JSON to Swift Class

Tool Introduction

"JSON to Swift Class" is an efficient online tool designed to help Swift developers quickly convert JSON formatted data into Swift-compliant class (or struct) code. It can parse complex nested JSON structures and generate Swift data models that conform to the Codable protocol, greatly simplifying the manual writing of model code and significantly improving development efficiency and accuracy.

How to Use

1. In the "JSON String" input box, paste the JSON data you need to convert. Please ensure the pasted JSON data is correctly formatted and complete.
2. The tool will automatically parse and immediately generate the corresponding Swift class or struct code in the "Converted Class" output box.
3. You can directly copy the Swift code from the output box and paste it into your Xcode project for use.

Input Parameter Format: Must be a string conforming to standard JSON syntax, such as valid JSON data containing objects {} or arrays [].

Output Result Format: The generated Swift code is usually a struct (structure) or class (class), and by default supports the Codable protocol, facilitating data encoding and decoding.

Frequently Asked Questions

• Q: What JSON formats does this tool support?
• A: This tool supports all JSON strings conforming to the standard RFC 8259 specification, including combinations of objects, arrays, strings, numbers, booleans, and null, as well as nested structures.
• Q: Does the output Swift code support the Codable protocol?
• A: Yes, the Swift classes or structs generated by the tool will automatically add the Codable (or Decodable and Encodable) protocol by default, to facilitate JSON data serialization and deserialization.
• Q: How does it handle potentially missing fields in JSON?
• A: The tool intelligently identifies potentially missing fields in JSON and generates them as optional types in Swift code, such as String?, Int?, etc.
• Q: Does it support custom class names or property names?
• A: Currently, the tool automatically generates class names and property names based on the JSON root structure and key names. If you need to customize them, you can manually modify the code after generation.
• Q: Is there a limit to the size of the input JSON?
• A: Generally, the tool can handle large-scale JSON data, but extremely large JSON may affect conversion speed or cause browser performance degradation. It is recommended to process JSON below MB level.

Notes

• Please ensure that the "JSON String" you enter is in valid JSON format. Invalid JSON will lead to conversion failure or incorrect code generation.
• The generated Swift code defaults to a class name of Root or is inferred from the JSON root key name. Please modify the class name and property names according to your project requirements to make them more readable.
• For certain special scenarios, such as needing custom CodingKeys, or having more complex business logic, you may need to manually adjust and optimize the generated code.
• The tool aims to provide basic code models and does not include complex business logic or network request code.