Spring与Jdbc Demo

方法一：继承JdbcTemplate来实现

　　1、配置applicationContext　　

<!-- 获取数据源连接   dbcp -->    
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
<property name="url" value="jdbc:mysql://localhost:3306/hibernatetest"></property>
<property name="username" value="root"></property>
<property name="password" value="mysql"></property>
</bean>  
 
<!-- ********************************** -->
<bean id="personDao" class="cn.test.spring.jdbc.PersonDaoImpl">
    <property name="dataSource">
        <ref bean="dataSource"/>
    </property>
</bean>

　　2、继承applicationContext

public class PersonDaoImpl extends JdbcDaoSupport implements PersonDao {

    public void savePerson() {
        this.getJdbcTemplate().execute(" INSERT INTO person(pid,Pname,Page) VALUES(2,'李四',50) ");
        
    }

　　3、测试

@Test
    public void savePerson(){
        ApplicationContext applicationContext=new ClassPathXmlApplicationContext("cn/test/spring/jdbc/applicationContext.xml");
        PersonDao personDao= (PersonDao) applicationContext.getBean("personDao");
        personDao.savePerson();
    }

方法二：jdbcTemplate作为属性带入

　　1、配置applicationContext.xml

<!-- 获取数据源连接   dbcp -->    
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
<property name="url" value="jdbc:mysql://localhost:3306/hibernatetest"></property>
<property name="username" value="root"></property>
<property name="password" value="mysql"></property>
</bean> 

<!-- ********************************** -->

<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
    <property name="dataSource">
        <ref bean="dataSource"/>
    </property>
</bean>
<bean id="personDao2" class="cn.test.spring.jdbc.PersonDaoImpl2">
    <property name="jdbcTemplate">
        <ref bean="jdbcTemplate"/>
    </property>
</bean>

 　　2、声明字段

public class PersonDaoImpl2  implements PersonDao {

    private JdbcTemplate jdbcTemplate;
    
    public JdbcTemplate getJdbcTemplate() {
        return jdbcTemplate;
    }

    public void setJdbcTemplate(JdbcTemplate jdbcTemplate) {
        this.jdbcTemplate = jdbcTemplate;
    }

    
    public void savePerson() {
        this.getJdbcTemplate().execute(" INSERT INTO person(pid,Pname,Page) VALUES(22,'李四2',502) ");
        
    }

　　3、测试

@Test
    public void savePerson2(){
        ApplicationContext applicationContext=new ClassPathXmlApplicationContext("cn/test/spring/jdbc/applicationContext.xml");
        PersonDao personDao= (PersonDao) applicationContext.getBean("personDao2");
        personDao.savePerson();
    }

方法三：通过构造函数

1、配置applicationContext.xml

<!-- 获取数据源连接   dbcp -->    
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
<property name="url" value="jdbc:mysql://localhost:3306/hibernatetest"></property>
<property name="username" value="root"></property>
<property name="password" value="mysql"></property>
</bean> 


<!-- ********************************** -->
<bean id="personDao3" class="cn.test.spring.jdbc.PersonDaoImpl3">
    <constructor-arg index="0" ref="dataSource"></constructor-arg>
</bean>

2、构造函数

public class PersonDaoImpl3 extends JdbcTemplate  implements PersonDao {

    public PersonDaoImpl3(DataSource dataSource){
        super(dataSource);
    }
    
    public void savePerson() {
        this.execute(" INSERT INTO person(pid,Pname,Page) VALUES(23,'李四3',503) ");
        
    }

3、测试

@Test
    public void savePerson3(){
        ApplicationContext applicationContext=new ClassPathXmlApplicationContext("cn/test/spring/jdbc/applicationContext.xml");
        PersonDao personDao= (PersonDao) applicationContext.getBean("personDao3");
        personDao.savePerson();
    }

注：以上方法只能进行增删改，不能进行查找

查找：

目标方法：

public List<Person> getPersons() {
        return this.getJdbcTemplate().query("select * from person", new PersonRowMapper());
    }

PersonRowMapper.java

public class PersonRowMapper implements RowMapper {

    public Object mapRow(ResultSet rs, int rowNum) throws SQLException {
        Person person=new Person();
        person.setPid(rs.getLong("pid"));
        person.setPname(rs.getString("Pname"));
        person.setPage(rs.getString("Page"));
        return person;
    }

测试

@Test
    public void testQuery(){
        ApplicationContext applicationContext=new ClassPathXmlApplicationContext("cn/test/spring/jdbc/applicationContext.xml");
        PersonDao personDao= (PersonDao) applicationContext.getBean("personDao");
        List<Person> personList = personDao.getPersons();
        System.out.println(personList.size());
    }