Spring整合Mybatis
阿新 • • 發佈：2020-08-01
整合Mybatis
步驟：
- 匯入相關jar包
- junit
- mybatis
- mysql資料庫連線
- spring相關包
- aop織入
- mybatis-spring
- 編寫配置檔案
- 測試
1、匯入相關jar包
<dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> </dependency> <dependency> <groupId>mysq1</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.47</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.5.2</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>5.1.9.RELEASE</version> </dependency> <!--Spring操作資料庫的話，還需要一個spring-jdbc--> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>5.1.9.RELEASE</version> </dependency> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjweaver</artifactId> <version>1.8.13</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>2.0.2</version> </dependency>
2、回憶Mybatis
- 編寫實體類
- 編寫核心配置檔案
- 編寫介面
- 編寫Mapper.xml
- 測試
3、Mybatis-Spring
1、匯入相關jar包
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.2</version>
</dependency>
2、建立mybatis-config.xml配置檔案
<?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> <package name="com.qilu.bean"/> </typeAliases> </configuration>
3、建立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:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans https://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/aop https://www.springframework.org/schema/aop/spring-aop.xsd"> <!--DataSource:使用Spring的資料來源提供的Mybatis的配置 c3p0 dbcp druid 我們這裡使用Spring提供的JDBC --> <bean id="datasource" class="org.springframework.jdbc.datasource.DriverManagerDataSource" > <property name="driverClassName" value="com.mysql.jdbc.Driver"/> <property name="url" value="jdbc:mysql://localhost:3306/test?characterEncoding=utf-8"/> <property name="username" value="root"/> <property name="password" value="123456"/> </bean> <!-- sqlSessionFactory --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <!-- 繫結Mybatis配置檔案 --> <property name="configLocation" value="classpath:mybatis-config.xml" /> <property name="mapperLocations" value="classpath:com/kuang/mapper/*.xml"/ > </bean> <bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate"> <!-- 只能使用構造器注入，因為他沒有構造方法 --> <constructor-arg index="0" ref="sqlSessionFactory" /> </bean> </beans>
4、編寫程式碼
1、編寫bean類
public class User {
private int id;
private String name;
private String password;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
@Override
public String toString() {
return "User{" +
"id=" + id +
", name='" + name + '\'' +
", password='" + password + '\'' +
'}';
}
}
2、編寫UserMapper介面
public interface UserMapper {
public List<User> selectUser();
}
3、編寫UserMapper.xml配置檔案
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.qilu.mapper.UserMapper">
<select id="selectUser" resultType="com.qilu.bean.User">
select * from user;
</select>
</mapper>
4、編寫UserMapperImpl實現類
public class UserMapperImpl implements UserMapper {
//我們的所有操作，原來都由sqlSession來執行，現在都由SqlSessionTemplate來完成
private SqlsessionTemplate sqlSession;
public void setSq1Session(SqlSessionTemplate sqlSession) {
this.sqlSession = sqlSession;
public List<User> selectUser () {
UserMapper mapper = sq1Session.getMapper(UserMapper.class);
return mapper.selectUser();
}
}
}
5、注入spring-mybatis.xml容器中
<?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:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
https://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
https://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/aop
https://www.springframework.org/schema/aop/spring-aop.xsd">
<!--DataSource:使用Spring的資料來源提供的Mybatis的配置 c3p0 dbcp druid
我們這裡使用Spring提供的JDBC
-->
<bean id="datasource" class="org.springframework.jdbc.datasource.DriverManagerDataSource" >
<property name="driverClassName" value="com.mysql.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://localhost:3306/test?characterEncoding=utf-8"/>
<property name="username" value="root"/>
<property name="password" value="123456"/>
</bean>
<!-- sqlSessionFactory -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<!-- 繫結Mybatis配置檔案 -->
<property name="configLocation" value="classpath:mybatis-config.xml" />
<property name="mapperLocations" value="classpath:com/kuang/mapper/*.xml"/ >
</bean>
<!-- 相當於mybatis中的SqlSession -->
<bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
<!-- 只能使用構造器注入，因為他沒有構造方法 -->
<constructor-arg index="0" ref="sqlSessionFactory" />
</bean>
<!-- 將UserMapperImpl注入到容器中 -->
<bean id="userMapperImpl" class="com.qilu.mapper.UserMapperImpl" />
</beans>
6、編寫測試類
public class MyTest {
@Test
public void test() throws IOException {
ApplicationContext context = new ClassPathXmlApplicationContext("spring-mybatis.xml");
UserMapper userMapper = context.getBean("userMapper", UserMapper.class);
for (User user : userMapper.selectUser()) {
System.out.println(user);
}
}
}