angular Spring 引导文件上传示例

Question

我想将文件上传到 Spring 启动后端，我应该如何在 postrequest 中将 Formdata 作为 requestparam 发送，我尝试了以下代码

angular 服务 class 代码

let headers=new HttpHeaders({
               'Content-Type="multipart/form-data'
                })
                const formData:FormData=new FormData();
                formdata.apend('file',file);
                 return this.http.post(uploaadfile,{params:{
                 file:formData,
                  contracttemplateid:28
                  }},options);

spring 引导控制器代码

@postmapping
uploadfile(@requestparam("file") MultipartFile 
file,@requestparam("contracttemplateid") long id)
{
}

Answer 1

Uploadfile(formData: FormData, FileName: string){    
   return this.http.post('URL',formData,{'params': {filename : FileName}});
  }

let fd = new FormData();
let FileName = "FileName";

fd.append(SeletedFile, FileName)

Uploadfile(fd,FileName);