package cn.itcast.a_jdbctemplate;

import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;

import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowMapper;
import org.springframework.jdbc.core.support.JdbcDaoSupport;

import cn.itcast.bean.User;
//使用JDBC模板实现增删改查
public class UserDaoImpl extends JdbcDaoSupport implements UserDao {
    
    //方式一：springJdbcTemplate的时候不需要继承JdbcDaoSupport
    //方式二：继承JdbcDaoSupport。可以不要配置JdbcTemplate的bean。
    private JdbcTemplate jt;
    
    @Override
    public void save(User u) {
        String sql = "insert into t_user values(null,?) ";
        jt.update(sql, u.getName());
        System.out.println("");
    }
    @Override
    public void delete(Integer id) {
        String sql = "delete from t_user where id = ? ";
        jt.update(sql,id);
    }
    @Override
    public void update(User u) {
        String sql = "update t_user set name = ? where id=? ";
        jt.update(sql, u.getName(),u.getId());
    }
    @Override
    public User getById(Integer id) {
        String sql = "select * from taccount_1 where AreaID = ? ";
        System.out.println("---执行到");
        return super.getJdbcTemplate().queryForObject(sql,new RowMapper(){
            @Override
            public User mapRow(ResultSet rs, int arg1) throws SQLException {
                User u = new User();
                u.setId(rs.getInt("AreaID"));
                u.setName(rs.getString("Name"));
                return u;
            }}, id);
       
    }
    @Override
    public int getTotalCount() {
        String sql = "select count(*) from t_user ";
        Integer count = jt.queryForObject(sql, Integer.class);
        return count;
    }

    @Override
    public List getAll() {
        String sql = "select * from t_user ";
        List list = jt.query(sql, new RowMapper(){
            @Override
            public User mapRow(ResultSet rs, int arg1) throws SQLException {
                User u = new User();
                u.setId(rs.getInt("id"));
                u.setName(rs.getString("name"));
                return u;
            }});
        return list;
    }

    public void setJt(JdbcTemplate jt) {
        this.jt = jt;
        
    }
}

ApplicationContext.xml文件如下：



       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd ">





class="com.mchange.v2.c3p0.ComboPooledDataSource" >








class="org.springframework.jdbc.core.JdbcTemplate" >-->
-->
-->

 
class="cn.itcast.a_jdbctemplate.UserDaoImpl" >
 -->