技術標籤：springbootjavaspring

SpringBoot整合mybatis-generator

1. mybatis-generator簡介

   • mybatis-generator(mbg),又稱為mybatis逆向工程,用於根據資料表自動生成實體類、mapper.xml、mapper.java
     檔案,可以極大的提升工作效率

2. maven依賴

   
   <dependency>
       <groupId>org.mybatis.spring.boot</groupId>
       <artifactId>mybatis-spring-boot-starter</artifactId>
       <version>2.1.4</version>
   </dependency>
   <dependency>
       <groupId>mysql</groupId>
       <artifactId>mysql-connector-java</artifactId>
       <scope>runtime</scope>
   </dependency>
    <plugin>
        <groupId>org.mybatis.generator</groupId>
         <artifactId>mybatis-generator-maven-plugin</artifactId>
         <version>1.4.0</version>
    </plugin>
    
   

   • 需要依賴資料庫驅動,這裡我以MySQL為例

3. 配置解讀

   <?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="mysql" targetRuntime="MyBatis3">
   
           <!-- 引入外掛  -->
           <plugin type="org.mybatis.generator.plugins.SerializablePlugin" />
           <plugin type="org.mybatis.generator.plugins.ToStringPlugin" />
           <
    
   plugin type="com.itfsw.mybatis.generator.plugins.BatchInsertPlugin"/>
           <plugin type="com.itfsw.mybatis.generator.plugins.ModelColumnPlugin"/>
           <plugin type="com.itfsw.mybatis.generator.plugins.SelectOneByExamplePlugin"/>
   
           <!-- 註釋 -->
           <commentGenerator >
               <property name="suppressAllComments" value="false"/><!-- 是否取消註釋 -->
           </commentGenerator>
   
   
           <!--    資料庫連結資訊    -->
           <jdbcConnection driverClass="com.mysql.jdbc.Driver"
                           connectionURL="jdbc:mysql://127.0.0.1:3306/db_staging?useLegacyDatetimeCode=false&serverTimezone=Asia/Hong_Kong&useSSL=false&allowPublicKeyRetrieval=true"
                           userId="root"
                           password="root">
           </jdbcConnection>
   
           <!--    Java自動型別轉換     -->
           <javaTypeResolver >
               <!-- 是否使用bigDecimal， false可自動轉化以下型別（Long, Integer, Short, etc.） -->
               <property name="forceBigDecimals" value="false" />
           </javaTypeResolver>
   
           <!--    實體類存放的包    -->
           <javaModelGenerator targetPackage="com.zhang.example02mbg.entity" targetProject="src/main/java">
               <property name="enableSubPackages" value="true" />
               <property name="trimStrings" value="true" />
           </javaModelGenerator>
   
           <!--   xml檔案存放的位置     -->
           <sqlMapGenerator targetPackage="mapper"  targetProject="src/main/resources/">
               <property name="enableSubPackages" value="true" />
           </sqlMapGenerator>
   
           <!--   生成mapper存放位置     -->
           <javaClientGenerator type="XMLMAPPER" targetPackage="com.zhang.example02mbg.dao"  targetProject="src/main/java">
               <property name="enableSubPackages" value="true" />
           </javaClientGenerator>
   
           <!--   資料表名     -->
           <table schema="DB2ADMIN" tableName="ALLTYPES" domainObjectName="Customer" >
               <property name="useActualColumnNames" value="true"/>
               <generatedKey column="ID" sqlStatement="DB2" identity="true" />
               <columnOverride column="DATE_FIELD" property="startDate" />
               <ignoreColumn column="FRED" />
               <columnOverride column="LONG_VARCHAR_FIELD" jdbcType="VARCHAR" />
           </table>
   
       </context>
   </generatorConfiguration>
   

   • 需在resource目錄下新建一個generator.xml檔案 填寫配置資訊 資料庫配置 表名等

4. over
   

5. 歡迎大家關注我的GitHub 這個專案會寫springboot整合各種東西的demo
   https://github.com/zhanghaorui/spring-boot-example.git