spring jdbctemplate的用法小结

<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-jdbc</artifactId>
  <version>5.1.9.RELEASE</version>
</dependency>

public JdbcTemplate() {
}
public JdbcTemplate(DataSource dataSource) {
    setDataSource(dataSource);
    afterPropertiesSet();
}
public JdbcTemplate(DataSource dataSource, boolean lazyInit) {
    setDataSource(dataSource);
    setLazyInit(lazyInit);
    afterPropertiesSet();
}

JdbcTemplate jdbcTemplate = new JdbcTemplate(ds);

<!-- 配置数据源 -->
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    <property name="driverClassName" value="${jdbc.driverClass}"></property>
    <property name="url" value="${jdbc.url}"></property>
    <property name="username" value="${jdbc.username}"></property>
    <property name="password" value="${jdbc.password}"></property>
</bean>
<!--加载属性文件-->
<context:property-placeholder location="classpath:properties/jdbc.properties"/>

<context:property-placeholder location="classpath:props/db.properties"/>
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
    <property name="user" value="${jdbc.username}"></property>
    <property name="password" value="${jdbc.password}"></property>
    <property name="driverClass" value="${jdbc.driverClass}"></property>
    <property name="jdbcUrl" value="${jdbc.url}"></property>
</bean>

jdbc.driverClass=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/mysite?useSSL=false&serverTimezone=UTC&characterEncoding=utf8
jdbc.username=root
jdbc.password=3145tj

<!--增删改-->
int update(String sql)
int update(String sql,Object... args)
int update(String sql,Object[] args)
<!--query-->
public <T> List<T> query(String sql, RowMapper<T> rowMapper)
queryForMap
queryForList
queryForObject