The technical principles and implementation of the Swagger UI framework in the dialysis Java library
Title: The technical principles and implementation of the Swagger UI framework in the Java class library
Abstract: Swagger is a powerful and commonly used open source API documentation tool that can help developers easily generate and maintain API documents.Swagger UI is a sub -project of Swagger. It provides an interactive interface that can intuitively view and test the API.This article will introduce the technical principles and implementation methods of the Swagger UI framework, and provide Java code examples to demonstrate how to integrate the Swagger UI to the Java library.
1. Swagger profile
Swagger is a Restful API document automatic generating tool that can extract API information from code annotations and automatically generate API documents based on this information.Swagger provides a specification describing the API in JSON or YAML format. Developers can use this specification to define all aspects of API, including request methods, paths, parameters, responses, etc.
2. Principle of Swagger UI framework
Swagger UI is an interactive API document interface implemented using HTML, CSS and JavaScript.It dynamically obtains API specifications through interaction with Swagger Server and shows API documents on the webpage.Swagger UI uses the information in the API specification to generate the corresponding HTML and JavaScript code to display the details of the API, including the request method, path, parameter, and response.
3. Implementation method
Below is an example of how to integrate Swagger UI to the Java class library.
First, we need to add Swagger -related dependencies to the pom.xml file:
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger2</artifactId>
<version>3.x.x</version>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger-ui</artifactId>
<version>3.x.x</version>
</dependency>
Then, use the Swagger's annotation in the Java class to describe the API:
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
@RestController
@RequestMapping("/api")
@API (tags = "Example API")
public class ExampleController {
@GetMapping("/hello")
@APIPERATION ("Example API Interface")
public String hello() {
return "Hello Swagger!";
}
}
Next, configure the related configuration class of SWAGGER:
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;
@Configuration
@EnableSwagger2
public class SwaggerConfig {
@Bean
public Docket apiDocket() {
return new Docket(DocumentationType.SWAGGER_2)
.select()
.apis(RequestHandlerSelectors.basePackage("com.example.api"))
.paths(PathSelectors.any())
.build()
.apiInfo(new ApiInfoBuilder()
.title ("Example API Document")
.descripting ("This is an example API document")
.version("1.0.0")
.build());
}
}
Finally, add Swagger related configuration to the application start class:
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import springfox.documentation.swagger2.annotations.EnableSwagger2;
@SpringBootApplication
@EnableSwagger2
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
After completing the above steps, start the application and visit http:// localhost: 8080/swagger-ui.html to see the generated Swagger UI interface in the browser.On this interface, you can find detailed information describing the API and even test the API.
Summary: This article introduces the technical principles of the Swagger UI framework and the implementation of the Java class library.Using Swagger UI can easily generate and maintain API documents, providing an interactive interface to display the details of the API.By using Swagger annotations and related configurations, we can easily integrate Swagger UI to Java libraries and easily use and maintain API documents.
