SpringBoot集成Swagger2与Swagger3的区别_swagger2 swagger3

前言

Swagger 是一个规范和完整的框架，用于生成、描述、调用和可视化 RESTful 风格的 Web 服务。 总体目标是使客户端和文件系统作为服务器以同样的速度来更新。文件的方法、参数和模型紧密集成到服务器端的代码，允许 API 来始终保持同步。Swagger 让部署管理和使用功能强大的 API 从未如此简单。

一、pom文件中引入Swagger依赖

Swagger2

<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>
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Swagger3

<dependency>
  <groupId>io.springfox</groupId>
  <artifactId>springfox-boot-starter</artifactId>
  <version>3.0.0</version>
</dependency>
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二、Swagger配置

Swagger2

@Configuration
@EnableSwagger2
public class SwaggerConfig {

    @Bean
    public Docket api() {
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())
                .select()
                // 自行修改为自己的包路径
                .apis(RequestHandlerSelectors.basePackage("com.tsing"))
                .paths(PathSelectors.any())
                .build();
    }

    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title("swagger-api文档")
                .description("swagger接入教程")
                .version("1.0")
                .contact(new Contact("TheTsing", "https://blog.csdn.net/qq_42375133?type=blog", "thetsing@foxmail.com"))
                .build();
    }

}
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Swagger3

@Configuration
public class SwaggerConfig {

    @Bean
    public Docket createRestApi() {
        return new Docket(DocumentationType.OAS_30)
                .apiInfo(apiInfo())
                .select()
                .apis(RequestHandlerSelectors.basePackage("com.tsing"))
                .paths(PathSelectors.any())
                .build()
    }

    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title("Api Documentation")
                .contact(new Contact("TheTsing", "http://www.baidu.com", "thetsing@foxmail.com"))
                .version("1.0")
                .build();
    }

}
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三、若配置有拦截器，应对Swagger做如下配置

Swagger2

@Configuration
public class WebMvcConfig implements WebMvcConfigurer {

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        // 配置swagger拦截器
        registry.addInterceptor(new MyInterceptor())// 这里加入自己写的拦截器
                .addPathPatterns("/**").
                excludePathPatterns("/swagger-resources/**", "/webjars/**", "/swagger-ui.html/**", "/v2/**");
    }

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        // 配置swagger静态资源映射
        registry.addResourceHandler("swagger-ui.html")
                .addResourceLocations("classpath:/META-INF/resources/");
        registry.addResourceHandler("/webjars/**")
                .addResourceLocations("classpath:/META-INF/resources/webjars/");
    }

    @Override
    public void addCorsMappings(CorsRegistry registry) {
        // 跨域支持
        registry.addMapping("/**").allowedOriginPatterns("*").allowedMethods("*").allowCredentials(true);
    }

}
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Swagger3

@Configuration
public class WebMvcConfig implements WebMvcConfigurer {

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        // 配置swagger拦截器
        registry.addInterceptor(new MyInterceptor())
                .addPathPatterns("/**").
                excludePathPatterns("/swagger-resources/**", "/webjars/**", "/swagger-ui/**", "/v3/**");
    }

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        // 配置swagger静态资源映射
        registry.addResourceHandler("/swagger-ui/**")
                .addResourceLocations("classpath:/META-INF/resources/webjars/springfox-swagger-ui/");
        registry.addResourceHandler("/webjars/**")
                .addResourceLocations("classpath:/META-INF/resources/webjars/");
    }

    @Override
    public void addCorsMappings(CorsRegistry registry) {
        // 跨域支持
        registry.addMapping("/**").allowedOriginPatterns("*").allowedMethods("*").allowCredentials(true);
    }

}
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四、若项目中还有Token验证，则对应Swagger配置文件做如下修改

Swagger2

@Configuration
@EnableSwagger2
public class SwaggerConfig {

    @Bean
    public Docket api() {
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())
                .select()
                // 自行修改为自己的包路径
                .apis(RequestHandlerSelectors.basePackage("com.tsing"))
                .paths(PathSelectors.any())
                .build()
                .securitySchemes(securitySchemes())
                .securityContexts(securityContexts());
    }

    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title("swagger-api文档")
                .description("swagger接入教程")
                .version("1.0")
                .contact(new Contact("TheTsing", "https://blog.csdn.net/qq_42375133?type=blog", "thetsing@foxmail.com"))
                .build();
    }

    private List<ApiKey> securitySchemes() {
        List<ApiKey> apiKeyList = new ArrayList();
        apiKeyList.add(new ApiKey("token", "token", "header"));
        return apiKeyList;
    }

    private List<SecurityContext> securityContexts() {
        List<SecurityContext> securityContexts = new ArrayList<>();
        securityContexts.add(SecurityContext.builder()
                .securityReferences(defaultAuth())
                .forPaths(PathSelectors.any())
                .build());
        return securityContexts;
    }

    List<SecurityReference> defaultAuth() {
        AuthorizationScope authorizationScope = new AuthorizationScope("global", "accessEverything");
        AuthorizationScope[] authorizationScopes = new AuthorizationScope[1];
        authorizationScopes[0] = authorizationScope;
        List<SecurityReference> securityReferences = new ArrayList<>();
        securityReferences.add(new SecurityReference("token", authorizationScopes));
        return securityReferences;
    }

}
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Swagger3

@Configuration
public class SwaggerConfig {

    @Bean
    public Docket createRestApi() {
        return new Docket(DocumentationType.OAS_30)
                .apiInfo(apiInfo())
                .select()
                .apis(RequestHandlerSelectors.basePackage("com.tsing"))
                .paths(PathSelectors.any())
                .build()
                .protocols(newHashSet("https", "http"))
                .securitySchemes(securitySchemes())
                .securityContexts(securityContexts());
    }

    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title("Api Documentation")
                .contact(new Contact("TheTsing", "http://www.baidu.com", "thetsing@foxmail.com"))
                .version("1.0")
                .build();
    }

    /**
     * 设置授权信息
     */
    private List<SecurityScheme> securitySchemes() {
        ApiKey apiKey = new ApiKey("token", "token", In.HEADER.toValue());
        return Collections.singletonList(apiKey);
    }

    /**
     * 授权信息全局应用
     */
    private List<SecurityContext> securityContexts() {
        return Collections.singletonList(
                SecurityContext.builder()
                        .securityReferences(Collections.singletonList(new SecurityReference("token", new AuthorizationScope[]{new AuthorizationScope("global", "accessEverything")})))
                        .build()
        );
    }

    @SafeVarargs
    private final <T> Set<T> newHashSet(T... ts) {
        if (ts.length > 0) {
            return new LinkedHashSet<>(Arrays.asList(ts));
        }
        return null;
    }

}
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五、访问路径

Swagger2和Swagger3的访问路径也有所不同

Swagger2：http://localhost:port/swagger-ui.html
Swagger3：http://localhost:port/swagger-ui/index.html

总结

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