Swagger入门

新手入门Swagger看了很多博客，竟然没有一个是步骤齐全的或直接能运行的。于是CSDN下载了SSM+Swagger整合的demo，一顿瞎整，终于可以运行了。

不容易，因此分享这篇博客，祝新手朋友们早日脱坑！

注意：如果存在token验证或拦截的请注释掉相应的方法，Swagger才能正常使用。

一、pom.xml导入jar包

<!-- swagger -->
<dependency>
   <groupId>com.mangofactory</groupId>
   <artifactId>swagger-springmvc</artifactId>
   <version>1.0.2</version>
</dependency>
<dependency>
   <groupId>com.mangofactory</groupId>
   <artifactId>swagger-models</artifactId>
   <version>1.0.2</version>
</dependency>
<dependency>
   <groupId>com.wordnik</groupId>
   <artifactId>swagger-annotations</artifactId>
   <version>1.3.11</version>
</dependency>
<!-- swagger-springmvc dependencies -->
<dependency>
   <groupId>com.fasterxml.jackson.core</groupId>
   <artifactId>jackson-core</artifactId>
   <version>2.5.4</version>
</dependency>
<dependency>
   <groupId>com.fasterxml.jackson.core</groupId>
   <artifactId>jackson-annotations</artifactId>
   <version>2.5.4</version>
</dependency>
<dependency>
   <groupId>com.google.guava</groupId>
   <artifactId>guava</artifactId>
   <version>15.0</version>
</dependency>
<dependency>
   <groupId>com.fasterxml</groupId>
   <artifactId>classmate</artifactId>
   <version>1.1.0</version>
</dependency>
选择：如遇到jdk1.5不能编译请参考下面，这个只是极少数情况，比如你的项目是拷来的，没有这种问题请忽略。

二、编写Swagger类

package com.shuyu.config;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import com.mangofactory.swagger.configuration.SpringSwaggerConfig;
import com.mangofactory.swagger.models.dto.ApiInfo;
import com.mangofactory.swagger.plugin.EnableSwagger;
import com.mangofactory.swagger.plugin.SwaggerSpringMvcPlugin;

/**
 * @ClassName: SwaggerConfig 
 * @Description: swagger初始化配置文件
 * @author lanhaifeng
 * @date 2018年08月13日 下午14:51:50 
 * @version V1.0
 */
@EnableSwagger
public class SwaggerConfig{
   private SpringSwaggerConfig springSwaggerConfig;

   /**
    * Required to autowire SpringSwaggerConfig
    */
   @Autowired
   public void setSpringSwaggerConfig(SpringSwaggerConfig springSwaggerConfig) {
      this.springSwaggerConfig = springSwaggerConfig;
   }

   /**
    * Every SwaggerSpringMvcPlugin bean is picked up by the swagger-mvc framework -
    * allowing for multiple swagger groups i.e. same code base multiple swagger
    * resource listings.
    */
   @Bean
   public SwaggerSpringMvcPlugin customImplementation() {
      return new SwaggerSpringMvcPlugin(this.springSwaggerConfig).apiInfo(apiInfo());
   }

   private ApiInfo apiInfo() {
      ApiInfo apiInfo = new ApiInfo("Test项目API", "spring-API swagger测试", "My Apps API terms of service",
            "iot_wangshuyu@126.com", "web app", "My Apps API License URL");
      return apiInfo;
   }

}

三、controller类注解。其实只需要关注：@Api和@ApiOperation

package com.shuyu.controller;

import java.util.Enumeration;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import com.shuyu.service.TestService;
import com.wordnik.swagger.annotations.Api;
import com.wordnik.swagger.annotations.ApiOperation;

@Controller
@RequestMapping(value="/test")
@Api(value="test",description="测试接口描述")
public class TestController {

   @Autowired
   private HttpServletRequest request;
   @Autowired
   private TestService service;

   /**
    * @Title: getHeader @Description: TODO @param @return @return String @throws
    */
   @RequestMapping(value="/header")
   @ResponseBody
   @ApiOperation(value="根据header户信息",httpMethod="GET",notes="get user by id") 
   public Map<String, Object> getHeader() {
      Map<String, Object> map=new HashMap<>();
      map.put("header", getHeadersInfo());
      map.put("user-agent", getUserAgent());
      return map;
   }

   @RequestMapping(value="/sql")
   @ResponseBody
   @ApiOperation(value="数据库查询",httpMethod="GET",notes="mysql数据库查询操作") 
   public List<Map<String, String>> getSql(@RequestParam(value="name",required=true)String name) {
      System.out.println(getToken());
      return service.query(name);
   }

   // get user agent
   private String getUserAgent() {
      return request.getHeader("user-agent");
   }

   // get request headers
   private Map<String, String> getHeadersInfo() {
      Map<String, String> map = new HashMap<String, String>();
      Enumeration headerNames = request.getHeaderNames();
      while (headerNames.hasMoreElements()) {
         String key = (String) headerNames.nextElement();
         String value = request.getHeader(key);
         map.put(key, value);
      }
      return map;
   }

   // get request headers
      private String getToken() {
         Enumeration headerNames = request.getHeaderNames();
         while (headerNames.hasMoreElements()) {
            String key = (String) headerNames.nextElement();
            if("token".equals(key)) {
               String value = request.getHeader(key);
               return value;

            }
         }
         return null;
      }
}

四、springmvc.xml配置加入

<!-- 4:扫描web相关的bean -->

<context:component-scan base-package="com.shuyu.controller" />

<!--整合 Swagger -->
<!-- 将 springSwaggerConfig加载到spring容器 -->  
   <bean class="com.mangofactory.swagger.configuration.SpringSwaggerConfig" />  
   <!-- 将自定义的swagger配置类加载到spring容器 -->  
   <bean class="com.shuyu.config.SwaggerConfig" />  
   <!-- 静态资源文件，不会被Spring MVC拦截 -->
   <mvc:resources mapping="/swagger/**" location="/swagger/" />

五、在webapp文件下创建swagger文件夹，下载swagger-ui解压，把里面的dist文件复制到swagger文件下
下载地址https://github.com/swagger-api/swagger-ui
注意下图：index.html中的url="http://localhost:8080/api-docs",如果你在tomcat配置时加入了项目名称请在8080后面加入项目名称

六、汉化成中文，在index.html中引入汉化的两个js文件

<script src="lang/translator.js" type='text/javascript'></script>
<script src="lang/zh-cn.js" type='text/javascript'></script>

七、访问：输入http://localhost:8080/swagger/dist/index.html
注：我的项目在tomcat配置时是没有加项目名的，因此访问路径是http://localhost:8080/swagger/dist/index.html