本文主要讲解mall是如何通过整合Swagger-UI来实现一份相当完善的在线API文档的。
Swagger-UI是HTML, Javascript, CSS的一个集合，可以动态地根据注解生成在线API文档。
@Api：用于修饰Controller类，生成Controller相关文档信息
@ApiOperation：用于修饰Controller类中的方法，生成接口方法相关文档信息
@ApiParam：用于修饰接口中的参数，生成接口参数相关文档信息
@ApiModelProperty：用于修饰实体类的属性，当实体类是请求参数或返回结果时，直接生成相关文档信息
在pom.xml中新增Swagger-UI相关依赖
<!--Swagger-UI API文档生产工具--><dependency><groupId>io.springfox</groupId><artifactId>springfox-swagger2</artifactId><version>2.7.0</version></dependency><dependency><groupId>io.springfox</groupId><artifactId>springfox-swagger-ui</artifactId><version>2.7.0</version></dependency>Copy to clipboardErrorCopied
添加Swagger-UI的Java配置文件
注意：Swagger对生成API文档的范围有三种不同的选择
生成指定包下面的类的API文档
生成有指定注解的类的API文档
生成有指定注解的方法的API文档
packagecom.macro.mall.tiny.config;importorg.springframework.context.annotation.Bean;importorg.springframework.context.annotation.Configuration;importspringfox.documentation.builders.ApiInfoBuilder;importspringfox.documentation.builders.PathSelectors;importspringfox.documentation.builders.RequestHandlerSelectors;importspringfox.documentation.service.ApiInfo;importspringfox.documentation.spi.DocumentationType;importspringfox.documentation.spring.web.plugins.Docket;importspringfox.documentation.swagger2.annotations.EnableSwagger2;/**
* Swagger2API文档的配置
*/@Configuration@EnableSwagger2publicclassSwagger2Config{@BeanpublicDocketcreateRestApi(){returnnewDocket(DocumentationType.SWAGGER_2).apiInfo(apiInfo()).select()//为当前包下controller生成API文档.apis(RequestHandlerSelectors.basePackage("com.macro.mall.tiny.controller"))//为有@Api注解的Controller生成API文档// .apis(RequestHandlerSelectors.withClassAnnotation(Api.class))//为有@ApiOperation注解的方法生成API文档// .apis(RequestHandlerSelectors.withMethodAnnotation(ApiOperation.class)).paths(PathSelectors.any()).build();}privateApiInfoapiInfo(){returnnewApiInfoBuilder().title("SwaggerUI演示").description("mall-tiny").contact("macro").version("1.0").build();}}Copy to clipboardErrorCopied
给PmsBrandController添加Swagger注解
给原有的品牌管理Controller添加上Swagger注解
packagecom.macro.mall.tiny.controller;importcom.macro.mall.tiny.common.api.CommonPage;importcom.macro.mall.tiny.common.api.CommonResult;importcom.macro.mall.tiny.mbg.model.PmsBrand;importcom.macro.mall.tiny.service.PmsBrandService;importio.swagger.annotations.Api;importio.swagger.annotations.ApiOperation;importio.swagger.annotations.ApiParam;importorg.slf4j.Logger;importorg.slf4j.LoggerFactory;importorg.springframework.beans.factory.annotation.Autowired;importorg.springframework.stereotype.Controller;importorg.springframework.validation.BindingResult;importorg.springframework.web.bind.annotation.*;importjava.util.List;/**
* 品牌管理Controller
* Created by macro on 2019/4/19.
