请教ssm框架不能获取JDBC连接的问题Could not get JDBC Connection

Question

使用的是JDK1.7+tomcat7开发的ssm项目，地址栏输入login和register可以正确进入登录和注册页面不报错。在注册页面正确输入完用户名后由ajax提交到UserController进行验证：

//注册验证
@RequestMapping(value="/checkRegister",method=RequestMethod.POST)
    public void checkRegister(HttpServletRequest request,
	HttpServletResponse response,Users user,Model model){
		try {
		        System.out.println("已进入到注册检测模块！");
		        String cardId = request.getParameter("cardId");
		        cardId=usersService.getUserByCardId(cardId).getCardId();
		        PrintWriter out;
		        out = response.getWriter();
		        out.write(JSONArray.fromObject(cardId).toString());
		    } catch (IOException e) {
	                e.printStackTrace();
                    }
}

不过控制台并没有输出“已进入注册检测模块！”这句话，而是直接报以下错误！

### Error querying database.  Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver class '${driverClass}'

### The error may exist in dao/UsersMapper.xml

### The error may involve dao.UsersMapper.getUserByCardId

### The error occurred while executing a query

### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot load JDBC driver class '${driverClass}'] with root cause

java.lang.ClassNotFoundException: ${driverClass}

然后配置文件是在源文件夹中，源码是：

driverClass=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/mysql
user=root
password=As3014

DBCP数据源配置如下：

<!-- JNDI获取数据源(使用dbcp连接池) -->
	<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
		destroy-method="close" scope="singleton">
		<property name="driverClassName" value="${driverClass}" />
		<property name="url" value="${url}" />
		<property name="username" value="${user}" />
		<property name="password" value="${password}" />
	</bean>

UserMapper类的代码为：

public interface UsersMapper{
	@MapKey("id")
	public Map<Integer,Users> usersList();
	public Users getUserByCardId(String cardId);
	public Users getUserByName(String name);
	public Integer insertUsers(Users user);
	public Integer deleteUsers(Users user);
	public Integer updateUsers(Users user);
}

UserMapper.xml代码为：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"    
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="dao.UsersMapper">
	<!-- 查询用户-->
	<select id="usersList" resultType="users" parameterType="users">
		select * from users
	</select>
	<select id="getUserByName" resultType="users" parameterType="users">
		select * from Users where name=#{name}
	</select>
	<select id="getUserByCardId" resultType="users" parameterType="users">
		select * from Users where cardId=#{cardId}
	</select>
	<select id="insertUsers" parameterType="users">
		insert into Users(cardId,name,gender,createTime,password,status) values(
		#{cardId},#{name},#{gender},#{createTime},#{password},#{status}
		)
	</select>
	<select id="updateUsers" parameterType="users">
		update users set name=#{name},gender=#{gender},createTime=#{createTime},password=#{password},status=#{status} 
		where cardId=#{cardId}
	</select>
	<select id="deleteUsers" parameterType="users">
		delete from users where cardId=#{cardId}
	</select>
</mapper>

数据库驱动包为：mysql-connector-java-5.1.7-bin.jar之前项目中还有5.1.0和5.1.26版本的mysql驱动，与现状错误是一样的。driverClass这个类没问题的，在jar包可以找得到。

我找来找去也发现不了是哪的问题，请求各位大神帮忙指点！！！

Answer 1

driverClass=com.mysql.jdbc.Driver改为driver=com.mysql.jdbc.Driver<property name="driverClassName" value="${driverClass}" />改为<property name="driverClassName" value="${driver}" />