1.1 Fuentes de datos comunes
Al usar JdbcTemplate, debe configurar un objeto de fuente de datos para completar las operaciones de la base de datos
#常见的数据源:
内置数据源:
org.springframework.jdbc.datasource.DriverManagerDataSource
c3p0数据源:
com.mchange.v2.c3p0.ComboPooledDataSource
dbcp数据源:
org.apache.commons.dbcp.BasicDataSource
druid数据源:
com.alibaba.druid.pool.DruidDataSource
1.2 Fuente de datos incorporada
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">
<!--配置JdbcTemplate-->
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<!--注入数据源对象-->
<property name="dataSource" ref="dataSource"></property>
</bean>
<!--配置数据源对象-->
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<!--注入连接数据库的四个基本要素-->
<property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
<property name="url" value="jdbc:mysql://127.0.0.1:3306/1_spring"></property>
<property name="username" value="root"></property>
<property name="password" value="admin"></property>
</bean>
</beans>
1.3 Integrar c3p0
1.3.1 Estructura del proyecto
1.3.2 Configurar pom.xml
<!--c3p0版本-->
<c3p0.version>0.9.5</c3p0.version>
<!--c3p0依赖-->
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>${c3p0.version}</version>
</dependency>
1.3.3 Configurar bean.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">
<!--配置JdbcTemplate-->
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<!--注入数据源对象-->
<property name="dataSource" ref="dataSource"></property>
</bean>
<!--配置数据源(c3p0)对象-->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<!--注入连接数据库-->
<property name="driverClass" value="com.mysql.jdbc.Driver"></property>
<property name="jdbcUrl" value="jdbc:mysql://127.0.0.1:3306/spring"></property>
<property name="user" value="root"></property>
<property name="password" value="root"></property>
</bean>
</beans>
1.3.4 Resultados de la ejecución
1.4 Integrar la fuente de datos del druida
1.4.1 Estructura del proyecto
1.4.2 Configurar pom.xml
<!--druid版本-->
<druid.version>1.0.29</druid.version>
<!--druid依赖-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>${druid.version}</version>
</dependency>
1.4.3 Configurar bean.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"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">
<!--配置JdbcTemplate-->
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<!--注入数据源对象-->
<property name="dataSource" ref="dataSource"></property>
</bean>
<!--配置数据源对象(druid)-->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
<!--注入连接数据库-->
<property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
<property name="url" value="jdbc:mysql://127.0.0.1:3306/spring"></property>
<property name="username" value="root"></property>
<property name="password" value="root"></property>
</bean>
</beans>