神器 SpringDoc 横空出世！最适合 SpringBoot 的API文档工具来了！

深碍√TFBOYSˉ_ 2023-09-30 16:52 2阅读 0赞

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> 之前在SpringBoot项目中一直使用的是SpringFox提供的Swagger库，上了下官网发现已经有接近两年没出新版本了！前几天[升级了SpringBoot 2.6.x][SpringBoot 2.6.x] 版本，发现这个库的兼容性也越来越不好了，有的常用注解属性被废弃了居然都没提供替代！无意中发现了另一款Swagger库`SpringDoc`，试用了一下非常不错，推荐给大家！

SpringBoot实战电商项目mall（50k+star）地址：[github.com/macrozheng/…][github.com_macrozheng]

### SpringDoc简介 ###

SpringDoc是一款可以结合SpringBoot使用的API文档生成工具，基于`OpenAPI 3`，目前在Github上已有`1.7K+Star`，更新发版还是挺勤快的，是一款更好用的Swagger库！值得一提的是SpringDoc不仅支持Spring WebMvc项目，还可以支持Spring WebFlux项目，甚至Spring Rest和Spring Native项目，总之非常强大，下面是一张SpringDoc的架构图。

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### 使用 ###

> 接下来我们介绍下SpringDoc的使用，使用的是之前集成SpringFox的`mall-tiny-swagger`项目，我将把它改造成使用SpringDoc。

#### 集成 ####

> 首先我们得集成SpringDoc，在`pom.xml`中添加它的依赖即可，开箱即用，无需任何配置。

<dependency>
        <groupId>org.springdoc</groupId>
        <artifactId>springdoc-openapi-ui</artifactId>
        <version>1.6.6</version>
    </dependency>
    复制代码

#### 从SpringFox迁移 ####

*  我们先来看下经常使用的Swagger注解，看看SpringFox的和SpringDoc的有啥区别，毕竟对比已学过的技术能该快掌握新技术；

<table> 
 <thead> 
  <tr> 
   <th>SpringFox</th> 
   <th>SpringDoc</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td>@Api</td> 
   <td>@Tag</td> 
  </tr> 
  <tr> 
   <td>@ApiIgnore</td> 
   <td>@Parameter(hidden = true)<code>or</code>@Operation(hidden = true)<code>or</code>@Hidden</td> 
  </tr> 
  <tr> 
   <td>@ApiImplicitParam</td> 
   <td>@Parameter</td> 
  </tr> 
  <tr> 
   <td>@ApiImplicitParams</td> 
   <td>@Parameters</td> 
  </tr> 
  <tr> 
   <td>@ApiModel</td> 
   <td>@Schema</td> 
  </tr> 
  <tr> 
   <td>@ApiModelProperty</td> 
   <td>@Schema</td> 
  </tr> 
  <tr> 
   <td>@ApiOperation(value = "foo", notes = "bar")</td> 
   <td>@Operation(summary = "foo", description = "bar")</td> 
  </tr> 
  <tr> 
   <td>@ApiParam</td> 
   <td>@Parameter</td> 
  </tr> 
  <tr> 
   <td>@ApiResponse(code = 404, message = "foo")</td> 
   <td>ApiResponse(responseCode = "404", description = "foo")</td> 
  </tr> 
 </tbody> 
</table>

*  接下来我们对之前Controller中使用的注解进行改造，对照上表即可，之前在`@Api`注解中被废弃了好久又没有替代的`description`属性终于被支持了！

/**
     * 品牌管理Controller
     * Created by macro on 2019/4/19.
     */
    @Tag(name = "PmsBrandController", description = "商品品牌管理")
    @Controller
    @RequestMapping("/brand")
    public class PmsBrandController {
        @Autowired
        private PmsBrandService brandService;
    
        private static final Logger LOGGER = LoggerFactory.getLogger(PmsBrandController.class);
    
        @Operation(summary = "获取所有品牌列表",description = "需要登录后访问")
        @RequestMapping(value = "listAll", method = RequestMethod.GET)
        @ResponseBody
        public CommonResult<List<PmsBrand>> getBrandList() {
            return CommonResult.success(brandService.listAllBrand());
        }
    
        @Operation(summary = "添加品牌")
        @RequestMapping(value = "/create", method = RequestMethod.POST)
        @ResponseBody
        @PreAuthorize("hasRole('ADMIN')")
        public CommonResult createBrand(@RequestBody PmsBrand pmsBrand) {
            CommonResult commonResult;
            int count = 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);
            }
            return commonResult;
        }
    
