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  • 如何使用swagger(一)

    Swagger使用

    1、描述

    Swagger 是一个规范和完整的框架,用于生成、描述、调用和可视化 RESTful 风格的 Web 服务。

    作用:

    1.接口的文档在线自动生成。

    2.功能测试。

    2、运用

    a) maven导入Swagger

    <dependency>
          <groupId>io.springfox</groupId>
          <artifactId>springfox-swagger2</artifactId>
          <version>2.6.1</version>
    </dependency>
    <dependency>
         <groupId>io.springfox</groupId>
         <artifactId>springfox-swagger-ui</artifactId>
         <version>2.6.1</version>
    </dependency>

    b) 创建Swagger2配置类

    /**
     * @program: jpademo
     * @description: Swagger
     * @author: ZengGuangfu
     * @create 2018-10-24 10:12
     */
    ​
    @Configuration
    @EnableSwagger2
    public class Swagger {
    ​
       @Bean
       public Docket docket(){
           return new Docket(DocumentationType.SWAGGER_2)
             .apiInfo(apiInfo())
             .select()
             .apis(RequestHandlerSelectors.basePackage("com.example.springbootjpa.jpademo.controller"))
             .paths(PathSelectors.any())
             .build();
       }
    ​
       public ApiInfo apiInfo(){
           return new ApiInfoBuilder()
             .title("利用swagger2构建的API文档")
             .description("用restful风格写接口")
             .termsOfServiceUrl("")
             .version("1.0")
             .build();
       }
    }

    如上所示,docket() 方法创建Docket的Bean对象,apiInfo()则是创建ApiInfo的基本信息。

    链式方法解析:

    3、注解及其说明

    @Api : 用在类上,说明该类的主要作用。

    @ApiOperation:用在方法上,给API增加方法说明。

    @ApiImplicitParams : 用在方法上,包含一组参数说明。

    @ApiImplicitParam:用来注解来给方法入参增加说明。

    @ApiResponses:用于表示一组响应。

    @ApiResponse:用在@ApiResponses中,一般用于表达一个错误的响应信息

    ​ l code:数字,例如400

    ​ l message:信息,例如"请求参数没填好"

    ​ l response:抛出异常的类

    @ApiModel:用在返回对象类上,描述一个Model的信息(一般用在请求参数无法使用@ApiImplicitParam注解进行描述的时候)

    ​ l @ApiModelProperty:描述一个model的属性

    以下仅仅是一个例子,其实我个人在开发中很少使用@ApiImplicitParam 作为参数的描述,这样描述在参数过多的条件下会有点麻烦。个人一般是将参数封装为一个完整对象(特别是GET方法),并利用@ApiModel注解去定义参数,如果不需要作为查询条件的,则加一个hidden = true,如果是必填属性,则增加一个required = true即可。

    例子:

