#yyds干货盘点#mybatis-plus学习与实践代码生成器整合swagger2生成CRUD接口 _学习与实践

博观而约取，厚积而薄发。这篇文章主要讲述#yyds干货盘点#mybatis-plus学习与实践代码生成器整合swagger2生成CRUD接口相关的知识，希望能为你提供帮助。
最近看到一句话：自从用了mybatis-plus,泡妞时间一大把了。是不是很羡慕，听名字就知道plus就是mybatis增强版，就跟iphone和iphone-plus一样，iphone-plus肯定更好用。
现在我们就一起先了解一下代码生成器，官网上有模板，网上也有很多博客，但是拿下来后会发现，虽然生成表对应的各个类了，但是并没有具体的CRUD方法，现在我们就看看官方gitee上面的源码，试着搭建一个代码生成类。
一、先搭建一个项目，引入基本依赖

< dependencies> < dependency> < groupId> org.springframework.boot< /groupId> < artifactId> spring-boot-starter-web< /artifactId> < /dependency> < !-- jdbc --> < dependency> < groupId> org.springframework.boot< /groupId> < artifactId> spring-boot-starter-jdbc< /artifactId> < /dependency> < dependency> < groupId> mysql< /groupId> < artifactId> mysql-connector-java< /artifactId> < /dependency> < dependency> < groupId> org.projectlombok< /groupId> < artifactId> lombok< /artifactId> < optional> true< /optional> < /dependency> < dependency> < groupId> com.baomidou< /groupId> < artifactId> mybatis-plus-boot-starter< /artifactId> < version> 3.1.1< /version> < /dependency> < dependency> < groupId> com.baomidou< /groupId> < artifactId> mybatis-plus-generator< /artifactId> < version> 3.1.1< /version> < /dependency> < dependency> < groupId> org.freemarker< /groupId> < artifactId> freemarker< /artifactId> < version> 2.3.28< /version> < /dependency> < dependency> < groupId> org.springframework.boot< /groupId> < artifactId> spring-boot-starter-test< /artifactId> < scope> test< /scope> < /dependency> < !-- swagger2 --> < dependency> < groupId> io.springfox< /groupId> < artifactId> springfox-swagger2< /artifactId> < version> 2.2.2< /version> < /dependency> < dependency> < groupId> io.springfox< /groupId> < artifactId> springfox-swagger-ui< /artifactId> < version> 2.2.2< /version> < /dependency> < /dependencies>

二、代码生成器代码（有注释具体代表什么意思）

public class Generator public static void main(String[] args) AutoGenerator generator = new AutoGenerator(); // 全局变量配置 GlobalConfig gc = new GlobalConfig(); String projectPath = System.getProperty("user.dir"); //当前项目 gc.setOutputDir(projectPath+"/src/main/java"); // 输出路径 gc.setFileOverride(false); // 默认 false ,是否覆盖已生成文件 gc.setOpen(false); //默认true ,是否打开输出目录 gc.setEnableCache(false); // 默认false,是否开启二级缓存 gc.setAuthor("zhb"); // 作者 gc.setSwagger2(true); //默认false gc.setBaseResultMap(true); // 默认false gc.setDateType(DateType.TIME_PACK); // 时间策略默认TIME_PACK gc.setBaseColumnList(true); //默认false和basemodel相似 gc.setEntityName("%s"); gc.setControllerName("%sController"); gc.setServiceName("%sService"); gc.setServiceImplName("%sServiceImpl"); gc.setMapperName("%sMapper"); gc.setXmlName("%sMapper"); gc.setIdType(IdType.ID_WORKER_STR); // 指定生成的主键类型 generator.setGlobalConfig(gc); // 数据源配置 DataSourceConfig dc = new DataSourceConfig(); dc.setDbQuery(new MySqlQuery()); // 数据库信息查询 //默认mysql dc.setDbType(DbType.MYSQL); // 数据库类型 dc.setTypeConvert(new MySqlTypeConvert()); //类型转换默认mysql dc.setUrl("jdbc:mysql://localhost/mybatis_plus?serverTimezone=CTT& useUnicode=true& characterEncoding=utf-8& useSSL=false"); dc.setDriverName("com.mysql.cj.jdbc.Driver"); dc.setUsername("root"); dc.setPassword("123456"); generator.setDataSource(dc); // 包配置 PackageConfig pc = new PackageConfig(); pc.setParent("com.zhoubin.mybatisplus"); //pc.setModuleName(""); //此处是所属模块名称 //pc.setEntity("entity"); //默认entity,controller,service,service.impl,mapper,mapper.xml generator.setPackageInfo(pc); // 自定义配置 InjectionConfig cfg = new InjectionConfig() @Override public void initMap() // to do nothing; /** * 将xml生成到resource下面 */ String templatePath = "/templates/mapper.xml.ftl"; // framemark // 自定义输出配置 List< FileOutConfig> focList = new ArrayList< > (); // 自定义配置会被优先输出 focList.add(new FileOutConfig(templatePath) @Override public String outputFile(TableInfo tableInfo) // 自定义输出文件名，如果你 Entity 设置了前后缀、此处注意 xml 的名称会跟着发生变化！！ return projectPath + "/src/main/resources/mapper/" //+ pc.getModuleName() + "/" + tableInfo.getEntityName() + "Mapper" + StringPool.DOT_XML; ); cfg.setFileOutConfigList(focList); generator.setCfg(cfg); // 配置模板 TemplateConfig tc = new TemplateConfig(); tc.setController("templates/controller.java"); // /templates/entity.java 模板路径配置，默认再templates tc.setXml(""); generator.setTemplate(tc); // 数据库表配置 StrategyConfig sc = new StrategyConfig(); sc.setCapitalMode(false); //是否大写命名默认false sc.setSkipView(true); //是否跳过试图默认false sc.setNaming(NamingStrategy.underline_to_camel); // 表映射驼峰命名 sc.setColumnNaming(NamingStrategy.underline_to_camel); // 字段映射驼峰 sc.setEntityLombokModel(true); //默认false sc.setRestControllerStyle(true); // 默认false sc.setEntitySerialVersionUID(true); //默认true sc.setEntityColumnConstant(true); //默认false sc.setInclude("student"); //表名，用，隔开需要生产 //sc.setExclude(""); //不需要生成二选一 sc.setEntityTableFieldAnnotationEnable(true); // 默认false 注释 sc.setControllerMappingHyphenStyle(false); //默认false sc.setLogicDeleteFieldName("status"); // 逻辑删除字段名称 generator.setStrategy(sc); // 模板引擎 generator.setTemplateEngine(new FreemarkerTemplateEngine()); generator.execute();

