JSON DATA CORRUPTED ERROR

Question

I don't why, my json file is throwing an error as being corrupted even though json file is valid. (I have checked from json validator). Here is my code: My model:

`import Foundation

class Person:Identifiable,Decodable{

    var id:UUID?

    var Name:String

    var Address:String

    var Company:String

    var YearsofExperience:Int

}

My JSON File

[{

    "Name":"Inigo Montoya",

   "Address":"555 YouKilled My father Street",

   "Company":"CodeWithChris",

   "YearsofExperience":35

 },

 {

     "Name":"Edna Mode",

    "Address":"123 Nocape Lane",

    "Company":"CodeWithChris",

    "YearsofExperience":177

 },

 {

     "Name":"Travis Bickle",

    "Address":"99 Youtalkingtome Road",

    "Company":"CodeWithChris",

    "YearsofExperience":99

 },

 {

     "Name":"Walter Sobchak",

    "Address":"8 Dude Place",

    "Company":"CodeWithChris",

    "YearsofExperience":23

    

 },

 {

     "Name":"Jullis Winnfield",

    "Address":"25 Ezekiel Ave",

    "Company":"CodeWithChris",

    "YearsofExperience":17

 }]

ViewModel:

import Foundation

class EmployeeModel:ObservableObject{
@Published var person = [Person]()
init(){

    person.self = DataFetching.getLocalData()

}
}

2.6k

Posted by

eshansingh

Reply

Can you share the code that populates your date model from the json?

—
robnotyou
do you mean date or data

—
eshansingh
Added the code please help out

—
eshansingh

Answer 1

The error message "Invalid value around line 1, column 0." is consistent with having invalid bytes at the very start of the file. Maybe there are some non-printing (invisible) characters there for some reason? (I initially thought byte order mark, but that seems to work fine.) Try examining the file directly via this command:

$ hexdump -C <path-to-your-JSON-file> | head -1

The expected output is exactly this:

00000000  5b 7b 0a 20 20 20 20 22  4e 61 6d 65 22 3a 22 49  |[{.    "Name":"I|

If the first character isn’t the opening square bracket, that’s bad. Let us know what it shows.

Posted by

Scott J

This is a good tip. I get the exact same output as Scott J.

—
robnotyou
And if the original file does have invisible content, it could get lost when pasting the text into this forum, resulting in nobody else being able to reproduce the problem.

—
Scott J
I don’t guys but now without any changes the project has magically started working again.

—
eshansingh

Answer 2

my data fetching code is as follows (forgot to add in the question) import Foundation


class DataFetching {

    

    static func getLocalData() -> [Person] {

        

        // Parse local json file

        

        // Get a url path to the json file

        let pathString = Bundle.main.path(forResource: "data", ofType: "json")

        

        // Check if pathString is not nil, otherwise...

        guard pathString != nil else {

            return [Person]()

        }

        

        // Create a url object

        let url = URL(fileURLWithPath: pathString!)

        

        do {

            // Create a data object

            let data = try Data(contentsOf: url)

            

            // Decode the data with a JSON decoder

            let decoder = JSONDecoder()

            

            do {

                

                let EmployeeData = try decoder.decode([Person].self, from: data)

                

                // Add the unique IDs

                for e in EmployeeData {

                    e.id = UUID()

                }

                // Return the recipes

                return EmployeeData

            }

            catch {

                // error with parsing json

                print(error)

            }

        }

        catch {

            // error with getting data

            print(error)

        }

        

        return [Person]()

    }

    

}

Posted by

eshansingh

Add a Comment

Answer 3

The JSON works okay for me.
employeeModel.person.count is 5, as expected.

Xcode 13.2.1 (13C100)

Where exactly are you seeing the error (which line of code)?

Posted by

robnotyou

I am seeing an error on console that json file is invalid and my data is corrupted. also my app crashes upon launching it.

—
eshansingh
There is nothing wrong with the json that you have shared here. Your other code shared here also works okay. So your json error and app crash are caused by something that you have not yet shared.

—
robnotyou
So should I share my ui code here to see if something wrong in it ?

—
eshansingh

Add a Comment

Answer 4

My Views Code are as follows Orders are arranged properly. in the actual app




struct ETabView: View {

    var body: some View {

        TabView{

            PeopleView().tabItem{

                VStack{

                   Image(systemName:"person.3")

                   Text("Current Employees")

                }

                

                }

            DisplayPreferenceView().tabItem{

                VStack{

                 Image(systemName:"gearshape")

                 Text("Perference")

                }

            }

            

            

            

            

            

        }

    }

}



struct TabView_Previews: PreviewProvider {

    static var previews: some View {

        ETabView()

    }

}




struct PeopleView: View {

@EnvironmentObject var model:EmployeeModel

    var body: some View {

        List(model.person){ p in

            VStack{

            Text("Name:" + p.Name)

            Text("Address:" + p.Address)

            Text("Company:" + p.Company)

