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,可通過Web瀏覽器訪問RESTful Web服務。
要在Spring Boot應用程序中啓用Swagger2,需要在構建配置文件中添加以下依賴項。
<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 文件中添加以下依賴項。
compile group: 'io.springfox', name: 'springfox-swagger2', version: '2.7.0'
compile group: 'io.springfox', name: 'springfox-swagger-ui', version: '2.7.0'
現在,在主Spring Boot應用程序中添加[@EnableSwagger2](https://github.com/EnableSwagger2 "@EnableSwagger2")
註釋。 [@EnableSwagger2](https://github.com/EnableSwagger2 "@EnableSwagger2")
註釋用於爲Spring Boot應用程序啓用Swagger2。
主Spring Boot應用程序的代碼如下所示 -
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,創建Docket Bean以爲Spring Boot應用程序配置Swagger2。需要定義一個基礎包來爲Swagger2配置REST API。
@Bean
public Docket productApi() {
return new Docket(DocumentationType.SWAGGER_2).select()
.apis(RequestHandlerSelectors.basePackage("com.yiibai.swaggerdemo")).build();
}
現在,在主Spring Boot應用程序類文件中添加這個bean,主Spring Boot應用程序類看起來如下所示 -
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();
}
}
現在,在構建配置文件中添加以下Spring Boot Starter Web依賴項以編寫REST端點,如下所示 -
Maven用戶可以在pom.xml 文件中添加以下依賴項 -
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
Gradle用戶可以在build.gradle 文件中添加以下依賴項 -
compile('org.springframework.boot:spring-boot-starter-web')
現在,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如下 -
Maven構建文件 - pom.xml 代碼如下:
<?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'
}
可以創建可執行的JAR文件,並使用以下Maven或Gradle命令運行Spring Boot應用程序。
對於Maven,可以使用以下命令 -
mvn clean install
在「BUILD SUCCESS」之後,可以在target
目錄下找到JAR文件。
對於Gradle,可以使用此命令 -
gradle clean build
在「BUILD SUCCESSFUL」之後,可以在build/libs
目錄下找到JAR文件。
現在,使用命令運行JAR文件 -
java –jar <JARFILE>
現在,應用程序將在Tomcat端口8080
上啓動。
現在,在Web瀏覽器URL => http://localhost:8080/swagger-ui.html , 並查看Swagger API功能,結果如下所示: