项目结构

project

pom.xml添加依赖

    <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>

Swagger2.java

package com.inverseli.learning;

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;

/**  
 * @date：2018年9月22日 上午10:21:17    
 * @author liyuhao
 * @version 1.0   
 * @since JDK 1.8  
 * @description：  Swagger2配置类
 */
@Configuration
@EnableSwagger2
public class Swagger2 {

    @Bean
    public Docket createRestApi() {
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())
                .select()
                .apis(RequestHandlerSelectors.basePackage("com.inverseli.learning"))
                .paths(PathSelectors.any())
                .build();
                
    }
    // api信息
    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title("springboot + Swagger2")
                .description("personal study")
                .termsOfServiceUrl("baidu.com")
                .contact("sunf")
                .version("1.0")
                .build();
                
    }
    
}

apiInfo具体显示

image.png

UserController.java

package com.inverseli.learning.controller;

import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

import com.inverseli.learning.entity.User;

import io.swagger.annotations.ApiImplicitParam;
import io.swagger.annotations.ApiImplicitParams;
import io.swagger.annotations.ApiOperation;

/**  
 * @date：2018年9月22日 上午10:31:24    
 * @author liyuhao
 * @version 1.0   
 * @since JDK 1.8  
 * @description：  
 */
@RestController
@RequestMapping(value="/users")
public class UserController {

    
        // 类似与ConcurrentHashMap，Map同步
        static Map<Long,User> users = Collections.synchronizedMap(new HashMap<Long,User>());
        
        
        // @GetMapping = @RequestMapping(value="/",method=RequestMethod.GET)
        @ApiOperation(value="获取用户列表",notes="")
        @RequestMapping(value="/",method=RequestMethod.GET)
        public List<User> getUserList() {
            List<User> userList = new ArrayList<User>(users.values());
            return userList;
        }
        
        @ApiOperation(value="创建用户",notes="根据User对象创建用户")
        @ApiImplicitParam(name="user",value="用户实体类",required=true,dataType="User")
        @PostMapping("/")
        public String postUser(@ModelAttribute User user) {
            // @ModelAttribute绑定参数，或者 @RequestParam从页面传递参数
            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")
        @GetMapping(value="/{id}")
        public User getUser(@PathVariable Long id) {
            // url的id可通过@PathVariable绑定到参数中
            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, @ModelAttribute User user) {
            // 处理"/users/{id}"的PUT请求，用来更新User信息
            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) {
            // 处理"/users/{id}"的DELETE请求，用来删除User
            users.remove(id);
            return "success";
        }


}

其中的api注解都很好理解

结果

http://localhost:8080/swagger-ui.html

swagger-ui

还可以在页面测试api