Spring连接Mysql

1.导包

• 导入Spring基础包

• 导入操作数据库、连接数据库、测试需要的包

代码：
<!-- https://mvnrepository.com/artifact/org.springframework/spring-test -->
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-test</artifactId>
    <version>5.2.13.RELEASE</version>
    <scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/commons-dbutils/commons-dbutils -->
<dependency>
    <groupId>commons-dbutils</groupId>
    <artifactId>commons-dbutils</artifactId>
    <version>1.7</version>
</dependency>
<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>8.0.23</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.mchange/c3p0 -->
<dependency>
    <groupId>com.mchange</groupId>
    <artifactId>c3p0</artifactId>
    <version>0.9.5.5</version>
</dependency>
<!-- https://mvnrepository.com/artifact/junit/junit -->
<dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.13.2</version>
    <scope>test</scope>
</dependency>

2.配置核心文件——main/resources——applicationContext.xml

自动扫包

代码：

<?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:util="http://www.springframework.org/schema/util"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="
        http://www.springframework.org/schema/beans
        https://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/util
        https://www.springframework.org/schema/util/spring-util.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
       ">

    <!-- bean definitions here -->
    <context:component-scan base-package="dao"/>
    <context:component-scan base-package="services"/>
    <context:component-scan base-package="utils"/>

</beans>

3.配置数据源——main/resources——applicationContext.xml

代码：

<!--配置QueryRunner-->
<bean id="queryRunner" class="org.apache.commons.dbutils.QueryRunner" scope="prototype"/>
<!-- 配置数据源 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
    <!--连接数据库的必备信息-->
    <property name="driverClass" value="com.mysql.jdbc.Driver"></property>
    <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/spring_aop"></property>
    <property name="user" value="root"></property>
    <property name="password" value="root"></property>
</bean>