以下介紹的是針對通用tk mybatis 程式碼生成方法
1.依賴引入

<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
			<!--自動程式碼生成-->
			<plugin>
				<groupId>org.mybatis.generator</groupId>
				<artifactId>mybatis-generator-maven-plugin</artifactId>
				<version>1.3.2</version>
				<configuration>
					<!--指定生成檔案配置-->
					<configurationFile>${basedir}/src/main/resources/mybatis-generator-config.xml</configurationFile>
					<overwrite>true</overwrite>
					<verbose>true</verbose>
				</configuration>
				<dependencies>
					<dependency>
						<groupId>mysql</groupId>
						<artifactId>mysql-connector-java</artifactId>
						<version>5.1.40</version>
					</dependency>
					<dependency>
						<groupId>tk.mybatis</groupId>
						<artifactId>mapper</artifactId>
						<version>3.4.2</version>
					</dependency>
				</dependencies>
			</plugin>
		</plugins>
	</build>
 

2.mybatis-generator-config.xml
該檔案放在靜態資源目錄resources下（同application.properties目錄）

<?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="MyBatis3Simple" defaultModelType="flat">

        <plugin type="tk.mybatis.mapper.generator.MapperPlugin">
            <!--生成的mapper.java繼承的類-->
            <property name="mappers" value="com.test.layui.base.mapper.BaseMapper"/>
            <!-- caseSensitive預設false，當資料庫表名區分大小寫時，可以將該屬性設定為true -->
            <property name="caseSensitive" value="true"/>
        </plugin>

        <!--資料庫配置-->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
                        connectionURL="jdbc:mysql://ip:port/database"
                        userId="root"
                        password="123">
        </jdbcConnection>

        <!--實體類路徑-->
        <javaModelGenerator targetPackage="com.test.layui.model" targetProject="E:\saas\layui\src\main\java"/>

        <!--mapper.xml生成的路徑：resources/mapper下-->
        <sqlMapGenerator targetPackage="mapper"  targetProject="E:\saas\layui\src\main\resources"/>

        <!--mapper.java生成的路徑-->
        <javaClientGenerator targetPackage="com.test.layui.mapper" targetProject="E:\saas\layui\src\main\java" type="XMLMAPPER" />

        <!--表結構-->
        <table tableName="test_person" >
            <generatedKey column="id" sqlStatement="Mysql" identity="true"/>
        </table>
        <table tableName="test_student" >
            <generatedKey column="id" sqlStatement="Mysql" identity="true"/>
        </table>
    </context>
</generatorConfiguration>
 

3.執行
在idea中點選mybatis-generator:generate即可,
結果會按照預設駝峰命名規則生成TestStudent.java TestPerson.java TestStudentMapper.java TestPersonMapper.java TestStudentMapper.xml TestPersonMapper.xml

(1)model
	package com.test.layui.model;
	
	import javax.persistence.*;
	
	@Table(name = "test_student")
	public class TestStudent {
	    @Id
	    @Column(name = "ID")
	    @GeneratedValue(strategy = GenerationType.IDENTITY)
	    private Long id;
	
	    @Column(name = "USER_NAME")
	    private String userName;
	
	    /**
	     * @return ID
	     */
	    public Long getId() {
	        return id;
	    }
	
	    /**
	     * @param id
	     */
	    public void setId(Long id) {
	        this.id = id;
	    }
	
	    /**
	     * @return USER_NAME
	     */
	    public String getUserName() {
	        return userName;
	    }
	
	    /**
	     * @param userName
	     */
	    public void setUserName(String userName) {
	        this.userName = userName;
	    }
	}
	（2）mapper.java
		public interface TestStudentMapper extends BaseMapper<TestStudent> {
		}
	（3）mapper.xml
	
			<?xml version="1.0" encoding="UTF-8"?>
	<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
	<mapper namespace="com.test.layui.mapper.TestStudentMapper">
	  <resultMap id="BaseResultMap" type="com.test.layui.model.TestStudent">
	    <id column="ID" jdbcType="BIGINT" property="id" />
	    <result column="USER_NAME" jdbcType="VARCHAR" property="userName" />
	  </resultMap>
	</mapper>