Spring MVC中使用 Swagger2 构建Restful API

1.maven依赖

<!-- 构建Restful API -->
<dependency>
    <groupId>io.springfox</groupId>
    <artifactId>springfox-swagger2</artifactId>
    <version>2.6.0</version>
</dependency>
<dependency>
    <groupId>io.springfox</groupId>
    <artifactId>springfox-swagger-ui</artifactId>
    <version>2.6.0</version>
</dependency>

2.Swagger配置文件

package com.custom.web.swagger;

import com.google.common.base.Predicate;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.service.ApiKey;
import springfox.documentation.service.AuthorizationScope;
import springfox.documentation.service.SecurityReference;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spi.service.contexts.SecurityContext;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

import java.util.List;

import static com.google.common.base.Predicates.or;
import static com.google.common.collect.Lists.newArrayList;
import static springfox.documentation.builders.PathSelectors.regex;

@Configuration    // 配置注解，自动在本类上下文加载一些环境变量信息
@EnableSwagger2   // 使swagger2生效
@EnableWebMvc
@ComponentScan(basePackages = {"com.custom.web"})  //需要扫描的包路径
public class SwaggerConfig extends WebMvcConfigurationSupport {

    @Bean
    public Docket swaggerSpringMvcPlugin() {
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())
                .groupName("business-api")
                .select()   // 选择那些路径和api会生成document
.apis(RequestHandlerSelectors.basePackage("com.custom.web"))
                .paths(paths())
                //.apis(RequestHandlerSelectors.any())  // 对所有api进行监控
                //.paths(PathSelectors.any())   // 对所有路径进行监控
.build()
                .securitySchemes(securitySchemes())
                .securityContexts(securityContexts());
    }

    private Predicate<String> paths() {
        return or(regex("/person.*"));
    }

    private List<ApiKey> securitySchemes() {
        return newArrayList(
                new ApiKey("clientId", "客户端ID", "header"),
                new ApiKey("clientSecret", "客户端秘钥", "header"),
                new ApiKey("accessToken", "客户端访问标识", "header"));
    }

    private List<SecurityContext> securityContexts() {
        return newArrayList(
                SecurityContext.builder()
                        .securityReferences(defaultAuth())
                        .forPaths(PathSelectors.regex("/*.*"))
                        .build()
        );
    }

    List<SecurityReference> defaultAuth() {
        AuthorizationScope authorizationScope = new AuthorizationScope("global", "accessEverything");
        AuthorizationScope[] authorizationScopes = new AuthorizationScope[1];
        authorizationScopes[0] = authorizationScope;
        return newArrayList(
                new SecurityReference("clientId", authorizationScopes),
                new SecurityReference("clientSecret", authorizationScopes),
                new SecurityReference("accessToken", authorizationScopes));
    }

    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title("Spring 中使用Swagger2构建RESTful API")
                .termsOfServiceUrl("http://blog.csdn.net/yangshijin1988")
                .description("此API提供接口调用")
                .license("License Version 2.0")
                .licenseUrl("http://blog.csdn.net/yangshijin1988")
                .version("2.0").build();
    }
}

3.Controller中使用注解添加API文档

package com.custom.web.index.controller;

importcom.custom.web.index.entity.Person;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.springframework.http.MediaType;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

/**
 * Created by Administrator on 2017/4/8.
 */
@Controller
@RequestMapping("/person")
@Api(tags="个人业务")
public class PersonController {

    @RequestMapping(value="/getPerson",method= RequestMethod.GET)
    @ApiOperation(httpMethod = "GET", value = "个人信息", produces = MediaType.APPLICATION_JSON_VALUE)
    public @ResponseBody Person getPersons() {
        Person person = new Person();
        person.setFirstName("fname");
        person.setLastName("lname");
        person.setAge(37);
        person.setDeptName("dept");
        return person;
    }
}

4.web.xml配置说明

<servlet>
    <servlet-name>dispatcher</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath*:/spring-mvc.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>dispatcher</servlet-name>
    <url-pattern>*.do</url-pattern>
</servlet-mapping>

<servlet-mapping>
    <servlet-name>dispatcher</servlet-name>
    <url-pattern>/v2/api-docs</url-pattern>
</servlet-mapping>

说明：Springmvc前端控制器扫描路径增加“/v2/api-docs”，用于扫描Swagger的 /v2/api-docs，否则 /v2/api-docs无法生效。

 

5.spring-mvc.xml 增加自动扫描Swagger

<!-- 使用 Swagger Restful API文档时，添加此注解 -->
<mvc:default-servlet-handler />
<mvc:annotation-driven/>

或者
<mvc:resources location="classpath:/META-INF/resources/" mapping="swagger-ui.html"/>
<mvc:resources location="classpath:/META-INF/resources/webjars/" mapping="/webjars/**"/>

 

6.效果展示

Restful API 访问路径:  

http://IP:port/{context-path}/swagger-ui.html  

 

 

 

7、使用Swagger UI模板

可在Swagger官网下载。地址：https://github.com/swagger-api/swagger-ui。

下载完成后将swagger-ui下的dist目录下的模板放入项目中，如在项目web-app下新建swagger放swagger-ui模板。

在spring-mvc中配置swagger文件夹自动过滤。

<mvc:resources mapping="/swagger/**" location="/swagger/" cache-period="31556926" />

将index.html或swagger-ui.html文件js中的url换成url ="/v2/api-docs?group=business-api";