Spring+Mybatis操作数据库(不用Mapper映射器)

jsr250-api:

<dependency>  
<groupId>javax.annotation</groupId>  
<artifactId>jsr250-api</artifactId>  
<version>1.0</version>  
</dependency>

注意事项：mybatis-spring使用的是1.3.2的，此处mybatis版本使用的是3.4.1的，

如果用mybatis3.2及以下版本的会报：

java.lang.IllegalAccessError: org.apache.commons.dbcp.DelegatingPreparedStatement.isClosed()Z

如果使用mybatis3.4.6版本会报：

Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionTemplate': Lookup method resolution failed; nested exception is java.lang.IllegalStateException: Failed to introspect Class [org.mybatis.spring.SqlSessionTemplate] from ClassLoader [sun.misc.Launcher$AppClassLoader@66d3c617]

一、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:context="http://www.springframework.org/schema/context"
       xmlns:jdbc="http://www.springframework.org/schema/jdbc"
       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:mvc="http://www.springframework.org/schema/mvc"
       xmlns:util="http://www.springframework.org/schema/util"
       xmlns:cache="http://www.springframework.org/schema/cache"
       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/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-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/mvc http://www.springframework.org/schema/mvc/spring-mvc-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/cache
        http://www.springframework.org/schema/cache/spring-cache-3.2.xsd">
    <!-- <context:property-placeholder location="classpath:dbconnection.properties" /> -->
    <!-- 数据源 -->
    <bean id="DataSource"  class="org.apache.commons.dbcp.BasicDataSource">
    <property name="driverClassName" value="oracle.jdbc.driver.OracleDriver"/>
    <property name="url" value="jdbc:oracle:thin:@dx.abc.com:152:orcl"/>
    <property name="username" value="NC"/>
    <property name="password" value="2016"/>
    </bean>
    <!-- 而像这种使用接口实现的方式 是使用sqlsessionTemplate来进行操作的，他提供了一些方法 -->
    <bean id="sqlSessionFactory"  class="org.mybatis.spring.SqlSessionFactoryBean">
    <property name="dataSource" ref="DataSource"/>
    <!-- mybatis配置文件路径 -->
    <!-- <property name="configLocation"  value="classpath:mybatis-config.xml"/> -->
    <!-- 此处配置了com.pojo,在mapper映射文件中就不用写返回实体类的包名了 -->
    <property name="typeAliasesPackage" value="com.pojo"/>
    <!-- 实体类映射文件路径 -->
    <property name="mapperLocations" value="classpath:com/mapper/TmUserNoMapper.xml"/>
    </bean>
    
    <!-- 配置sqlSessionTemplate --> 
    <bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">  
        <constructor-arg index="0" ref="sqlSessionFactory" />  
    </bean> 
    
    <!-- <bean id="tmUserDaoImpl" class="com.dao.TmUserDaoImpl">
        <property name="sqlSessionTemplate" ref="sqlSessionTemplate"/>
    </bean> -->
    
     <!-- 事务 需要三件事才可以  一具体的事务实现着  二事务管理器  三  aop 事务控制  不起作用-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">    
        <property name="dataSource" ref="DataSource" />    
    </bean>

    <!--6 容器自动扫描IOC组件  -->
    <context:component-scan base-package="com"/>
</beans> 

二、映射文件

namespace不一定与映射器名称一致，id也可不予映射器方法名一致，必须要写resultMap否则返回结果一直为null,property为实体类的属性值，column为数据库字段名

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="test">

    <resultMap id="tmuserMap" type="com.pojo.TmUserPO">
        <id  property="pkUser" column="pk_user"/>
        <result property="realName" column="real_name"/>
        <result property="userName" column="user_name"/>
    </resultMap>
    
    <select id="findAll" parameterType="String"  resultType="TmUserPO" resultMap="tmuserMap">
        select * from tm_user where real_name=#{real_name}
    </select>
</mapper>

 三、Dao

package com.dao;

import com.pojo.TmUserPO;
public interface TmUserDao {
	public TmUserPO find(String real_name);

}




package com.dao;

import org.mybatis.spring.SqlSessionTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;

import com.pojo.TmUserPO;
@Repository
public class TmUserDaoImpl  implements TmUserDao {
	@Autowired
	SqlSessionTemplate sqlSessionTemplate;
	public TmUserPO find(String real_name) {
		return sqlSessionTemplate.selectOne("test.findAll",real_name);
	}

}

四、实体类pojo

/*
 Copyright (c) 2005 KWT, Inc. All  Rights Reserved.
 */

package com.pojo;

import java.util.Date;

public class TmUserPO {


	private String pkFinance;
	private String pkOrg;
	private String pkUser;
	private String pkGroup;
	private String userName;
	private String realName;
	private String userPhone;
	private Date createDate;
	private String password;


	public void setPkFinance(String pkFinance){
		this.pkFinance=pkFinance;
	}

	public String getPkFinance(){
		return this.pkFinance;
	}

	public void setPkOrg(String pkOrg){
		this.pkOrg=pkOrg;
	}

	public String getPkOrg(){
		return this.pkOrg;
	}


	public void setPkUser(String pkUser){
		this.pkUser=pkUser;
	}

	public String getPkUser(){
		return this.pkUser;
	}

	public void setPkGroup(String pkGroup){
		this.pkGroup=pkGroup;
	}

	public String getPkGroup(){
		return this.pkGroup;
	}

	public void setUserName(String userName){
		this.userName=userName;
	}

	public String getUserName(){
		return this.userName;
	}

	public void setRealName(String realName){
		this.realName=realName;
	}

	public String getRealName(){
		return this.realName;
	}

	public void setUserPhone(String userPhone){
		this.userPhone=userPhone;
	}

	public String getUserPhone(){
		return this.userPhone;
	}

	public void setCreateDate(Date createDate){
		this.createDate=createDate;
	}

	public Date getCreateDate(){
		return this.createDate;
	}

	public void setPassword(String password){
		this.password=password;
	}

	public String getPassword(){
		return this.password;
	}

}

五、测试方法

static TmUserDaoImpl tmUser;
	  @BeforeClass
	  public static void before(){
	      ApplicationContext ctx=new ClassPathXmlApplicationContext("applicationContextNoMapper.xml");
	      tmUser=(TmUserDaoImpl)ctx.getBean("tmUserDaoImpl");
	  }
	  @Test
	  public void testSpringMyBatisNoMapper() {
		  TmUserPO tmuser=tmUser.find("姚景明");
		  System.out.println(tmuser.getUserName());
	  }