Reading from JSON file in Swift - json

Question

I'm trying to read a JSON file but I keep getting an error when I try to read the "ParsedText". First I convert the serialized JSON data to a dictionary of type [String: Any] and then I try to read the dictionary["ParsedResults"] value and convert that to a dictionary of type [String: Any] but it always fails.
Here is the JSON file:
{
ErrorDetails = "<null>";
ErrorMessage = "<null>";
IsErroredOnProcessing = 0;
OCRExitCode = 1;
ParsedResults = ( {
ErrorDetails = "";
ErrorMessage = "";
FileParseExitCode = 1;
ParsedText = "Sample text";
TextOverlay = {
HasOverlay = 0;
Lines = ( );
Message = "Text overlay is not provided as it is not requested";
};
} );
ProcessingTimeInMilliseconds = 869;
SearchablePDFURL = "Searchable PDF not generated as it was not requested.";
}
Here is part of the swift function:
do {
//create json object from data
let dictionary = try JSONSerialization.jsonObject(with: data!, options: JSONSerialization.ReadingOptions.allowFragments) as! [String: Any]
for (key, value) in dictionary {
print("KEY: \(key)")
print("VALUE: \(value)")
}
let parsedResults = dictionary["ParsedResults"] as! [String: Any]
print("parsedResults: \(parsedResults)")
} catch let error {
print("ERROR: Could not serialize jSON Data: \(error.localizedDescription)")
}
}

Answer 1

As already commented, your said-to-be JSON file is not in JSON format.
It seems to be in a classic text-based plist format. If you do want to read the file as is, you can use PropertyListSerialization:
import Foundation
let data = """
{
ErrorDetails = "<null>";
ErrorMessage = "<null>";
IsErroredOnProcessing = 0;
OCRExitCode = 1;
ParsedResults = ( {
ErrorDetails = "";
ErrorMessage = "";
FileParseExitCode = 1;
ParsedText = "Sample text";
TextOverlay = {
HasOverlay = 0;
Lines = ( );
Message = "Text overlay is not provided as it is not requested";
};
} );
ProcessingTimeInMilliseconds = 869;
SearchablePDFURL = "Searchable PDF not generated as it was not requested.";
}
""".data(using: .utf8)
do {
//create property list object from data
let dictionary = try PropertyListSerialization.propertyList(from: data!, options: [], format: nil) as! [String: Any]
for (key, value) in dictionary {
print("KEY: \(key)")
print("VALUE: \(value)")
}
let parsedResults = dictionary["ParsedResults"] as! [[String: Any]] //<- See Larme's comment.
print("parsedResults: \(parsedResults)")
} catch let error {
print("ERROR: Could not deserialize plist Data: \(error.localizedDescription)")
}
But I recommend you to check the part generating such files, and fix it to generate a valid JSON file.