【问题标题】:@ApiResponse with empty response body (Spring Boot)@ApiResponse 响应体为空(Spring Boot)
【发布时间】:2020-06-04 17:38:53
【问题描述】:

我正在寻找一种方法来告诉 swagger 某个 API 响应代码没有响应正文。例如,获取响应可以返回 200 代码并将实际对象作为响应,或者如果与传递的 ID 关联的对象不存在,则返回 404:

@ApiResponses(value = {
    @ApiResponse(responseCode = "200", description = "Object found"),
    @ApiResponse(responseCode = "404", description = "Invalid object ID", content = @Content)
})

这是我能想到的最接近的东西,但它并不完美,我仍然在 404 响应的描述下得到一个烦人的“媒体类型”。 谢谢!

【问题讨论】:

  • 为什么不能使用responseCode 204?
  • 如果我想要一个额外的响应代码,例如 403(您无权访问此对象)怎么办?我想通过响应代码来处理最重要的特殊情况,这样用户就不必为响应正文而烦恼...

标签: java rest spring-boot swagger openapi


【解决方案1】:

这可能是更好(也更短)的方式:

@ApiResponse(
   responseCode = "404", 
   description = "Not found", 
   content = @Content(schema = @Schema(hidden = true))) 

【讨论】:

    【解决方案2】:

    如果您没有指定@ApiResponse 注释的content 属性,则控制器方法的返回类型将是您的响应内容。为了防止这种情况,明确定义content

    @ApiResponse(responseCode = "200", description = "OK",
                 content = @Content(schema = @Schema(implementation = Void.class)))
    

    或者您可以直接返回ResponseEntity<Void>

    【讨论】:

    • Void.class 是实现参数的默认值,没有帮助。不幸的是,我的方法没有返回 void。这就是我得到的:ibb.co/6ZDNynR
    【解决方案3】:

    您可以在 v2 中的方法之上使用以下内容

    @ApiResponses(value = {
            @ApiResponse(code = 200, message = "Success", response = YourObject.class),
            @ApiResponse(code = 401, message = "Unauthorized"),
            @ApiResponse(code = 403, message="Forbidden"),
            @ApiResponse(code = 404, message = "Not Found"),
            @ApiResponse(code = 500, message = "Failure")
    })
    

    对于 V3,您可以尝试这样的操作,以防您的方法返回某个对象

    @Operation(summary = "Add a new object", description = "", tags = { "yourObject" })
    @ApiResponses(value = { 
            @ApiResponse(responseCode = "201", description = "Object created",content = @Content(schema = @Schema(implementation = YourObject.class))), 
            @ApiResponse(responseCode = "400", description = "Invalid input"), 
            @ApiResponse(responseCode = "409", description = "Object already exists") })    
            @PostMapping(value = "/your-url", consumes = {"application/json","application/xml" })
            public ResponseEntity<YourObject> addObject(
                ...
                return ...
            }
    

    如果你的方法返回 void,试试这个

    @Operation(summary = "Update an existing object", description = "", tags = { "yourObject" })
    @ApiResponses(value = {
            @ApiResponse(responseCode = "200", description = "successful operation"),
            @ApiResponse(responseCode = "400", description = "Invalid ID supplied"),
            @ApiResponse(responseCode = "404", description = "Object not found"),
            @ApiResponse(responseCode = "405", description = "Validation exception") })  
            @PutMapping(value = "/your-url/{id}", consumes = { "application/json", "application/xml" })  
            public ResponseEntity<Void> addObject(
                ...
                return ...
            }
    

    【讨论】:

    • 我使用的是oas v3注解,你的解决方案是基于v2的。
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