SpringBoot+MybatisPlus+代码生成器整合示例

项目目录结构：

pom文件：

<?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.warrior</groupId> <artifactId>ETH</artifactId> <version>1.0-SNAPSHOT</version> <!-- Inherit defaults from Spring Boot --> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.0.0.BUILD-SNAPSHOT</version> </parent> <!-- Add typical dependencies for a web application --> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!-- mybatis的orm插件 --> <dependency> <groupId>com.baomidou</groupId> <artifactId>mybatisplus-spring-boot-starter</artifactId> <version>1.0.4</version> </dependency> <dependency> <groupId>com.baomidou</groupId> <artifactId>mybatis-plus</artifactId> <version>2.0.7</version> </dependency> <!-- https://mvnrepository.com/artifact/org.apache.velocity/velocity --> <dependency> <groupId>org.apache.velocity</groupId> <artifactId>velocity</artifactId> <version>1.7</version> </dependency> <!-- https://mvnrepository.com/artifact/org.freemarker/freemarker --> <dependency> <groupId>org.freemarker</groupId> <artifactId>freemarker</artifactId> <version>2.3.28</version> </dependency> <!--数据库连接jdbc依赖--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-jdbc</artifactId> </dependency> <!--mysql链接依赖--> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> </dependency> <!--阿里druid数据库链接依赖--> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.1.9</version> </dependency> <!-- https://mvnrepository.com/artifact/org.projectlombok/lombok --> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>0.10.1</version> <scope>provided</scope> </dependency> </dependencies> <!-- Package as an executable jar --> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> <!-- Add Spring repositories --> <!-- (you don’t need this if you are using a .RELEASE version) --> <repositories> <repository> <id>spring-snapshots</id> <url>http://repo.spring.io/snapshot</url> <snapshots> <enabled>true</enabled> </snapshots> </repository> <repository> <id>spring-milestones</id> <url>http://repo.spring.io/milestone</url> </repository> </repositories> <pluginRepositories> <pluginRepository> <id>spring-snapshots</id> <url>http://repo.spring.io/snapshot</url> </pluginRepository> <pluginRepository> <id>spring-milestones</id> <url>http://repo.spring.io/milestone</url> </pluginRepository> </pluginRepositories></project>

Application

package com.warrior;import org.mybatis.spring.annotation.MapperScan;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.EnableAutoConfiguration;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.ResponseBody; @SpringBootApplication@MapperScan('com.warrior.mapper') //配置mapper扫描public class Application { public static void main(String[] args) throws Exception { SpringApplication.run(Application.class, args); }}

application.properties

#默认启用开发环境配置spring.profiles.active=dev#启用生产环境配置#spring.profiles.active=pro

application-dev.properties

server.port=8080spring.datasource.type=com.alibaba.druid.pool.DruidDataSourcespring.datasource.url=jdbc:mysql://localhost:3306/ethspring.datasource.username=rootspring.datasource.password=123456spring.datasource.driver-class-name=com.mysql.jdbc.Driverspring.datasource.max-idle=10spring.datasource.max-wait=10000spring.datasource.min-idle=5spring.datasource.initial-size=5mybatis-plus.mapper-locations=classpath:/mapper/*Mapper.xmlmybatis-plus.typeAliasesPackage=com.cn.restyle.entity

配置文件：

1）.

package com.warrior.config; import javax.sql.DataSource; import org.springframework.boot.context.properties.ConfigurationProperties;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.jdbc.datasource.DataSourceTransactionManager; import com.alibaba.druid.pool.DruidDataSource; /** * 数据源配置 */@Configurationpublic class DataSourceConfig { @Bean(name='dataSource') @ConfigurationProperties(prefix='spring.datasource') public DataSource dataSource(){ return new DruidDataSource(); } // 配置事物管理器 @Bean(name='transactionManager') public DataSourceTransactionManager transactionManager(){ return new DataSourceTransactionManager(dataSource()); } }

2）. MybatisPlusConfig.java:

package com.warrior.config; import org.mybatis.spring.annotation.MapperScan;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import com.baomidou.mybatisplus.plugins.PaginationInterceptor; @Configuration//扫描dao或者是Mapper接口@MapperScan('com.warrior.mapper*')public class MybatisPlusConfig { /** * mybatis-plus 分页插件 */ @Bean public PaginationInterceptor paginationInterceptor(){ PaginationInterceptor page = new PaginationInterceptor(); page.setDialectType('mysql'); return page; } }

