配置xml文件使用mybatis-generaor自动生成mapper、model代码

雨点打透心脏的1/2处 2023-02-20 12:19 13阅读 0赞

配置 xml 文件自动生成 mapper、model 代码，在此便将连接数据库的属性值提取至 generator.properties 文件中，步骤如下：  
1、添加 **mybatis-generator-maven-plugin** 依赖，其中版本可以自行修改

<plugin>
        <groupId>org.mybatis.generator</groupId>
        <artifactId>mybatis-generator-maven-plugin</artifactId>
        <version>1.3.7</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>8.0.13</version>
            </dependency>
        </dependencies>
    </plugin>

以及mybatis依赖

<dependency>
         <groupId>org.mybatis.spring.boot</groupId>
         <artifactId>mybatis-spring-boot-starter</artifactId>
         <version>自定义版本号</version>
     </dependency>

2、generator.properties文件，这里包含驱动类、连接字符串、数据库用户名、数据库密码。如果缺少serverTimezone属性值可能会出现乱码

jdbc.driverClass=com.mysql.cj.jdbc.Driver
    jdbc.connectionURL=jdbc:mysql://localhost:3306/mall?useUnicode=true&characterEncoding=utf-8&serverTimezone=Asia/Shanghai&useSSL=false
    jdbc.userId=用户名
    jdbc.password=密码

3、generatorConfig.xml 文件，注意此处使用的是 MySql数据库

<?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="generator.properties"/>
        <context id="MySqlContext" targetRuntime="MyBatis3" defaultModelType="flat">
            
            <property name="beginningDelimiter" value="`"/>
            <property name="endingDelimiter" value="`"/>
    
            <property name="javaFileEncoding" value="UTF-8"/>
            
            <plugin type="org.mybatis.generator.plugins.SerializablePlugin"/>
            
            <plugin type="org.mybatis.generator.plugins.ToStringPlugin"/>
            
            <plugin type="org.mybatis.generator.plugins.UnmergeableXmlMappersPlugin" />
    
            
            
            
            
            
            
            
    
            <commentGenerator>
                
                <property name="suppressAllComments" value="true"/>
                <property name="suppressDate" value="true"/>
                <property name="addRemarkComments" value="true"/>
            </commentGenerator>
    
            <jdbcConnection driverClass="${jdbc.driverClass}"
                            connectionURL="${jdbc.connectionURL}"
                            userId="${jdbc.userId}"
                            password="${jdbc.password}">
                
                <property name="nullCatalogMeansCurrent" value="true" />
            </jdbcConnection>
    		  
            <javaModelGenerator targetPackage="com.cll.cllmbg.model" targetProject="src\main\java"/>
    		
            <sqlMapGenerator targetPackage="mapper" targetProject="src\main\resources"/>
    		
            <javaClientGenerator type="XMLMAPPER" targetPackage="com.cll.cllmbg.mapper"
                                 targetProject="src\main\java"/>
            
            <table tableName="%">
                <generatedKey column="id" sqlStatement="MySql" identity="true"/>
            </table>
        </context>
    </generatorConfiguration>

4、生成代码  
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