是的,真的是那个不好用的ibatis,不是好用的mybatis。
由于工作需要用到ibatis需要自己搭建环境,遇到了不少的坑,做一下记录。
一、环境配置
- Maven
- JDK1.6 (非常重要,使用SimpleDataSource作为数据源会在JDK1.8 会触发 not suitable driver found 异常,具体原因另外博文进行解析)
- MySQL 5.6
二、Maven依赖配置
1.引入ibatis-sqlmap
<dependency> <groupId>org.apache.ibatisgroupId> <artifactId>ibatis-sqlmapartifactId> <version>2.3.4.726version> dependency>
2.引入spring (spring-orm 是spring集成ibatis的关键所在)
<dependency> <groupId>org.springframeworkgroupId> <artifactId>spring-ormartifactId> <version>3.0.5.RELEASEversion> dependency>
3.引入spring aop以对事务进行管理
<dependency> <groupId>org.springframeworkgroupId> <artifactId>spring-aopartifactId> <version>3.0.5.RELEASEversion> dependency> <dependency> <groupId>org.aspectjgroupId> <artifactId>aspectjrtartifactId> <version>1.5.4version> dependency> <dependency> <groupId>org.aspectjgroupId> <artifactId>aspectjweaverartifactId> <version>1.5.4version> dependency>
完整的pom.xml文件
xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0modelVersion> <groupId>com.kwjgroupId> <artifactId>firstibatisartifactId> <version>1.0-SNAPSHOTversion> <dependencies> <dependency> <groupId>org.apache.ibatisgroupId> <artifactId>ibatis-sqlmapartifactId> <version>2.3.4.726version> dependency> <dependency> <groupId>mysqlgroupId> <artifactId>mysql-connector-javaartifactId> <version>5.1.14version> dependency> <dependency> <groupId>org.springframeworkgroupId> <artifactId>spring-ormartifactId> <version>3.0.5.RELEASEversion> dependency> <dependency> <groupId>org.springframeworkgroupId> <artifactId>spring-aopartifactId> <version>3.0.5.RELEASEversion> dependency> <dependency> <groupId>org.aspectjgroupId> <artifactId>aspectjrtartifactId> <version>1.5.4version> dependency> <dependency> <groupId>org.aspectjgroupId> <artifactId>aspectjweaverartifactId> <version>1.5.4version> dependency> dependencies> project>
三.Spring 配置
application.xml 文件,注意SqlMapClient以及SqlMapClientTemplate
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:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-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/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd"> <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <property name="driverClassName" value="com.mysql.jdbc.Driver"/> <property name="username" value="root"/> <property name="password" value="123456"/> <property name="url" value="jdbc:mysql://localhost:3306/test"/> bean> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"/> bean> <bean id="sqlMapClient" class="org.springframework.orm.ibatis.SqlMapClientFactoryBean"> <property name="configLocation" value="classpath:SqlMapConfig.xml"/> <property name="dataSource" ref="dataSource"/> <bean id="sqlMapClientTemplate" class="org.springframework.orm.ibatis.SqlMapClientTemplate"> <constructor-arg ref="sqlMapClient" /> bean> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <tx:method name="get*" read-only="true"/> <tx:method name="delete*" rollback-for="Exception" propagation="REQUIRED" isolation="READ_COMMITTED" /> <tx:method name="update*" rollback-for="Exception" propagation="REQUIRED" isolation="READ_COMMITTED"/> <tx:method name="remove*" rollback-for="Exception" isolation="READ_COMMITTED"/> <tx:method name="count*" read-only="true"/> tx:attributes> tx:advice> <aop:config> <aop:pointcut id="daoMethod" expression="execution(public * service.*.*(..))"/> <aop:advisor advice-ref="txAdvice" pointcut-ref="daoMethod"/> aop:config> <context:component-scan base-package="service.impl;dao"/> beans>
四.ibatis 配置
SqlMapConfig.xml 文件
xml version="1.0" encoding="UTF-8" ?> DOCTYPE sqlMapConfig PUBLIC "-//ibatis.apache.org//DTD SQL Map Config 2.0//EN" "http://ibatis.apache.org/dtd/sql-map-config-2.dtd"> <sqlMapConfig> <sqlMap resource="mapper/User.xml" /> sqlMapConfig>
mapper/User.xml 文件 (users表的中就id和name字段,其中id为自增长字段)
xml version="1.0" encoding="UTF-8" ?> DOCTYPE sqlMap PUBLIC "-//ibatis.apache.org//DTD SQL Map 2.0//EN" "http://ibatis.apache.org/dtd/sql-map-2.dtd"> <sqlMap> <typeAlias alias="bean.User" type="bean.User" /> <select id="getAllUsers" resultClass="bean.User"> select * from users select> <select id="getUserListById" parameterClass="bean.User" resultClass="bean.User"> select * from users select> <update id="updateUser" parameterClass="bean.User"> update users set `name` = #name# where id = #id# update> <insert id="insertUser" parameterClass="bean.User"> insert users(name) values(#name#) insert> sqlMap>
五、代码
bean.User

package bean; public class User { 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; } @Override public String toString() { return "[id:"+id+",name:"+name+"]"; } }
UserDaoImpl (接口就不放了)

package dao.impl; import bean.User; import dao.UserDAO; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.orm.ibatis.SqlMapClientTemplate; import org.springframework.stereotype.Component; @Component public class UserDAOImpl implements UserDAO { @Autowired private SqlMapClientTemplate sqlMapClientTemplate; public int updateUser(User user){ return sqlMapClientTemplate.update("updateUser",user); } }
UserServiceImpl (接口自行定义,该类的代码主要对Spring的事务回滚机制进行测试)

package service.impl; import bean.User; import dao.UserDAO; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import service.UserService; @Service public class UserServiceImpl implements UserService { @Autowired private UserDAO userDAO; public int updateUser(User user){ if(user == null){ return 0; } return userDAO.updateUser(user); } public int updateUser(User user, boolean triggerException) { if(user == null){ return 0; } int result = userDAO.updateUser(user); if(triggerException){ throw new RuntimeException("触发异常,检查是否回滚"); } return result; } }
Main

import bean.User; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; import service.UserService; public class SpringMain { public static void main(String[] args){ ApplicationContext context = new ClassPathXmlApplicationContext("classpath:application.xml"); UserService userService = (UserService) context.getBean(UserService.class); User user = new User(); user.setId(1); String newName = "NewData:"+System.currentTimeMillis(); user.setName(newName); userService.updateUser(user); } }