SwaggerAPI管理工具

代码侵入式注解

遵循YAML文档格式

非常适合三端（PC、iOS及Android）的API管理，尤其适合前后端完全分离的架构模式。

减少没有必要的文档，符合敏捷开发理念

功能强大

接口的文档在线自动生成

功能测试

1. 大大减少前后端的沟通

2. 方便查找和测试接口

3. 提高团队的开发效率

4. 方便新人了解项目

引入依赖

     io.springfox 
     springfox-swagger2     
     2.9.2

 
    io.springfox 
    springfox-swagger-ui 
    2.9.2

配置类

@Configuration
@EnableSwagger2
public class SwaggerConfig {
    @Bean
    public Docket createRestApi() {
        return new Docket(documentationType.SWAGGER_2)
                //apiInfo指定测试文档基本信息，这部分将在页面展示
                .apiInfo(apiInfo())
                .select()
                //apis() 控制哪些接口暴露给swagger，
                // RequestHandlerSelectors.any() 所有都暴露
                // RequestHandlerSelectors.basePackage("com.info.*")  指定包位置
                .apis(RequestHandlerSelectors.basePackage("com.cbw.admin"))
                .paths(PathSelectors.any())
                .build();
    }

    //基本信息，页面展示
    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title("接口文档")
                .description("接口描述")
                //联系人实体类
                .contact(
                        new Contact(null, null, null)
                )
                //版本号
                .version("1.0.0")
                .build();
    }
}

swagger通过在controller中，声明注解，API文档进行说明

1、@Api()：用在请求的类上，表示对类的说明，也代表了这个类是swagger2的资源

2、@ApiOperation()：用于方法，表示一个http请求访问该方法的操作

3、@ApiModel()：用于响应实体类上，用于说明实体作用

4、@ApiModelProperty：用在属性上，描述实体类的属性

5、@ApiImplicitParams：用在请求的方法上，包含多@ApiImplicitParam

6、@ApiImplicitParam：用于方法，表示单独的请求参数

7、@ApiParam()：用于方法，参数，字段说明 表示对参数的要求和说明

 8、@ApiResponses：用于请求的方法上，根据响应码表示不同响应

一个@ApiResponses包含多个@ApiResponse

9、@ApiResponse：用在请求的方法上，表示不同的响应

 10、@ApiIgnore()：用于类或者方法上，不被显示在页面上

实体类

@ApiModel("用户对象模型")
public class User {  
    private Long id; 
    private String username; 
    private String password; 
    private String email;
}

controller

@RestController
@RequestMapping("/user")
@Api(tags = {"用户管理API"})
public class UserController {

    @PostMapping
    @ApiOperation(value = "新增用户", notes = "新增后返回当前用户")
    @ApiResponses({
            @ApiResponse(code = 200, message = "返回成功", response = User.class),
            @ApiResponse(code = 400, message = "参数没有填好(id==1)", response = User.class),
            @ApiResponse(code = 401, message = "权限不足(id==1)", response = User.class),
    })
    public ResponseEntity add(User user) {
        if (user.getId() == 1) {
            return new ResponseEntity<>(user, HttpStatus.BAD_REQUEST); //400
        } else if (user.getId() == 2) {
            return new ResponseEntity<>(user, HttpStatus.UNAUTHORIZED); //401
        } else {
            return ResponseEntity.ok(user);
        }
    }

    @PutMapping
    @ApiOperation(value = "修改用户", notes = "修改后返回当前用户")
    @ApiResponses({
            @ApiResponse(code = 200, message = "返回成功", response = User.class),
            @ApiResponse(code = 400, message = "参数没有填好(id==1)", response = User.class),
            @ApiResponse(code = 401, message = "权限不足(id==1)", response = User.class),
    })
    public ResponseEntity update(User user) {
        if (user.getId() == 1) {
            return new ResponseEntity<>(user, HttpStatus.BAD_REQUEST); //400
        } else if (user.getId() == 2) {
            return new ResponseEntity<>(user, HttpStatus.UNAUTHORIZED); //401
        } else {
            return ResponseEntity.ok(user);
        }
    }

    @DeleteMapping("/{id}")
    @ApiOperation(value = "删除用户", notes = "删除后返回当前id")
    @ApiResponses({
            @ApiResponse(code = 200, message = "返回成功", response = User.class),
            @ApiResponse(code = 400, message = "参数没有填好(id==1)", response = User.class),
            @ApiResponse(code = 401, message = "权限不足(id==1)", response = User.class),
    })
    @ApiImplicitParam(paramType = "path", name = "id", value = "用户主键ID", required = true)
    public ResponseEntity delete(@PathVariable Long id) {
        if (id == 1) {
            return new ResponseEntity<>(id, HttpStatus.BAD_REQUEST); //400
        } else if (id == 2) {
            return new ResponseEntity<>(id, HttpStatus.UNAUTHORIZED); //401
        } else {
            return ResponseEntity.ok(id);
        }
    }

    @GetMapping("/{id}")
    @ApiIgnore
    public ResponseEntity toUpdate(@PathVariable Long id) {
        if (id == 1) {
            return new ResponseEntity<>(id, HttpStatus.BAD_REQUEST); //400
        } else if (id == 2) {
            return new ResponseEntity<>(id, HttpStatus.UNAUTHORIZED); //401
        } else {
            return ResponseEntity.ok(id);
        }
    }

    @PostMapping("/list-page")
    @ApiOperation(value = "分页查询", notes = "得到分页查询对象pageInfo")
    @ApiImplicitParams({
            @ApiImplicitParam(paramType = "query", name = "pageNum", value = "当前页", required = false, defaultValue = "1"),
            @ApiImplicitParam(paramType = "query", name = "pageSize", value = "每页行数", required = false, defaultValue = "10")
    })
    public ResponseEntity findByPage(@RequestParam(defaultValue = "1", required = false) Integer pageNum,
                                             @RequestParam(defaultValue = "10", required = false) Integer pageSize) {
        return ResponseEntity.ok("find page result...");
    }

}

启动项目，输入localhost:端口号/swagger-ui.html