spring 集成 mybatis
- 1、spring对junit的支持
-
- 1.1、对junit4的支持
- [1.2 对junit5的支持](#1.2 对junit5的支持)
- 2、Spring6集成MyBatis3.5
-
- [2.1 实现步骤](#2.1 实现步骤)
- [2.2 实现](#2.2 实现)
1、spring对junit的支持
1.1、对junit4的支持
依赖
xml
<?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>4.0.0</modelVersion>
<groupId>com.powernode</groupId>
<artifactId>spring6-015-junit</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<!--仓库-->
<repositories>
<!--spring里程碑版本的仓库-->
<repository>
<id>repository.spring.milestone</id>
<name>Spring Milestone Repository</name>
<url>https://repo.spring.io/milestone</url>
</repository>
</repositories>
<dependencies>
<!--spring context依赖-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>6.0.0-M2</version>
</dependency>
<!--spring对junit的支持相关依赖-->
<dependency>
<groupId>org.springframework</groupId>
既支持junit4也支持5
<artifactId>spring-test</artifactId>
<version>6.0.0-M2</version>
</dependency>
<!--junit4依赖--> 记得要4.12及以上
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.13.2</version>
<scope>test</scope>
</dependency>
</dependencies>
<properties>
<maven.compiler.source>17</maven.compiler.source>
<maven.compiler.target>17</maven.compiler.target>
</properties>
</project>
java
package com.cky.pojo;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
@Component
public class User {
@Value("cky")
private String name;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Override
public String toString() {
return "User{" +
"name='" + name + '\'' +
'}';
}
public User(String name) {
this.name = name;
}
public User() {
}
}
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:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
<context:component-scan base-package="com.cky.pojo"/>
</beans>
java
package com.cky.test;
import com.cky.pojo.User;
import jakarta.annotation.Resource;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:spring.xml")
public class springjunit4 {
@Autowired
private User user;
@Test
public void test(){
System.out.println(user.getName());
}
}
1.2 对junit5的支持
xml
<?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>4.0.0</modelVersion>
<groupId>com.powernode</groupId>
<artifactId>spring6-015-junit</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<!--仓库-->
<repositories>
<!--spring里程碑版本的仓库-->
<repository>
<id>repository.spring.milestone</id>
<name>Spring Milestone Repository</name>
<url>https://repo.spring.io/milestone</url>
</repository>
</repositories>
<dependencies>
<!--spring context依赖-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>6.0.0-M2</version>
</dependency>
<!--spring对junit的支持相关依赖-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>6.0.0-M2</version>
</dependency>
<!--junit5依赖-->
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter</artifactId>
<version>5.9.0</version>
<scope>test</scope>
</dependency>
</dependencies>
<properties>
<maven.compiler.source>17</maven.compiler.source>
<maven.compiler.target>17</maven.compiler.target>
</properties>
</project>
java
package com.cky.test;
import com.cky.pojo.User;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit.jupiter.SpringExtension;
@ExtendWith(SpringExtension.class)
@ContextConfiguration("classpath:spring1.xml")
public class springjunit5 {
@Autowired
private User user;
@Test
public void testUser(){
System.out.println(user.getName());
}
}
2、Spring6集成MyBatis3.5
2.1 实现步骤
● 第一步:准备数据库表
○ 使用t_act表(账户表)
● 第二步:IDEA中创建一个模块,并引入依赖
○ spring-context
○ spring-jdbc
○ mysql驱动
○ mybatis
○ mybatis-spring:mybatis提供的与spring框架集成的依赖
○ 德鲁伊连接池
○ junit
● 第三步:基于三层架构实现,所以提前创建好所有的包
○ com.powernode.bank.mapper
○ com.powernode.bank.service
○ com.powernode.bank.service.impl
○ com.powernode.bank.pojo
● 第四步:编写pojo
○ Account,属性私有化,提供公开的setter getter和toString。
● 第五步:编写mapper接口
○ AccountMapper接口,定义方法
● 第六步:编写mapper配置文件
○ 在配置文件中配置命名空间,以及每一个方法对应的sql。
● 第七步:编写service接口和service接口实现类
○ AccountService
○ AccountServiceImpl
● 第八步:编写jdbc.properties配置文件
○ 数据库连接池相关信息
● 第九步:编写mybatis-config.xml配置文件
○ 该文件可以没有,大部分的配置可以转移到spring配置文件中。
○ 如果遇到mybatis相关的系统级配置,还是需要这个文件。
● 第十步:编写spring.xml配置文件
○ 组件扫描
○ 引入外部的属性文件
○ 数据源
○ SqlSessionFactoryBean配置
■ 注入mybatis核心配置文件路径
■ 指定别名包
■ 注入数据源
○ Mapper扫描配置器
■ 指定扫描的包
○ 事务管理器DataSourceTransactionManager
■ 注入数据源
○ 启用事务注解
■ 注入事务管理器
● 第十一步:编写测试程序,并添加事务,进行测试
2.2 实现
具体的不在这里写了
主要写一下配置文件
mybatis-config.xml
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>
<settings>
<!-- 开启mybaits日志输出 这里是标准控制台输出 有助于看到sql语句-->
<setting name="logImpl" value="STDOUT_LOGGING"/>
</settings>
<!--其他都可以放在spring中写-->
</configuration>
spring.xml
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:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://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/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
<!--包扫描-->
<context:component-scan base-package="com.cky"></context:component-scan>
<!--外部属性配置文件-->
<context:property-placeholder location="jdbc.properties" />
<!--数据源-->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
<property name="driverClassName" value="${jdbc.driver}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.name}"/>
<property name="password" value="${jdbc.pwd}"/>
</bean>
<!-- sqlsessionfactorybean-->
<bean class="org.mybatis.spring.SqlSessionFactoryBean">
<!--mybatis核心配置文件路径-->
<property name="configLocation" value="mybatis-config.xml"/>
<!--注入数据源-->
<property name="dataSource" ref="dataSource"/>
<!--起别名-->
<property name="typeAliasesPackage" value="com.cky.pojo"/>
</bean>
<!--Mapper扫描器-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.cky.mapper"/>
</bean>
<!--事务管理器-->
<bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
<!--开启事务注解-->
<tx:annotation-driven transaction-manager="txManager"></tx:annotation-driven>
</beans>
jabc.properties
java
jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/test
jdbc.name=ckytest
jdbc.pwd=123456
pom
java
<?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>4.0.0</modelVersion>
<groupId>org.example</groupId>
<artifactId>demo</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<maven.compiler.source>17</maven.compiler.source>
<maven.compiler.target>17</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>6.1.5</version>
</dependency>
<!--log4j2的依赖-->
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.19.0</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-slf4j2-impl</artifactId>
<version>2.19.0</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.13.2</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>
测试
java
package com.cky.test;
import com.cky.service.AccountService;
import com.cky.service.impl.AccountServiceimpl;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class test {
@Test
public void test1(){
ApplicationContext applicationContext=new ClassPathXmlApplicationContext("spring.xml");
AccountService accountservice = applicationContext.getBean("accountservice", AccountService.class);
accountservice.transfer("1001","1022",10000.0);
}
}
注意:由于service 有接口 所以这里必须用service 对象 不能用实现类对象,因为有接口,底层用cglib来实现动态代理。