Spring Boot啓用Swagger2

Swagger2是一個開源項目，用於爲RESTful Web服務生成REST API文檔。它提供了一個用戶界面，可經過Web瀏覽器訪問RESTful Web服務。html

要在Spring Boot應用程序中啓用Swagger2，須要在構建配置文件中添加如下依賴項。java

<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>

對於Gradle用戶，請在build.gradle 文件中添加如下依賴項。linux

compile group: 'io.springfox', name: 'springfox-swagger2', version: '2.7.0'
compile group: 'io.springfox', name: 'springfox-swagger-ui', version: '2.7.0'

如今，在主Spring Boot應用程序中添加@EnableSwagger2註釋。 @EnableSwagger2註釋用於爲Spring Boot應用程序啓用Swagger2。git

主Spring Boot應用程序的代碼以下所示 -github

package com.yiibai.swaggerdemo; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import springfox.documentation.swagger2.annotations.EnableSwagger2; @SpringBootApplication @EnableSwagger2 public class SwaggerDemoApplication { public static void main(String[] args) { SpringApplication.run(SwaggerDemoApplication.class, args); } }

接下來，建立Docket Bean覺得Spring Boot應用程序配置Swagger2。須要定義一個基礎包來爲Swagger2配置REST API。web

@Bean public Docket productApi() { return new Docket(DocumentationType.SWAGGER_2).select() .apis(RequestHandlerSelectors.basePackage("com.yiibai.swaggerdemo")).build(); }

如今，在主Spring Boot應用程序類文件中添加這個bean，主Spring Boot應用程序類看起來以下所示 -spring

package com.yiibai.swaggerdemo; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.context.annotation.Bean; import springfox.documentation.builders.RequestHandlerSelectors; import springfox.documentation.spi.DocumentationType; import springfox.documentation.spring.web.plugins.Docket; import springfox.documentation.swagger2.annotations.EnableSwagger2; @SpringBootApplication @EnableSwagger2 public class SwaggerDemoApplication { public static void main(String[] args) { SpringApplication.run(SwaggerDemoApplication.class, args); } @Bean public Docket productApi() { return new Docket(DocumentationType.SWAGGER_2).select() .apis(RequestHandlerSelectors.basePackage("com.yiibai.swaggerdemo")).build(); } }

如今，在構建配置文件中添加如下Spring Boot Starter Web依賴項以編寫REST端點，以下所示 -shell

Maven用戶能夠在pom.xml 文件中添加如下依賴項 -apache

<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency>

Gradle用戶能夠在build.gradle 文件中添加如下依賴項 -api

compile('org.springframework.boot:spring-boot-starter-web')

如今，這裏顯示了在Rest Controller文件中構建兩個簡單的RESTful Web服務GET和POST的代碼 -

package com.yiibai.swaggerdemo; import java.util.ArrayList; import java.util.List; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RestController; @RestController public class SwaggerAPIController { @RequestMapping(value = "/products", method = RequestMethod.GET) public List<String> getProducts() { List<String> productsList = new ArrayList<>(); productsList.add("Honey"); productsList.add("Almond"); return productsList; } @RequestMapping(value = "/products", method = RequestMethod.POST) public String createProduct() { return "Product is saved successfully"; } }

完整的構建配置文件以下 -

Maven構建文件 - pom.xml 代碼以下:

<?xml version = "1.0" encoding = "UTF-8"?> <project xmlns = "http://maven.apache.org/POM/4.0.0" xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation = "http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.yiibai</groupId> <artifactId>swagger-demo</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>swagger-demo</name> <description>Demo project for Spring Boot</description> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.9.RELEASE</version> <relativePath /> <!-- lookup parent from repository --> </parent> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <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> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>

Gradle構建文件 - build.gradle -

buildscript {
   ext {
      springBootVersion = '1.5.9.RELEASE'
   }
   repositories {
      mavenCentral()
   }
   dependencies {
      classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
   }
}
apply plugin: 'java'
apply plugin: 'eclipse'
apply plugin: 'org.springframework.boot'

group = 'com.yiibai'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = 1.8

repositories {
   mavenCentral()
} dependencies {
   compile('org.springframework.boot:spring-boot-starter-web')
   testCompile('org.springframework.boot:spring-boot-starter-test')
   compile group: 'io.springfox', name: 'springfox-swagger2', version: '2.7.0'
   compile group: 'io.springfox', name: 'springfox-swagger-ui', version: '2.7.0'
}

能夠建立可執行的JAR文件，並使用如下Maven或Gradle命令運行Spring Boot應用程序。

對於Maven，能夠使用如下命令 -

mvn clean install

在「BUILD SUCCESS」以後，能夠在target目錄下找到JAR文件。

對於Gradle，能夠使用此命令 -

gradle clean build

在「BUILD SUCCESSFUL」以後，能夠在build/libs目錄下找到JAR文件。

如今，使用命令運行JAR文件 -

java –jar <JARFILE>

如今，應用程序將在Tomcat端口8080上啓動。

如今，在Web瀏覽器URL => http://localhost:8080/swagger-ui.html , 並查看Swagger API功能，結果以下所示：