The skills and precautions of the Swagger annotation framework in the Java class library

Skills and precautions for the use of Swagger's Swagger Note Framework in the Java Class Library Introduction: Swagger is a tool for building, documentation and using the RESTFUL Web service.It can show the functions and parameters of the API by automatically generating API documents and providing an interactive UI interface.The use of the Swagger annotation framework in the Java library can make developers more conveniently create and manage API documents to improve development efficiency and code readability.This article will introduce some skills and precautions when using the Swagger annotation framework. 1. Add Swagger dependencies: To use the Swagger annotation framework in the Java library, we first need to add Swagger dependencies to the project construction file.For example, in the Maven project, the following dependencies can be added to the POM.XML file: <dependency> <groupId>io.springfox</groupId> <artifactId>springfox-swagger-ui</artifactId> <version>2.9.2</version> </dependency> <dependency> <groupId>io.springfox</groupId> <artifactId>springfox-swagger2</artifactId> <version>2.9.2</version> </dependency> 2. Create the Swagger configuration class: Create a Swagger configuration class to configure and enable the Swagger annotation framework.In this class, we need to use@ENABLESWAGGER2 annotations to enable Swagger and define some basic information, such as the title and description of API.The following is a swagger configuration class: @Configuration @EnableSwagger2 public class SwaggerConfig { @Bean public Docket api() { return new Docket(DocumentationType.SWAGGER_2) .select() .apis(RequestHandlerSelectors.basePackage("com.example.api")) .build() .apiInfo(apiInfo()); } private ApiInfo apiInfo() { return new ApiInfoBuilder() .title ("API document")) .descripting ("This is an example of the API document")) .version("1.0.0") .build(); } } In the above example, we use the Basepackage method to specify the scanning bag path, and use the Apiinfo method to define the title, description and version information of the API. 3. Use Swagger Note in the controller class: In the controller class that needs to generate API documents, we can use various Swagger annotations to describe the functions, parameters, and return values of the API.Here are some commonly used Swagger annotations: -@Aapi: It is used to describe the information of the entire controller class, such as the controller name, description, etc. -@Apioperation: The functions and descriptions of the single interface are described. -@APIPARAM: The name, description and type for describing the interface parameters. -@Apimodel: For information for describing the data model, as the field of the physical class, description, etc. The following is an example controller class that demonstrates how to use the Swagger annotation: @RestController @API (tags = "User Management API")) @RequestMapping("/users") public class UserController { @APIPERATION ("Get user list") @GetMapping("/") public List<User> getUsers() { // Return to the user list } @APIPERATION ("Create User") @PostMapping("/") Public User Createuser (@APIPARAM ("User Information") @requestbody User User) { // Create a new user } @APIPERATION ("Update User") @PutMapping("/{id}") Present Updateuser(@apipaluem(Value = "VERIEMèوID", example = "1") @Apiparam ("User Information") @requestbody User User) { // Update user information } @APIPERATION ("Delete user") @DeleteMapping("/{id}") public void deleteUser(@ApiParam(value = "用户ID", example = "1") @PathVariable long id) { // delete users } } In the above example, we use the @API annotation to describe the information of the entire controller class, use the @APIPERATION annotation to describe the functions and descriptions of each interface, and use the @APIPARAM annotation to describe the name and type of the interface parameter. 4. Start the application and access Swagger UI: After completing the above steps, you can start the application and access the Swagger UI interface to view and test the generated API document.The Swagger UI interface is accessed under the "http: // localhost: 8080/swagger-ui.html" path. Precautions: -In the use of Swagger annotations, ensure that the position and usage of the annotation must be correct.Incorrect annotations may lead to incomplete or inaccurate API documents. -S when using @RequestParam annotations, make sure the parameter name, parameter description and parameter type consistency. -In the use of @apimodel annotations, ensure that the fields and descriptions of the physical class are correct, and the business scenario is named. -Accapons according to actual needs, you can use other Swagger annotations to further expand and optimize the display and test functions of API documents. Summarize: The use of the Swagger annotation framework in the Java class library can easily generate and manage API documents to improve development efficiency and code readability.By using the Swagger annotation, we can clearly describe the functions and parameters of the API to provide more intuitive and reliable document information to other developers.However, pay attention to the correct use and configuration annotation when using the Swagger annotation to ensure that the generated API documents are accurate and complete.