生成代码：

1）.mysql数据库建表

2）.代码生成器MpGenenator.java

import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map; import com.baomidou.mybatisplus.generator.AutoGenerator;import com.baomidou.mybatisplus.generator.InjectionConfig;import com.baomidou.mybatisplus.generator.config.*;import com.baomidou.mybatisplus.generator.config.converts.MySqlTypeConvert;import com.baomidou.mybatisplus.generator.config.po.TableInfo;import com.baomidou.mybatisplus.generator.config.rules.DbColumnType;import com.baomidou.mybatisplus.generator.config.rules.DbType;import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy; /** * <p> * 代码生成器演示 * </p> */public class MpGenerator { final static String dirPath = 'D://'; /** * <p> * MySQL 生成演示 * </p> */ public static void main(String[] args) { AutoGenerator mpg = new AutoGenerator(); // 选择 freemarker 引擎，默认 Veloctiy //mpg.setTemplateEngine(new FreemarkerTemplateEngine()); // 全局配置 GlobalConfig gc = new GlobalConfig(); gc.setOutputDir(dirPath); gc.setAuthor('lqh'); gc.setFileOverride(true); //是否覆盖 gc.setActiveRecord(true);// 不需要ActiveRecord特性的请改为false gc.setEnableCache(false);// XML 二级缓存 gc.setBaseResultMap(true);// XML ResultMap gc.setBaseColumnList(true);// XML columList // 自定义文件命名，注意 %s 会自动填充表实体属性！ // gc.setMapperName('%sDao'); // gc.setXmlName('%sMapper'); // gc.setServiceName('MP%sService'); // gc.setServiceImplName('%sServiceDiy'); // gc.setControllerName('%sAction'); mpg.setGlobalConfig(gc); // 数据源配置 DataSourceConfig dsc = new DataSourceConfig(); dsc.setDbType(DbType.MYSQL); dsc.setTypeConvert(new MySqlTypeConvert(){ // 自定义数据库表字段类型转换【可选】 @Override public DbColumnType processTypeConvert(String fieldType) { System.out.println('转换类型：' + fieldType); // 注意！！processTypeConvert 存在默认类型转换，如果不是你要的效果请自定义返回、非如下直接返回。 return super.processTypeConvert(fieldType); } }); dsc.setDriverName('com.mysql.jdbc.Driver'); dsc.setUsername('root'); dsc.setPassword('123456'); dsc.setUrl('jdbc:mysql://127.0.0.1:3306/eth?characterEncoding=utf8'); mpg.setDataSource(dsc); // 策略配置 StrategyConfig strategy = new StrategyConfig(); // strategy.setCapitalMode(true);// 全局大写命名 ORACLE 注意 strategy.setTablePrefix(new String[] { 'tb_', 'tsys_' });// 此处可以修改为您的表前缀 strategy.setNaming(NamingStrategy.underline_to_camel);// 表名生成策略 // strategy.setInclude(new String[] { 'user' }); // 需要生成的表 // strategy.setExclude(new String[]{'test'}); // 排除生成的表 // 自定义实体父类 // strategy.setSuperEntityClass('com.baomidou.demo.TestEntity'); // 自定义实体，公共字段 // strategy.setSuperEntityColumns(new String[] { 'test_id', 'age' }); // 自定义 mapper 父类 // strategy.setSuperMapperClass('com.baomidou.demo.TestMapper'); // 自定义 service 父类 // strategy.setSuperServiceClass('com.baomidou.demo.TestService'); // 自定义 service 实现类父类 // strategy.setSuperServiceImplClass('com.baomidou.demo.TestServiceImpl'); // 自定义 controller 父类 // strategy.setSuperControllerClass('com.baomidou.demo.TestController'); // 【实体】是否生成字段常量（默认 false） // public static final String ID = 'test_id'; // strategy.setEntityColumnConstant(true); // 【实体】是否为构建者模型（默认 false） // public User setName(String name) {this.name = name; return this;} strategy.setEntityBuilderModel(true); mpg.setStrategy(strategy); // 包配置 PackageConfig pc = new PackageConfig(); pc.setParent('com'); pc.setModuleName('warrior'); pc.setController('controler'); pc.setEntity('entity'); pc.setMapper('mapper'); pc.setService('service'); pc.setServiceImpl('serviceImpl'); pc.setXml('mapperXml'); mpg.setPackageInfo(pc); // 注入自定义配置，可以在 VM 中使用 cfg.abc 【可无】 InjectionConfig cfg = new InjectionConfig() { @Override public void initMap() { Map<String, Object> map = new HashMap<String, Object>(); map.put('abc', this.getConfig().getGlobalConfig().getAuthor() + '-mp'); this.setMap(map); } }; // 自定义 xxList.jsp 生成 List<FileOutConfig> focList = new ArrayList<FileOutConfig>();/* focList.add(new FileOutConfig('/template/list.jsp.vm') { @Override public String outputFile(TableInfo tableInfo) { // 自定义输入文件名称 return 'D://my_' + tableInfo.getEntityName() + '.jsp'; } }); cfg.setFileOutConfigList(focList); mpg.setCfg(cfg);*/ // 调整 xml 生成目录演示/* focList.add(new FileOutConfig('/templates/mapper.xml.vm') { @Override public String outputFile(TableInfo tableInfo) { return dirPath + tableInfo.getEntityName() + 'Mapper.xml'; } }); cfg.setFileOutConfigList(focList); */ mpg.setCfg(cfg); // 关闭默认 xml 生成，调整生成 至 根目录/* TemplateConfig tc = new TemplateConfig(); tc.setXml(null); mpg.setTemplate(tc);*/ // 自定义模板配置，可以 copy 源码 mybatis-plus/src/main/resources/templates 下面内容修改， // 放置自己项目的 src/main/resources/templates 目录下, 默认名称一下可以不配置，也可以自定义模板名称 // TemplateConfig tc = new TemplateConfig(); // tc.setController('...'); // tc.setEntity('...'); // tc.setMapper('...'); // tc.setXml('...'); // tc.setService('...'); // tc.setServiceImpl('...'); // 如上任何一个模块如果设置 空 OR Null 将不生成该模块。 // mpg.setTemplate(tc); // 执行生成 mpg.execute(); // 打印注入设置【可无】 System.err.println(mpg.getCfg().getMap().get('abc')); } }

