一.mybatis-generator是一款在使用mybatis框架时,自动生成model,dao和mapper的工具,减少了业务开发人员的手动编码时间,提高工作效率主要有以下三个配置文档:
1.本人使用的是maven构建,首先在pom.xml文件添加mybatis-generator依赖包以及插件,配置如下:
<?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>cn.enjoy</groupId>
<artifactId>mybatis1</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
<!-- 单元测试相关依赖 -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>4.3.2.RELEASE</version>
<scope>test</scope>
</dependency>
<!-- 日志相关依赖 -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.10</version>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>1.1.2</version>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-core</artifactId>
<version>1.1.2</version>
</dependency>
<!-- mysql驱动 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.18</version>
</dependency> <!-- mybatis相关依赖 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<!-- <version>3.5.0-SNAPSHOT</version>-->
<version>3.4.1</version>
</dependency>
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>5.1.4</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.5</version>
</dependency>
<dependency>
<groupId>tk.mybatis</groupId>
<artifactId>mapper</artifactId>
<version>4.0.0</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.6</version>
<dependencies>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.44</version>
</dependency>
<dependency>
<groupId>tk.mybatis</groupId>
<artifactId>mapper</artifactId>
<version>4.0.0</version>
</dependency>
</dependencies>
<configuration>
<overwrite>true</overwrite>
</configuration>
</plugin>
</plugins>
</build>
</project>
2.在resources目录下,数据库连接配置文件:jdbc.properties:
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/bysujc?useUnicode=true&characterEncoding=UTF-8
jdbc.username=root
jdbc.password=123456
3.在resources目录下generator配置文件:generatorConfig.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>
<!-- 引入配置文件 -->
<properties resource="jdbc.properties"/>
<!-- 指定数据库jdbc驱动jar包的位置,引入了maven可忽略 -->
<!--<classPathEntry location="D:\generator\mysql-connector-java-5.1.44.jar"/>-->
<!-- 一个数据库一个context -->
<context id="MySQL" targetRuntime="MyBatis3" defaultModelType="flat">
<!-- 设置使用UTF-8编码格式 -->
<property name="javaFileEncoding" value="UTF-8"/>
<property name="beginningDelimiter" value="`"/>
<property name="endingDelimiter" value="`"/>
<!-- plugin -->
<!--<plugin type="org.mybatis.generator.plugins.CachePlugin"/>-->
<plugin type="org.mybatis.generator.plugins.SerializablePlugin"/>
<plugin type="org.mybatis.generator.plugins.ToStringPlugin"/>
<plugin type="tk.mybatis.mapper.generator.MapperPlugin">
<property name="mappers" value="tk.mybatis.mapper.common.Mapper"/>
<!-- caseSensitive默认false,当数据库表名区分大小写时,可以将该属性设置为true -->
<property name="caseSensitive" value="false"/>
</plugin>
<!-- 取消生成的代码注释 -->
<commentGenerator type="org.mybatis.generator.internal.DefaultCommentGenerator">
<!-- 是否去除自动生成的注释 true:是 : false:否 -->
<property name="suppressAllComments" value="true"/>
<!-- true时,注释中不会添加生成时间,ps:似乎没用 -->
<property name="suppressDate" value="true"/>
<!-- 此处为 true 时,生成的 Model 包含对应表字段注释 -->
<property name="addRemarkComments" value="true"/>
</commentGenerator>
<!-- jdbc连接 -->
<jdbcConnection driverClass="${jdbc.driver}"
connectionURL="${jdbc.url}" userId="${jdbc.username}" password="${jdbc.password}"/>
<!-- 类型转换 -->
<javaTypeResolver>
<!-- 是否使用bigDecimal, false可自动转化以下类型(Long, Integer, Short, etc.) -->
<property name="forceBigDecimals" value="false"/>
</javaTypeResolver>
<!-- 01 指定javaBean生成的位置 -->
<!-- targetPackage:指定生成的model生成所在的包名 -->
<!-- targetProject:指定在该项目下所在的路径 -->
<javaModelGenerator targetPackage="com.bysujc.mybatis.entity"
targetProject="src/main/java">
<!-- 是否允许子包,即targetPackage.schemaName.tableName -->
<property name="enableSubPackages" value="false"/>
<!-- 是否对model添加构造函数 -->
<property name="constructorBased" value="true"/>
<!-- 是否针对string类型的字段在set的时候进行trim调用 -->
<property name="trimStrings" value="true"/>
<!-- 建立的Model对象是否 不可改变 即生成的Model对象不会有 setter方法,只有构造方法 -->
<property name="immutable" value="false"/>
</javaModelGenerator>
<!-- 02 指定sql映射文件生成的位置 -->
<sqlMapGenerator targetPackage="mapperxml"
targetProject="src/main/resources">
<!-- 是否允许子包,即targetPackage.schemaName.tableName -->
<property name="enableSubPackages" value="false"/>
</sqlMapGenerator>
<!-- 03 生成XxxMapper接口 -->
<!-- type="ANNOTATEDMAPPER",生成Java Model 和基于注解的Mapper对象 -->
<!-- type="MIXEDMAPPER",生成基于注解的Java Model 和相应的Mapper对象 -->
<!-- type="XMLMAPPER",生成SQLMap XML文件和独立的Mapper接口 -->
<javaClientGenerator targetPackage="com.bysujc.mybatis.mapper"
targetProject="src/main/java" type="XMLMAPPER">
<!-- 是否在当前路径下新加一层schema,false路径com.oop.eksp.user.model, true:com.oop.eksp.user.model.[schemaName] -->
<property name="enableSubPackages" value="false"/>
</javaClientGenerator>
<!-- 配置表信息 -->
<!-- schema即为数据库名 -->
<!-- tableName为对应的数据库表,写百分号就是所有的表 -->
<!-- domainObjectName是要生成的实体类 -->
<!-- enable*ByExample是否生成 example类 -->
<!--<table schema="" tableName="t_role" domainObjectName="TRolee"-->
<table schema="" tableName="%"
enableCountByExample="false" enableDeleteByExample="false"
enableSelectByExample="false" enableUpdateByExample="false">
<!-- 忽略列,不生成bean 字段 -->
<!-- <ignoreColumn column="FRED" /> -->
<!-- 指定列的java数据类型 -->
<!-- <columnOverride column="LONG_VARCHAR_FIELD" jdbcType="VARCHAR" /> -->
<!-- 统一去掉表名前面的T -->
<!--<domainObjectRenamingRule searchString="^T" replaceString=""/>-->
</table>
</context>
</generatorConfiguration>
二.以上配置文件完毕,以下操作二选一
1.idea中点击右边mvaen projects:点击mybatis-generator中mybatis-generator:generate
2.配置mavan:mybatis-generator:generate -e