三、支持swagger2生成api文档

@Configuration @EnableSwagger2 public class Swagger2 @Bean public Docket createRestApi()return new Docket(DocumentationType.SWAGGER_2) .apiInfo(apiInfo()) .select() .apis(RequestHandlerSelectors.basePackage("com.zhoubin.mybatisplus.controller")) .paths(PathSelectors.any()) .build(); private ApiInfo apiInfo()return new ApiInfoBuilder().title("mybaisplus") .description("mybatisplus学习测试") .contact("binzh303@163.com") .version("1.0") .build();

四、重写freemarker模板，生成CRUD接口，并生成api文档

package $package.Controller; import org.springframework.web.bind.annotation.*; < #if restControllerStyle> import org.springframework.web.bind.annotation.RestController; < #else> import org.springframework.stereotype.Controller; < /#if> import org.springframework.beans.factory.annotation.Autowired; import io.swagger.annotations.Api; import io.swagger.annotations.*; import lombok.extern.slf4j.Slf4j; import java.util.*; import com.zhoubin.mybatisplus.common.ResultMessage; import$package.Service.$table.serviceName; import$package.Entity.$table.entityName; < #if superControllerClassPackage??> import $superControllerClassPackage; < /#if> /** * < p> * $table.comment! 前端控制器 * < /p> * * @author $author * @since $date */ < #if restControllerStyle> @RestController < #else> @Controller < /#if> @Slf4j @Api(value = "https://www.songbingjia.com/android/$table.nameCRUD接口") @RequestMapping("< #if 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> @Autowired private $table.serviceName $table.nameService; @ApiOperation(value = "https://www.songbingjia.com/android/获取$table.name列表",notes="") @ApiImplicitParam(name = "map", value = "https://www.songbingjia.com/android/$table.name实体中的参数", required = true, dataType = "Map") @GetMapping("/") public String $table.nameList(@RequestParam Map< String,Object> map) throws Exception Collection< $table.entityName> $table.nameList = $table.nameService.listByMap(map); ResultMessage resultMessage = new ResultMessage($table.nameList); return String.valueOf(resultMessage); @ApiOperation(value = "https://www.songbingjia.com/android/修改$table.name",notes="根据id修改$table.name") @ApiImplicitParam(name = "$table.name", value = "https://www.songbingjia.com/android/$table.name实体", required = true, dataType = "Student") @PutMapping("/") public String $table.nameUpdate(@RequestBody$table.entityName $table.name) throws Exception Boolean flag = $table.nameService.updateById($table.name); ResultMessage resultMessage = new ResultMessage(flag); return String.valueOf(resultMessage); @ApiOperation(value = "https://www.songbingjia.com/android/删除$table.name",notes="根据id删除$table.name") @ApiImplicitParam(name = "id", value = "https://www.songbingjia.com/android/$table.nameid", required = true, dataType = "< #list table.fields as field> < #if field.keyFlag == true> $field.columnType?lower_case?cap_first< /#if> < /#list> ") @DeleteMapping("/id") public String $table.nameDelete(@PathVariable < #list table.fields as field> < #if field.keyFlag == true> $field.columnType?lower_case?cap_first< /#if> < /#list> id) throws Exception // $table Boolean flag = $table.nameService.removeById(id); ResultMessage resultMessage = new ResultMessage(flag); return String.valueOf(resultMessage); @ApiOperation(value = "https://www.songbingjia.com/android/添加$table.name",notes="新增一条$table.name") @ApiImplicitParam(name = "$table.name", value = "https://www.songbingjia.com/android/$table.name实体", required = true, dataType = "$table.name") @PostMapping("") public String $table.nameAdd(@RequestBody$table.entityName $table.name) throws Exception Boolean flag = $table.nameService.save($table.name); ResultMessage resultMessage = new ResultMessage(flag); return String.valueOf(resultMessage); < /#if>