        @Operation(summary = "更新指定id品牌信息")
        @RequestMapping(value = "/update/{id}", method = RequestMethod.POST)
        @ResponseBody
        @PreAuthorize("hasRole('ADMIN')")
        public CommonResult updateBrand(@PathVariable("id") Long id, @RequestBody PmsBrand pmsBrandDto, BindingResult result) {
            CommonResult commonResult;
            int count = 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);
            }
            return commonResult;
        }
    
        @Operation(summary = "删除指定id的品牌")
        @RequestMapping(value = "/delete/{id}", method = RequestMethod.GET)
        @ResponseBody
        @PreAuthorize("hasRole('ADMIN')")
        public CommonResult deleteBrand(@PathVariable("id") Long id) {
            int count = brandService.deleteBrand(id);
            if (count == 1) {
                LOGGER.debug("deleteBrand success :id={}", id);
                return CommonResult.success(null);
            } else {
                LOGGER.debug("deleteBrand failed :id={}", id);
                return CommonResult.failed("操作失败");
            }
        }
    
        @Operation(summary = "分页查询品牌列表")
        @RequestMapping(value = "/list", method = RequestMethod.GET)
        @ResponseBody
        @PreAuthorize("hasRole('ADMIN')")
        public CommonResult<CommonPage<PmsBrand>> listBrand(@RequestParam(value = "pageNum", defaultValue = "1")
                                                            @Parameter(description = "页码") Integer pageNum,
                                                            @RequestParam(value = "pageSize", defaultValue = "3")
                                                            @Parameter(description = "每页数量") Integer pageSize) {
            List<PmsBrand> brandList = brandService.listBrand(pageNum, pageSize);
            return CommonResult.success(CommonPage.restPage(brandList));
        }
    
        @Operation(summary = "获取指定id的品牌详情")
        @RequestMapping(value = "/{id}", method = RequestMethod.GET)
        @ResponseBody
        @PreAuthorize("hasRole('ADMIN')")
        public CommonResult<PmsBrand> brand(@PathVariable("id") Long id) {
            return CommonResult.success(brandService.getBrand(id));
        }
    }
    复制代码

*  接下来进行SpringDoc的配置，使用`OpenAPI`来配置基础的文档信息，通过`GroupedOpenApi`配置分组的API文档，SpringDoc支持直接使用接口路径进行配置。

/**
     * SpringDoc API文档相关配置
     * Created by macro on 2022/3/4.
     */
    @Configuration
    public class SpringDocConfig {
        @Bean
        public OpenAPI mallTinyOpenAPI() {
            return new OpenAPI()
                    .info(new Info().title("Mall-Tiny API")
                            .description("SpringDoc API 演示")
                            .version("v1.0.0")
                            .license(new License().name("Apache 2.0").url("https://github.com/macrozheng/mall-learning")))
                    .externalDocs(new ExternalDocumentation()
                            .description("SpringBoot实战电商项目mall（50K+Star）全套文档")
                            .url("http://www.macrozheng.com"));
        }
    
        @Bean
        public GroupedOpenApi publicApi() {
            return GroupedOpenApi.builder()
                    .group("brand")
                    .pathsToMatch("/brand/**")
                    .build();
        }
    
        @Bean
        public GroupedOpenApi adminApi() {
            return GroupedOpenApi.builder()
                    .group("admin")
                    .pathsToMatch("/admin/**")
                    .build();
        }
    }
    复制代码

#### 结合SpringSecurity使用 ####

*  由于我们的项目集成了SpringSecurity，需要通过JWT认证头进行访问，我们还需配置好SpringDoc的白名单路径，主要是Swagger的资源路径；

/**
     * SpringSecurity的配置
     * Created by macro on 2018/4/26.
     */
    @Configuration
    @EnableWebSecurity
    @EnableGlobalMethodSecurity(prePostEnabled = true)
    public class SecurityConfig extends WebSecurityConfigurerAdapter {                                              
    
        @Override
        protected void configure(HttpSecurity httpSecurity) throws Exception {
            httpSecurity.csrf()// 由于使用的是JWT，我们这里不需要csrf
                    .disable()
                    .sessionManagement()// 基于token，所以不需要session
                    .sessionCreationPolicy(SessionCreationPolicy.STATELESS)
                    .and()
                    .authorizeRequests()
                    .antMatchers(HttpMethod.GET, // Swagger的资源路径需要允许访问
                            "/",   
                            "/swagger-ui.html",
                            "/swagger-ui/",
                            "/*.html",
                            "/favicon.ico",
                            "/**/*.html",
                            "/**/*.css",
                            "/**/*.js",
                            "/swagger-resources/**",
                            "/v3/api-docs/**"
                    )
                    .permitAll()
                    .antMatchers("/admin/login")// 对登录注册要允许匿名访问
                    .permitAll()
                    .antMatchers(HttpMethod.OPTIONS)//跨域请求会先进行一次options请求
                    .permitAll()
                    .anyRequest()// 除上面外的所有请求全部需要鉴权认证
                    .authenticated();
            
