Open weikaijin123 opened 5 years ago
spring-mybatis.xml:
<?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:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.1.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
<!-- 自动扫描 -->
<context:component-scan base-package="com.hua.saf" />
<!-- 引入配置文件 -->
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location" value="classpath:jdbc.properties" />
</bean>
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="${driver}" />
<property name="url" value="${url}" />
<property name="username" value="${username}" />
<property name="password" value="${password}" />
<!-- 初始化连接大小 -->
<property name="initialSize" value="${initialSize}" />
<!-- 连接池最大数量 -->
<property name="maxActive" value="${maxActive}" />
<!-- 连接池最大空闲 -->
<property name="maxIdle" value="${maxIdle}" />
<!-- 连接池最小空闲 -->
<property name="minIdle" value="${minIdle}" />
<!-- 获取连接最大等待时间 -->
<property name="maxWait" value="${maxWait}" />
</bean>
<!-- spring和MyBatis完美整合,不需要mybatis的配置映射文件 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<!-- 自动扫描mapping.xml文件,**表示迭代查找 -->
<property name="mapperLocations" value="classpath:com/hua/saf/**/*.xml" />
</bean>
<!-- DAO接口所在包名,Spring会自动查找其下的类 ,包下的类需要使用@MapperScan注解,否则容器注入会失败 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.hua.saf.*" />
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
</bean>
<!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
</beans>
UserMapper.xml:
<?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">
<!-- 为这个mapper指定一个唯一的namespace,namespace的值习惯上设置成包名+sql映射文件名,这样就能够保证namespace的值是唯一的
例如namespace="me.gacl.mapping.userMapper"就是me.gacl.mapping(包名)+userMapper(userMapper.xml文件去除后缀)
-->
<mapper namespace="com.hua.saf.dao.UserDao">
<!--
在select标签中编写查询的SQL语句, 设置select标签的id属性为getUser,id属性值必须是唯一的,不能够重复,
使用parameterType属性指明查询时使用的参数类型,resultType属性指明查询返回的结果集类型
resultType="com.hua.saf.User"就表示将查询结果封装成一个User类的对象返回,User类就是t_user表所对应的实体类
-->
<!-- 根据id查询得到一个user对象-->
<select id="getUser" parameterType="int" resultType="com.hua.saf.pojo.User">
select * from t_user where id=#{id}
</select>
</mapper>
dao类:
/**
* 这里的@MapperScan就是上面所讲的Mapper扫描器中所需要的配置,会自动生成代理对象。
* 注意,接口中的方法名称要和对应的MyBatis映射文件中的语句的id值一样,因为生成的
* 动态代理,会根据这个匹配相应的Sql语句执行。另外就是方法的参数和返回值也需要注
* 意。接口中的方法如何定义,对应的MyBatis映射文件就应该进行相应的定义。
* 最后,标注中的userDao是用来作为Spring的Bean的id(或name)进行使用的,方便我
* 们在Service层进行注入使用。
*/
@MapperScan
public interface UserDao {
//此处的方法名必须和mapper中的映射文件中的id同名
//回去映射文件中通过com.hua.saf.dao.UserDao.getUser,即this.getClass().getName()+".getUser"
public User getUser(int id);
}
service类:
@Service("userService")
public class UserServiceImpl implements IUserService {
@Resource
private UserDao userDao;
public User getUser(int id) {
return userDao.getUser(id);
}
}
mybatis中, sessionFactory可由SqlSessionFactoryBuilder.来创建。MyBatis-Spring 中,使用了SqlSessionFactoryBean来替代。SqlSessionFactoryBean有一个必须属性dataSource,另外其还有一个通用属性configLocation(用来指定mybatis的xml配置文件路径)。 spring-mybatis.xml
<?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:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.1.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
<!-- 自动扫描 -->
<context:component-scan base-package="com.hua.saf" />
<!-- 引入配置文件 -->
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location" value="classpath:jdbc.properties" />
</bean>
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="${driver}" />
<property name="url" value="${url}" />
<property name="username" value="${username}" />
<property name="password" value="${password}" />
<!-- 初始化连接大小 -->
<property name="initialSize" value="${initialSize}" />
<!-- 连接池最大数量 -->
<property name="maxActive" value="${maxActive}" />
<!-- 连接池最大空闲 -->
<property name="maxIdle" value="${maxIdle}" />
<!-- 连接池最小空闲 -->
