一、JdbcTemplate

jdbc.properties

jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://127.0.0.2:3306/test?useUnicode=true&characterEncoding=GBK
jdbc.username=root
jdbc.password=root

lesson4.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:context="http://www.springframework.org/schema/context" 
    xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
    <!-- Scans within the base package of the application for @Components to configure as beans -->
    <context:component-scan base-package="bupt.lesson4" />
    <context:property-placeholder location="jdbc.properties"/>
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" 
        destroy-method="close">
        <property name="driverClassName" value="${jdbc.driverClassName}"/>
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
    </bean>
    
    <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>
</beans>
package bupt.lesson4;

import org.springframework.beans.factory.annotation.Required;
import org.springframework.stereotype.Repository;

@Repository("student")
public class Student {
    private int id;
    private String name;
    private String age;
    
    public Student(){
        
    }
    
    public Student(int id, String name, String age) {
        this.id = this.id;
        this.name = name;
        this.age = age;
    }
    
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getAge() {
        return age;
    }
    public void setAge(String age) {
        this.age = age;
    }
    
    
}
package bupt.lesson4;

import java.util.List;

public interface StudentDao {
    void insert(Student s);
    Student query(int id);
    List<Student> queryList();
    void deleteAll();
    void delete(int id);
}
package bupt.lesson4;

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

import javax.sql.DataSource;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowMapper;
import org.springframework.stereotype.Repository;

@Repository
public class StudentDaoImpl implements StudentDao {
    private JdbcTemplate jdbcTemplate;
    
    @Autowired
    public void init(@Qualifier("dataSource") DataSource dataSource){
        this.jdbcTemplate = new JdbcTemplate(dataSource);
    }
    
    @Override
    public void insert(Student s) {
        // TODO Auto-generated method stub
        String sql = "insert into student values (?,?,?)";
        jdbcTemplate.update(sql, new Object[]{s.getId(),s.getName(),s.getAge()});
    }

    @Override
    public Student query(int id) {
        // TODO Auto-generated method stub
        String sql = "select id,name,age from student where id = ?";
        return (Student) jdbcTemplate.queryForObject(sql, new Object[]{id}, new RowMapper(){

            @Override
            public Object mapRow(ResultSet rs, int rowNum) throws SQLException {
                // TODO Auto-generated method stub
                System.out.println("rowNum=" + rowNum);
                
                Student student = new Student();
                student.setId(rs.getInt("id"));
                student.setName(rs.getString("name"));
                student.setAge(rs.getString("age"));
                
                return student;
            }});
    }

    @Override
    public void delete(int id) {
        // TODO Auto-generated method stub
        String sql = "delete from student where id = ?";
        jdbcTemplate.update(sql, new Object[]{id});
    }

    @Override
    public void deleteAll() {
        // TODO Auto-generated method stub
        String sql = "delete from student";
        jdbcTemplate.execute(sql);
    }

    @Override
    public List<Student> queryList() {
        // TODO Auto-generated method stub
        String sql = "select id,name,age from student";
        List<Student> list = jdbcTemplate.query(sql, new RowMapper(){

            @Override
            public Object mapRow(ResultSet rs, int rowNum) throws SQLException {
                // TODO Auto-generated method stub
                System.out.println("rowNum=" + rowNum);
                
                Student student = new Student();
                student.setId(rs.getInt("id"));
                student.setName(rs.getString("name"));
                student.setAge(rs.getString("age"));
                
                return student;
            }});
        
        return list;
    }

}
package test.bupt.lesson4;

import java.util.Iterator;
import java.util.List;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import bupt.lesson4.Student;
import bupt.lesson4.StudentDao;

import junit.framework.TestCase;

public class testStudentDaoImpl extends TestCase {

    public void testInsert() {
        ApplicationContext ctx = new ClassPathXmlApplicationContext("lesson4.xml");
        StudentDao sDao = (StudentDao) ctx.getBean("studentDaoImpl");
        
        Student s = new Student();
        s.setId(1);
        s.setName("abc");
        s.setAge("26");
        sDao.insert(s);
    }
    
    public void testQuery(){
        ApplicationContext ctx = new ClassPathXmlApplicationContext("lesson4.xml");
        StudentDao sDao = (StudentDao) ctx.getBean("studentDaoImpl");
        
        Student s = sDao.query(1);
        System.out.println("name=" + s.getName());
    }
    
    public void testQueryList(){
        ApplicationContext ctx = new ClassPathXmlApplicationContext("lesson4.xml");
        StudentDao sDao = (StudentDao) ctx.getBean("studentDaoImpl");
        
        List<Student> list = sDao.queryList();
        
        Iterator iterator = list.iterator();
        while(iterator.hasNext()){
            Student s = (Student) iterator.next();
            System.out.println("name=" + s.getName());
        }        
    }
    
    public void testDelete(){
        ApplicationContext ctx = new ClassPathXmlApplicationContext("lesson4.xml");
        StudentDao sDao = (StudentDao) ctx.getBean("studentDaoImpl");
        
        sDao.delete(1);
        System.out.println("delete...");
    }
    
    public void testDeleteAll(){
        ApplicationContext ctx = new ClassPathXmlApplicationContext("lesson4.xml");
        StudentDao sDao = (StudentDao) ctx.getBean("studentDaoImpl");
        
        sDao.deleteAll();
        System.out.println("delete...");
    }

}