使用swagger作为restful api的doc文档生成

　　 @Bean
    public Docket api() {
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())
                .select()
                .apis(RequestHandlerSelectors.withMethodAnnotation(ApiOperation.class))
                .build();
    }

//本controller的功能描述
@Api(value = "pet", description = "the pet API")
public interface PetApi {

    //option的value的内容是这个method的描述，notes是详细描述，response是最终返回的json model。其他可以忽略
    @ApiOperation(value = "Add a new pet to the store", notes = "", response = Void.class, authorizations = {
        @Authorization(value = "petstore_auth", scopes = {
            @AuthorizationScope(scope = "write:pets", description = "modify pets in your account"),
            @AuthorizationScope(scope = "read:pets", description = "read your pets")
            })
    }, tags={ "pet", })

    //这里是显示你可能返回的http状态，以及原因。比如404 not found, 303 see other
    @ApiResponses(value = { 
        @ApiResponse(code = 405, message = "Invalid input", response = Void.class) })
    @RequestMapping(value = "/pet",
        produces = { "application/xml", "application/json" }, 
        consumes = { "application/json", "application/xml" },
        method = RequestMethod.POST)
    ResponseEntity<Void> addPet(
    //这里是针对每个参数的描述
    @ApiParam(value = "Pet object that needs to be added to the store" ,required=true ) @RequestBody Pet body);
}

package com.test.mybatis.web.controllers;

import com.test.mybatis.domain.entity.City;
import com.test.mybatis.domain.entity.Hotel;
import com.test.mybatis.domain.mapper.CityMapper;
import com.test.mybatis.domain.mapper.HotelMapper;
import com.test.mybatis.domain.model.common.BaseResponse;
import io.swagger.annotations.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;

import java.util.List;

/**
 * Created by miaorf on 2016/9/10.
 */

@Api(value = "Test", description = "test the swagger API")
@RestController
public class TestController {

    @Autowired
    private CityMapper cityMapper;
    @Autowired
    private HotelMapper hotelMapper;

    @ApiOperation(value = "get city by state", notes = "Get city by state", response = City.class)
    @ApiResponses(value = {@ApiResponse(code = 405, message = "Invalid input", response = City.class) })
    @RequestMapping(value = "/city", method = RequestMethod.GET)
    public ResponseEntity<BaseResponse<City>>  getCityByState(
            @ApiParam(value = "The id of the city" ,required=true ) @RequestParam String state){

        City city = cityMapper.findByState(state);
        if (city!=null){
            BaseResponse response = new BaseResponse(city,true,null);
            return new ResponseEntity<>(response, HttpStatus.OK);
        }
        return new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR);
    }

    @ApiOperation(value = "save city", notes = "", response = City.class)
    @RequestMapping(value = "/city", method = RequestMethod.POST)
    public ResponseEntity<BaseResponse<City>> saveCity(
            @ApiParam(value = "The id of the city" ,required=true ) @RequestBody City city){

        int save = cityMapper.save(city);
        if (save>0){
            BaseResponse response = new BaseResponse(city,true,null);
            return new ResponseEntity<>(response, HttpStatus.OK);
        }
        return new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR);
    }

    @ApiOperation(value = "save hotel", notes = "", response = Hotel.class)
    @RequestMapping(value = "/hotel", method = RequestMethod.POST)
    public ResponseEntity<BaseResponse<Hotel>> saveHotel(
            @ApiParam(value = "hotel" ,required=true ) @RequestBody Hotel hotel){

        int save = hotelMapper.save(hotel);
        if (save>0){
            BaseResponse response = new BaseResponse(hotel,true,null);
            return new ResponseEntity<>(response, HttpStatus.OK);
        }
        return new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR);
    }

    @ApiOperation(value = "get the hotel", notes = "get the hotel by the city id", response = Hotel.class)
    @RequestMapping(value = "/hotel", method = RequestMethod.GET)
    public ResponseEntity<BaseResponse<Hotel>> getHotel(
            @ApiParam(value = "the hotel id" ,required=true ) @RequestParam Long cid){

        List<Hotel> hotels = hotelMapper.selectByCityId(cid);
        return new ResponseEntity<>(new BaseResponse(hotels,true,null), HttpStatus.OK);
    }

    @ApiOperation(value = "update the hotel", notes = "update the hotel", response = Hotel.class)
    @RequestMapping(value = "/hotel", method = RequestMethod.PUT)
    public ResponseEntity<BaseResponse<Hotel>> updateHotel(
            @ApiParam(value = "the hotel" ,required=true ) @RequestBody Hotel hotel){

        int result = hotelMapper.update(hotel);
        return new ResponseEntity<>(new BaseResponse(result,true,null), HttpStatus.OK);
    }


    @ApiOperation(value = "delete the  hotel", notes = "delete the hotel by the hotel id", response = City.class)
    @RequestMapping(value = "/hotel", method = RequestMethod.DELETE)
    public ResponseEntity<BaseResponse<Hotel>> deleteHotel(
            @ApiParam(value = "the hotel id" ,required=true ) @RequestParam Long htid){

        int result = hotelMapper.delete(htid);
        return new ResponseEntity<>(new BaseResponse(result,true,null), HttpStatus.OK);
    }

}

@Controller
public class HomeController {

    @RequestMapping(value = "/swagger")
    public String index() {
        System.out.println("swagger-ui.html");
        return "redirect:swagger-ui.html";
    }
}