1. Create a Maven project import dependency
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.example</groupId>
<artifactId>spring-jdbc</artifactId>
<version>1.0 the SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib</artifactId>
<version>3.3.0</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.8.13</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.0.5. RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>5.0.5. RELEASE</version>
</dependency>
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1.2</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.0.5. RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>5.0.5. RELEASE</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.35</version>
</dependency>
</dependencies>
</project>
Copy the code2. Write the Account entity class and create the database table
2.1 Creating an Account Entity Class
package com.abchina.domain;
public class Account {
private String name;
private double money;
public String getName(a) {
return name;
}
public void setName(String name) {
this.name = name;
}
public double getMoney(a) {
return money;
}
public void setMoney(double money) {
this.money = money;
}
@Override
public String toString(a) {
return "Account{" +
"name='" + name + '\' ' +
", money=" + money +
'} '; }}Copy the codeTable 2.2 built
/* Navicat Premium Data Transfer Source Server : localhost_3306 Source Server Type : MySQL Source Server Version : 50719 Source Host : localhost:3306 Source Schema : test Target Server Type : MySQL Target Server Version : 50719 File Encoding : 65001 Date: 25/04/2021 14:34:22 */
SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;
-- ----------------------------
-- Table structure for account
-- ----------------------------
DROP TABLE IF EXISTS `account`;
CREATE TABLE `account` (
`name` varchar(50) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
`money` double NULL DEFAULT NULL
) ENGINE = InnoDB CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;
SET FOREIGN_KEY_CHECKS = 1;
Copy the code3. Write the Spring core configuration file and configure the data source and jdbcTemplate
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:con="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd ">
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="com.mysql.jdbc.Driver"/>
<property name="jdbcUrl" value="jdbc:mysql://localhost:3306/test"/>
<property name="user" value="root"/>
<property name="password" value="root"/>
</bean>
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="dataSource"/>
</bean>
</beans>
Copy the code4. Write test classes
package com.abchina.test;
import com.abchina.domain.Account;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.jdbc.core.BeanPropertyRowMapper;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import javax.annotation.Resource;
import java.util.List;
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:applicationContext.xml")
public class TestJdbc {
@Resource
private JdbcTemplate jdbcTemplate;
@Test
public void testInsert(a) {
jdbcTemplate.update("insert into account values (? ,?) "."zhangsan".1000);
}
@Test
public void testUpdate(a) {
jdbcTemplate.update("update account set money=? where name=?".2000."zhangsan");
}
@Test
public void testQueryAll(a) {
List<Account> accountList = jdbcTemplate.query("select * from account".new BeanPropertyRowMapper<Account>(Account.class));
for(Account account : accountList) { System.out.println(account); }}@Test
public void delete(a) {
int ret = jdbcTemplate.update("delete from account where name=?"."zhangsan");
}
@Test
public void QueryOne(a) {
List<Account> accountList = jdbcTemplate.query("select * from account where name=?".new BeanPropertyRowMapper<Account>(Account.class), "zhangsan");
for(Account account : accountList) { System.out.println(account); }}@Test
public void testAccount(a) {
Integer sumCount = jdbcTemplate.queryForObject("select count(*) from account", Integer.class); System.out.println(sumCount); }}Copy the code