项目整体结构：
1.pow.xml
<?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>groupId</groupId>
<artifactId>mk_mybatis</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<server.port>8080</server.port>
<java-version>1.8</java-version>
<springframework-version>4.3.7.RELEASE</springframework-version>
<mysql-version>5.1.45</mysql-version>
<druid-version>1.0.28</druid-version>
<commons-lang-version>2.6</commons-lang-version>
<slf4j-version>1.7.19</slf4j-version>
<log4j-version>1.2.17</log4j-version>
<fastjson-version>1.2.47</fastjson-version>
<mybatis-plus.version>3.1.0</mybatis-plus.version>
<mybatis.version>3.4.5</mybatis.version>
</properties>
<!-- 阿里云maven仓库 -->
<repositories>
<repository>
<id>public</id>
<name>aliyun nexus</name>
<url>http://maven.aliyun.com/nexus/content/groups/public/</url>
<releases>
<enabled>true</enabled>
</releases>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>public</id>
<name>aliyun nexus</name>
<url>http://maven.aliyun.com/nexus/content/groups/public/</url>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>false</enabled>
</snapshots>
</pluginRepository>
</pluginRepositories>
<dependencies>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>${fastjson-version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${springframework-version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${springframework-version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${springframework-version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>${springframework-version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j-version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${slf4j-version}</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j-version}</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql-version}</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>${druid-version}</version>
</dependency>
<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>${commons-lang-version}</version>
</dependency>
<!--mybatis相关包-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.1</version>
</dependency>
<!--分页插件-->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>5.1.4</version>
</dependency>
</dependencies>
<build>
<finalName>mk_mybatis</finalName>
<resources>
<resource>
<directory>${basedir}/src/main/resources</directory>
<includes>
<include>*.xml</include>
<include>**/*.xml</include>
<include>**/*.properties</include>
</includes>
</resource>
<resource>
<directory>${basedir}/src/main/java/org/mk/mybatis/mapper</directory>
<targetPath>${project.build.directory}/classes/org/mk/mybatis/mapper</targetPath>
<includes>
<include>*.xml</include>
</includes>
</resource>
</resources>
</build>
</project>2.spring-bean.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.1.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd
">
<!-- 自动扫描 -->
<context:component-scan base-package="org.mk.mybatis.*"/>
<!-- 引入配置文件 -->
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath:druid.properties</value>
</list>
</property>
</bean>
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
<!-- 驱动名称 -->
<property name="driverClassName" value="${jdbc_driver}"/>
<property name="url" value="${jdbc_url}"/>
<property name="username" value="${jdbc_user}"/>
<property name="password" value="${jdbc_password}"/>
<!-- 配置初始化大小、最小、最大 -->
<property name="initialSize" value="1"/>
<property name="minIdle" value="5"/>
<property name="maxActive" value="200"/>
<!-- 配置获取连接等待超时的时间 -->
<property name="maxWait" value="60000"/>
<!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 -->
<property name="timeBetweenEvictionRunsMillis" value="60000"/>
<!-- 配置一个连接在池中最小生存的时间，单位是毫秒 -->
<property name="minEvictableIdleTimeMillis" value="300000"/>
<!-- 测试有效用的SQL Query -->
<property name="validationQuery" value="SELECT 'x'"/>
<!-- 连接空闲时测试是否有效 -->
<property name="testWhileIdle" value="true"/>
<!-- 获取连接时测试是否有效 -->
<property name="testOnBorrow" value="false"/>
<!-- 归还连接时是否测试有效 -->
<property name="testOnReturn" value="false"/>
<!-- 设置字符集为utf8mb4 -->
<!--<property name="connectionInitSqls" value="set names utf8mb4;"/>-->
<!-- 打开PSCache，并且指定每个连接上PSCache的大小 如果用Oracle，则把poolPreparedStatements配置为true，mysql可以配置为false
<property name="poolPreparedStatements" value="true" />
<property name="maxPoolPreparedStatementPerConnectionSize" value="20" /> -->
<!-- 配置监控统计拦截的filters
<property name="filters" value="stat" /> -->
<property name="filters" value="config"/>
<!-- 数据库密码提供加密功能 -->
<property name="connectionProperties" value="${jdbc_publickey}"/>
</bean>
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<!--<property name="configLocation" value="classpath:mybatis/mybatis-config.xml"></property>-->
<!-- 自动扫描mapping.xml文件 -->
<property name="mapperLocations" value="classpath:org/mk/mybatis/mapper/*.xml"/>
<property name="plugins">
