【Spring】【MyBatis】Spring整合MyBatis01

• 这是一个Spring整合MyBatis的第一次尝试，对于文件的命名和存放位置，也许有些不太合理，请见谅
• 需要数据库的请查阅【Mybatis】学习笔记01：连接数据库，实现增删改 - 萌狼蓝天
• 本文档使用的SQL语句是MyBatis动态SQL语句（Choose）
• 参考文档

项目创建

配置pom.xml

<dependencies>
<!--    数据库驱动:MySQL-->
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>8.0.28</version>
    </dependency>
<!--    数据库框架:mybatis-->
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis</artifactId>
        <version>3.5.9</version>
    </dependency>
<!--    Spring框架:Spring-->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>5.3.18</version>
    </dependency>
<!--    Spring JDBC-->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-jdbc</artifactId>
        <version>5.3.17</version>
    </dependency>
<!--    Spring整合Mybatis-->
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis-spring</artifactId>
        <version>2.0.7</version>
    </dependency>
<!--    Spring AOP框架-->
    <dependency>
        <groupId>org.aspectj</groupId>
        <artifactId>aspectjweaver</artifactId>
        <version>1.9.9</version>
    </dependency>
<!--    日志：log4g-->
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>1.2.12</version>
    </dependency>
<!--    测试：junit-->
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.13.2</version>
    </dependency><!--    分页插件-->
    <!-- https://mvnrepository.com/artifact/com.github.pagehelper/pagehelper -->
    <dependency>
        <groupId>com.github.pagehelper</groupId>
        <artifactId>pagehelper</artifactId>
        <version>5.3.0</version>
    </dependency>
    <!--        Json序列化工具：fastJson-->
    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>fastjson</artifactId>
        <version>2.0.1</version>
    </dependency>
</dependencies>

连接数据库

快速创建实例化对象

选择目录

创建完毕后需要去修改它们的包名

配置

目录

database.properties

jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/edu_smbms
jdbc.username=edu_smbms
jdbc.password=**********

mybatis-config.xml

<?xml version="1.0" encoding="UTF-8" ?><!--XML文件声明，版本号，编码-->
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd"><!--该XML文件约束是dtd文件规则，和Spring中的约束不一样，但是功能一样-->
<configuration>
    <settings>
<!--    开启Log4j日志-->
        <setting name="logImpl" value="LOG4J"/>
<!--    开启延迟加载-->
        <setting name="lazyLoadingEnabled" value="true"/>
    </settings>
    <typeAliases>
<!--        <typeAlias type="" alias=""/>-->
        <package name="cc.mllt.pojo"/><!--如果jdbc包下有Link类，则别名为link，不区分大小写-->
    </typeAliases>
    <mappers>
        <package name="cc.mllt.mapper"/>
    </mappers>
</configuration>

Spring-dao.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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">
    <!--引入数据库配置文件-->
    <context:property-placeholder location="classpath:database.properties"/>
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="${jdbc.driver}" />
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
    </bean>
    <!--配置sqlSessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!--指定数据源-->
        <property name="dataSource" ref="dataSource"/>
        <!--指定Mybatis全局配置文件-->
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
<!--        <property name="mapperLocations" value="classpath:cc/mllt/mapper/*.xml"/>-->
    </bean>
    <!--配置mapper扫描,动态实现了mapper接口可以注册到spring容器中  -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        <!--  要扫描的mapper  -->
        <property name="basePackage" value="cc.mllt.mapper"/>
    </bean>
    <!--sqlSession-->
    <bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
        <!--只能使用构造器注入SQLSessionFactory。因为它没有set方法-->
        <constructor-arg index="0" ref="sqlSessionFactory"/>
    </bean>

</beans>

log4j.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">
    <appender name="STDOUT" class="org.apache.log4j.ConsoleAppender">
        <param name="Encoding" value="UTF-8" />
        <layout class="org.apache.log4j.PatternLayout">
            <param name="ConversionPattern" value="%-5p %d{MM-dd HH:mm:ss,SSS} %m (%F:%L) \n" />
        </layout>
    </appender>
    <logger name="java.sql">
        <level value="debug" />
    </logger>
    <logger name="org.apache.ibatis">
        <level value="info" />
    </logger>
    <root>
        <level value="debug" />
        <appender-ref ref="STDOUT" />
    </root>
</log4j:configuration>

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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">
    <!--启用spring的一些annotation -->
    <context:annotation-config/>
    <import resource="spring-dao.xml"/>
<!--    <import resource="spring-mvc.xml"/>-->
    <bean id="providerMapperBean" class="cc.mllt.impl.ProviderImpl">
        <property name="sqlSessionTemplate" ref="sqlSession"/>
    </bean>
</beans>