*/@Api(tags="PmsBrandController",description="商品品牌管理")@Controller@RequestMapping("/brand")publicclassPmsBrandController{@AutowiredprivatePmsBrandServicebrandService;privatestaticfinalLoggerLOGGER=LoggerFactory.getLogger(PmsBrandController.class);@ApiOperation("获取所有品牌列表")@RequestMapping(value="listAll",method=RequestMethod.GET)@ResponseBodypublicCommonResult<List<PmsBrand>>getBrandList(){returnCommonResult.success(brandService.listAllBrand());}@ApiOperation("添加品牌")@RequestMapping(value="/create",method=RequestMethod.POST)@ResponseBodypublicCommonResultcreateBrand(@RequestBodyPmsBrandpmsBrand){CommonResultcommonResult;intcount=brandService.createBrand(pmsBrand);if(count==1){commonResult=CommonResult.success(pmsBrand);LOGGER.debug("createBrand success:{}",pmsBrand);}else{commonResult=CommonResult.failed("操作失败");LOGGER.debug("createBrand failed:{}",pmsBrand);}returncommonResult;}@ApiOperation("更新指定id品牌信息")@RequestMapping(value="/update/{id}",method=RequestMethod.POST)@ResponseBodypublicCommonResultupdateBrand(@PathVariable("id")Longid,@RequestBodyPmsBrandpmsBrandDto,BindingResultresult){CommonResultcommonResult;intcount=brandService.updateBrand(id,pmsBrandDto);if(count==1){commonResult=CommonResult.success(pmsBrandDto);LOGGER.debug("updateBrand success:{}",pmsBrandDto);}else{commonResult=CommonResult.failed("操作失败");LOGGER.debug("updateBrand failed:{}",pmsBrandDto);}returncommonResult;}@ApiOperation("删除指定id的品牌")@RequestMapping(value="/delete/{id}",method=RequestMethod.GET)@ResponseBodypublicCommonResultdeleteBrand(@PathVariable("id")Longid){intcount=brandService.deleteBrand(id);if(count==1){LOGGER.debug("deleteBrand success :id={}",id);returnCommonResult.success(null);}else{LOGGER.debug("deleteBrand failed :id={}",id);returnCommonResult.failed("操作失败");}}@ApiOperation("分页查询品牌列表")@RequestMapping(value="/list",method=RequestMethod.GET)@ResponseBodypublicCommonResult<CommonPage<PmsBrand>>listBrand(@RequestParam(value="pageNum",defaultValue="1")@ApiParam("页码")IntegerpageNum,@RequestParam(value="pageSize",defaultValue="3")@ApiParam("每页数量")IntegerpageSize){List<PmsBrand>brandList=brandService.listBrand(pageNum,pageSize);returnCommonResult.success(CommonPage.restPage(brandList));}@ApiOperation("获取指定id的品牌详情")@RequestMapping(value="/{id}",method=RequestMethod.GET)@ResponseBodypublicCommonResult<PmsBrand>brand(@PathVariable("id")Longid){returnCommonResult.success(brandService.getBrand(id));}}Copy to clipboardErrorCopied
CommentGenerator为MyBatis Generator的自定义注释生成器，修改addFieldComment方法使其生成Swagger的@ApiModelProperty注解来取代原来的方法注释，添加addJavaFileComment方法，使其能在import中导入@ApiModelProperty，否则需要手动导入该类，在需要生成大量实体类时，是一件非常麻烦的事。
packagecom.macro.mall.tiny.mbg;importorg.mybatis.generator.api.IntrospectedColumn;importorg.mybatis.generator.api.IntrospectedTable;importorg.mybatis.generator.api.dom.java.CompilationUnit;importorg.mybatis.generator.api.dom.java.Field;importorg.mybatis.generator.api.dom.java.FullyQualifiedJavaType;importorg.mybatis.generator.internal.DefaultCommentGenerator;importorg.mybatis.generator.internal.util.StringUtility;importjava.util.Properties;/**
* 自定义注释生成器
* Created by macro on 2018/4/26.
*/publicclassCommentGeneratorextendsDefaultCommentGenerator{privatebooleanaddRemarkComments=false;privatestaticfinalStringEXAMPLE_SUFFIX="Example";privatestaticfinalStringAPI_MODEL_PROPERTY_FULL_CLASS_NAME="io.swagger.annotations.ApiModelProperty";/**
* 设置用户配置的参数
*/@OverridepublicvoidaddConfigurationProperties(Propertiesproperties){super.addConfigurationProperties(properties);this.addRemarkComments=StringUtility.isTrue(properties.getProperty("addRemarkComments"));}/**
* 给字段添加注释
*/@OverridepublicvoidaddFieldComment(Fieldfield,IntrospectedTableintrospectedTable,IntrospectedColumnintrospectedColumn){Stringremarks=introspectedColumn.getRemarks();//根据参数和备注信息判断是否添加备注信息if(addRemarkComments&&StringUtility.stringHasValue(remarks)){// addFieldJavaDoc(field, remarks);//数据库中特殊字符需要转义if(remarks.contains("\"")){remarks=remarks.replace("\"","'");}//给model的字段添加swagger注解field.addJavaDocLine("@ApiModelProperty(value = \""+remarks+"\")");}}/**
* 给model的字段添加注释
*/privatevoidaddFieldJavaDoc(Fieldfield,Stringremarks){//文档注释开始field.addJavaDocLine("/**");//获取数据库字段的备注信息String[]remarkLines=remarks.split(System.getProperty("line.separator"));for(StringremarkLine:remarkLines){field.addJavaDocLine(" * "+remarkLine);}addJavadocTag(field,false);field.addJavaDocLine(" */");}@OverridepublicvoidaddJavaFileComment(CompilationUnitcompilationUnit){super.addJavaFileComment(compilationUnit);//只在model中添加swagger注解类的导入if(!compilationUnit.isJavaInterface()&&!compilationUnit.getType().getFullyQualifiedName().contains(EXAMPLE_SUFFIX)){compilationUnit.addImportedType(newFullyQualifiedJavaType(API_MODEL_PROPERTY_FULL_CLASS_NAME));}}}Copy to clipboardErrorCopied
运行com.macro.mall.tiny.mbg.Generator的main方法，重新生成mbg中的代码，可以看到PmsBrand类中已经自动根据数据库注释添加了@ApiModelProperty注解
接口地址：http://localhost:8080/swagger-ui.html
