简单代码结构：

//Book.java

package com.hts.entity;

public class Book {

	private String id;

	private String bookName;

	private String bookAuthor;

	public String getId() {

		return id;

	}

	public void setId(String id) {

		this.id = id;

	}

	public String getBookName() {

		return bookName;

	}

	public void setBookName(String bookName) {

		this.bookName = bookName;

	}

	public String getBookAuthor() {

		return bookAuthor;

	}

	public void setBookAuthor(String bookAuthor) {

		this.bookAuthor = bookAuthor;

	}

	public Book() {

	}

	@Override

	public String toString() {

		return "Book [id=" + id + ", bookName=" + bookName + ", bookAuthor=" + bookAuthor + "]";

	}

}

//接口BookDao.java

package com.hts.dao;

import org.springframework.stereotype.Component;

import com.hts.entity.Book;

@Component

public interface BookDao {

	public void add(Book b);

}

//TestDemo.java

package com.hts.test;

import org.junit.Test;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.hts.dao.BookDao;

import com.hts.entity.Book;

public class TestDemo {

	@Test

	public void testBookAdd(){

		ApplicationContext ac= new ClassPathXmlApplicationContext("applicationContext.xml");

		BookDao bd=ac.getBean("bookDao",BookDao.class);

		Book b=new Book();

		b.setId("3");

		b.setBookName("美好的明天");

		b.setBookAuthor("hts");

		bd.add(b);

	}

}

//db.properties，mysql数据库

user=root

password=******

url=jdbc:mysql://ip/数据库名

driver=com.mysql.jdbc.Driver//驱动

maxActive=5//连接池的最大数据库连接数

maxWait=5000//最大等待时间

①：applicationContext.xml的配置：

<?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" xmlns:util="http://www.springframework.org/schema/util"

	xmlns:jee="http://www.springframework.org/schema/jee" xmlns:tx="http://www.springframework.org/schema/tx"

	xmlns:aop="http://www.springframework.org/schema/aop"

	xmlns:jpa="http://www.springframework.org/schema/data/jpa" xmlns:mvc="http://www.springframework.org/schema/mvc"

	xsi:schemaLocation="

		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd

		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd

		http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.2.xsd

		http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.2.xsd

		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd

		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd

		http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd

		http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">

<!--连入db.properties-->

<util:properties  id="jdbc" location="classpath:db.properties"></util:properties>

<!--配置数据库连接池信息-->

<bean id="ds" class="org.apache.commons.dbcp.BasicDataSource">

 	   <property name="url" value="#{jdbc.url}"></property>

	   <property name="driverClassName" value="#{jdbc.driver}"></property>

	   <property name="username" value="#{jdbc.user}"></property>

	   <property name="password" value="#{jdbc.password}"></property>

	   <property name="maxActive" value="#{jdbc.maxActive}"></property>

	   <property name="maxWait" value="#{jdbc.maxWait}"></property>

</bean>

<!--配置  mybatis 的session 工厂-->

<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">

       <property name="dataSource" ref="ds"></property>

       <property name="mapperLocations" value="classpath:com/hts/sql/*.xml"></property>//sqlMapper.xml所在的位置

</bean>

<!-- 扫描指定包下面的所有接口，匹配和映射sql数据   -->

<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">

       <property name="basePackage" value="com.hts.dao"></property>

</bean>

<!--开启注解扫描    -->

<context:component-scan base-package="com.hts"></context:component-scan>

</beans>

②：BookDaoMapper.xml中的配置

<?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE mapper PUBLIC "-//ibatis.apache.org//DTD Mapper 3.0//EN"

 "http://ibatis.apache.org/dtd/ibatis-3-mapper.dtd">

<!-- namespace必须和对应的接口想对应 ,方法名和id对应 -->

 <mapper namespace="com.hts.dao.BookDao">

    <insert id="add"  parameterType="com.hts.entity.Book">

       insert into book(id,bookName,bookAuthor) values(#{id},#{bookName},#{bookAuthor})

    </insert>

 </mapper>

③：数据库表的表名book，有id，bookName，bookAuthor三个字段

④：junit运行TestDemo中testBookAdd方法，发现数据已经插入数据库