接口、映射、实现类

ProviderMapper.java

package cc.mllt.mapper;

import cc.mllt.pojo.SmbmsProvider;
import org.apache.ibatis.annotations.Param;

import java.util.List;

public interface ProviderMapper {
    /**
     * 查询供应商信息
     * @param way 查询方式。1：根据供应商公司名称模糊查询 2：根据供应商负责人名字模糊查询 3：根据电话模糊查询
     * @param npc 查询的关键字
     * @return Provider
     */
    public List<SmbmsProvider> getProviderByNCP(@Param("way") int way, @Param("npc") String npc);
}

ProviderMapper.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="cc.mllt.mapper.ProviderMapper">
<!--    public List<SmbmsProvider> getProviderByNCP(@Param("way") int way,@Param("npc") String npc);-->
    <select id="getProviderByNCP" resultType="SmbmsProvider">
        select * from smbms_provider
        <choose>
            <when test="way==1">
                where proName like concat('%',#{npc},'%')
            </when>
            <when test="way==2">
                where proContact like concat('%',#{npc},'%')
            </when>
            <when test="way==3">
                where proPhone like concat('%',#{npc},'%')
            </when>
            <otherwise>
                where proName like #concat('%',#{npc},'%')
            </otherwise>
        </choose>
    </select>
</mapper>

ProviderImpl.java

package cc.mllt.impl;

import cc.mllt.mapper.ProviderMapper;
import cc.mllt.pojo.SmbmsProvider;
import org.mybatis.spring.SqlSessionTemplate;

import java.util.List;
//实现类
public class ProviderImpl implements ProviderMapper {
    private SqlSessionTemplate sqlSessionTemplate;
    public void setSqlSessionTemplate(SqlSessionTemplate sqlSessionTemplate){
        this.sqlSessionTemplate=sqlSessionTemplate;
    }
    @Override
    public List<SmbmsProvider> getProviderByNCP(int way, String npc) {
        ProviderMapper providerMapper = sqlSessionTemplate.getMapper(ProviderMapper.class);
        return providerMapper.getProviderByNCP(way,npc);
    }
}

测试

@Test
    public void getProviderByNCPTest(){
        ClassPathXmlApplicationContext context= new ClassPathXmlApplicationContext("applicationContext.xml");
        ProviderMapper providerMapper = context.getBean("providerMapperBean",ProviderMapper.class);
        List<SmbmsProvider> result = providerMapper.getProviderByNCP(2,"王");
        for(SmbmsProvider smbmsProvider:result){
            System.out.println(smbmsProvider);
        }
    }

