Swagger是一個規範和完整的框架，用於生成、描述、呼叫和視覺化 RESTful 風格的 Web 服務。總體目標是使客戶端和檔案系統作為伺服器以同樣的速度來更新。檔案的方法，引數和模型緊密整合到伺服器端的程式碼，允許API來始終保持同步。

1.引入swagger2的maven依賴包

		<dependency>
		    <groupId>io.springfox</groupId>
		    <artifactId>springfox-swagger2</artifactId>
		    <version>2.4.0</version>
		 </dependency>
        <dependency>
		    <groupId>io.springfox</groupId>
		    <artifactId>springfox-swagger-ui</artifactId>
		    <version>2.4.0</version>
		</dependency>
		<dependency>
	        <groupId>com.google.guava</groupId>
	        <artifactId>guava</artifactId>
	        <version>15.0</version>
	    </dependency>
 

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

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 api() { 
        return new Docket(DocumentationType.SWAGGER_2)  
          .select()                                  
          .apis(RequestHandlerSelectors.any())              
          .paths(PathSelectors.any())                          
          .build();                                           
    }
    
}