        }
    
    }
    复制代码

*  然后在`OpenAPI`对象中通过`addSecurityItem`方法和`SecurityScheme`对象，启用基于JWT的认证功能。

/**
     * SpringDoc API文档相关配置
     * Created by macro on 2022/3/4.
     */
    @Configuration
    public class SpringDocConfig {
        private static final String SECURITY_SCHEME_NAME = "BearerAuth";
        @Bean
        public OpenAPI mallTinyOpenAPI() {
            return new OpenAPI()
                    .info(new Info().title("Mall-Tiny API")
                            .description("SpringDoc API 演示")
                            .version("v1.0.0")
                            .license(new License().name("Apache 2.0").url("https://github.com/macrozheng/mall-learning")))
                    .externalDocs(new ExternalDocumentation()
                            .description("SpringBoot实战电商项目mall（50K+Star）全套文档")
                            .url("http://www.macrozheng.com"))
                    .addSecurityItem(new SecurityRequirement().addList(SECURITY_SCHEME_NAME))
                    .components(new Components()
                                    .addSecuritySchemes(SECURITY_SCHEME_NAME,
                                            new SecurityScheme()
                                                    .name(SECURITY_SCHEME_NAME)
                                                    .type(SecurityScheme.Type.HTTP)
                                                    .scheme("bearer")
                                                    .bearerFormat("JWT")));
        }
    }
    复制代码

#### 测试 ####

*  接下来启动项目就可以访问Swagger界面了，访问地址：[http://localhost:8088/swagger-ui.html][http_localhost_8088_swagger-ui.html]

![format_png 2][]

*  我们先通过登录接口进行登录，可以发现这个版本的Swagger返回结果是支持高亮显示的，版本明显比SpringFox来的新；

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*  然后通过认证按钮输入获取到的认证头信息，注意这里不用加`bearer`前缀；

![format_png 4][]

*  之后我们就可以愉快地访问需要登录认证的接口了；

![format_png 5][]

*  看一眼请求参数的文档说明，还是熟悉的Swagger样式！

![format_png 6][]

#### 常用配置 ####

SpringDoc还有一些常用的配置可以了解下，更多配置可以参考官方文档。

springdoc:
      swagger-ui:
        # 修改Swagger UI路径
        path: /swagger-ui.html
        # 开启Swagger UI界面
        enabled: true
      api-docs:
        # 修改api-docs路径
        path: /v3/api-docs
        # 开启api-docs
        enabled: true
      # 配置需要生成接口文档的扫描包
      packages-to-scan: com.macro.mall.tiny.controller
      # 配置需要生成接口文档的接口路径
      paths-to-match: /brand/**,/admin/**
    复制代码

### 总结 ###

在SpringFox的Swagger库好久不出新版的情况下，迁移到SpringDoc确实是一个更好的选择。今天体验了一把SpringDoc，确实很好用，和之前熟悉的用法差不多，学习成本极低。而且SpringDoc能支持WebFlux之类的项目，功能也更加强大，使用SpringFox有点卡手的朋友可以迁移到它试试！

[format_png]: https://img-blog.csdnimg.cn/img_convert/01fea3875dae8e36747ee58d33b106f0.webp?x-oss-process=image/format,png
[SpringBoot 2.6.x]: https://juejin.cn/post/7077731765737472037
[github.com_macrozheng]: https://link.juejin.cn/?target=https%3A%2F%2Fgithub.com%2Fmacrozheng%2Fmall
[format_png 1]: https://img-blog.csdnimg.cn/img_convert/d74e5d5f956aba7b5f2f54bcbe0ecfa1.webp?x-oss-process=image/format,png
[http_localhost_8088_swagger-ui.html]: https://link.juejin.cn/?target=http%3A%2F%2Flocalhost%3A8088%2Fswagger-ui.html
[format_png 2]: https://img-blog.csdnimg.cn/img_convert/11b63a0cc365c02032a0bfe46f457c62.webp?x-oss-process=image/format,png
[format_png 3]: https://img-blog.csdnimg.cn/img_convert/19009ba548306722c6ff9a8aa426d6d9.webp?x-oss-process=image/format,png
[format_png 4]: https://img-blog.csdnimg.cn/img_convert/9306c3c721de64dfb58f8df7932ffaea.webp?x-oss-process=image/format,png
[format_png 5]: https://img-blog.csdnimg.cn/img_convert/c354c9799a1cc90a069c785c7779debc.webp?x-oss-process=image/format,png
[format_png 6]: https://img-blog.csdnimg.cn/img_convert/d9a7c4c4b044937c2b3055464716a9c3.webp?x-oss-process=image/format,png