            Text("YearsofExperience:" + String(p.YearsofExperience))

            }

        }

    }

}



struct PeopleView_Previews: PreviewProvider {

    static var previews: some View {

        PeopleView()

    }
starting point of app
```import SwiftUI



@main

struct EmployeeManagementApp: App {

    var body: some Scene {

        WindowGroup {

            ETabView()

                .environmentObject(EmployeeModel())

        }

    }

}

Posted by

eshansingh

When you post the code for "PeopleView", use "Paste and Match Style", to avoid all the extra blank lines.

—
robnotyou

Add a Comment

Answer 5

what's wrong in the code ?

Posted by

eshansingh

When you post the code for "DisplayPreferenceView", use "Paste and Match Style", to avoid all the extra blank lines.

—
robnotyou

Add a Comment

Answer 6

There is are no extra lines in the actual app code. it is just happening here. please tell what wrong and avoid the blank lines

Posted by

eshansingh

I just told you that, twice. Use "Paste and Match Style".

—
robnotyou
in what ?

—
eshansingh
Use the “Paste and Match Style” (⌥⇧⌘V) command in the Edit menu in Safari. Don’t use the regular Paste (⌘V) command.

—
Scott J

Add a Comment

Answer 7

This is what I've got, so far.

Posted by

robnotyou

my app is still crashing

—
eshansingh

Add a Comment

Answer 8

yes this is what I was also expecting but mine keeps crashing.

Posted by

eshansingh

still not working

—
eshansingh

Add a Comment

Answer 9

ataCorrupted(Swift.DecodingError.Context(codingPath: [], debugDescription: "The given data was not valid JSON.", underlyingError: Optional(Error Domain=NSCocoaErrorDomain Code=3840 "Invalid value around line 1, column 0." UserInfo={NSDebugDescription=Invalid value around line 1, column 0., NSJSONSerializationErrorIndex=0})))

dyld4 config: DYLD_ROOT_PATH=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot DYLD_LIBRARY_PATH=/Users/eshansingh/Library/Developer/Xcode/DerivedData/EmployeeManagement-bfquzjwgjywziwfrfyygkodtlgop/Build/Products/Debug-iphonesimulator:/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/introspection DYLD_INSERT_LIBRARIES=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libBacktraceRecording.dylib:/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libMainThreadChecker.dylib:/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/Developer/Library/PrivateFrameworks/DTDDISupport.framework/libViewDebuggerSupport.dylib DYLD_FRAMEWORK_PATH=/Users/eshansingh/Library/Developer/Xcode/DerivedData/EmployeeManagement-bfquzjwgjywziwfrfyygkodtlgop/Build/Products/Debug-iphonesimulator

CoreSimulator 783.5 - Device: iPhone 11 (118C63BF-B908-4454-8870-FC609C41BA8D) - Runtime: iOS 15.2 (19C51) - DeviceType: iPhone 11

(lldb)

Posted by

eshansingh

Add a Comment

Answer 10

I am not saying that your code will magically start working!

I am saying that using the code that you have posted, I am able to make a working app.

Posted by

robnotyou

Try uploading your actual json data file...

—
robnotyou

Add a Comment

Answer 11

that's my actual json file in the question

Posted by

eshansingh

That might be the data from the file, but it is not the actual file. You could upload it here, as an attachment.

—
robnotyou
not able to .

—
eshansingh

Add a Comment

Answer 12

JSON file.png

Can you share the equivalent of this screenshot, to check the details of the json file?

Posted by

robnotyou

it exactly the same. due to some reason I dunno I am not able to post here any more. not able to upload neither attachments nor screen shots

—
eshansingh
It is not exactly the same, unless your name is also "Rob", and you stored the json file in the exact same place as me? Try uploading again, in a few minutes.

—
robnotyou

Add a Comment

Answer 13

Is it possible to upload the json data file, like this?

data.json

Posted by

robnotyou

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Answer 14

it is not allowing me to post any code or attachments . i created the json file inside the project so the path should not be a problem?

Posted by

eshansingh

Add a Comment

Answer 15

The error message "Invalid value around line 1, column 0." is consistent with having invalid bytes at the very start of the file. Maybe there are some non-printing (invisible) characters there for some reason? (I initially thought byte order mark, but that seems to work fine.) Try examining the file directly via this command:

$ hexdump -C <path-to-your-JSON-file> | head -1

The expected output is exactly this:

00000000  5b 7b 0a 20 20 20 20 22  4e 61 6d 65 22 3a 22 49  |[{.    "Name":"I|

If the first character isn’t the opening square bracket, that’s bad. Let us know what it shows.

Posted by

Scott J

This is a good tip. I get the exact same output as Scott J.

—
robnotyou
And if the original file does have invisible content, it could get lost when pasting the text into this forum, resulting in nobody else being able to reproduce the problem.

—
Scott J
I don’t guys but now without any changes the project has magically started working again.

—
eshansingh

JSON DATA CORRUPTED ERROR

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