在IDEA中使用MyBatis Generator逆向工程生成代码（简单详细）

雨点打透心脏的1/2处 2021-08-13 23:49 876阅读 0赞

# 1.添加依赖 #

此处贴出的是我的所有依赖，其实不需要这么多但是其实一般工程都会涉及甚至更多的架包，为避免不必要的麻烦所以全部贴出来。

<?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>2.2.2.RELEASE</version>
            <relativePath/> 
        </parent>
        <groupId>com.dxf</groupId>
        <artifactId>springboot_crud</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <name>springboot_crud</name>
        <description>Demo project for Spring Boot</description>
    
        <properties>
            <java.version>1.8</java.version>
        </properties>
    
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis</artifactId>
                <version>3.5.3</version>
            </dependency>
            
            <dependency>
                <groupId>org.mybatis.spring.boot</groupId>
                <artifactId>mybatis-spring-boot-starter</artifactId>
                <version>1.3.2</version>
            </dependency>
            
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
            </dependency>
    
            
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-thymeleaf</artifactId>
            </dependency>
            
            <dependency>
                <groupId>org.webjars</groupId>
                <artifactId>jquery</artifactId>
                <version>3.4.1</version>
            </dependency>
    
            <dependency>
            <groupId>org.mybatis.generator</groupId>
            <artifactId>mybatis-generator-core</artifactId>
                <version>1.3.7</version>
             </dependency>
    
    
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
                <exclusions>
                    <exclusion>
                        <groupId>org.junit.vintage</groupId>
                        <artifactId>junit-vintage-engine</artifactId>
                    </exclusion>
                </exclusions>
            </dependency>
        </dependencies>
    
        <build>
            <plugins>
                <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>1.3.7</version>
                </plugin>
            </plugins>
        </build>
    
    </project>

# 2.创建配置文件 #

![在][20200117160644632.png]

<?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>
        
        <classPathEntry  location="D:\maven\repository\mysql\mysql-connector-java\8.0.18\mysql-connector-java-8.0.18.jar"/>
    
        <context id="DB2Tables" targetRuntime="MyBatis3">
            <commentGenerator>
                
                <property name="suppressAllComments" value="true" />
            </commentGenerator>
    
            
            <jdbcConnection
                    driverClass="com.mysql.cj.jdbc.Driver"
                    connectionURL="jdbc:mysql://localhost:3306/exam?serverTimezone=UTC"
                    userId="root"
                    password="root">
            </jdbcConnection>
    
            <javaTypeResolver >
                <property name="forceBigDecimals" value="false" />
            </javaTypeResolver>
    
            
            <javaModelGenerator targetPackage="com.dxf.springboot.pojo" targetProject="src/main/java">
                <property name="enableSubPackages" value="true" />
                <property name="trimStrings" value="true" />
            </javaModelGenerator>
    
            
            <sqlMapGenerator targetPackage="mapper"  targetProject="src/main/resources">
                <property name="enableSubPackages" value="true" />
            </sqlMapGenerator>
    
            
            <javaClientGenerator type="XMLMAPPER" targetPackage="com.dxf.springboot.mapper"  targetProject="src/main/java">
                <property name="enableSubPackages" value="true" />
            </javaClientGenerator>
    
            
            <table  tableName="user" domainObjectName="User" ></table>
              <table  tableName="clazz" domainObjectName="Clazz" > </table>
               <table  tableName="course" domainObjectName="Course" > </table>
                <table  tableName="cs" domainObjectName="Cs" > </table>
                 <table  tableName="knowledge" domainObjectName="Knowledge" > </table>
                  <table  tableName="paper" domainObjectName="Paper" > </table>
                   <table  tableName="pk" domainObjectName="Pk" > </table>
                    <table  tableName="us" domainObjectName="Us" > </table>
                     <table  tableName="xp" domainObjectName="Xp" > </table>
            <table  tableName="question" domainObjectName="Question" >
                <columnOverride column="question" jdbcType="VARCHAR" />
                <columnOverride column="optiona" jdbcType="VARCHAR" />
                <columnOverride column="optionb" jdbcType="VARCHAR" />
                <columnOverride column="optionc" jdbcType="VARCHAR" />
                <columnOverride column="optiond" jdbcType="VARCHAR" />
            </table>
    
        </context>
    </generatorConfiguration>

# 3.通过工具类生成代码 #

package com.dxf.springboot.utils;
    
    import org.mybatis.generator.api.MyBatisGenerator;
    import org.mybatis.generator.config.Configuration;
    import org.mybatis.generator.config.xml.ConfigurationParser;
    import org.mybatis.generator.internal.DefaultShellCallback;
    
    import java.io.File;
    import java.util.ArrayList;
    import java.util.List;
    
    public class MBGUtil { 
    public static void main(String[] args) throws Exception { 
    	List<String> warnings = new ArrayList<String>();
    	   boolean overwrite = true;
    	   File configFile = new File("src\\main\\resources\\generator\\generatorConfig.xml");
    	   ConfigurationParser cp = new ConfigurationParser(warnings);
    	   Configuration config = cp.parseConfiguration(configFile);
    	   DefaultShellCallback callback = new DefaultShellCallback(overwrite);
    	   MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config, callback, warnings);
    	   myBatisGenerator.generate(null);
    }
    }

# 4.生成位置目录 #

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjQwODY0OA_size_16_color_FFFFFF_t_70]  
![在这里插入图片描述][20200117161037472.png]

[20200117160644632.png]: /images/20210813/033c319c88a14bc6bfadb6f1f0f42d60.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjQwODY0OA_size_16_color_FFFFFF_t_70]: /images/20210813/9a871803556844bc9797cb3609498081.png
[20200117161037472.png]: /images/20210813/4af9ec073f214d74bf24a4023631f909.png