生成的文件如下,只要将对应文件拷到项目对应包即可：

下面把对应类展示出来：

.entity-->Student.java

package com.warrior.entity; import com.baomidou.mybatisplus.enums.IdType;import com.baomidou.mybatisplus.annotations.TableId;import com.baomidou.mybatisplus.annotations.TableField;import com.baomidou.mybatisplus.activerecord.Model;import com.baomidou.mybatisplus.annotations.TableName;import java.io.Serializable; /** * <p> * * </p> * * @author lqh * @since 2018-05-25 */@TableName('tb_student')public class Student extends Model<Student> { private static final long serialVersionUID = 1L; @TableId(value='id', type= IdType.AUTO)private Integer id;@TableField('stu_name')private String stuName;@TableField('stu_number')private String stuNumber;private Integer age; public Integer getId() {return id;} public Student setId(Integer id) {this.id = id;return this;} public String getStuName() {return stuName;} public Student setStuName(String stuName) {this.stuName = stuName;return this;} public String getStuNumber() {return stuNumber;} public Student setStuNumber(String stuNumber) {this.stuNumber = stuNumber;return this;} public Integer getAge() {return age;} public Student setAge(Integer age) {this.age = age;return this;} @Overrideprotected Serializable pkVal() {return this.id;} }

.mapper-->StudentMapper.java

package com.warrior.mapper; import com.warrior.entity.Student;import com.baomidou.mybatisplus.mapper.BaseMapper; /** * <p> * Mapper 接口 * </p> * * @author lqh * @since 2018-05-25 */public interface StudentMapper extends BaseMapper<Student> { }

mapperXml-->StudentMapper.xml(这个文件要放到src/main/resources/mapper)

<?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.warrior.mapper.StudentMapper'> <!-- 通用查询映射结果 --><resultMap type='com.warrior.entity.Student'><id column='id' property='id' /><result column='stu_name' property='stuName' /><result column='stu_number' property='stuNumber' /><result column='age' property='age' /></resultMap> <!-- 通用查询结果列 --> <sql id='Base_Column_List'> id, stu_name AS stuName, stu_number AS stuNumber, age </sql> </mapper>

.service-->IStudentService.java

package com.warrior.service; import com.warrior.entity.Student;import com.baomidou.mybatisplus.service.IService; /** * <p> * 服务类 * </p> * * @author lqh * @since 2018-05-25 */public interface IStudentService extends IService<Student> {}

.serviceImpl-->StudentServiceImpl.java

package com.warrior.serviceImpl; import com.warrior.entity.Student;import com.warrior.mapper.StudentMapper;import com.warrior.service.IStudentService;import com.baomidou.mybatisplus.service.impl.ServiceImpl;import org.springframework.stereotype.Service; /** * <p> * 服务实现类 * </p> * * @author lqh * @since 2018-05-25 */@Servicepublic class StudentServiceImpl extends ServiceImpl<StudentMapper, Student> implements IStudentService {}

.controler-->StudentController.java

package com.warrior.controler; import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping; /** * <p> * 前端控制器 * </p> * * @author lqh * @since 2018-05-25 */@Controller@RequestMapping('/warrior/student')public class StudentController {}

经过以上六步项目已经搭建完成，下面就是写业务代码了，只需要实现controller即可，下面对StudentController.java进行修改：

package com.warrior.controler; import com.warrior.entity.Student;import com.warrior.service.IStudentService;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.ResponseBody; /** * <p> * 前端控制器 * </p> * * @author lqh * @since 2018-05-05 */@Controller@RequestMapping('/warrior/student')public class StudentController { @Autowired IStudentService iStudentService; @RequestMapping('/hello') @ResponseBody public String hello() { //insert Student student = new Student() .setStuName('zhangsan') .setStuNumber('54') .setAge(23); boolean res = iStudentService.insert(student); return res ? 'success' : 'fail'; }}

运行项目，直接访问，搞定！！

项目github地址：https://github.com/LinQiHong66/SpringBoot_MybatisPlus.git

mybatisPlus官网：http://mp.baomidou.com/

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