Spring集成的JDBC编码和事务管理-蒲公英云

代码：

1.配置文件

beans.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:aop="http://www.springframework.org/schema/aop"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd 
    http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd">
    <!-- 定义BasicDataSource数据源 -->
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
        <!-- 指定连接数据库的JDBC驱动 -->
        <property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
        <!-- 指定数据库所用的url-->
        <property name="url" value="jdbc:mysql://localhost:3306/bookshop"></property>
        <!-- 指定连接数据库的用户名 -->
        <property name="username" value="root"></property>
        <!-- 指定连接数据库的密码 -->
        <property name="password" value="1234"></property>
        <!-- 连接池启动时的初始值 -->
        <property name="initialSize" value="1"></property>
        <!-- 连接池的最大值 -->
        <property name="maxActive" value="500"></property>
        <!-- 最大空闲值，当经过一个高峰时间后，连接池可以慢慢将已经用不到的连接慢慢释放一部分，一直减少到maxIdle为止 -->
        <property name="maxIdle" value="2"></property>
        <!-- 最小空闲值，当空闲的连接数小于阈值时，连接池就会预申请去一些连接，以免洪峰来时来不及申请 -->
        <property name="minIdle" value="1"></property>
    </bean>
    <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
         <property name="dataSource" ref="dataSource"/>
    </bean>
    <tx:annotation-driven transaction-manager="txManager"/>
    <bean id="personService" class="cn.itcast.service.impl.PersonServiceBean">
       <property name="datasource" ref="datasource"></property>
    </bean>
</beans>

2.源代码

Person.java

package cn.itcast.bean;
public class Person {
  private Integer id;
  private String name;
public Integer getId() {
    return id;
}
public void setId(Integer id) {
    this.id = id;
}
public String getName() {
    return name;
}
public void setName(String name) {
    this.name = name;
}
public Person(String name) {
    this.name = name;
}
}

PersonService.java

package cn.itcast.service;
import java.util.List;
import cn.itcast.bean.Person;
public interface PersonService {
  /*
   * 保存Person
   */
   public void save(Person person);
   /*
    * 更新Person
    */
   public void update(Person person);
   /*
    * 获取Person
    */
   public Person getPerson(Integer personid);
   /*
    * 获取所有Person集合的记录
    */
   public List<Person> getPersons();
   /*
    * 删除制定ID的person
    */
   public void delete(Integer personid);
}

PersonRowMapper.java

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 {
    @Override
    public Object mapRow(ResultSet rs, int index) throws SQLException {
        // TODO Auto-generated method stub
        Person person=new Person(rs.getString("name"));
        person.setId(rs.getInt("id"));
        return person;
    }
}

PersonServiceBean.java

package cn.itcast.service.impl;
import java.util.List;
import javax.sql.DataSource;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.transaction.annotation.Transactional;
import cn.itcast.bean.Person;
import cn.itcast.service.PersonService;
@Transactional
public class PersonServiceBean implements PersonService {
    private DataSource datasource;
    private JdbcTemplate jdbcTemplate;
    public void setDatasource(DataSource datasource) {
        this.jdbcTemplate=new JdbcTemplate(datasource);
    }
    public void save(Person person) {
        // TODO Auto-generated method stub
      jdbcTemplate.update("insert into person(name) values(?)", new Object[]{person.getName()}, new int[]{java.sql.Types.VARCHAR});
    }
    @Override
    public void update(Person person) {
        // TODO Auto-generated method stub
        jdbcTemplate.update("update person set name=? where id=?", new Object[]{person.getName(),person.getId()}, new int[]{java.sql.Types.VARCHAR,java.sql.Types.INTEGER});
    }
    @Override
    public Person getPerson(Integer personid) {
        // TODO Auto-generated method stub 
        return (Person) jdbcTemplate.queryForObject("select * from person where id=?", new Object[]{personid}, new int []{java.sql.Types.INTEGER},new PersonRowMapper());
    } 
    @Override
    public List<Person> getPersons() {
        // TODO Auto-generated method stub
        return (List<Person>) jdbcTemplate.query("select * from person",new PersonRowMapper());
    }
    @Override
    public void delete(Integer personid) {
        // TODO Auto-generated method stub
        jdbcTemplate.update("delete from person where id=?", new Object[]{personid}, new int[]{java.sql.Types.INTEGER});
    }
}

3.单元测试类

PersonServiceTest.java

package junit.test;
import static org.junit.Assert.*;
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.PersonService;
public class PersonServiceTest {
    private static PersonService personService;
    @BeforeClass
    public static void setUpBeforeClass() throws Exception {
        try {
            ApplicationContext cxt=new ClassPathXmlApplicationContext("beans.xml");
            personService=(PersonService) cxt.getBean("personService");
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
    @Test public void save(){
        for(int i=0;i<5;i++){
            personService.save(new Person("海哥"+i));
        }
    }
    @Test public void getPerson(){
        Person person=personService.getPerson(1);
        System.out.println(person.getName());
    }
    @Test public void update(){
        Person person=personService.getPerson(1);
        person.setName("张xx");
        personService.update(person);
    }
    @Test public void delete(){
        personService.delete(1);;
    }
    @Test public void getBeans(){
        for(Person person : personService.getPersons()){
            System.out.println(person.getName());
        }
    }
}