javaee spring jdbcTemplate的使用

依赖

<?xml version="1.0" encoding="UTF-8"?><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>testspring02</artifactId><version>1.0-SNAPSHOT</version><packaging>war</packaging><name>testspring02 Maven Webapp</name><!-- FIXME change it to the project's website --><url>http://www.example.com</url><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><maven.compiler.source>1.7</maven.compiler.source><maven.compiler.target>1.7</maven.compiler.target></properties><dependencies><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.11</version><scope>test</scope></dependency><!-- 导入spring的核心jar包 --><dependency><groupId>org.springframework</groupId><artifactId>spring-core</artifactId><version>4.3.18.RELEASE</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-beans</artifactId><version>4.3.18.RELEASE</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>4.3.18.RELEASE</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-context-support</artifactId><version>4.3.18.RELEASE</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-expression</artifactId><version>4.3.18.RELEASE</version></dependency><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>5.1.37</version></dependency><dependency><groupId>com.mchange</groupId><artifactId>c3p0</artifactId><version>0.9.5.2</version></dependency><!-- 配置的 spring-jdbc --><dependency><groupId>org.springframework</groupId><artifactId>spring-jdbc</artifactId><version>4.3.18.RELEASE</version></dependency></dependencies><build><finalName>testspring02</finalName><pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) --><plugins><plugin><artifactId>maven-clean-plugin</artifactId><version>3.1.0</version></plugin><!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging --><plugin><artifactId>maven-resources-plugin</artifactId><version>3.0.2</version></plugin><plugin><artifactId>maven-compiler-plugin</artifactId><version>3.8.0</version></plugin><plugin><artifactId>maven-surefire-plugin</artifactId><version>2.22.1</version></plugin><plugin><artifactId>maven-war-plugin</artifactId><version>3.2.2</version></plugin><plugin><artifactId>maven-install-plugin</artifactId><version>2.5.2</version></plugin><plugin><artifactId>maven-deploy-plugin</artifactId><version>2.8.2</version></plugin></plugins></pluginManagement></build>
</project>

测试类

package com.test.springJdbc;import com.mchange.v2.c3p0.ComboPooledDataSource;
import org.junit.Test;
import org.springframework.jdbc.core.JdbcTemplate;import java.beans.PropertyVetoException;/*** @description:* @projectName:testspring2* @see:com.test.springJdbc* @author:123* @createTime:2023/8/28 19:33*/
public class TestJdbcTemplate {@Testpublic void test(){//1.创建一个连接池ComboPooledDataSource pooledDataSource=new ComboPooledDataSource();try {pooledDataSource.setDriverClass("com.mysql.jdbc.Driver");pooledDataSource.setJdbcUrl("jdbc:mysql://localhost:3306/itstar");pooledDataSource.setUser("itstar");pooledDataSource.setPassword("yyy123456");//2.创建JdbcTemplate对象JdbcTemplate jdbcTemplate=new JdbcTemplate(pooledDataSource);//3.执行sqlString sql="insert into user values(null,?,?)";jdbcTemplate.update(sql,"daimenglaoshi","123");} catch (PropertyVetoException e) {e.printStackTrace();}}
}

用spring管理jdbc相关类

spring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"xmlns:context="http://www.springframework.org/schema/context"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"><!-- 开启注解--><context:component-scan base-package="com.test" /><!-- 导入db.properties --><context:property-placeholder location="db.properties" /><!-- 创建数据源--><bean id="comboPooledDataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"><property name="driverClass" value="${driverClass}" /><property name="jdbcUrl" value="${jdbcUrl}" /><property name="user" value="${user}" /><property name="password" value="${password}" /></bean><!--创建JdbcTemplate对象 --><bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate"><constructor-arg name="dataSource" ref="comboPooledDataSource" /></bean></beans>

测试类

package com.test.dao.impl;import com.test.dao.IUsersDao;
import com.test.pojo.Users;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Component;/*** @description:* @projectName:testspring2* @see:com.test.dao.impl* @author:杨钧博* @createTime:2023/8/28 21:56*/
@Component
public class UsersDao implements IUsersDao {//注入jdbcTemplate对象@Autowiredprivate JdbcTemplate jdbcTemplate;@Overridepublic void add(Users user) {String sql = "insert into users values(null,?,?)";jdbcTemplate.update(sql, user.getName(), user.getPassword());}
}

package com.test.springJdbc;import com.test.dao.IUsersDao;
import com.test.pojo.Users;
import org.junit.Test;
import org.springframework.context.support.ClassPathXmlApplicationContext;import java.util.List;public class TestUsersDao {@Testpublic void test(){ClassPathXmlApplicationContext applicationContext=new ClassPathXmlApplicationContext("applicationContext.xml");IUsersDao usersDao=  applicationContext.getBean("usersDao",IUsersDao.class);Users user=new Users("xiaowanglaoshi","123");usersDao.add(user);}}