SpringBoot学习之整合Mybatis Generator

pom.xml 文件配置

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<?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>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.6.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>demo</name>
<description>Demo project for Spring Boot</description>

<properties>
<java.version>1.8</java.version>
<mysql.version>6.0.6</mysql.version>
<mybatis.version>1.3.4</mybatis.version>
<lombok.version>1.18.6</lombok.version>
<mybatis.generator.version>1.3.5</mybatis.generator.version>
<alibaba.druid.version>1.1.18</alibaba.druid.version>
</properties>

<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>

<!--数据库相关 BEGIN-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>
<!--Mybatis-->
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>${mybatis.version}</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
<version>${alibaba.druid.version}</version>
</dependency>
<!--数据库相关 END-->

<!--工具类 BEGIN-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${lombok.version}</version>
<scope>provided</scope>
</dependency>
<!--工具类 END-->
</dependencies>

<build>
<resources>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.xml</include>
</includes>
<filtering>true</filtering>
</resource>

<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.properties</include>
</includes>
</resource>
</resources>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>${mybatis.generator.version}</version>
<configuration>
<configurationFile>
${basedir}/src/main/resources/generatorConfig.xml
</configurationFile>
<overwrite>true</overwrite>
<verbose>true</verbose>
</configuration>
<dependencies>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</build>
</project>

generatorConfig.xml 配置

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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
"http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">

<generatorConfiguration>
<properties resource="application-dev.properties"/>

<context id="Mysql" targetRuntime="MyBatis3">

<plugin type="org.mybatis.generator.plugins.SerializablePlugin" />

<commentGenerator>
<property name="suppressDate" value="true"/>
<property name="suppressAllComments" value="true"/>
</commentGenerator>


<jdbcConnection driverClass="${spring.datasource.driver-class-name}"
connectionURL="${spring.datasource.url}"
userId="${spring.datasource.username}"
password="${spring.datasource.password}">
<!--设置可以获取tables remarks信息-->
<property name="useInformationSchema" value="true"/>
<!--设置可以获取remarks信息-->
<property name="remarks" value="true"/>
</jdbcConnection>


<javaModelGenerator targetPackage="com.examle.demo.pojo" targetProject="src/main/java"/>

<sqlMapGenerator targetPackage="mapper" targetProject="src/main/resources"/>

<javaClientGenerator targetPackage="com.example.demo.dao" targetProject="src/main/java"
type="XMLMAPPER"/>


<table tableName="demo_cart" domainObjectName="Cart" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false">
<generatedKey column="id" sqlStatement="Mysql" identity="true" />
</table>
</context>
</generatorConfiguration>

application-dev.properties 配置

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spring.application.name=demo
server.port=8088

# 数据库配置
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/demo?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=GMT%2B8
spring.datasource.username=root
spring.datasource.password=
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource

# 连接池配置
#连接池的设置
#初始化时建立物理连接的个数
spring.datasource.druid.initial-size=5
#最小连接池数量
spring.datasource.druid.min-idle=5
#最大连接池数量 maxIdle已经不再使用
spring.datasource.druid.max-active=20
#获取连接时最大等待时间,单位毫秒
spring.datasource.druid.max-wait=60000
#申请连接的时候检测,如果空闲时间大于timeBetweenEvictionRunsMillis,执行validationQuery检测连接是否有效。
spring.datasource.druid.test-while-idle=true
#既作为检测的间隔时间又作为testWhileIdel执行的依据
spring.datasource.druid.time-between-eviction-runs-millis=60000
#销毁线程时检测当前连接的最后活动时间和当前时间差大于该值时,关闭当前连接
spring.datasource.druid.min-evictable-idle-time-millis=30000
#用来检测连接是否有效的sql 必须是一个查询语句
#mysql中为 select 'x'
#oracle中为 select 1 from dual
spring.datasource.druid.validation-query=select 'x'
#申请连接时会执行validationQuery检测连接是否有效,开启会降低性能,默认为true
spring.datasource.druid.test-on-borrow=false
#归还连接时会执行validationQuery检测连接是否有效,开启会降低性能,默认为true
spring.datasource.druid.test-on-return=false
#当数据库抛出不可恢复的异常时,抛弃该连接
spring.datasource.druid.exception-sorter=true
#是否缓存preparedStatement,mysql5.5+建议开启
#spring.datasource.druid.pool-prepared-statements=true
#当值大于0时poolPreparedStatements会自动修改为true
spring.datasource.druid.max-pool-prepared-statement-per-connection-size=20
#配置扩展插件
spring.datasource.druid.filters=stat,wall
#通过connectProperties属性来打开mergeSql功能;慢SQL记录
spring.datasource.druid.connection-properties=druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500
#合并多个DruidDataSource的监控数据
spring.datasource.druid.use-global-data-source-stat=true
#设置访问druid监控页的账号和密码,默认没有
#spring.datasource.druid.stat-view-servlet.login-username=admin
#spring.datasource.druid.stat-view-servlet.login-password=admin

#mybatis
mybatis.mapper-locations=classpath:mapper/*.xml
mybatis.type-aliases-package=com.example.demo.pojo

文件配置已全部完成,执行 mybatis-generator:generate 即可