如何在spring中同时发送@RequestBody和@RequestPart

Question

我想使用curl在控制器中一起传递json和文件。我在控制器中有以下方法。

@PostMapping(value = /api/campaign, headers = {"content-type=multipart/mixed","content-type=multipart/form-data"})
    @ResponseBody
    @ResponseStatus(HttpStatus.CREATED)
    public @Valid ResponseDTO campaignCreator (@Valid @RequestBody CampaignCreatorDTO campaignCreatorDTO, @RequestPart("file") MultipartFile adGraphic){
}

下面是curl命令

curl -i -X POST -H "Content-Type: multipart/mixed" -d "campaignCreatorDTO={\"edipi\":123456789,\"firstName\":\"John\",\"lastName\":\"Smith\",\"email\":\"[e-mail]\"};type=application/json" -F "file=@newfile.png;type=image/png"  http://localhost:8080/api/campaign

@PostMapping(value = /api/campaign, consumes = {"multipart/form-data","multipart/mixed"})
    @ResponseBody
    @ResponseStatus(HttpStatus.CREATED)
    public @Valid ResponseDTO campaignCreator (@Valid @RequestPart("json") CampaignCreatorDTO campaignCreatorDTO, @RequestPart("file") MultipartFile adGraphic) {
}

使用JSON的Spring MVC多部分请求

这就是客户机如何将数据Paasting到服务器

let formData = new FormData()

const blob = new Blob([json], {
type: 'application/json'
});

formData.append("json", blob)
formData.append("file", values.adCreativeImageCover)

let authToken = sessionStorage.getItem("authToken")

fetch(/api/campaign, {
method: "POST",
headers: {
'Accept': 'application/json',
'X-Auth-Token': authToken,
},
mode: 'cors',
body: formData
})

Answer 1

我通过在配置中实现multipartresolver解决了这个问题。

@Bean
    public MultipartResolver multipartResolver() {
        return new StandardServletMultipartResolver();
    }