SpringBootの使用Swagger2

1. 在pom.xml中加入Swagger2的依赖

 <!--加入Swagger2的依赖-->
 <dependency>
     <groupId>io.springfox</groupId>
     <artifactId>springfox-swagger2</artifactId>
     <version>2.2.2</version>
 </dependency>
 <dependency>
     <groupId>io.springfox</groupId>
     <artifactId>springfox-swagger-ui</artifactId>
     <version>2.2.2</version>
  </dependency>                    

2. 在Application.java同级创建Swagger2的配置类Swagger2

 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.spi.DocumentationType;
 import springfox.documentation.spring.web.plugins.Docket;
 import springfox.documentation.swagger2.annotations.EnableSwagger2;
 
 
 @Configuration //让Spring来加载该类配置
 @EnableSwagger2 //启用Swagger2
 public class Swagger2 {
 
     @Bean
     public Docket createRestApi() {
         return new Docket(DocumentationType.SWAGGER_2)
                 .apiInfo(apiInfo())//用来创建该Api的基本信息（这些基本信息会展现在文档页面中）
                 .select()
                 //用来控制哪些接口暴露给Swagger来展现，
                 //本例采用指定扫描的包路径来定义，Swagger会扫描该包下所有Controller定义的API，并产生文档内容
                 //（除了被@ApiIgnore指定的请求）
                 .apis(RequestHandlerSelectors.basePackage("com.example.demo1.web"))
                 .paths(PathSelectors.any())
                 .build();
     }
 
     private ApiInfo apiInfo() {
         return new ApiInfoBuilder()
                 .title("Spring Boot中使用Swagger2构建RESTful APIs")
                 .description("更多Spring Boot相关文章请关注：https://www.cnblogs.com/yangjiming/category/1240129.html")
                 .termsOfServiceUrl("http://www.cnblogs.com/yangjiming/")
                 .contact("Mr.yang")
                 .version("1.0")
                 .build();
     }
 }

3.  在代码中添加文档内容，通过@ApiOperation注解来给API增加说明、通过@ApiImplicitParams、@ApiImplicitParam注解来给参数增加说明。

import com.example.demo1.domain.User;
import io.swagger.annotations.ApiImplicitParam;
import io.swagger.annotations.ApiImplicitParams;
import io.swagger.annotations.ApiOperation;
import org.springframework.web.bind.annotation.*;

import java.util.*;

@RestController
 @RequestMapping(value="/users")     // 通过这里配置使下面的映射都在/users下
 public class UserController {
 
     static Map<Long, User> users = Collections.synchronizedMap(new HashMap<Long, User>());
 
     @ApiOperation(value="获取用户列表", notes="")
     @RequestMapping(value={""}, method=RequestMethod.GET)
     public List<User> getUserList() {
         List<User> r = new ArrayList<User>(users.values());
         return r;
     }
 
     @ApiOperation(value="创建用户", notes="根据User对象创建用户")
     @ApiImplicitParam(name = "user", value = "用户详细实体user", required = true, dataType = "User")
     @RequestMapping(value="", method=RequestMethod.POST)
     public String postUser(@RequestBody User user) {
         users.put(user.getId(), user);
         return "success";
     }
 
     @ApiOperation(value="获取用户详细信息", notes="根据url的id来获取用户详细信息")
     @ApiImplicitParam(name = "id", value = "用户ID", required = true, dataType = "Long", paramType="path")
     @RequestMapping(value="/{id}", method=RequestMethod.GET)
     public User getUser(@PathVariable Long id) {
         return users.get(id);
     }
 
     @ApiOperation(value="更新用户详细信息", notes="根据url的id来指定更新对象，并根据传过来的user信息来更新用户详细信息")
     @ApiImplicitParams({
             @ApiImplicitParam(name = "id", value = "用户ID", required = true, dataType = "Long", paramType="path"),
             @ApiImplicitParam(name = "user", value = "用户详细实体user", required = true, dataType = "User")
     })
     @RequestMapping(value="/{id}", method=RequestMethod.PUT)
     public String putUser(@PathVariable Long id, @RequestBody User user) {
         User u = users.get(id);
         u.setName(user.getName());
         u.setAge(user.getAge());
         users.put(id, u);
         return "success";
     }
 
     @ApiOperation(value="删除用户", notes="根据url的id来指定删除对象")
     @ApiImplicitParam(name = "id", value = "用户ID", required = true, dataType = "Long" , paramType="path")
     @RequestMapping(value="/{id}", method=RequestMethod.DELETE)
     public String deleteUser(@PathVariable Long id) {
         users.remove(id);
         return "success";
     }
 }

public class User {

    private Long id;
    private String name;
    private Integer age;


    public Long getId() {
        return id;
    }

    public String getName() {
        return name;
    }

    public Integer getAge() {
        return age;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public void setName(String name) {
        this.name = name;
    }

    public void setAge(Integer age) {
        this.age = age;
    }
}

4. 完成上述代码添加上，启动Spring Boot程序，访问：http://localhost:8080/swagger-ui.html

原文参考地址：http://blog.didispace.com/springbootswagger2/