逆向工程生成实体与mapper文件
繁杂的对象属性如何通过逆向工程建立?
前提条件,表创建完成
采用maven方式,引入相应的jar包,版本自行更改
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| <?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">
<parent>
<artifactId>parent</artifactId>
<groupId>修改</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<packaging>jar</packaging>
<properties>
<org.mybatis.mybatis>3.5.4</org.mybatis.mybatis>
<mybatis.generator-plugin>1.4.0</mybatis.generator-plugin>
<mybatis-generator-core>1.4.0</mybatis-generator-core>
<com.alibaba.druid>1.1.22</com.alibaba.druid>
<mysql>8.0.18</mysql>
</properties>
<dependencies>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${org.mybatis.mybatis}</version>
</dependency>
</dependencies>
<artifactId>entity</artifactId>
<build>
<plugins>
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>${mybatis.generator-plugin}</version>
<dependencies>
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>${mybatis-generator-core}</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>${com.alibaba.druid}</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql}</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</build>
</project>
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写入相应的generatorConfig.xml文件,放入resources目录
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| <!DOCTYPE generatorConfiguration
PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
"http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
<generatorConfiguration>
<!-- mybatis-generator:generate -->
<context id="atguiguTables" targetRuntime="MyBatis3">
<commentGenerator>
<!-- 是否去除自动生成的注释 true:是;false:否 -->
<property name="suppressAllComments" value="true" />
</commentGenerator>
<!--数据库连接的信息： 驱动类、 连接地址、 用户名、 密码 -->
<jdbcConnection
driverClass="com.mysql.cj.jdbc.Driver"
connectionURL="jdbc:mysql://localhost:3306/project_crowd?serverTimezone=UTC"
userId="root"
password="123456">
</jdbcConnection>
<!-- 默认 false， 把 JDBC DECIMAL 和 NUMERIC 类型解析为 Integer， 为 true 时把
JDBC DECIMAL
和 NUMERIC 类型解析为 java.math.BigDecimal -->
<javaTypeResolver>
<property name="forceBigDecimals" value="false" />
</javaTypeResolver>
<!-- targetProject:生成 Entity 类的路径 -->
<javaModelGenerator targetProject=".\src\main\java" targetPackage="com.xxxx.entity">
<!-- enableSubPackages:是否让 schema 作为包的后缀 -->
<property name="enableSubPackages" value="true" />
<!-- 从数据库返回的值被清理前后的空格 -->
<property name="trimStrings" value="true" />
</javaModelGenerator>
<!-- targetProject:XxxMapper.xml 映射文件生成的路径 -->
<sqlMapGenerator targetProject=".\src\main\java" targetPackage="com.xxxx.mapper">
<!-- enableSubPackages:是否让 schema 作为包的后缀 -->
<property name="enableSubPackages" value="true" />
</sqlMapGenerator>
<!-- targetPackage： Mapper 接口生成的位置 -->
<javaClientGenerator type="XMLMAPPER" targetProject=".\src\main\java" targetPackage="com.xxxx.mapper">
<!-- enableSubPackages:是否让 schema 作为包的后缀 -->
<property name="enableSubPackages" value="true" />
</javaClientGenerator>
<!-- 数据库表名字和我们的 entity 类对应的映射指定 -->
<table tableName="t_admin" domainObjectName="Admin" />
</context>
</generatorConfiguration>
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