Spring整合mybstis
步骤：
1导入mybatis jar包与Spring jar包与Spring整合Mybatis jar包和数据库驱动包
ant-1.9.6.jar
ant-launcher-1.9.6.jar
asm-5.2.jar
cglib-3.2.5.jar
commons-logging-1.1.1.jar
commons-logging-1.2.jar
javassist-3.22.0-GA.jar
log4j-1.2.17.jar
log4j-api-2.3.jar
log4j-core-2.3.jar
mybatis-3.4.6.jar
mybatis-spring-1.3.2.jar
ognl-3.1.16.jar
slf4j-api-1.7.25.jar
slf4j-log4j12-1.7.25.jar
spring-aop-4.1.6.RELEASE.jar
spring-aspects-4.1.6.RELEASE.jar
spring-beans-4.1.6.RELEASE.jar
spring-context-4.1.6.RELEASE.jar
spring-context-support-4.1.6.RELEASE.jar
spring-core-4.1.6.RELEASE.jar
spring-expression-4.1.6.RELEASE.jar
spring-jdbc-4.1.6.RELEASE.jar
spring-orm-4.1.6.RELEASE.jar
spring-tx-4.1.6.RELEASE.jar
spring-web-4.1.6.RELEASE.jar
spring-webmvc-4.1.6.RELEASE.jar
sqljdbc4-2.0.jar
2 XML配置
| <!-- 配置数据源 --> <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <property name="driverClassName" value="com.microsoft.sqlserver.jdbc.SQLServerDriver"></property> <property name="url" value="jdbc:sqlserver://127.0.0.1;databaseName=test"></property> <property name="username" value="sa"></property> <property name="password" value="root"></property> </bean>
<!-- 配置sqlsessionFactory --> <bean id="sqlsessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource"></property> <property name="configLocation" value="classpath:MybatisConfig.xml"></property> </bean> <bean id="SqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate"> <constructor-arg index="0" ref="sqlsessionFactory"></constructor-arg> </bean> |
注：配置dataSource与qlsessionFactory时在class为org下的包的property的ID一定要与上面的相同，否则会报错，没有相应的set方法。(上面的红色字体)
3.创建业务类（实体类略）
| private SqlSessionTemplate sqlsession;
public User selectUser(String s_id) { User u=sqlsession.selectOne("com.user.UserMapper.selectUser", s_id); return u; }
public void setSqlsession(SqlSessionTemplate sqlsession) { this.sqlsession = sqlsession; } |
4.mybatisconfig
| <mappers> <mapper resource="com/user/User.xml" /> </mappers> |
5.SQL语句映射
| <select id="selectUser" resultType="com.user.User"> select*from students where s_id=#{s_id} </select> |
6.Test
| public static void main(String[] args) { ApplicationContext ac=new ClassPathXmlApplicationContext("Beans.xml"); UserDaoImpl udi=(UserDaoImpl)ac.getBean("userDao"); System.out.println(udi.selectUser("001").getS_id()); System.out.println(udi.selectUser("001").getS_name()); System.out.println(udi.selectUser("001").getS_sex()); } |
运行结果：
整合方式2
与上面的配置对比去掉了SqlSessionTemplate, userDao里ref变为sqlSessionFactory
| <!-- 配置sqlsessionFactory --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource"></property> <property name="configLocation" value="classpath:MybatisConfig.xml"></property> </bean> <bean id="userDao" class="com.dao.impl.UserDaoImpl"> <property name="sqlSessionFactory" ref="sqlSessionFactory"></property> </bean> |
业务类userDao继承SqlSessionDaoSupport
| public class UserDaoImpl extends SqlSessionDaoSupport implements UserDao {
public User selectUser(String s_id) {
return getSqlSession().selectOne("com.user.UserMapper.selectUser", s_id); } |
整合方式3
使用注解
1.usermapper接口
| public interface UserMapper { @Select("select*from students where s_id=#{s_id}") public User selectUser(String id); } |
实现类
| public class UserService implements UserMapper { private UserMapper usermapper; @Override public User selectUser(String id) { return usermapper.selectUser(id); } public void setUsermapper(UserMapper usermapper) { this.usermapper = usermapper; } } |
Xml配置
到Sqlsessionfactory与前面一样
| <!-- 配置usermapper --> <bean id="usermapper" class="org.mybatis.spring.mapper.MapperFactoryBean"> <property name="mapperInterface" value="com.service.UserMapper" ></property> <property name="sqlSessionFactory" ref="sqlSessionFactory"></property> </bean> <bean id="userService" class="com.serviceImp.UserService"> <property name="usermapper" ref="usermapper"></property> </bean> |