spring3与ibatis的集成搭建及简单应用

一、springibatis的简介

  关于springibatis的介绍在这里就不多说了,具体的简介及应用可以参考我前面的两篇文章:《ibatis的简介与初步搭建应用》《spring的简介与初步搭建应用》,这里主要结合两者,搭建起集成环境,并演示简单的实例应用。

二、集成环境的搭建

下图是我的搭建图

          

  ()Dao层搭建

  这里Dao层的搭建就是指Dao层接口,即Mapper接口的创建,和我《ibatis的简介与初步搭建应用》这篇文章里的是相同的,你也可以参考那里面的:

1.       表结构的创建,SQL如下:

CREATE TABLE goods (
  id int(11) NOT NULL DEFAULT '0',
  category_id int(11) DEFAULT NULL,
  name varchar(100) DEFAULT NULL,
  price decimal(10,0) DEFAULT NULL,
  description varchar(100) DEFAULT NULL,
  acount int(11) DEFAULT NULL,
  update_time timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
  PRIMARY KEY (id)
)

导入两条数据:

INSERT INTO goods VALUES (1,1,'Nokia-L900',3010,'Windows7 Mobile Phone',1,'2012-06-22 14:09:18');
INSERT INTO goods VALUES (2,1,'Moto-525',1800,'Andriod 2.2',15,'2012-06-23 01:19:36');

2.       创建表所对应的domain对象

package com.csdn.kane.domain;

import java.sql.Timestamp;

public class Goods {
	private int id;
	private int categoryId;
	private String name;
	private float price;
	private String description;
	private int acount;
	private Timestamp updateTime;
	
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public int getCategoryId() {
		return categoryId;
	}
	public void setCategoryId(int categoryId) {
		this.categoryId = categoryId;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public float getPrice() {
		return price;
	}
	public void setPrice(float price) {
		this.price = price;
	}
	public String getDescription() {
		return description;
	}
	public void setDescription(String description) {
		this.description = description;
	}
	public int getAcount() {
		return acount;
	}
	public void setAcount(int acount) {
		this.acount = acount;
	}
	public Timestamp getUpdateTime() {
		return updateTime;
	}
	public void setUpdateTime(Timestamp updateTime) {
		this.updateTime = updateTime;
	}
}

3.       创建Dao层接口,用来提供Dao层操作,在本应用中为GoodsDao接口

package com.csdn.kane.dao;

import org.apache.ibatis.annotations.Select;

import com.csdn.kane.domain.Goods;

public interface GoodsDao {
	@Select("select * from Goods where id=#{id}")
	public Goods selectGoodsById(int id);
}

4.       ibatis的配置文件

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
  PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
  "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
	<typeAliases>
		<typeAlias type="com.csdn.kane.domain.Goods"/>
	</typeAliases>
</configuration>

  因为这里集成了spring,所以在ibatis的配置文件中不再配置数据源,而是将其配置在spring的配置文件中,同时也不再配置GoodsDao接口,而是由spring的annotation来自动创建该bean,所以ibatis的配置文件只包含domain的配置。

()Service层搭建

这里Service层的搭建就是指service层的接口及实现类的创建。

1.       service接口

package com.csdn.kane.service;

import com.csdn.kane.domain.Goods;

public interface GoodsService {
	public Goods selectGoodsById(int id);
}

2.       service接口的实现类

package com.csdn.kane.service;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.csdn.kane.dao.GoodsDao;
import com.csdn.kane.domain.Goods;

@Service("goodsService")
public class GoodsServiceImpl implements GoodsService {

	@Autowired
	private GoodsDao goodsDao;
	
	@Override
	public Goods selectGoodsById(int id) {
		Goods goods = new Goods();
		goods = goodsDao.selectGoodsById(id);
		return goods;
	}

}

  正如看到的,在service的实现类中,我们将Dao层接口通过@Autowried注解来引入,方法中调用了Dao层接口,通过Dao层来获取数据,因为Dao层是直接和数据库打交道的。同时我们将该service实现类通过@Service("goodsService")注解来自动引入,而不用在配置文件中配置了。

3.       spring的配置文件

<?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:tx="http://www.springframework.org/schema/tx"  
	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/tx
           http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
           http://www.springframework.org/schema/context
           http://www.springframework.org/schema/context/spring-context.xsd">

	<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
		<property name="driverClassName">
			<value>com.mysql.jdbc.Driver</value>
		</property>
		<property name="url">
			<value>jdbc:mysql://127.0.0.1:3306/XiaoQingTest</value>
		</property>
		<property name="username">
			<value>root</value>
		</property>
		<property name="password">
			<value>08073440</value>
		</property>
		<property name="maxActive">
			<value>255</value>
		</property>
		<property name="maxIdle">
			<value>2</value>
		</property>
		<property name="maxWait">
			<value>120000</value>
		</property>
	</bean>

	<bean id="transactionManager"
		class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource" ref="dataSource" />
	</bean>

	<!-- enable autowire -->
	<context:annotation-config />
	
	<!-- (Annotation方式配置services)enable component scanning (beware that this 
		does not enable mapper scanning!) -->
	<context:component-scan base-package="com.csdn.kane.service" />

	<!-- enable transaction demarcation with annotations -->
	<tx:annotation-driven />


	<!-- define the SqlSessionFactory, notice that configLocation is not needed 
		when you use MapperFactoryBean -->
	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
		<property name="dataSource" ref="dataSource" />
		<property name="configLocation" value="com/csdn/kane/dao/mybatis-config.xml" />
	</bean>

	<!-- scan for mappers and let them be autowired -->
	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
		<!-- Mapper接口所在包名,Spring会自动查找其下的Mapper -->
		<property name="basePackage" value="com.csdn.kane.dao" />
	</bean>
	
	<!-- more bean definitions go here -->
	<!-- 
	<bean id="goodsService" class="com.csdn.kane.service.GoodsServiceImpl" />
	-->
</beans>

  首先我们配置了数据源,原本在ibatis中配置的数据源已省去,通过spring来进行数据源配置及事务管理。

  接着,我们配置使用springannotation注解来代替xml的方式配置bean.

  然后,我们配置了ibatisspring的集成,注意这里你要去ibatis官网下载ibatis-spring的集成jar包。

  最后,我们要配置Dao层的接口,能让spring自动实例化dao层的bean

 

三、测试

  最后,我们编写一个测试类来测试springibatis的集成

package com.csdn.kane.Test;

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

import com.csdn.kane.domain.Goods;
import com.csdn.kane.service.GoodsService;

public class TestIntegrate {

	public static void main(String[] args) {
		// create and configure beans
		ApplicationContext context = new ClassPathXmlApplicationContext("/springContext.xml");

		// retrieve configured instance
		GoodsService goodsService = (GoodsService) context.getBean("goodsService");

		Goods goods = goodsService.selectGoodsById(2);
		System.out.println(goods.getName());
		System.out.println(goods.getDescription());

	}

}

运行后,可能到结果如下:



到此,你就完成了spring和ibatis的集成,通过service层调用dao层接口完成示例,就这么简单。


 

posted @ 2012-07-23 00:01  java例子  阅读(296)  评论(0编辑  收藏  举报