<property name="minIdle" value="${minIdle}" />
<!-- 获取连接最大等待时间 -->
<property name="maxWait" value="${maxWait}" />
</bean>
<!-- spring和MyBatis完美整合,不需要mybatis的配置映射文件 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="configLocation" value="classpath:sqlMapConfig.xml"/>
<!-- 自动扫描mapping.xml文件,**表示迭代查找,也可在sqlMapConfig.xml中单独指定xml文件-->
<property name="mapperLocations" value="classpath:com/hua/saf/**/*.xml" />
</bean>
<!-- mybatis spring sqlSessionTemplate,使用时直接让spring注入即可 -->
<bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
<constructor-arg index="0" ref="sqlSessionFactory"></constructor-arg>
</bean>
<!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
</beans>
sqlMapConfig.xml
<?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.hua.saf.pojo.User" alias="User" />
</typeAliases>
</configuration>
User.java:
public class User {
private int id;
private String username;
private String password;
private int age;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
}
UserDao.java
@Repository
public class UserDao{
@Resource
private SqlSessionTemplate sqlSessionTemplate;
public User getUser(int id) {
return sqlSessionTemplate.selectOne(this.getClass().getName() + ".getUser", 1);
}
}
UserService.java
@Service
public class UserService{
@Resource
private UserDao userDao;
public User getUser(int id) {
return userDao.getUser(id);
}
}
spring-mybatis.xml
<?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:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.1.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
<!-- 自动扫描 -->
<context:component-scan base-package="com.hua.saf" />
<!-- 引入配置文件 -->
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location" value="classpath:jdbc.properties" />
</bean>
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="${driver}" />
<property name="url" value="${url}" />
<property name="username" value="${username}" />
<property name="password" value="${password}" />
<!-- 初始化连接大小 -->
<property name="initialSize" value="${initialSize}" />
<!-- 连接池最大数量 -->
<property name="maxActive" value="${maxActive}" />
<!-- 连接池最大空闲 -->
<property name="maxIdle" value="${maxIdle}" />
<!-- 连接池最小空闲 -->
<property name="minIdle" value="${minIdle}" />
<!-- 获取连接最大等待时间 -->
<property name="maxWait" value="${maxWait}" />
</bean>
<!-- spring和MyBatis完美整合,不需要mybatis的配置映射文件 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="configLocation" value="classpath:sqlMapConfig.xml"/>
<!-- 自动扫描mapping.xml文件,**表示迭代查找,也可在sqlMapConfig.xml中单独指定xml文件-->
<property name="mapperLocations" value="classpath:com/hua/saf/**/*.xml" />
</bean>
<!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
</beans>
sqlMapConfig.xml:
<?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.hua.saf.pojo.User" alias="User" />
</typeAliases>
</configuration>
User.java
public class User {
private int id;
private String username;
private String password;
private int age;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
}
UserDao.java
@Repository
public class UserDao extends SqlSessionDaoSupport{
public User getUser(int id) {
return this.getSqlSession().selectOne(this.getClass().getName() + ".getUser", 1);
}
//使用SqlSessionDaoSupport必须注意,此处源码1.1.1中有自动注入,1.2中取消了自动注入,需要手工注入,侵入性强
//也可在spring-mybatis.xml中如下配置,但是这种有多少个dao就要配置到少个,多个dao就很麻烦。
//<bean id="userDao" class="com.hua.saf.dao.UserDao">
// <property name="sqlSessionFactory" ref="sqlSessionFactory"/>
//</bean>
@Resource
public void setSqlSessionFactory(SqlSessionFactory sqlSessionFactory) {
// TODO Auto-generated method stub
super.setSqlSessionFactory(sqlSessionFactory);
}
}
UserService.java
@Service
public class UserService{
@Resource
private UserDao userDao;
public User getUserss(int id) {
return userDao.getUser(1);
}
}
https://www.cnblogs.com/wangmingshun/p/5674633.html