版权声明:随意转载。 https://blog.csdn.net/dengjili/article/details/83903797
JdbcTemplate是spring中的jdbc操作,有必要了解一下,不一定要使用
配置文件
<?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-4.3.xsd">
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="com.mysql.cj.jdbc.Driver" />
<property name="url" value="jdbc:mysql://127.0.0.1:3306/test" />
<property name="username" value="root" />
<property name="password" value="root" />
</bean>
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="dataSource"/>
</bean>
</beans>
demo
public class DemoJdbcTemplate {
private static final Logger logger = LoggerFactory.getLogger(RunMainDbcp.class);
public static void main(String[] args) {
ApplicationContext context = new ClassPathXmlApplicationContext("day5/spring-config.xml");
JdbcTemplate jdbcTemplate = (JdbcTemplate) context.getBean("jdbcTemplate");
logger.debug(jdbcTemplate.toString());
logger.debug("增");
// insertRole(jdbcTemplate);
logger.debug("删");
// deleteRole(jdbcTemplate);
logger.debug("改");
// updateRole(jdbcTemplate);
logger.debug("查");
List<Role> role = getRole(jdbcTemplate);
logger.debug("{}", role);
}
private static List<Role> getRole(JdbcTemplate jdbcTemplate) {
String sql = "sELECT * from role where name like concat('%', ?, '%')";
Object[] args = {"wawa"};
List<Role> resultList = jdbcTemplate.query(sql, args, (rs, rownum) -> {
Role role = new Role();
role.setId(rs.getInt("id"));
role.setName(rs.getString("name"));
role.setDesc(rs.getString("desc"));
return role;
});
return resultList;
}
private static void updateRole(JdbcTemplate jdbcTemplate) {
String sql = "update role set name = ?, `desc` = ? where id = ?";
Object[] args = {"wawa", "鸡接口", -1};
jdbcTemplate.update(sql, args);
}
private static void deleteRole(JdbcTemplate jdbcTemplate) {
String sql = "delete from role where id = ?";
Object[] args = {-1};
jdbcTemplate.update(sql, args);
}
private static void insertRole(JdbcTemplate jdbcTemplate) {
String sql = "insert into role(id, name, `desc`) values(?, ?, ?)";
Object[] args = {-1, "hehe", "掌門"};
jdbcTemplate.update(sql, args);
}
}