SpringBoot如何整合mybatis-generator-maven-plugin 1.4.0
SpringBoot實現(xiàn)整合mybatis-generator-maven-plugin 1.4.0
創(chuàng)建 Maven 工程
網(wǎng)上有很多教程且 Idea 可以直接創(chuàng)建 這里就不進行
pom.xml 引入依賴和插件
pom中generalto-maven-plugs中必須指定mysql驅(qū)動,并且明確版本
<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.5.0</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>top.orginly</groupId> <artifactId>mall</artifactId> <version>0.0.1-SNAPSHOT</version> <name>mall</name> <description>Demo project for Spring Boot</description> <properties> <java.version>11</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>2.2.0</version> </dependency> <!-- mysql8 驅(qū)動 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>8.0.24</version> </dependency> </dependencies> <build> <plugins> <!-- springboot的maven插件 --> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> <plugin> <groupId>org.mybatis.generator</groupId> <artifactId>mybatis-generator-maven-plugin</artifactId> <version>1.4.0</version> <configuration> <!-- mybatis用于生成代碼的配置文件 如果配置文件名為generatorConfig.xml 則不需要配置 --> <!-- <configurationFile>src/main/resources/generator/generatorConfig.xml</configurationFile>--> <!-- 允許移動生成的文件 --> <verbose>true</verbose> <!-- 啟用覆蓋 --> <overwrite>true</overwrite> </configuration> <!-- 引入插件所需要的依賴 --> <dependencies> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>8.0.24</version> </dependency> </dependencies> </plugin> </plugins> </build> </project>
generatorConfig.xml 自動生成配置文件
table標簽中需要指定tableName和生成的實體名字
<?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> <!-- 是否生成注釋代時間戳--> <property name="suppressDate" value="true"/> <!-- 是否去除自動生成的注釋 true:是 : false:否 --> <property name="suppressAllComments" value="true"/> </commentGenerator> <!--數(shù)據(jù)庫鏈接地址賬號密碼--> <jdbcConnection driverClass="com.mysql.cj.jdbc.Driver" connectionURL="jdbc:mysql://172.17.0.2:3306/spring-boot-mall?useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai" userId="root" password="000"> </jdbcConnection> <javaTypeResolver> <!--該屬性可以控制是否強制DECIMAL和NUMERIC類型的字段轉(zhuǎn)換為Java類型的java.math.BigDecimal,默認值為false,一般不需要配置。--> <property name="forceBigDecimals" value="false"/> </javaTypeResolver> <!--生成Model類存放位置--> <javaModelGenerator targetPackage="top.orginly.mall.model.pojo" targetProject="src/main/java"> <!--enableSubPackages:如果true,MBG會根據(jù)catalog和schema來生成子包。如果false就會直接用targetPackage屬性。默認為false。--> <property name="enableSubPackages" value="true"/> <!--trimStrings:是否對數(shù)據(jù)庫查詢結(jié)果進行trim操作,如果設置為true就會生成類似這樣public void setUsername(String username) {this.username = username == null ? null : username.trim();}的setter方法。默認值為false。--> <property name="trimStrings" value="true"/> </javaModelGenerator> <!--生成映射xml文件存放位置--> <sqlMapGenerator targetPackage="mappers" targetProject="src/main/resources"> <property name="enableSubPackages" value="true"/> </sqlMapGenerator> <!--生成Dao類存放位置(*Mapper.java)--> <!-- 客戶端代碼,生成易于使用的針對Model對象和XML配置文件 的代碼 type="ANNOTATEDMAPPER",生成Java Model 和基于注解的Mapper對象 type="MIXEDMAPPER",生成基于注解的Java Model 和相應的Mapper對象 type="XMLMAPPER",生成SQLMap XML文件和獨立的Mapper接口 --> <javaClientGenerator type="XMLMAPPER" targetPackage="top.orginly.mall.model.dao" targetProject="src/main/java"> <property name="enableSubPackages" value="true"/> </javaClientGenerator> <!--生成對應表及類名--> <table tableName="mall_user" domainObjectName="User" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"> <!--useActualColumnNames:如果設置為true,那么MBG會使用從數(shù)據(jù)庫元數(shù)據(jù)獲取的列名作為生成的實體對象的屬性。 如果為false(默認值),MGB將會嘗試將返回的名稱轉(zhuǎn)換為駝峰形式。 在這兩種情況下,可以通過 元素顯示指定,在這種情況下將會忽略這個(useActualColumnNames)屬性。--> <property name="useActualColumnNames" value="true"/> <!-- 數(shù)據(jù)庫表主鍵 可以不設置 --> <!-- <generatedKey column="id" sqlStatement="Mysql" identity="true"/> --> </table> </context> </generatorConfiguration>
運行生成文件
這里推薦使用IDEA
我們只需要找到右邊側(cè)欄中的maven
依次找到 plugins–>mybatis-generaltor–>mybatis-generaltor:generaltor
之后雙擊即可,此時刷新一下項目就自動生成我們想要的,mapper和xml以及pojo
提示 BUILD SUCCESS
即生成成功!
