public class User {
    private String uid;//id主键
    private String loginname;//登录名
    private String loginpass;//登录密码
    private String email;//邮箱
    private Integer status;//激活状态
    private String activationCode;//激活码，唯一的
    private String gender;//性别
    private String nickname;//昵称
    private String phone;//电话
// 提供set/get方法

public interface IUserDao {
    //登录
    User login(String username,String password) throws Exception;
    //姓名是否存在
    int findName(String name) throws Exception;
    //注册
    int register(User user) throws Exception;
    //查询所有信息
    List<User> findAll() throws Exception;
    //根据姓名删除
    int delUser(String name) throws Exception;

public class UserDaoImpl implements IUserDao {
    private QueryRunner runner;
    //提供set方法，注入属性
    public void setRunner(QueryRunner runner) {
        this.runner = runner;
    }
    //登录
    @Override
    public User login(String username, String password) throws Exception {
        return runner.query("SELECT * FROM T_USER where loginname = ? and loginpass = ?",
　　　　　　　　new BeanHandler<User>( User.class),username,password);
    }
    //判断姓名是否存在
    @Override
    public int findName(String name) throws Exception {
        String sql ="SELECT count(1) n FROM T_USER WHERE  loginname = ?";
        Object query = runner.query(sql , new ScalarHandler<Object>("n"),name);
        return Integer.valueOf(query.toString());
    }
    //注册
    @Override
    public int register(User user) throws Exception {
        Object[] params = {user.getUid(),user.getLoginname(),user.getLoginpass(),user.getEmail(),
                user.getStatus(),user.getActivationCode(),user.getGender(),user.getNickname(),user.getPhone()};
        return runner.update("insert into t_user values(?,?,?,?,?,?,?,?,?)",params);
    }
    //查询所有用户信息
    @Override
    public List<User> findAll() throws Exception {
        return runner.query("select * from t_user",new BeanListHandler<User>(User.class));
    }
    //删除
    @Override
    public int delUser(String name) throws Exception {
        return runner.update("delete from t_user where loginname = ?",name);
    }

public interface IUserService {
    User login(String username,String password) throws Exception;
    boolean findName(String name) throws Exception;
    boolean register(User user) throws Exception;
    List<User> findAll() throws Exception;
    int delUser(String name) throws Exception;

public class UserServiceImpl implements IUserService {
    private IUserDao userDao;
    //提供set方法，注入属性
    public void setUserDao(IUserDao userDao) {
        this.userDao = userDao;
    }
    @Override
    public User login(String username, String password) throws Exception {
        return userDao.login(username, password);
    }
    @Override
    public boolean findName(String name) throws Exception {
        return userDao.findName(name)>0?true:false;
    }
    @Override
    public boolean register(User user) throws Exception {
        return userDao.register(user)>0?true:false;
    }
    @Override
    public List<User> findAll() throws Exception {
        return userDao.findAll();
    }
    @Override
    public int delUser(String name) throws Exception {
        return userDao.delUser(name);
    }

<?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:p="http://www.springframework.org/schema/p"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    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/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd">
        
       <!-- 带连接池的数据源:  c3p0 -->
       <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
           <!-- 通过set方法赋值 -->
               <property name="driverClass" value="oracle.jdbc.OracleDriver"/>
               <property name="jdbcUrl" value="jdbc:oracle:thin:@localhost:1521:orcl"/>
               <property name="user" value="yosebook"/>
               <property name="password" value="123"/>
       </bean>
        <!-- 给Dbutils工具类，注入添加数据源 -->
        <bean id="queryRunner" class="org.apache.commons.dbutils.QueryRunner" scope="prototype">
            <!-- 通过有参构造方法   -->
            <constructor-arg name="ds" ref="dataSource"/>
        </bean>
        <!-- 给UserDaoImpl注入值 -->
        <bean id="userDao" class="com.zl.spring.dao.impl.UserDaoImpl">
            <property name="runner" ref="queryRunner"/>
        </bean>
        <!-- 给UserServiceImpl注入值 -->
        <bean id="userService" class="com.zl.spring.service.impl.UserServiceImpl">
            <property name="userDao" ref="userDao"></property>
         </bean>
</beans>