然后运行生成器代码，接下来我们看看生成的CRUD接口

package com.zhoubin.mybatisplus.controller; import org.springframework.web.bind.annotation.*; import org.springframework.web.bind.annotation.RestController; import org.springframework.beans.factory.annotation.Autowired; import io.swagger.annotations.Api; import io.swagger.annotations.*; import lombok.extern.slf4j.Slf4j; import java.util.*; import com.zhoubin.mybatisplus.common.ResultMessage; importcom.zhoubin.mybatisplus.service.StudentService; importcom.zhoubin.mybatisplus.entity.Student; /** * < p> *前端控制器 * < /p> * * @author zhb * @since 2019-05-27 */ @RestController @Slf4j @Api(value = "https://www.songbingjia.com/android/studentCRUD接口") @RequestMapping("/student") public class StudentController @Autowired private StudentService studentService; @ApiOperation(value = "https://www.songbingjia.com/android/获取student列表",notes="") @ApiImplicitParam(name = "map", value = "https://www.songbingjia.com/android/student实体中的参数", required = true, dataType = "Map") @GetMapping("/") public String studentList(@RequestParam Map< String,Object> map) throws Exception Collection< Student> studentList = studentService.listByMap(map); ResultMessage resultMessage = new ResultMessage(studentList); return String.valueOf(resultMessage); @ApiOperation(value = "https://www.songbingjia.com/android/修改student",notes="根据id修改student") @ApiImplicitParam(name = "student", value = "https://www.songbingjia.com/android/student实体", required = true, dataType = "Student") @PutMapping("/") public String studentUpdate(@RequestBodyStudent student) throws Exception Boolean flag = studentService.updateById(student); ResultMessage resultMessage = new ResultMessage(flag); return String.valueOf(resultMessage); @ApiOperation(value = "https://www.songbingjia.com/android/删除student",notes="根据id删除student") @ApiImplicitParam(name = "id", value = "https://www.songbingjia.com/android/studentid", required = true, dataType = "String") @DeleteMapping("/id") public String studentDelete(@PathVariable String id) throws Exception Boolean flag = studentService.removeById(id); ResultMessage resultMessage = new ResultMessage(flag); return String.valueOf(resultMessage); @ApiOperation(value = "https://www.songbingjia.com/android/添加student",notes="新增一条student") @ApiImplicitParam(name = "student", value = "https://www.songbingjia.com/android/student实体", required = true, dataType = "student") @PostMapping("") public String studentAdd(@RequestBodyStudent student) throws Exception Boolean flag = studentService.save(student); ResultMessage resultMessage = new ResultMessage(flag); return String.valueOf(resultMessage);

【#yyds干货盘点#mybatis-plus学习与实践代码生成器整合swagger2生成CRUD接口】最后，再来看一下生成的api文档，在浏览器输入http://localhost:8080/swagger-ui.html，看看效果

文章图片
总结：
1、如果需要别的接口，可以在freemarker模板中自定义生成类型，就可以生成你想要的接口。
2、关于@Repository、@Mapper、@MapperScan的几个注解的解释：@Repository是spring的注解，目的是将dao类注解成一个bean，交给spring管理。@Mapper是mybatis的注解，目的也是注成bean。@Mapper可以将xml和dao放在不同路径。@MapperScan注解在启动类上，注解了@MapperScan就不用重复在dao层注解@Mapper了。