IDEA创建Mybatis逆向工程

环境配置

1.创建Maven项目

2.在pom文件添加mybatis逆向工程所需的坐标

<?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">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.atguigu.crowd</groupId>
    <artifactId>atcrowdfunding06-common-reverse</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>
    <build>
        <!-- 构建过程中用到的插件 -->
        <plugins>
            <!-- 具体插件，逆向工程的操作是以构建过程中插件形式出现的 -->
            <plugin>
                <groupId>org.mybatis.generator</groupId>
                <artifactId>mybatis-generator-maven-plugin</artifactId>
                <version>1.3.0</version>
                <!-- 插件的依赖 -->
                <dependencies>
                    <dependency>
                        <groupId>org.mybatis</groupId>
                        <artifactId>mybatis</artifactId>
                        <version>3.2.8</version>
                    </dependency>
                    <!-- 逆向工程的核心依赖 -->
                    <dependency>
                        <groupId>org.mybatis.generator</groupId>
                        <artifactId>mybatis-generator-core</artifactId>
                        <version>1.3.2</version>
                    </dependency>
                    <!-- 数据库连接池 -->
                    <dependency>
                        <groupId>com.alibaba</groupId>
                        <artifactId>druid</artifactId>
                        <version>1.1.10</version>
                    </dependency>
                    <dependency>
                        <groupId>mysql</groupId>
                        <artifactId>mysql-connector-java</artifactId>
                        <version>5.1.8</version>
                    </dependency>
                </dependencies>
            </plugin>
        </plugins>
    </build>

</project>

3.配置xml文件

在resource中添加xml文件generatorConfig.xml

<?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>
    <!-- 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.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3306/数据库"
                userId="root" password="root">
        </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.atguigu.crowd.entity">
            <!-- enableSubPackages:是否让 schema 作为包的后缀 -->
            <property name="enableSubPackages" value="false"/>
            <!-- 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.atguigu.crowd.mapper">
            <!-- enableSubPackages:是否让 schema 作为包的后缀 -->
            <property name="enableSubPackages" value="false"/>
        </sqlMapGenerator>
        <!-- targetPackage：Mapper 接口生成的位置 -->
        <javaClientGenerator type="XMLMAPPER"
                             targetProject=".\src\main\java"
                             targetPackage="com.atguigu.crowd.mapper">
            <!-- enableSubPackages:是否让 schema 作为包的后缀 -->
            <property name="enableSubPackages" value="false"/>
        </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>

运行插件