C:\Users\xrilang\.jdks\openjdk-17.0.2\bin\java.exe -ea -Didea.test.cyclic.buffer.size=1048576 -javaagent:D:\SoftwareInstall\JetBrains\Toolbox\apps\IDEA-U\ch-1\221.5080.210\lib\idea_rt.jar=8953:D:\SoftwareInstall\JetBrains\Toolbox\apps\IDEA-U\ch-1\221.5080.210\bin -Dfile.encoding=UTF-8 -classpath D:\SoftwareInstall\JetBrains\Toolbox\apps\IDEA-U\ch-1\221.5080.210\lib\idea_rt.jar;D:\SoftwareInstall\JetBrains\Toolbox\apps\IDEA-U\ch-1\221.5080.210\plugins\junit\lib\junit5-rt.jar;D:\SoftwareInstall\JetBrains\Toolbox\apps\IDEA-U\ch-1\221.5080.210\plugins\junit\lib\junit-rt.jar;N:\JavaEE\MyStudyCode\pra-mybatis-smbms\target\test-classes;N:\JavaEE\MyStudyCode\pra-mybatis-smbms\target\classes;A:\100_env\framework\java\MyMavenJarLib\mysql\mysql-connector-java\8.0.28\mysql-connector-java-8.0.28.jar;A:\100_env\framework\java\MyMavenJarLib\com\google\protobuf\protobuf-java\3.11.4\protobuf-java-3.11.4.jar;A:\100_env\framework\java\MyMavenJarLib\org\mybatis\mybatis\3.5.9\mybatis-3.5.9.jar;A:\100_env\framework\java\MyMavenJarLib\org\springframework\spring-webmvc\5.3.18\spring-webmvc-5.3.18.jar;A:\100_env\framework\java\MyMavenJarLib\org\springframework\spring-aop\5.3.18\spring-aop-5.3.18.jar;A:\100_env\framework\java\MyMavenJarLib\org\springframework\spring-beans\5.3.18\spring-beans-5.3.18.jar;A:\100_env\framework\java\MyMavenJarLib\org\springframework\spring-context\5.3.18\spring-context-5.3.18.jar;A:\100_env\framework\java\MyMavenJarLib\org\springframework\spring-core\5.3.18\spring-core-5.3.18.jar;A:\100_env\framework\java\MyMavenJarLib\org\springframework\spring-jcl\5.3.18\spring-jcl-5.3.18.jar;A:\100_env\framework\java\MyMavenJarLib\org\springframework\spring-expression\5.3.18\spring-expression-5.3.18.jar;A:\100_env\framework\java\MyMavenJarLib\org\springframework\spring-web\5.3.18\spring-web-5.3.18.jar;A:\100_env\framework\java\MyMavenJarLib\org\springframework\spring-jdbc\5.3.17\spring-jdbc-5.3.17.jar;A:\100_env\framework\java\MyMavenJarLib\org\springframework\spring-tx\5.3.17\spring-tx-5.3.17.jar;A:\100_env\framework\java\MyMavenJarLib\org\mybatis\mybatis-spring\2.0.7\mybatis-spring-2.0.7.jar;A:\100_env\framework\java\MyMavenJarLib\org\aspectj\aspectjweaver\1.9.9\aspectjweaver-1.9.9.jar;A:\100_env\framework\java\MyMavenJarLib\log4j\log4j\1.2.12\log4j-1.2.12.jar;A:\100_env\framework\java\MyMavenJarLib\junit\junit\4.13.2\junit-4.13.2.jar;A:\100_env\framework\java\MyMavenJarLib\org\hamcrest\hamcrest-core\1.3\hamcrest-core-1.3.jar;A:\100_env\framework\java\MyMavenJarLib\com\github\pagehelper\pagehelper\5.3.0\pagehelper-5.3.0.jar;A:\100_env\framework\java\MyMavenJarLib\com\github\jsqlparser\jsqlparser\4.2\jsqlparser-4.2.jar;A:\100_env\framework\java\MyMavenJarLib\com\alibaba\fastjson\2.0.1\fastjson-2.0.1.jar;A:\100_env\framework\java\MyMavenJarLib\com\alibaba\fastjson2\fastjson2-extension\2.0.1\fastjson2-extension-2.0.1.jar;A:\100_env\framework\java\MyMavenJarLib\com\alibaba\fastjson2\fastjson2\2.0.1\fastjson2-2.0.1.jar com.intellij.rt.junit.JUnitStarter -ideVersion5 -junit4 MappperProviderTest,getProviderByNCPTest
DEBUG 04-26 19:01:09,419 Creating a new SqlSession (Logger.java:49)
DEBUG 04-26 19:01:09,423 SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@2e2ff723] was not registered for synchronization because synchronization is not active (Logger.java:49)
DEBUG 04-26 19:01:10,882 JDBC Connection [com.mysql.cj.jdbc.ConnectionImpl@55b5e331] will not be managed by Spring (Logger.java:49)
DEBUG 04-26 19:01:10,905 ==>  Preparing: select * from smbms_provider where proContact like concat('%',?,'%') (BaseJdbcLogger.java:137)
DEBUG 04-26 19:01:10,937 ==> Parameters: 王(String) (BaseJdbcLogger.java:137)
DEBUG 04-26 19:01:11,054 <==      Total: 3 (BaseJdbcLogger.java:137)
DEBUG 04-26 19:01:11,055 Closing non transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@2e2ff723] (Logger.java:49)
SmbmsProvider{id=2, proCode='HB_GYS001', proName='石家庄帅益食品贸易有限公司', proDesc='长期合作伙伴，主营产品:饮料、水饮料、植物蛋白饮料、休闲食品、果汁饮料、功能饮料等', proContact='王军', proPhone='13309094212', proAddress='河北省石家庄新华区', proFax='0311-67738876', createdBy=1, creationDate=2016-04-13 04:20:40.0, modifyDate=null, modifyBy=0}
SmbmsProvider{id=7, proCode='BJ_GYS003', proName='北京国粮食用油有限公司', proDesc='初次合作伙伴，主营产品：花生油、大豆油、小磨油等', proContact='王驰', proPhone='13344441135', proAddress='北京大兴青云店开发区', proFax='010-588134111', createdBy=1, creationDate=2016-04-13 00:00:00.0, modifyDate=null, modifyBy=0}
SmbmsProvider{id=15, proCode='ZJ_GYS002', proName='乐摆日用品厂', proDesc='长期合作伙伴，主营产品：各种中、高档塑料杯，塑料乐扣水杯（密封杯）、保鲜杯（保鲜盒）、广告杯、礼品杯', proContact='王世杰', proPhone='13212331567', proAddress='浙江省金华市义乌市义东路', proFax='0579-34452321', createdBy=1, creationDate=2016-08-22 10:01:30.0, modifyDate=null, modifyBy=0}

进程已结束,退出代码0