Ios 后端使用URLSession.shared.dataTask接收post方法的错误数据
我正在使用Ios 后端使用URLSession.shared.dataTask接收post方法的错误数据,ios,node.js,swift,Ios,Node.js,Swift,我正在使用URLSession.shared.dataTask以base64格式发布图像数据,但在后端我接收到错误的数据(“+”替换为“”)。Post数据在base64中包含不同的参数和图像数据,但在req.body中,我发现body中所有出现的“+”都替换为“”。在postman和Android中,它可以工作并存储图像 func postDataToServer ( method : String, api_for : String, postData : String, completion
URLSession.shared.dataTask
以base64格式发布图像数据,但在后端我接收到错误的数据(“+”替换为“”)。Post数据在base64中包含不同的参数和图像数据,但在req.body
中,我发现body中所有出现的“+”都替换为“”。在postman和Android中,它可以工作并存储图像
func postDataToServer ( method : String, api_for : String, postData : String, completion: @escaping (_ reponse : [String:AnyObject]?, _ success : Int, _ message : String) -> Void) {
let getUrl = "http://xx.xx.xx.xx/timeSheet/saveImage"
let request = NSMutableURLRequest(url: NSURL(string: getUrl)! as URL,
cachePolicy: .useProtocolCachePolicy,
timeoutInterval: 60.0)
request.httpMethod = method
request.allHTTPHeaderFields = headers
if method == "POST" {
var post = postData
post.append("&devicename=\(UIDevice.current.modelName) \(UIDevice.current.systemVersion)")
let postData = NSMutableData(data: "\(post)".data(using: String.Encoding.utf8)!)
request.httpBody = postData as Data
let datastring = NSString(data: postData as Data, encoding: String.Encoding.utf8.rawValue)
}
let dataTask = URLSession.shared.dataTask(with: request as URLRequest) { data, response, error in
guard let data = data, error == nil else {
print(error!)
completion (nil, 1, (error?.localizedDescription)!)
return
}
do {
let responseObject = try JSONSerialization.jsonObject(with: data, options: [])
let response = self.responseData(data: responseObject)
completion (response.reponse, response.statuscode, response.message)
} catch let jsonError {
print(jsonError)
completion (nil, 1,"Data Formate Error")
print(String(data: data, encoding: .utf8)!)
}
}
dataTask.resume()
}
后端代码node.js:
router.post('/saveImage', async (req, res) =>{
var response = {
"statuscode" : 0,
"statusmessage" : "Failed",
"result" : [],
}
var rawBody = String(req.body.photo)
const base64Data = rawBody.replace(/^data:([A-Za-z-+/]+);base64,/, '');
console.log(req.body.base64Data)
require("fs").writeFile("/Users/sid/Desktop/FreeLance/WPD/out.jpeg", base64Data, 'base64', function(err) {
console.log(err);
res.send( JSON.stringify( response ));
});
})
代码有什么问题吗?
我应该使用Alamofire吗?如果没有示例数据,很难判断。我猜服务器端的正则表达式(
const base64Data=rawBody.replace(/^data:([A-Za-z-+/]+);base64,/,”;
)是错误的。正则表达式仅用于删除“data:image/jpeg;base64,”来自image data base64的字符串,但它与邮递员呼叫和android设备一起工作。@sid mhatre:您正在发出一个多部分请求,而不是普通的post请求,我没有看到内容类型集或格式数据来满足多部分请求的需要。我没有发出多部分请求`let headers=[“content type”:“application/x-www-form-urlencoded”]`。