[INFO] Scanning for projects... [INFO] [INFO] [INFO] Building mall 0.0.1-SNAPSHOT [INFO] [INFO] [INFO] [INFO] Connecting to the Database [INFO] Introspecting table mall_user [INFO] Introspecting table mall_category [INFO] Introspecting table mall_goods [INFO] Introspecting table mall_order [INFO] Introspecting table mall_order_goods [INFO] Introspecting table mall_cart [INFO] Generating Primary Key class for table mall_user [INFO] Generating Record class for table mall_user [INFO] Generating Mapper Interface for table mall_user [INFO] Generating SQL Map for table mall_user [INFO] Generating Record class for table mall_category [INFO] Generating Mapper Interface for table mall_category [INFO] Generating SQL Map for table mall_category [INFO] Generating Record class for table mall_goods [INFO] Generating Mapper Interface for table mall_goods [INFO] Generating SQL Map for table mall_goods [INFO] Generating Primary Key class for table mall_order [INFO] Generating Record class for table mall_order [INFO] Generating Mapper Interface for table mall_order [INFO] Generating SQL Map for table mall_order [INFO] Generating Record class for table mall_order_goods [INFO] Generating Mapper Interface for table mall_order_goods [INFO] Generating SQL Map for table mall_order_goods [INFO] Generating Record class for table mall_cart [INFO] Generating Mapper Interface for table mall_cart [INFO] Generating SQL Map for table mall_cart [INFO] Saving file UserMapper.xml [INFO] Saving file CategoryMapper.xml [INFO] Saving file GoodsMapper.xml [INFO] Saving file OrderMapper.xml [INFO] Saving file OrderGoodsMapper.xml [INFO] Saving file CartMapper.xml [INFO] Saving file UserKey.java [INFO] Saving file User.java [INFO] Saving file UserMapper.java [INFO] Saving file Category.java [INFO] Saving file CategoryMapper.java [INFO] Saving file Goods.java [INFO] Saving file GoodsMapper.java [INFO] Saving file OrderKey.java [INFO] Saving file Order.java [INFO] Saving file OrderMapper.java [INFO] Saving file OrderGoods.java [INFO] Saving file OrderGoodsMapper.java [INFO] Saving file Cart.java [INFO] Saving file CartMapper.java [INFO] [INFO] BUILD SUCCESS [INFO] [INFO] Total time: 2.193 s [INFO] Finished at: 2021-06-01T22:33:37+08:00 [INFO]
配置 mybatis 數(shù)據(jù)源及 mappers 路徑
編輯配置文件 /src/main/resources/application.properties
# 數(shù)據(jù)源名稱 spring.datasource.name=spring_boot_mall # 數(shù)據(jù)庫連接 url spring.datasource.url=jdbc:mysql://172.17.0.2:3306/spring-boot-mall?useUnicode=true&characterEncoding=UTF-8&autoReconnect=true&useSSl=false;serverTimezone=Asia/Shanghai # 數(shù)據(jù)庫驅(qū)動類 spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver # 用戶名 spring.datasource.username=root # 密碼 spring.datasource.password=000 # 設置Mybatis Mapper文件路徑 mybatis.config-location=classpath:mappers/*.xml
注意事項
報錯 dao類無法找到
需要在spring-boot 入口類/src/main/java/top/orginly/mall/MallApplication.java
中添加注解@MapperScan(basePackages = "top.orginly.mall.model.dao")
指向mapper對應的類
@SpringBootApplication @MapperScan(basePackages = "top.orginly.mall.model.dao") public class MallApplication { public static void main(String[] args) { SpringApplication.run(MallApplication.class, args); } }
Service 實體類無法自動載入
類添加 @Service 注解后 出現(xiàn)找不到 Mapper 類無法找到
報錯但不影響程序正常運行但我們要解決掉,需要給 Mapper 添加 @Repository 注解告訴 IDEA 這是一個資源類
重新生成后運行出錯
必須先刪除 model 包和 mapper文件?。?!
到此這篇關于SpringBoot如何整合mybatis-generator-maven-plugin 1.4.0的文章就介紹到這了,更多相關SpringBoot整合mybatis-generator-maven-plugin 1.4.0內(nèi)容請搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關文章希望大家以后多多支持腳本之家!
相關文章
基于apache poi根據(jù)模板導出excel的實現(xiàn)方法
下面小編就為大家?guī)硪黄赼pache poi根據(jù)模板導出excel的實現(xiàn)方法。小編覺得挺不錯的,現(xiàn)在就分享給大家,也給大家做個參考。一起跟隨小編過來看看吧2017-06-06使用Java構(gòu)造和解析Json數(shù)據(jù)的兩種方法(詳解二)
這篇文章主要介紹了使用Java構(gòu)造和解析Json數(shù)據(jù)的兩種方法(詳解二)的相關資料,需要的朋友可以參考下2016-03-03spring?Cloud微服務阿里開源TTL身份信息的線程間復用
這篇文章主要為大家介紹了spring?Cloud微服務中使用阿里開源TTL身份信息的線程間復用,有需要的朋友可以借鑒參考下,希望能夠有所幫助,祝大家多多進步,早日升職加薪2023-01-01Springmvc發(fā)送json數(shù)據(jù)轉(zhuǎn)Java對象接收
這篇文章主要介紹了Springmvc發(fā)送json數(shù)據(jù)轉(zhuǎn)Java對象接收,文中通過示例代碼介紹的非常詳細,對大家的學習或者工作具有一定的參考學習價值,需要的朋友可以參考下2020-10-10Springboot中@Transactional注解與異常處理機制方式
這篇文章主要介紹了Springboot中@Transactional注解與異常處理機制方式,具有很好的參考價值,希望對大家有所幫助,如有錯誤或未考慮完全的地方,望不吝賜教2024-08-08