Tool Introduction
This tool is an efficient online JSON to FLOW class converter, designed to help developers quickly and accurately transform complex JSON data structures into clear, standardized FLOW class code. It automates the data model creation process, greatly simplifying development work for API data parsing, data binding, ORM mapping, or building domain-specific models. Through simple configuration, you can flexibly define the root class name and property naming style to adapt to the coding conventions of different projects or languages, significantly improving development efficiency and code quality.
How to Use
- Open the JSON to FLOW Class tool page.
- Paste the JSON data to be converted into the "Input JSON" text box on the left.
- In the "Configuration Options" area on the right, you can set:
- Root Class Name: Specify a name for the generated top-level FLOW class (e.g.,
RootData or Response).
- Property Naming Style: Choose the naming convention for properties, such as
camelCase or snake_case.
- Click the "Convert" button.
- The generated FLOW class code will be displayed in the "Output FLOW Class" area on the right, which you can directly copy and use.
Input Parameter Requirements
The input must be a standard JSON string, which can be a JSON object {} or a JSON array [] as the root node. Please ensure the validity of the JSON format; invalid JSON will lead to conversion failure.
Output Result Format
The output result is code text conforming to FLOW class specifications. Each JSON object will be converted into an independent class definition, and its internal properties will be automatically generated based on JSON fields. Nested JSON objects will generate nested classes, and JSON arrays will be converted into corresponding class lists (e.g., List<String> or List<MyClass>).
Usage Example
Example Input Data
{
"errorCode": 0,
"message": "Success",
"data": {
"userId": 12345,
"userName": "JohnDoe",
"orders": [
{
"orderId": "A1001",
"amount": 99.50,
"status": "completed"
},
{
"orderId": "B2002",
"amount": 120.00,
"status": "pending"
}
]
}
}
Configuration Information
- Root Class Name:
ApiResponse
- Property Naming Style:
camelCase
Expected Output Result (FLOW Class Code)
class ApiResponse {
int errorCode;
String message;
Data data;
}
class Data {
int userId;
String userName;
List<Order> orders;
}
class Order {
String orderId;
double amount;
String status;
}
Specific operation demonstration: Users only need to paste the above JSON into the input box, set the root class name to ApiResponse, the property naming style to camelCase, and click the convert button to see the FLOW class code structure as shown above in the output box.
Frequently Asked Questions
- Q: What is a "FLOW class"? A: In this tool, "FLOW class" broadly refers to a programming language class definition automatically generated based on JSON data structures, used for data mapping and object modeling. It simplifies the conversion process from JSON to strong-typed data models and is widely used in various development scenarios such as API clients, data persistence, and front-end data binding.
- Q: What JSON formats are supported as input? A: This tool supports any valid JSON string conforming to JSON specifications, whether it's a single JSON object (
{}) or a JSON array ([]) as the root node. Please ensure the validity of the JSON format, otherwise, conversion may fail.
- Q: What languages or frameworks does the output FLOW class code support? A: The FLOW class code generated by this tool provides a generic structure that can serve as the basic skeleton for data models in various object-oriented languages (such as Java, C#, Dart, Kotlin, TypeScript, etc.). Users can fine-tune it according to actual needs to adapt to the syntax specifications of specific languages or frameworks.
- Q: How does the tool handle nested JSON objects and JSON arrays? A: The tool automatically identifies nested JSON objects and generates independent internal classes for them, while converting JSON arrays into corresponding
List<Type> structures (where Type can be a primitive type or a generated internal class).
- Q: Can the generated class names and property names be customized? A: Yes, you can customize the name of the root class. For property names, the tool provides multiple naming style options (e.g., camelCase, snake_case, etc.) to meet different coding conventions.
Uses of FLOW Classes
The FLOW classes generated by this tool have wide application value in software development, significantly improving development efficiency and code maintainability:
- API Data Mapping: Quickly map JSON data returned by external APIs to strong-typed objects in the application, simplifying data access and operations, and avoiding hardcoding field names.
- Data Model Definition: Serve as the core data model in projects, providing a unified and clear structure definition for front-end and back-end data interaction and data storage.
- Database ORM Assistance: Can be used as a basic model for Object-Relational Mapping (ORM), facilitating data persistence to or retrieval from databases, reducing the tediousness of manually creating entity classes.
- UI Data Binding: In front-end (such as Vue, React, Angular) or mobile application (such as Flutter, Android, iOS) development, used to bind JSON data to user interface components, achieving dynamic data display and interaction.
- Code Generation: Automate the generation of a large amount of repetitive data model code, reducing manual coding errors and improving development efficiency and consistency.
- Data Validation and Conversion: Provide a clear data structure, facilitating data validation, type conversion, and business logic processing, enhancing program robustness.
Notes
- Input JSON Validity: Please ensure that your input JSON string is valid. Invalid JSON will lead to conversion failure or unexpected results. It is recommended to use an online JSON validation tool for checking before input.
- Data Type Inference: The tool attempts to intelligently infer the data types of JSON fields (such as int, double, String, boolean, etc.). For mixed types, empty fields, or fields that cannot be clearly determined, it may default to generating a
String type or require manual adjustment by the user.
- Naming Conventions: Although the tool provides naming style options, for JSON field names with special characters or starting with numbers, the generated property names may be automatically corrected to comply with programming language conventions. Users are advised to check and fine-tune before use.
- Sensitive Information: Please do not enter JSON containing Personally Identifiable Information (PII) or other sensitive, confidential data into the tool to ensure data security. This tool processes data only on the client side and does not upload any data.
- Performance Considerations: For very large or extremely complex JSON structures, conversion may take a longer time and may consume more browser resources. It is recommended to process in batches or simplify the input.
