java - 包含在正文中时缺少请求参数

Question

我正在发布一个 POJO，但出现错误，指出未包含该字段。

Assets POJO

public class Asset {

    private MultipartFile[] files;
    private String name;
    private String meta;

    //Constructor/Getters n Setters
}

资源方法

@PostMapping("asset")
public ResponseEntity uploadAsset(@RequestParam("asset") Asset asset) {
    System.out.println(asset);
    return new ResponseEntity(HttpStatus.ACCEPTED);
}

PostMan JSON 正文

{
    "asset" : {
        "files": [
            "@/home/Downloads/1.jpeg",
            "@/home/Downloads/2.jpeg"   
        ],
        "name": "assetName",
        "meta": "assetMeta"
    }
}

PostMan JSON 响应

{
    "timestamp": "2019-10-29T20:46:19.536+0000",
    "status": 400,
    "error": "Bad Request",
    "message": "Required Asset parameter 'asset' is not present",
    "path": "/asset"
}

我不明白为什么当我将其包含在 JSON 正文中时，会收到 Required Asset parameter 'asset' is not present 消息。对此有什么想法吗？

Answer 1

使用@RequestBody而不是@RequestParam

public ResponseEntity uploadAsset(@RequestBody Asset asset) {