    /**
     * @program: jpademo
     * @description: EmployeeController
     * @author: ZengGuangfu
     * @create 2018-10-23 11:07
     */
    ​
    @RestController
    @RequestMapping("emp")
    @Api(value = "用户管理类")
    public class EmployeeController {
    ​
     @Autowired
     private EmployeeReposiroty employeeReposiroty;
    ​
          /**
          * 增加人物
          * @param employee
          * @return
          */
         @PostMapping(value = "employee")
         @ApiOperation(value = "新增一个用户",notes = "新增之后返回对象")
         @ApiImplicitParam(paramType = "query",name = "employee",value = "用户",required = true)
         @ApiResponse(code = 400,message = "参数没有填好",response = String.class)
         public String insert(Employee employee){
             Employee employee1 = employeeReposiroty.save(employee);
             if(employee1 != null) {
                 return SysNode.Judge.SUCCESS.getResult();
             }else {
                 return SysNode.Judge.FAILD.getResult();
             }
         }
    ​
          /**
          * 删除单个用户
          * @param id
          * @return
          */
          @DeleteMapping(value = "employee/{id}")
          @ApiOperation(value = "删除用户",notes = "根据成员id删除单个用户")
          @ApiImplicitParam(paramType = "path",name = "id",value = "用户id",required = true,dataType = "Integer")
          @ApiResponse(code = 400,message = "参数没有填好",response = String.class)
          public String delete(@PathVariable("id")Integer id){
               try{
                    employeeReposiroty.deleteById(id);
                    return SysNode.Judge.SUCCESS.getResult();
               }catch (Exception e){
                    e.printStackTrace();
                   return SysNode.Judge.FAILD.getResult();
               }
          }
    ​
          /**
          * 修改单个成员
          * @param employee
          * @return
          */
          @PutMapping(value = "employee/{id}")
          @ApiOperation(value = "修改用户信息",notes = "根据成员id修改单个用户")
          public String update(Employee employee){
               /**
               * save方法如果参数属性缺失,会导致原本存在的数据为null
               */
               Employee employee1 = employeeReposiroty.saveAndFlush(employee);
               if (employee1 != null) {
                    return SysNode.Judge.SUCCESS.getResult();
               }else {
                   return SysNode.Judge.FAILD.getResult();
               }
          }
    ​
          /**
          * 获取所有成员,升序排列
          * @return
          */
          @GetMapping(value = "employee/sort")
          @ApiOperation(value = "查询全部用户",notes = "默认根据升序查询全部用户信息")
          public List<Employee> findAll(){
               Sort orders = new Sort(Sort.Direction.DESC,"employeeId");
               List<Employee> employeeList = employeeReposiroty.findAll(orders);
               return employeeList;
          }
    ​
          /**
         * 获取所有成员,升序排列
         * @return
          */
          @GetMapping(value = "employee/pageSort")
          @ApiOperation(value = "查询用户信息",notes = "查询用户信息")
          @ApiImplicitParams({
               @ApiImplicitParam(paramType = "query",name = "sort",value = "排序方式:asc|desc",dataType = "String",required = true),
               @ApiImplicitParam(paramType = "query",name = "pagenumber",value = "第几页",dataType = "Integer",required = true),
               @ApiImplicitParam(paramType = "query",name = "pageSize",value = "分页数",dataType = "Integer",required = true)
          })
          public List<Employee> findAllByPage(String sort,Integer pagenumber,Integer pageSize){
               try {
                    Sort.Direction sortlast;
                    if("desc".equals(sort.toLowerCase())){
                         sortlast = Sort.Direction.DESC;
                   }else{          
                          sortlast = Sort.Direction.ASC;
                   }
                         Sort orders = new Sort(sortlast, "employeeId");
                         Pageable pageable = new PageRequest(pagenumber, pageSize, orders);
    ​
                         Page<Employee> employeePage = employeeReposiroty.findAll(pageable);
                         List<Employee> employeeList = employeePage.getContent();
                         return employeeList;
               }catch (Exception e){
                    e.printStackTrace();
                    return null;
               }
          }
        /**
         * 自定义拓展jpa,根据用户名查找单个用户
         * @param username
         * @return
         */
         @GetMapping(value = "employee/find/{username}")
         @ApiOperation(value = "查询用户信息",notes = "根据用户登录名查询该用户信息")
         @ApiImplicitParam(paramType = "path",name = "username",value = "用户登录名",required = true,dataType = "String")
         public Employee findByUsername(@PathVariable("username") String username){
             List<Employee> employeeList = employeeReposiroty.findByUserNameOrderByEmployeeIdAsc(username);
             if (employeeList != null && !employeeList.isEmpty()){
                 return employeeList.get(0);
             }
             return null;
         }
    ​
         /**
         * 测试用
         * @return
         */
         @GetMapping(value = "employee/grade")
         public List<Object[]> findEmployeeAndGrade(){
             Pageable pageable = new PageRequest(0,3);
    ​
             Page<Object[]> page = employeeReposiroty.findEmployeeAndGrade(pageable);
             System.out.println(page.getTotalElements()+"----------结果总数------------");
             System.out.println(page.getTotalPages()+"--------根据pageSize的总页数-----------");
             System.out.println(page.getNumber()+"--------当前页数,pageNumber----------");
             System.out.println(page.getNumberOfElements()+"--------当前页有几个数据--------");
             System.out.println(page.getSize()+"---------PageSize-------------");
             System.out.println(page.getSort()+"---------排序方式,没有则是'UNSORTED'----------");
    ​
             List<Object[]> objects = page.getContent();
             return objects;
        }
    }

    4、测试登录 localhost:8080/swagger-ui.html

     API 操作测试,修改

     

    5、@ApiModel 接收对象传参

    注意: 在后台采用对象接收参数时,Swagger自带的工具采用的是JSON传参, 测试时需要在参数上加入@RequestBody,正常运行采用form或URL提交时候请删除。

    例子:

    /**
     * @program: jpademo
     * @description: Employee
     * @author: ZengGuangfu
     * @create 2018-10-23 10:20
     */
    ​
    @Data
    @Entity
    @Table(name = "employee")
    @ApiModel(value = "用户对象模型")
    public class Employee {
    ​
       @Id
       @GeneratedValue(strategy = GenerationType.IDENTITY)
       @Column(name = "employee_id")
       @Min(value = 1,groups = Employee.Children.class)
       private Integer employeeId;
    ​
       @Column(name = "user_name",length = 20,nullable = true)
       @ApiModelProperty(value = "userName",required = true)
       private String userName;
    ​
       @Column(nullable = true)
       @Size(min = 0,max = 65,message = "年龄超过范围限制",groups = Employee.Audit.class)
       @ApiModelProperty(value = "age",required = true)
       private Integer age;
    ​
       @Column(name="gra_id")
       @ApiModelProperty(value = "graId",required = true)
       //@Digits(integer = 12,fraction = 4)  //限制必须为一个小数,且整数部分的 位数 不能超过integer,小数部分的 位数 不能超过fraction
       private Integer graId;
    ​
       public interface Audit{};
    ​
       public interface Children{};
    ​
    }
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  • 原文地址:https://www.cnblogs.com/qingmuchuanqi48/p/12288686.html
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