How to implement the custom function of the Swagger annotation framework in the Java library

Implement the custom function of the Swagger annotation framework in the Java class library Swagger is a popular API documentation tool that helps developers to design, build and test APIs.The Swagger annotation framework provides a simple way to describe the API for Java developers.However, sometimes we may need to customize the function of Swagger to meet specific needs.This article will introduce how to realize the custom function of the Swagger annotation framework in the Java library. 1. Add Swagger dependencies First of all, we need to add Swagger's dependencies to the project's pom.xml file: <dependency> <groupId>io.springfox</groupId> <artifactId>springfox-swagger2</artifactId> <version>2.9.2</version> </dependency> <dependency> <groupId>io.springfox</groupId> <artifactId>springfox-swagger-ui</artifactId> <version>2.9.2</version> </dependency> 2. Create the Swagger configuration class Next, we need to create a Swagger configuration class to configure some parameters of Swagger, such as the description of interface documents, author information, etc.Below is an example of the Swagger configuration class: @Configuration @EnableSwagger2 public class SwaggerConfig { @Bean public Docket api() { return new Docket(DocumentationType.SWAGGER_2) .select() .apis(RequestHandlerSelectors.basePackage("com.example.controller")) .paths(PathSelectors.any()) .build() .apiInfo(apiInfo()); } private ApiInfo apiInfo() { return new ApiInfo( "API document", "This is an example API document", "1.0", "Terms of service", new Contact("John Doe", "www.example.com", "email@example.com"), "License of API", "API license URL", Collections.emptyList()); } } In this configuration class, we use the@ENABLESWAGGER2 annotation to enable Swagger and create a Docket Bean to configure some parameters of Swagger, such as scanning packages, descriptions of interface documents, etc. 3. Custom Swagger Note In order to implement the custom function, we can create our own Swagger annotation, and then use these custom annotations in the interface.Below is a custom Swagger annotation of an example: @Target({ElementType.METHOD, ElementType.TYPE}) @Retention(RetentionPolicy.RUNTIME) @ApiImplicitParams({ @Apiimplicitparam (name = "x-cusom-header", value = "custom head information", required = true, dattype = "string", paramtype = "header") }) public @interface CustomApiParam { } In this example, we created a custom annotation named Customapiparam, and used @APIIMPLITPARAMS annotations to describe the custom parameters in the annotation.Then we can use this custom annotation on the interface method: @API (tags = "User Management") @RestController @RequestMapping("/users") public class UserController { @GetMapping @CustomApiParam public List<User> getUsers() { //... } } In this way, we can realize the custom function and display our custom parameter information in Swagger UI. Summarize This article introduces how to realize the custom function of the Swagger annotation framework in the Java library.By adding Swagger dependencies, and creating Swagger configuration classes and custom Swagger annotations, we can easily implement custom functions and display the required information in the interface document.I hope this article will help you!