagerService" />
	</bean>

	<bean id="contractManagerAction" class="com.kds.action.ContractManagerAction" scope="prototype">
		<property name="pmService" ref="ProjectManagerService" />
		<property name="cmService" ref="ContractManagerService" />
	</bean>

	<bean id="roleAndRightAction" class="com.kds.action.RoleAndRightAction" scope="prototype">
		<property name="pmService" ref="ProjectManagerService" />
		<property name="cmService" ref="ContractManagerService" />
		<property name="pcService" ref="ProjectCustomerService" />
	</bean>

</beans>

ApplicationContext-Service.xml

<?xml version="1.0" encoding="GBK"?>


<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:aop="http://www.springframework.org/schema/aop"
	xmlns:tx="http://www.springframework.org/schema/tx"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
           http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
           http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">

	<!-- 定义业务逻辑组件 -->
	<bean id="projectTemplate" abstract="true" lazy-init="true">
		<property name="projectDao" ref="projectDao" />
		<property name="landmarkDao" ref="landmarkDao" />
		<property name="taskDao" ref="taskDao" />
		<property name="userDao" ref="userDao" />
		<property name="roleDao" ref="roleDao" />
		<property name="taskuserrelationDao" ref="taskuserrelationDao" />
		<property name="projectuserrelationDao" ref="projectuserrelationDao" />
	</bean>

	<bean id="projectManagerService" class="com.kds.service.impl.ProjectManagerService" parent="projectTemplate" />
	<bean id="projectCustomerService" class="com.kds.service.impl.ProjectCustomerService" parent="projectTemplate"/>


	<bean id="contractTemplate" abstract="true" lazy-init="true">
		<property name="userDao" ref="userDao"/>
		<property name="contractDao" ref="contractDao"/>
		<property name="contracttypeDao" ref="contracttypeDao" />
		<property name="productDao" ref="productDao" />
	</bean>

	<bean id="contractManagerService" class="com.kds.service.impl.ContractManagerService" parent="contractTemplate" />

</beans>

ApplicationContext-Daos.xml

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:aop="http://www.springframework.org/schema/aop"
	xmlns:tx="http://www.springframework.org/schema/tx"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
           http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
           http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">

	<!-- 配置DAO组件模板 -->
	<bean id="daoTemplate" abstract="true" lazy-init="true">
		<property name="sessionFactory" ref="sessionFactory" />
	</bean>

	<bean id="projectDao" class="com.kds.dao.impl.ProjectDAO" parent="daoTemplate"/>
	<bean id="landmarkDao" class="com.kds.dao.impl.LandmarkDAO" parent="daoTemplate"/>
	<bean id="taskDao" class="com.kds.dao.impl.TaskDAO" parent="daoTemplate"/>
	<bean id="userDao" class="com.kds.dao.impl.UserDAO" parent="daoTemplate"/>	
	<bean id="roleDao" class="com.kds.dao.impl.RoleDAO" parent="daoTemplate"/>
	<bean id="taskuserrelationDao" class="com.kds.dao.impl.TaskuserrelationDAO" parent="daoTemplate"/>
	<bean id="projectuserrelationDao" class="com.kds.dao.impl.ProjectuserrelationDAO" parent="daoTemplate"/>

	<bean id="contractDao" class="com.kds.dao.impl.ContractDAO" parent="daoTemplate" />
	<bean id="contracttypeDao" class="com.kds.dao.impl.ContracttypeDAO" parent="daoTemplate" />
	<bean id="productDao" class="com.kds.dao.impl.ProductDAO" parent="daoTemplate"/>

</beans>

ContractManagerService

public User login(String email, String password) {
		return userDao.login(email, password);
	}

我cmService明明注入了，应该不是空值啊？