SpringBoot2.0系列教程（六）Springboot框架添加Swagger2来在线自动生成接口的文档+测试功能

Hello大家好，本章我们添加Swagger2来在线自动生成接口的文档+测试功能。有问题可以联系我mr_beany@163.com。另求各路大神指点，感谢

一：什么是Swagger

Swagger是一款通过我们添加的注解来对方法进行说明，来自动生成项目的在线api接口文档的web服务。

二：添加Swagger2依赖

<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>

然后鼠标右键选择Maven→Reimport进行依赖下载

三：创建Swagger2配置文件

在文件夹configurer中创建SwaggerConfigurer

package com.example.demo.core.configurer;

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.service.ApiInfo;
import springfox.documentation.service.Contact;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

/**
 * @author 张瑶
 * @Description:Swagger2 配置文件
 * @time 2018/4/20 22:42
 */
@Configuration
@EnableSwagger2
public class SwaggerConfigurer {

    @Bean
    public Docket createRestApi() {
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())
                .select()
                .apis(RequestHandlerSelectors.basePackage("com.example.demo.controller"))
                .paths(PathSelectors.any())
                .build();
    }

    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title("mySpringBoot 使用Swagger2构建RESTful APIs")
                .description("更多Spring Boot相关文章请关注：https://juejin.im/user/59e7fb9451882578e1406a51/posts")
                .termsOfServiceUrl("https://juejin.im/user/59e7fb9451882578e1406a51/posts")
                .contact(new Contact("Mr_初晨", "https://gitee.com/beany/mySpringBoot", null))
                .version("1.0")
                .build();
    }
}

四：修改Controller，添加API注解

package com.example.demo.controller;

@RestController
@RequestMapping("userInfo")
@Api(tags = {"用户操作接口"}, description = "userInfoControler")
public class UserInfoController {

    @Resource
    private UserInfoService userInfoService;

    @PostMapping("/hello")
    public String hello() {
        return "hello SpringBoot";
    }

    @ApiOperation(value = "查询用户", notes = "根据用户ID查询用户")
    @ApiImplicitParams({
            @ApiImplicitParam(name = "id", value = "用户ID", required = true,
                    dataType = "Integer", paramType = "query")
    })
    @PostMapping("/selectById")
    public RetResult<UserInfo> selectById(@RequestParam Integer id) {
        UserInfo userInfo = userInfoService.selectById(id);
        return RetResponse.makeOKRsp(userInfo);
    }

    @PostMapping("/testException")
    public RetResult<UserInfo> testException(Integer id) {
        List a = null;
        a.size();
        UserInfo userInfo = userInfoService.selectById(id);
        return RetResponse.makeOKRsp(userInfo);
    }


}

注意参数前需加上@RequestParam

以上注解大家可以查看参考swagger官方注解文档进行自定义添加

五：接口测试

浏览器输入localhost:8080/swagger-ui.html我们可以看到。。哎呀我曹，页面呢？？

六：解决问题

继承WebMvcConfigurationSupport之后，静态文件映射会出现问题，需要重新指定静态资源

在WebConfigurer 中添加如下代码

@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
    registry.addResourceHandler("swagger-ui.html")
            .addResourceLocations("classpath:/META-INF/resources/");
    registry.addResourceHandler("/webjars/**")
            .addResourceLocations("classpath:/META-INF/resources/webjars/");
    registry.addResourceHandler("/favicon.ico")
            .addResourceLocations("classpath:/META-INF/resources/favicon.ico");
    super.addResourceHandlers(registry);
}

七：接口测试

浏览器输入localhost:8080/swagger-ui.html我们可以看到如下页面

打开POST /userInfo/selectById

请求结果

八：英语看着不爽，怎么办？

根据swagger官方使用手册找到关于本地化和翻译的说明：

九：添加翻译文件

在resourece目录下创建\META-INF\resourece目录，创建swagger-ui.html

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>Swagger UI</title>
    <link rel="icon" type="image/png" href="webjars/springfox-swagger-ui/images/favicon-32x32.png" sizes="32x32"/>
    <link rel="icon" type="image/png" href="webjars/springfox-swagger-ui/images/favicon-16x16.png" sizes="16x16"/>
    <link href='webjars/springfox-swagger-ui/css/typography.css' media='screen' rel='stylesheet' type='text/css'/>
    <link href='webjars/springfox-swagger-ui/css/reset.css' media='screen' rel='stylesheet' type='text/css'/>
    <link href='webjars/springfox-swagger-ui/css/screen.css' media='screen' rel='stylesheet' type='text/css'/>
    <link href='webjars/springfox-swagger-ui/css/reset.css' media='print' rel='stylesheet' type='text/css'/>
    <link href='webjars/springfox-swagger-ui/css/print.css' media='print' rel='stylesheet' type='text/css'/>
    <script src='webjars/springfox-swagger-ui/lib/jquery-1.8.0.min.js' type='text/javascript'></script>
    <script src='webjars/springfox-swagger-ui/lib/jquery.slideto.min.js' type='text/javascript'></script>
    <script src='webjars/springfox-swagger-ui/lib/jquery.wiggle.min.js' type='text/javascript'></script>
    <script src='webjars/springfox-swagger-ui/lib/jquery.ba-bbq.min.js' type='text/javascript'></script>
    <script src='webjars/springfox-swagger-ui/lib/handlebars-2.0.0.js' type='text/javascript'></script>
    <script src='webjars/springfox-swagger-ui/lib/underscore-min.js' type='text/javascript'></script>
    <script src='webjars/springfox-swagger-ui/lib/backbone-min.js' type='text/javascript'></script>
    <script src='webjars/springfox-swagger-ui/swagger-ui.min.js' type='text/javascript'></script>
    <script src='webjars/springfox-swagger-ui/lib/highlight.7.3.pack.js' type='text/javascript'></script>
    <script src='webjars/springfox-swagger-ui/lib/jsoneditor.min.js' type='text/javascript'></script>
    <script src='webjars/springfox-swagger-ui/lib/marked.js' type='text/javascript'></script>
    <script src='webjars/springfox-swagger-ui/lib/swagger-oauth.js' type='text/javascript'></script>

    <script src='webjars/springfox-swagger-ui/springfox.js' type='text/javascript'></script>
    <!--国际化操作：选择中文版 -->
    <script src='webjars/springfox-swagger-ui/lang/translator.js' type='text/javascript'></script>
    <script src='webjars/springfox-swagger-ui/lang/zh-cn.js' type='text/javascript'></script>
</head>

<body class="swagger-section">
<div id='header'>
    <div class="swagger-ui-wrap">
        <a id="logo" href="http://swagger.io">swagger</a>

        <form id='api_selector'>
            <div class='input'>
                <select id="select_baseUrl" name="select_baseUrl"/>
            </div>
            <div class='input'><input placeholder="http://example.com/api" id="input_baseUrl" name="baseUrl" type="text"/>
            </div>
            <div class='input'><input placeholder="api_key" id="input_apiKey" name="apiKey" type="text"/></div>
            <div class='input'><a id="explore" href="#" data-sw-translate>Explore</a></div>
        </form>
    </div>
</div>

<div id="message-bar" class="swagger-ui-wrap" data-sw-translate>&nbsp;</div>
<div id="swagger-ui-container" class="swagger-ui-wrap"></div>
</body>
</html>