Spring Boot集成Mybatis-Plus
1. pom.xml导包
<!--lombok-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
<!--mysql驱动-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<!--druid连接池-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
<version>1.2.8</version>
</dependency>
<!--mybatis-plus-->
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>3.4.3.4</version>
</dependency>
<!--mybatis-plus代码生成器-->
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-generator</artifactId>
<version>3.5.1</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
</dependency>
<dependency>
<groupId>org.freemarker</groupId>
<artifactId>freemarker</artifactId>
</dependency>2.application.properties
spring.application.name=springboot-mybatis-plus-proxy
server.port=8088
#datasource
spring.datasource.druid.url=jdbc:mysql://localhost:3308/demo?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=UTC
spring.datasource.druid.username=root
spring.datasource.druid.password=123456
spring.datasource.druid.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.druid.initial-size=30
spring.datasource.druid.max-active=100
spring.datasource.druid.min-idle=10
spring.datasource.druid.max-wait=60000
spring.datasource.druid.time-between-eviction-runs-millis=60000
spring.datasource.druid.min-evictable-idle-time-millis=300000
spring.datasource.druid.validation-query=SELECT 1 FROM DUAL
spring.datasource.druid.test-while-idle=true
spring.datasource.druid.test-on-borrow=false
spring.datasource.druid.test-on-return=false
spring.datasource.druid.filters=stat,wall
#mybatis-plus config
mybatis-plus.configuration.map-underscore-to-camel-case=true
mybatis-plus.configuration.auto-mapping-behavior=full
mybatis-plus.mapper-locations=classpath*:mapper/**/*.Mapper.xml3.启动类添加扫描mapper注解（在写完mapper文件或生成代码之后的mapper路径）：
4.编写mapper以及相关controller、service相关代码，此处本人使用代码生成器生成MybatisPlusGenerator.java:
import java.util.Collections;
import com.baomidou.mybatisplus.generator.FastAutoGenerator;
import com.baomidou.mybatisplus.generator.config.DataSourceConfig;
import com.baomidou.mybatisplus.generator.config.OutputFile;
import com.baomidou.mybatisplus.generator.config.converts.MySqlTypeConvert;
import com.baomidou.mybatisplus.generator.config.querys.MySqlQuery;
import com.baomidou.mybatisplus.generator.config.rules.DateType;
import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;
import com.baomidou.mybatisplus.generator.engine.FreemarkerTemplateEngine;
import com.baomidou.mybatisplus.generator.keywords.MySqlKeyWordsHandler;
public class MybatisPlusGenerator {
private static final DataSourceConfig.Builder dataSourceConfig = new DataSourceConfig
.Builder("jdbc:mysql://localhost:3308/demo?useUnicode=true&characterEncoding=utf-8&useSSL=false", "root", "123456")
.dbQuery(new MySqlQuery())
.schema("Demonor-Proxy")
.typeConvert(new MySqlTypeConvert())
.keyWordsHandler(new MySqlKeyWordsHandler());
public static void main(String[] args) {
String projectPath = System.getProperty("user.dir");
String javaRoot = (projectPath+"/src/main/java").replaceAll("\\\\", "/");
String resourcesRoot = (projectPath+"/src/main/resources").replaceAll("\\\\", "/");
String[] tables = new String[] {"user","role"};
//System.out.println(outputDir);
//代码生成器
FastAutoGenerator.create(dataSourceConfig).globalConfig((scanner,builder)->{
builder.fileOverride().outputDir(javaRoot)//指定输出目录
.author("Demonor")//作者名
.dateType(DateType.TIME_PACK)//时间策略，DateType.ONLY_DATE 默认值: DateType.TIME_PACK
.commentDate("yyyy-MM-dd")//注释日期，默认值: yyyy-MM-dd
.build();
}).packageConfig((scanner,builder)->{
builder.parent("com.lee.demo.mybatisplus_datasourceproxy")
.controller("controller") //默认：controller
.service("service") //默认：service
.serviceImpl("service.impl") //默认：service.impl
.entity("entity") //默认：entity
.mapper("mapper") //默认：mapper
.xml(null) //默认：mapper.xml目录
.pathInfo(Collections.singletonMap(OutputFile.mapperXml, resourcesRoot+"/mapper")) //指定xml输出目录
.build();
}).templateConfig((scanner, builder)->{
//配置相关模板，不配置则按照默认
builder.controller("/templates/controller.java").build();
//不需要生成xml、controller、service、serviceImpl
// builder.mapperXml(null)
// .controller(null)
// .service(null)
// .serviceImpl(null)
// .entity(null)
// .mapper(null)
// .build();
}).strategyConfig((scanner, builder)->{
builder.enableCapitalMode()
.enableSkipView().addInclude(tables) //设置需要生成的表名
.entityBuilder()
.enableLombok()
.naming(NamingStrategy.underline_to_camel)
.columnNaming(NamingStrategy.underline_to_camel)
.superClass("com.baomidou.mybatisplus.extension.activerecord.Model")
.build();
}).templateEngine(new FreemarkerTemplateEngine()).execute();
}
}
这里我添加了自定义的Controller控制器模板，可以在依赖的mybatis-plus-generator.jar下复制相关templates：
package ${package.Controller};
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
/**
* <p>
* ${table.comment!} 前端控制器
* </p>
*
* @author ${author}
* @since ${date}
*/
@RestController
@RequestMapping("<#if package.ModuleName?? && package.ModuleName != "">/${package.ModuleName}</#if>/<#if controllerMappingHyphenStyle??>${controllerMappingHyphen}<#else>${table.entityPath}</#if>")
<#if kotlin>
class ${table.controllerName}<#if superControllerClass??> : ${superControllerClass}()</#if>
<#else>
<#if superControllerClass??>
public class ${table.controllerName} extends ${superControllerClass} {
<#else>
public class ${table.controllerName} {
</#if>
@GetMapping("index")
public String index() {
return "index";
}
}
</#if>
执行代码生成器，生成了user表和role表的相关代码，如图：
5.测试：
至此，Spring Boot集成Mybatis-Plus演示完毕
