[英]Vapor upload multiple files at once
我想在一个POST请求中上传多个图像。 目前,我的文件上传请求部分是一个文件,如下所示:
return try req.content.decode(File.self).flatMap(to: Image.self) { (file) in
try file.data.write(to: URL(fileURLWithPath: DirectoryConfig.detect().workDir + localImageStorage + file.filename))
return try Image(userID: user.requireID(), url: imageStorage + file.filename, filename: file.filename).save(on: req)
}
这很好用。 现在,我尝试将.decode(File.self)
更改为.decode([File].self)
,并为所有文件执行循环。
尝试使用Postman中的data[]
参数上传图像时,出现以下错误:
不支持嵌套表单数据解码。
我该如何解决这个问题?
以下示例运行良好,已经多次测试🙂
struct MyPayload: Content {
var somefiles: [File]
}
func myUpload(_ req: Request) -> Future<HTTPStatus> {
let user: User = try req.requireAuthenticated()
return try req.content.decode(MyPayload.self).flatMap { payload in
let workDir = DirectoryConfig.detect().workDir
return payload.somefiles.map { file in
let url = URL(fileURLWithPath: workDir + localImageStorage + file.filename)
try file.data.write(to: url)
return try Image(userID: user.requireID(), url: imageStorage + file.filename, filename: file.filename).save(on: req).transform(to: ())
}.flatten(on: req).transform(to: .ok)
}
}
顺便说一句,你也可以在函数参数中完全声明你的有效载荷
func myUpload(_ req: Request, _ payload: MyPayload) -> Future<HTTPStatus> {
let user: User = try req.requireAuthenticated()
let workDir = DirectoryConfig.detect().workDir
return payload.somefiles.map { file in
let url = URL(fileURLWithPath: workDir + localImageStorage + file.filename)
try file.data.write(to: url)
return try Image(userID: user.requireID(), url: imageStorage + file.filename, filename: file.filename).save(on: req).transform(to: ())
}.flatten(on: req).transform(to: .ok)
}
唯一的区别是在路由器上声明端点功能
router.post("upload", use: myUpload)
VS
router.post(MyPayload.self, at: "upload", use: myUpload)
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.