我将NodeJs / ExpressJs作为后端服务器(Ubuntu 18.04.3 LTS),当我从前端(JavaScript)或POSTMAN发出AJAX GET或POST请求时,它工作得很好(符合预期)。 当我使用Alamofire(swift)发出GET请求时,它也按预期工作,但是当我从Alamofire发出POST请求时,空数据将发送(或接收)到NodeJs / ExpressJs服务器。
在我的NodeJs服务器中,我正在使用强大的语法来解析正文(FormData),而在我的前端(JavaScript)中,我正在使用FormData api和标头content-type: false
发送数据。
当我从Alamofire向我的后端服务器发送POST请求时,在其中设置了标头
但仍在发送空数据(或在服务器上接收到空数据)
alamofire代码
func uploadPostWithImageAndText() {
let parameters = [
"shared" : "Public",
"post": self.textView.text
] as [String : Any]
let recovedUserJsonData = UserDefaults.standard.object(forKey: "userData")
let recovedUserJson = NSKeyedUnarchiver.unarchiveObject(with: recovedUserJsonData as! Data) as! NSDictionary
// print(recovedUserJson)
var token = recovedUserJson.value(forKey: "token") as! String
token = String(format: "%@", token)
// print(token)
let headers = [
"Authorization" : token
]
let imgData = imgView.image?.jpegData(compressionQuality: 0.2)
Alamofire.upload(multipartFormData: { multipartFormData in
//Parameter for Upload files
multipartFormData.append(imgData!, withName: "fileUpload",fileName: "fileUpload" , mimeType: "image/png")
for (key, value) in parameters
{
multipartFormData.append(key.data(using: .utf8)!, withName: value as! String)
}
}, usingThreshold:UInt64.init(),
to: "https://apis.example.com/apis/feed/create-post", //URL Here
method: .post,
headers: headers, //pass header dictionary here
encodingCompletion: { (result) in
switch result {
case .success(let upload, _, _):
print("the status code is :")
upload.uploadProgress(closure: { (progress) in
print("something")
})
upload.responseJSON { response in
print("the resopnse code is : \(response.response?.statusCode)")
print("the response is : \(response)")
}
break
case .failure(let encodingError):
print("the error is : \(encodingError.localizedDescription)")
break
}
})
在ExpressJ中,我具有用于FormData的正文解析器
app.use(bodyParser.urlencoded({ limit: '50mb', extended: true }));
app.use(bodyParser.json({ limit: '50mb' }));
我正在使用formidable
模块来解析正文。
我在Alamofire中遇到错误
<4> load failed with error Error Domain=NSURLErrorDomain Code=-1001 "The request timed out." UserInfo={_kCFStreamErrorCodeKey=-2102, NSUnderlyingError=0x60000193f150 {Error Domain=kCFErrorDomainCFNetwork Code=-1001 "(null)" UserInfo={_kCFStreamErrorCodeKey=-2102, _kCFStreamErrorDomainKey=4}}, _NSURLErrorFailingURLSessionTaskErrorKey=LocalDataTask <16AA23FC-8DFC-4598-B032-96636892F2B7>.<4>, _NSURLErrorRelatedURLSessionTaskErrorKey=(
"LocalDataTask <16AA23FC-8DFC-4598-B032-96636892F2B7>.<4>"
), NSLocalizedDescription=The request timed out., NSErrorFailingURLStringKey=https://apis.example.com/apis/feed/create-post, NSErrorFailingURLKey=https://apis.example.com/apis/feed/create-post, _kCFStreamErrorDomainKey=4} [-1001]
并且我在后端将控制台记录了传入请求
console.log('fields', fields);
路线
router.post('/create-post' ,postCont.createPost);
其日志为空
fields {}
我不明白为什么后端(api端点)会收到空数据,谢谢。
答案 0 :(得分:0)
我用nodemon替换了pm2,然后开始工作,我认为问题出在pm2。