接口
package cn.itcast.service;
import java.util.List;
import cn.itcast.bean.Person;
public interface IPersonService {
public void save(Person person);
public void update(Person person);
public void delete(int personId);
public Person getPerson(int personId);
public List<Person> getPersons();
}
實(shí)現(xiàn)類：
package cn.itcast.service.impl;
import java.util.List;
import javax.annotation.Resource;
import javax.sql.DataSource;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowMapper;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import cn.itcast.bean.Person;
import cn.itcast.service.IPersonService;
@Transactional
public class PersonServiceImpl implements IPersonService {
private JdbcTemplate jdbcTemplete;
// private DataSource datasource;
@Resource
public void setDatasource(DataSource datasource) {
this.jdbcTemplete = new JdbcTemplate(datasource);
}
public void delete(int personId) {
this.jdbcTemplete
.update("delete from person where id=?",
new Object[] { personId },
new int[] { java.sql.Types.INTEGER });
}
public Person getPerson(int personId) {
return (Person) this.jdbcTemplete.queryForObject(
"select * from person where id=?", new Object[] { personId },
new int[] { java.sql.Types.INTEGER }, new PersonRowMapper());
}
@SuppressWarnings("unchecked")
public List<Person> getPersons() {
return (List<Person>) this.jdbcTemplete.query("select * from person",
new PersonRowMapper());
}
public void save(Person person) {
System.out.println(person.getName());
this.jdbcTemplete.update("insert into person(name) values(?)",
new Object[] { person.getName() },
new int[] { java.sql.Types.VARCHAR });
}
public void update(Person person) {
this.jdbcTemplete.update("update person set name=? where id=?",
new Object[] { person.getName(), person.getId() }, new int[] {
java.sql.Types.VARCHAR, java.sql.Types.INTEGER });
}
}
實(shí)體類：
package cn.itcast.bean;
public class Person {
private int id;
private String name;
public Person() {
}
public Person(String name) {
this.name = name;
}
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;
}
}
package cn.itcast.service.impl;
import java.sql.ResultSet;
import java.sql.SQLException;
import org.springframework.jdbc.core.RowMapper;
import cn.itcast.bean.Person;
public class PersonRowMapper implements RowMapper {
public Object mapRow(ResultSet rs, int index) throws SQLException {
cn.itcast.bean.Person person=new Person(rs.getString("name"));
person.setId(rs.getInt("id"));
return person;
}
}
配置文件：
<?xml version="1.0" encoding="UTF-8"?>
<!--
- Application context definition for JPetStore's business layer.
- Contains bean references to the transaction manager and to the DAOs in
- dataAccessContext-local/jta.xml (see web.xml's "contextConfigLocation").
-->
<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"
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-2.5.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd">
<aop:aspectj-autoproxy proxy-target-class="true"/>
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="org.gjt.mm.mysql.Driver"/>
<property name="url" value="jdbc:mysql://localhost:3306/itcast?useUnicode=true&characterEncoding=UTF-8"/>
<property name="username" value="root"/>
<property name="password" value=""/>
<!-- 連接池啟動(dòng)時(shí)的初始值 -->
<property name="initialSize" value="1"/>
<!-- 連接池的最大值 -->
<property name="maxActive" value="500"/>
<!-- 最大空閑值.當(dāng)經(jīng)過(guò)一個(gè)高峰時(shí)間后，連接池可以慢慢將已經(jīng)用不到的連接慢慢釋放一部分，一直減少到maxIdle為止 -->
<property name="maxIdle" value="2"/>
<!-- 最小空閑值.當(dāng)空閑的連接數(shù)少于閥值時(shí)，連接池就會(huì)預(yù)申請(qǐng)去一些連接，以免洪峰來(lái)時(shí)來(lái)不及申請(qǐng) -->
<property name="minIdle" value="1"/>
</bean>
<bean id="txManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<tx:annotation-driven transaction-manager="txManager" />
<bean id="personServiceImpl"
class="cn.itcast.service.impl.PersonServiceImpl">
<property name="datasource" ref="dataSource" />
</bean>
</beans>
測(cè)試類：
package junit.test;
import java.util.List;
import org.junit.BeforeClass;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import cn.itcast.bean.Person;
import cn.itcast.service.IPersonService;
public class TestSpringAndJdbc {
public static IPersonService iPersonService;
@BeforeClass
public static void setUpBeforeClass() throws Exception {
ApplicationContext ctx=new ClassPathXmlApplicationContext("beans.xml");
iPersonService=(IPersonService)ctx.getBean("personServiceImpl");
}
@Test
public void TestSave(){
for(int i=1;i<5;i++){
iPersonService.save(new Person("傳智博客"+i));
}
}
@Test
public void TestFindPerson(){
iPersonService.getPerson(1);
System.out.println(iPersonService.getPerson(1).getName());
}
@Test
public void TestUpdate(){
Person person=iPersonService.getPerson(1);//通過(guò)id取得person對(duì)象
person.setName("張三");//設(shè)置名字
iPersonService.update(person);//更新
}
@Test
public void TestDelete(){
Person person=iPersonService.getPerson(2);
iPersonService.delete(person.getId());
}
@Test
public void testFindAllPeron(){
List<Person> list=iPersonService.getPersons();
for(Person person:list){
System.out.println(person.getId()+" "+person.getName());
}
}
}