<array>
<bean class="com.github.pagehelper.PageInterceptor">
<property name="properties">
<!-- config params as the following -->
<value>
helperDialect=mysql
</value>
</property>
</bean>
</array>
</property>
</bean>
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="org.mk.mybatis.mapper"/>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
</bean>
<!-- (事务管理)-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
<!-- 可以使用 mybatis spring sqlSessionTemplate ，细化操作细节，在dao层使用,使用时直接让spring注入即可 -->
<!--<bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">-->
<!--<constructor-arg index="0" ref="sqlSessionFactory"></constructor-arg>-->
<!--</bean>-->
<!-- 通知 -->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<!-- 传播行为 -->
<tx:method name="save*" propagation="REQUIRED"/>
<tx:method name="insert*" propagation="REQUIRED"/>
<tx:method name="update*" propagation="REQUIRED"/>
<tx:method name="delete*" propagation="REQUIRED"/>
<tx:method name="find*" propagation="SUPPORTS" read-only="true"/>
<tx:method name="get*" propagation="SUPPORTS" read-only="true"/>
<tx:method name="select*" propagation="SUPPORTS" read-only="true"/>
</tx:attributes>
</tx:advice>
<!-- 配置aop -->
<aop:config>
<aop:advisor advice-ref="txAdvice" pointcut="execution(* org.mk.mybatis.service..*.*(..))"/>
</aop:config>
</beans>3.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>
<!--db配置文件-->
<!--<properties resource="classpath:mybatis/mybatis.properties">-->
<!--<property name="test" value="test"/>-->
<!--</properties>-->
<settings>
<setting name="logImpl" value="STDOUT_LOGGING" />
<setting name="cacheEnabled" value="true"/>
<setting name="lazyLoadingEnabled" value="true"/>
<setting name="multipleResultSetsEnabled" value="true"/>
<setting name="useColumnLabel" value="true"/>
<setting name="useGeneratedKeys" value="false"/>
<setting name="autoMappingBehavior" value="PARTIAL"/>
<setting name="autoMappingUnknownColumnBehavior" value="WARNING"/>
<setting name="defaultExecutorType" value="SIMPLE"/>
<setting name="defaultStatementTimeout" value="25"/>
<setting name="defaultFetchSize" value="100"/>
<setting name="safeRowBoundsEnabled" value="false"/>
<setting name="mapUnderscoreToCamelCase" value="false"/>
<setting name="localCacheScope" value="SESSION"/>
<setting name="jdbcTypeForNull" value="OTHER"/>
<setting name="lazyLoadTriggerMethods" value="equals,clone,hashCode,toString"/>
</settings>
<!--<mappers>-->
<!--<mapper resource="org/mk/mybatis/mapper/*.xml"/>-->
<!--</mappers>-->
</configuration>4.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="org.mk.mybatis.mapper.UserMapper">
<!-- 根据id查询得到一个user对象-->
<select id="getUser" parameterType="int" resultType="org.mk.mybatis.entity.User">
select * from user where id=#{id}
</select>
</mapper>5.UserMapper 接口类
package org.mk.mybatis.mapper;
import org.mk.mybatis.entity.User;
/**
* @author mkfans
* @description UserMapper
* @date 19-4-16
**/
public interface UserMapper {
public abstract User getUser(int uid);
}
6.service服务类
package org.mk.mybatis.service;
import org.mk.mybatis.entity.User;
import org.mk.mybatis.mapper.UserMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
/**
* @author mkfans
* @description Userservice
* @date 19-4-16
**/
@Service("userService")
public class Userservice {
@Autowired
private UserMapper userMapper;
public User getUser(int id) {
//业务处理
return userMapper.getUser(id);
}
}
7.实体类
package org.mk.mybatis.entity;
import java.text.SimpleDateFormat;
import java.util.Date;
/**
* @author mkfans
* @description User
* @date 19-4-16
**/
public class User {
private int id;
private String name;
private Date birth;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getBirth() {
SimpleDateFormat format = new SimpleDateFormat("yyyy年MM月dd日");
return format.format(birth);
}
public void setBirth(Date birth) {
this.birth = birth;
}
@Override
public String toString() {
return "User{" +
"id=" + id +
", name='" + name + '\'' +
", birth=" + birth +
'}';
}
}
8.数据库user表
9.数据库链接配置文件 druid.properties
jdbc_driver=com.mysql.jdbc.Driver
#数据库连接
jdbc_url=jdbc\:mysql\://www.xxxx.com\:3306/mk_mybatis?useUnicode\=true&characterEncoding\=utf-8&serverTimezone\=Asia/Shanghai&zeroDateTimeBehavior\=convertToNull&useSSL\=false&rewriteBatchedStatements\=true
jdbc_user=11111
jdbc_password=11111
10.测试
import com.alibaba.fastjson.JSONObject;
import org.mk.mybatis.service.Userservice;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
/**
* @author mkfans
* @description Test
* @date 19-4-16
**/
public class Test {
public static void main(String[] args) {
ApplicationContext context = new ClassPathXmlApplicationContext("classpath:spring-bean.xml");
Userservice userservice = (Userservice) context.getBean("userService");
System.out.println(JSONObject.toJSONString(userservice.getUser(1)));
}
}