Spring JDBC配置与使用的实现

create database mybatis_demo; 

use mybatis_demo;

CREATE TABLE `user` (
`id` int(11) NOT NULL auto_increment,
`username` varchar(32) NOT NULL COMMENT '用户名称',
`birthday` datetime default NULL COMMENT '生日',
`sex` char(1) default NULL COMMENT '性别',
`address` varchar(256) default NULL COMMENT '地址',
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

insert into `user`(`id`,`username`,`birthday`,`sex`,`address`) values (1,'老王','2018-02-27
17:47:08','男','北京'),(2,'熊大','2018-03-02 15:09:37','女','上海'),(3,'熊二','2018-03-04
11:34:34','女','深圳'),(4,'光头强','2018-03-04 12:04:06','男','广州');

<dependencies>
  <dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.11</version>
    <scope>test</scope>
  </dependency>

  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-core</artifactId>
    <version>5.2.7.RELEASE</version>
  </dependency>

  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-beans</artifactId>
    <version>5.2.7.RELEASE</version>
  </dependency>

  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-context</artifactId>
    <version>5.2.7.RELEASE</version>
  </dependency>

  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-context-support</artifactId>
    <version>5.2.7.RELEASE</version>
  </dependency>
  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-expression</artifactId>
    <version>5.2.7.RELEASE</version>
  </dependency>

  <dependency>
    <groupId>commons-logging</groupId>
    <artifactId>commons-logging</artifactId>
    <version>1.2</version>
  </dependency>
  <dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>8.0.20</version>
  </dependency>
  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-jdbc</artifactId>
    <version>5.2.7.RELEASE</version>
  </dependency>
  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-tx</artifactId>
    <version>5.2.7.RELEASE</version>
  </dependency>
  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-aop</artifactId>
    <version>5.2.7.RELEASE</version>
  </dependency>
</dependencies>

public class User {
    private Integer id;
    private String username;
    private Date birthday;
    private String sex;
    private String address;
    //get  set方法
    
 }

 <?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">



    <!--配置连接DriverManagerDataSource -->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/mybatis_demo"/>
        <property name="username" value="root"/>
        <property name="password" value="2020"/>
    </bean>

    <!-- 配置jdbcTemplate -->
    <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
        <property name="dataSource"  ref="dataSource"></property>
    </bean>
</beans>

import com.qcby.entity.User;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.jdbc.core.BeanPropertyRowMapper;
import org.springframework.jdbc.core.JdbcTemplate;

import java.util.List;

public class SpringTest {
    ApplicationContext ctx=new ClassPathXmlApplicationContext("Application.xml");;
    JdbcTemplate jdbcTemplate= (JdbcTemplate) ctx.getBean("jdbcTemplate");

    @Test
    public void testInsert(){
        String sql="insert into user(username,address) values('李连杰','上海')";
        jdbcTemplate.execute(sql);
    }

    @Test
    public void testUpdate(){
        String sql="update user set username='稳杰',address='南海' where id=?";
        int res=jdbcTemplate.update(sql,2);
        System.out.println(res);
    }

    @Test
    public void testDelete(){
        String sql="delete from user where id=?";
        int res=jdbcTemplate.update(sql,18);
        System.out.println(res);
    }

    //查询列表
    @Test
    public void testQueryList(){
        String sql = "select * from user where address like '%京%'";
        List<User> userList= (List<User>) jdbcTemplate.query(sql,new BeanPropertyRowMapper<>(User.class));
        System.out.println("查询List: ");
        for (User user : userList) {
            System.out.println(user);
        }
        System.out.println("数量: "+userList.size());
    }
}