新建maven项目
导入依赖
<?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>com.shrimpking</groupId>
<artifactId>springtest13</artifactId>
<packaging>pom</packaging>
<version>1.0-SNAPSHOT</version>
<modules>
<module>p01</module>
<module>p02</module>
<module>p03</module>
</modules>
<dependencies>
<dependency>
<groupId>aopalliance</groupId>
<artifactId>aopalliance</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.3.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>4.3.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.3.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.2</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version> 1.2.17</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.3</version>
</dependency>
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib</artifactId>
<version>3.2.4</version>
</dependency>
<dependency>
<groupId>ognl</groupId>
<artifactId>ognl</artifactId>
<version>3.1.12</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.22</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.1</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.47</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-dbcp2</artifactId>
<version>2.1.1</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
</dependencies>
<build>
<resources>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>false</filtering>
</resource>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>false</filtering>
</resource>
</resources>
</build>
</project>
数据库
drop table if EXISTS a_user;
create table a_user(
id int(32) auto_increment primary key,
username varchar(50),
jobs varchar(50),
phone varchar(16)
);
insert into a_user values(1,'zhang','teacher','133');
insert into a_user values(2,'li','worker','188');
insert into a_user values(3,'wang','doctor','139');
User.java
package com.shrimpking.pojo;
/**
* Created by IntelliJ IDEA.
*
* @Author : Shrimpking
* @create 2023/7/13 18:48
*/
public class User
{
private Integer id;
private String username;
private String jobs;
private String phone;
public Integer getId()
{
return id;
}
public void setId(Integer id)
{
this.id = id;
}
public String getUsername()
{
return username;
}
public void setUsername(String username)
{
this.username = username;
}
public String getJobs()
{
return jobs;
}
public void setJobs(String jobs)
{
this.jobs = jobs;
}
public String getPhone()
{
return phone;
}
public void setPhone(String phone)
{
this.phone = phone;
}
@Override
public String toString()
{
return "User{" + "id=" + id + ", username='" + username + '\'' + ", jobs='" + jobs + '\'' + ", phone='" + phone + '\'' + '}';
}
}
UserMapper.java
package com.shrimpking.mapper;
import com.shrimpking.pojo.User;
import java.util.List;
/**
* Created by IntelliJ IDEA.
*
* @Author : Shrimpking
* @create 2023/7/13 18:49
*/
public interface UserMapper
{
//根据用户名查询
List<User> findUserByName(String name);
}
UserMapper.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.shrimpking.mapper.UserMapper">
<select id="findUserByName" resultType="com.shrimpking.pojo.User">
select id,username,jobs,phone from a_user
where username like concat('%',#{username},'%')
</select>
</mapper>
applicationContext.xml
<?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" xmlns:tx="http://www.springframework.org/schema/tx"
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/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
<!-- 读取db.properties -->
<context:property-placeholder location="classpath:db.properties"/>
<!-- 配置数据源 -->
<bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource">
<property name="driverClassName" value="${jdbc.driver}"/>
<property name="url" value="${jdbc.rul}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
<!-- 最大连接数 -->
<property name="maxTotal" value="${jdbc.maxTotal}"/>
<!-- 最大空闲数 -->
<property name="maxIdle" value="${jdbc.maxIdle}"/>
<!-- 初始化连接数 -->
<property name="initialSize" value="${jdbc.initialSize}"/>
</bean>
<!--事务管理器-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
<!-- 注册事务管理器驱动,开启事务注解 -->
<tx:annotation-driven transaction-manager="transactionManager"/>
<!--配置mybatis工厂-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="configLocation" value="classpath:mybatis-config.xml"/>
</bean>
<!--mapper代理开发,基于MapperScannerConfigurer-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.shrimpking.mapper"/>
</bean>
</beans>
db.properties
jdbc.driver=com.mysql.jdbc.Driver
jdbc.rul=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimeZone=UTC
jdbc.username=root
jdbc.password=mysql123
jdbc.maxTotal=30
jdbc.maxIdle=10
jdbc.initialSize=5
log4j.properties
log4j.rootLogger=ERROR,stdout
log4j.logger.com.shrimpking=DEBUG
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n
mybatis-config.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<!-- 起别名 -->
<typeAliases>
<package name="com.shrimpking.pojo"/>
</typeAliases>
<!-- <mappers>-->
<!-- <package name="com.shrimpking.mapper"/>-->
<!-- </mappers>-->
</configuration>
MyTest.java
import com.shrimpking.mapper.UserMapper;
import com.shrimpking.pojo.User;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import java.util.List;
/**
* Created by IntelliJ IDEA.
*
* @Author : Shrimpking
* @create 2023/7/13 18:54
*/
public class MyTest
{
@Test
public void test()
{
ApplicationContext context
= new ClassPathXmlApplicationContext("applicationContext.xml");
UserMapper userMapper = context.getBean("userMapper", UserMapper.class);
List<User> users = userMapper.findUserByName("zh");
for (User user : users)
{
System.out.println(user);
}
}
}