17mybatis生成器工具

1、建立maven 项目

2、打开项目的pom.xml 文件
<?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.fz</groupId>
<artifactId>my10</artifactId>
<packaging>jar</packaging>
<version>1.0</version>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.4</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.41</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.16.16</version>
</dependency>
<!-- logback -->
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-core</artifactId>
<version>1.2.3</version>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>1.2.3</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.25</version>
</dependency>
</dependencies>

<build>
<finalName>${project.artifactId}</finalName>
<testSourceDirectory>src/test/java</testSourceDirectory>
<sourceDirectory>src/main/java</sourceDirectory>
<!-- 处理无法加载资源配置文件 -->
<resources>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.xml</include>
</includes>
</resource>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.xml</include>
<include>**/*.properties</include>
</includes>
</resource>
</resources>
<plugins>

<!-- 生成器插件 -->
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.5</version>
<configuration>
<!-- 如果此行不配置，则生成器自动找 src/main/resources/generatorConfig.xml -->
<configurationFile>src/main/resources/gc.xml</configurationFile>

<verbose>true</verbose>
<overwrite>true</overwrite>
</configuration>

<!-- 如果下边依赖数据库驱动不配置，则在src/main/resources/generatorConfig.xml 中配置如下 -->
<dependencies>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.40</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</build>
</project>

3、在src/main/resouces/建立
db.properties
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/db?useSSL=true&useUnicode=true&characterEncoding=UTF8
jdbc.username=root
jdbc.password=root

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>
<properties resource="db.properties"/>
<!-- 全局配置参数 -->
<settings>
<!-- 延迟加载总开关 -->
<setting name="lazyLoadingEnabled" value="true"/>
<!-- 设置按需加载 -->
<setting name="aggressiveLazyLoading" value="false"/>

<setting name="logPrefix" value="dao."/>
</settings>
<typeAliases>
<package name="com.fz.entity"/>
</typeAliases>
<environments default="development">
<environment id="development">
<transactionManager type="JDBC"/>
<dataSource type="POOLED">
<property name="driver" value="${jdbc.driver}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</dataSource>
</environment>
</environments>
<mappers>
<package name="com.fz.mapper"/>
</mappers>
</configuration>

gc.xml
<?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="db.properties"/>
<context id="mysql" targetRuntime="MyBatis3">

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

<jdbcConnection driverClass="${jdbc.driver}" connectionURL="${jdbc.url}" userId="${jdbc.username}" password="${jdbc.password}"/>

<javaTypeResolver>
<property name="forceBigDecimals" value="false"/>
</javaTypeResolver>

<javaModelGenerator targetPackage="com.mybatis.model" targetProject="src/main/java">
<property name="enableSubPackages" value="true"/>
<property name="trimStrings" value="true"/>
</javaModelGenerator>

<sqlMapGenerator targetPackage="com.mybatis.mapper" targetProject="src/main/java">
<property name="enableSubPackages" value="true"/>
</sqlMapGenerator>

<javaClientGenerator type="XMLMAPPER" targetPackage="com.mybatis.mapper" targetProject="src/main/java">
<property name="enableSubPackages" value="true"/>
</javaClientGenerator>

<table tableName="student" domainObjectName="Student"
enableCountByExample="false" enableUpdateByExample="false"
enableDeleteByExample="false" enableSelectByExample="false"
selectByExampleQueryId="false"/>

<table tableName="book" domainObjectName="Book"
enableCountByExample="true" enableUpdateByExample="true"
enableDeleteByExample="true" enableSelectByExample="true"
selectByExampleQueryId="true"/>
</context>
</generatorConfiguration>

logback.xml 日志
<?xml version="1.0"?>
<configuration>
<!-- ch.qos.logback.core.ConsoleAppender 控制台输出 -->
<appender name="console" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>[%-5level] %d{HH:mm:ss.SSS} [%thread] %logger{36} - %msg%n</pattern>
</encoder>
</appender>
<!-- 日志级别 -->
<root>
<level value="error" />
<appender-ref ref="console" />
</root>
<logger name="dao" level="DEBUG"/>
</configuration>

4、打开idea 中的maven面板 Maven Project
找到执行生成