Swagger详细了解一下（长文谨慎阅读）

docker pull swaggerapi/swagger-editor
docker run -d -p 81:8080 swaggerapi/swagger-editor 
//启动，81:8080 将容器的8080端口暴露给localhost的81端口

docker pull swaggerapi/swagger-ui

【使用】

//-e：执行容器中/foo/swagger.json
//-v：将/Users/fanfan/Downloads中的swagger.json挂在到 /foo中执行
docker run -p 82:8080 -e SWAGGER_JSON=/foo/swagger.json -v /Users/jiangsuyao/Downloads:/foo swaggerapi/swagger-ui

浏览器输入：localhost:82，即可看到与Swagger-editor的显示区同样的内容

<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>

package com.abel.example;
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
@EnableSwagger2
public class Swagger2 {
    /**
     * 创建API应用
     * apiInfo() 增加API相关信息
     * 通过select()函数返回一个ApiSelectorBuilder实例,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指定要建立API的目录。
     *
     * @return
     */
    @Bean
    public Docket createRestApi() {
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())
                .select()
                .apis(RequestHandlerSelectors.basePackage("com.abel.example.controller"))
                .paths(PathSelectors.any())
                .build();
    }

    /**
     * 创建该API的基本信息（这些基本信息会展现在文档页面中）
     * 访问地址：http://项目实际地址/swagger-ui.html
     * @return
     */
    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title("Spring Boot中使用Swagger2构建RESTful APIs")
                .description("更多请关注https://blog.csdn.net/u012373815")
                .termsOfServiceUrl("https://blog.csdn.net/u012373815")
                .contact("abel")
                .version("1.0")
                .build();
    }
}

package com.abel.example.controller;

import javax.servlet.http.HttpServletRequest;
import java.util.Map;

import com.abel.example.bean.User;
import io.swagger.annotations.*;
import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;


import com.abel.example.service.UserService;
import com.abel.example.util.CommonUtil;


@Controller
@RequestMapping(value = "/users")
@Api(value = "用户的增删改查")
public class UserController {

    @Autowired
    private UserService userService;


    /**
     * 查询所有的用户
     * api :localhost:8099/users
     * @return
     */
    @RequestMapping(method = RequestMethod.GET)
    @ResponseBody
    @ApiOperation(value = "获取用户列表，目前没有分页")
    public ResponseEntity<Object> findAll() {
        return new ResponseEntity<>(userService.listUsers(), HttpStatus.OK);
    }

    /**
     * 通过id 查找用户
     * api :localhost:8099/users/1
     * @param id
     * @return
     */
    @RequestMapping(value = "/{id}", method = RequestMethod.GET)
    @ResponseBody
    @ApiOperation(value = "通过id获取用户信息", notes="返回用户信息")
    public ResponseEntity<Object> getUserById(@PathVariable Integer id) {
        return new ResponseEntity<>(userService.getUserById(Long.valueOf(id)), HttpStatus.OK);
    }


    /**
     * 通过spring data jpa 调用方法
     * api :localhost:8099/users/byname?username=xxx
     * 通过用户名查找用户
     * @param request
     * @return
     */
    @RequestMapping(value = "/byname", method = RequestMethod.GET)
    @ResponseBody
    @ApiImplicitParam(paramType = "query",name= "username" ,value = "用户名",dataType = "string")
    @ApiOperation(value = "通过用户名获取用户信息", notes="返回用户信息")
    public ResponseEntity<Object> getUserByUserName(HttpServletRequest request) {
        Map<String, Object> map = CommonUtil.getParameterMap(request);
        String username = (String) map.get("username");
        return new ResponseEntity<>(userService.getUserByUserName(username), HttpStatus.OK);
    }

    /**
     * 通过spring data jpa 调用方法
     * api :localhost:8099/users/byUserNameContain?username=xxx
     * 通过用户名模糊查询
     * @param request
     * @return
     */
    @RequestMapping(value = "/byUserNameContain", method = RequestMethod.GET)
    @ResponseBody
    @ApiImplicitParam(paramType = "query",name= "username" ,value = "用户名",dataType = "string")
    @ApiOperation(value = "通过用户名模糊搜索用户信息", notes="返回用户信息")
    public ResponseEntity<Object> getUsers(HttpServletRequest request) {
        Map<String, Object> map = CommonUtil.getParameterMap(request);
        String username = (String) map.get("username");
        return new ResponseEntity<>(userService.getByUsernameContaining(username), HttpStatus.OK);
    }


    /**
     * 添加用户啊
     * api :localhost:8099/users
     *
     * @param user
     * @return
     */
    @RequestMapping(method = RequestMethod.POST)
    @ResponseBody
    @ApiModelProperty(value="user",notes = "用户信息的json串")
    @ApiOperation(value = "新增用户", notes="返回新增的用户信息")
    public ResponseEntity<Object> saveUser(@RequestBody User user) {
        return new ResponseEntity<>(userService.saveUser(user), HttpStatus.OK);
    }

    /**
     * 修改用户信息
     * api :localhost:8099/users
     * @param user
     * @return
     */
    @RequestMapping(method = RequestMethod.PUT)
    @ResponseBody
    @ApiModelProperty(value="user",notes = "修改后用户信息的json串")
    @ApiOperation(value = "新增用户", notes="返回新增的用户信息")
    public ResponseEntity<Object> updateUser(@RequestBody User user) {
        return new ResponseEntity<>(userService.updateUser(user), HttpStatus.OK);
    }

    /**
     * 通过ID删除用户
     * api :localhost:8099/users/2
     * @param id
     * @return
     */
    @RequestMapping(value = "/{id}", method = RequestMethod.DELETE)
    @ResponseBody
    @ApiOperation(value = "通过id删除用户信息", notes="返回删除状态1 成功 0 失败")
    public ResponseEntity<Object> deleteUser(@PathVariable Integer id) {
        return new ResponseEntity<>(userService.removeUser(id.longValue()), HttpStatus.OK);
    }
}

//下载
# wget https://oss.sonatype.org/content/repositories/releases/io/swagger/swagger-codegen-cli/2.2.1/swagger-codegen-cli-2.2.1.jar
//下载之后运行，返回结果可查看其支持的语言
# java -jar swagger-codegen-cli-2.2.1.jar
Available languages: [android, aspnet5, async-scala, cwiki, csharp, cpprest, dart, flash, python-flask, go, groovy, java, jaxrs, jaxrs-cxf, jaxrs-resteasy, jaxrs-spec, inflector, javascript, javascript-closure-angular, jmeter, nancyfx, nodejs-server, objc, perl, php, python, qt5cpp, ruby, scala, scalatra, silex-PHP, sinatra, rails5, slim, spring, dynamic-html, html, html2, swagger, swagger-yaml, swift, tizen, typescript-angular2, typescript-angular, typescript-node, typescript-fetch, akka-scala, CsharpDotNet2, clojure, haskell, lumen, go-server]
//查看支持某个语言的具体使用帮助，比如java
# java -jar swagger-codegen-cli-2.2.1.jar config-help -l java

//http://petstore.swagger.io/v2/swagger.json是官方的一个例子，我们可以改成自己的服务
# java -jar swagger-codegen-cli-2.2.1.jar generate -i http://petstore.swagger.io/v2/swagger.json -l java -o samples/client/pestore/java