Maven插件之MyBatis Generator

小灰灰 2022-07-15 06:56 238阅读 0赞

MyBatis Generator(MBG)是MyBatis和iBATIS的逆向工程插件工具，可以根据表结构自动生成实体类、包含简单的CRUD操作的mapper映射文件和mapper接口，无需手工编码，非常的方便，具体用法只需以下三步。

# 1.引入maven插件 #

<build>
            <plugins>
                
                <plugin>
                    <groupId>org.mybatis.generator</groupId>
                    <artifactId>mybatis-generator-maven-plugin</artifactId>
                    <version>1.3.2</version>
                    
                    <dependencies>
                        <dependency>
                            <groupId>mysql</groupId>
                            <artifactId>mysql-connector-java</artifactId>
                            <version>5.1.35</version>
                        </dependency>
                    </dependencies>
                    <configuration>
                        
                        <configurationFile>src/main/resources/generatorConfig.xml</configurationFile>
                        
                        <verbose>true</verbose>
                        
                        <overwrite>true</overwrite>
                    </configuration>
                </plugin>
            </plugins>
        </build>

# 2.编写配置文件 #

<?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>
        
       
    
        <context id="DB2Tables" targetRuntime="MyBatis3">
            
            <commentGenerator>
                <property name="suppressAllComments" value="true" />
            </commentGenerator>
            
            <jdbcConnection driverClass="com.mysql.jdbc.Driver"
                            connectionURL="jdbc:mysql://127.0.0.1:3306/xxx_base?useUnicode=true"
                            userId="root" password="123">
            </jdbcConnection>
            
            <javaTypeResolver>
                
                <property name="forceBigDecimals" value="false" />
            </javaTypeResolver>
            
            <javaModelGenerator targetPackage="com.xxx.domain"
                                targetProject="src/main/java">
                <property name="enableSubPackages" value="true" />
                <property name="trimStrings" value="true" />
            </javaModelGenerator>
           
            <sqlMapGenerator targetPackage="mybatis.com.xxx.persistence"
                             targetProject="src/main/resources">
                <property name="enableSubPackages" value="true" />
            </sqlMapGenerator>
            
            <javaClientGenerator type="XMLMAPPER"
                                 targetPackage="com.xxx.persistence" targetProject="src/main/java">
                <property name="enableSubPackages" value="true" />
            </javaClientGenerator>
    
            <table tableName="t_user" domainObjectName="User" enableCountByExample="false" enableUpdateByExample="false"
                   enableDeleteByExample="false" enableSelectByExample="false"  selectByExampleQueryId="false"></table>
        </context>
    </generatorConfiguration>

更详细配置参考：http://www.mybatis.org/generator/configreference/xmlconfig.html

# 3.代码生成 #

运行插件命令 `mvn mybatis-generator:generate`