Swift 5 & Alamofire 5 : GET method ERROR: Alamofire.AFError.URLRequestValidationFailureReason.bodyDataInGETRequest(22 bytes)

Question

I am trying to get records from Database using Alamofire. I am sending parameters in GET request as below.

let headers : HTTPHeaders = ["x-access-token": "\(t)","username":"\(Base.sharedManager.user)","password":"\(Base.sharedManager.pass)"]
let parm : [String: Any] = ["search_str" : self!.searchStr]
// let searchUrl = Base.sharedManager.URL+"questions/get/"+self!.searchStr
let searchUrl = Base.sharedManager.URL+"questions/get/"

AF.request(searchUrl, method: .get, parameters: parm, encoding:JSONEncoding.default , headers: headers, interceptor: nil).response { (responseData) in
    guard let data = responseData.data else {
        debugPrint("Error getting question data", responseData.error as Any)
        self?.showNoResults()
        return
    }

    do {
        let sResults = try JSONDecoder().decode(SearchResults.self, from: data)
        self!.searchReturn = [sResults]
        self!.qSearchTV.reloadData()
    } catch {
        self?.showNoResults()
        print("Error retriving questions \(error)")
    }                        
}

Got the error below when above code executed: "Error getting question data" Optional(Alamofire.AFError.urlRequestValidationFailed(reason: Alamofire.AFError.URLRequestValidationFailureReason.bodyDataInGETRequest(23 bytes)))

Solution 1

Use URLEncoding.default instead of JSONEncoding.default

AF.request(path, 
          method: .get, 
      parameters: params, 
        encoding: URLEncoding.default, 
         headers: nil)
  .response { (responseData) in

}

Solution 2

Alamofire 5 and Apple's 2019 frameworks now produce an error when you try to make a GET request with body data, as such a request is invalid. I would suggest checking to make sure that's what your server is expecting, and if it does really require body data for GET requests, reach out to the API provider and request a change, as no device running Apple's 2019 OSes will be able to make such a request.

Solution 3

You have to remove the "parameters" parameter.

Instead of doing this:

AF.request("https://httpbin.org/get",
              method: .get,
              parameters: [:],
              encoding: URLEncoding.httpBody,
              headers: [:])

Do this:

AF.request("https://httpbin.org/get",
              method: .get,
              encoding: URLEncoding.httpBody,
              headers: [:])

Comments

[Admin]

Got the point. The specific reason for passing parameter is, i cant send the non English chars thru URL string like “let searchUrl = Base.sharedManager.URL+"questions/get/"+self!.searchStr“. So I changed this to send thru body in get method.

[Jon Shier]

You can send non-English characters through the URL just fine, you just need to percent encode them first.

[Hamed Nova]

may i ask whats the difference betweent these two?

[gtrujillos]

@HamedNova, I guess the problem is because the GET method does not have body parameters.

[user2061097]

@gts why not? I read the docs and you are correct. If you want to use GET, just add URL to search parameters. If you add parameters, it will throw an error.