Question

My Swift 3客户端代码：

    Alamofire.upload(multipartFormData: { (multipartFormData) in
        let path = "\(Bundle.main.resourcePath!)/images"
        let all = try? FileManager.default.contentsOfDirectory(at: URL(string: path)!, includingPropertiesForKeys: nil, options: [])

        let filtered = all!.filter { $0.pathExtension == "jpg" }
        for item in filtered {
            let url = URL(fileURLWithPath: item.path, isDirectory: false)
            multipartFormData.append(url, withName: item.path)
        }

    }, to: "http://localhost:3000/upload") {
        (encodingResult) in
        switch encodingResult {
        case .success(let upload, _, _):
            upload.responseJSON { response in
                debugPrint(response)
            }
        case .failure(let encodingError):
            print(encodingError)
        }
    }

我的服务器代码：

app.post('/upload', (req,res) => {
  console.log(req.files)
  res.send('{"status":"ok"}')
})

但是req.files是未定义的。我想知道原因是什么。如何实现NodeJ？

编辑于26/6/2017（已解决！）：

按照Svenskunganka的建议，我在我的NodeJs代码中添加了multer：

const multer  = require('multer')
const upload = multer({ dest: 'uploads/' })

app.post('/photos/upload', upload.array('photos', 12), (req, res) => {
  console.log(req.files)
  res.send('{"status":"ok"}')
})

我的快捷代码：

    Alamofire.upload(multipartFormData: { (multipartFormData) in
        let path = "\(Bundle.main.resourcePath!)/images"
        let all = try? FileManager.default.contentsOfDirectory(at: URL(string: path)!, includingPropertiesForKeys: nil, options: [])

        let filtered = all!.filter { $0.pathExtension == "jpg" }
        for item in filtered {
            let url = URL(fileURLWithPath: item.path, isDirectory: false)
            multipartFormData.append(url, withName: "photos", fileName: url.lastPathComponent, mimeType: "image/jpeg")
        }

    }, to: "http://localhost:3000/upload") {
        (encodingResult) in
        switch encodingResult {
        case .success(let upload, _, _):
            upload.responseJSON { response in
                debugPrint(response)
            }
        case .failure(let encodingError):
            print(encodingError)
        }
    }

然后它工作正常。需要记住的一点是，upload.array('photos', 12)中的数字 12 是将上传的多部分的最大数量。如果数字大于12，那么将得到一个＆＃34; Undefined＆＃34;服务器出错。

用于上传multipart的NodeJs Server实现

0 个答案: