JSONFixer4J 🛠️

A lightweight Java library for automatically correcting broken JSON strings. Whether you have mismatched brackets, missing commas, or incomplete literals, JSONFixer4J tries its best to fix them so you can keep on coding without interruptions! ⚙️

Features

• 🧩 Bracket Correction: Fixes unmatched { or }.
• 🎯 Comma Insertion: Inserts missing commas between keys/values.
• 🔤 String Completion: Completes unterminated strings.
• ⚡ Literal Recovery: Fixes partial boolean (true, false) or null (null) literals.

Quick Start

Installation

Add JSONFixer4J to your Gradle project:

repositories {
    mavenCentral()
    maven { url "https://jitpack.io" }
}

dependencies {
    // ...
    implementation 'com.github.DedInc:jsonfixer4j:b7a6d1109c'
}

Note: Above is an example of a build.gradle file. If JSONFixer4J is not yet available via JitPack, you might need to install it locally or reference it as a local library.

Usage

In your Java code, simply create an instance of JSONAutoCorrector and call autocorrect(...) with your broken JSON string.

package org.example;

import com.github.dedinc.jsonfixer4j.JSONAutoCorrector;

public class Main {
    public static void main(String[] args) {
        final JSONAutoCorrector corrector = new JSONAutoCorrector();

        String[] brokenCases = {
            "{\"key\": 123",                    // Missing closing brace
            "{{\"name\": \"Test\"}",            // Extra brace at the start
            "{\"arr\": [1, 2, 3}",              // Missing closing bracket for array
            "{\"key\": \"test\", \"star, ",     // Unfinished key
            "{\"key\": \"test\", \"new\": fals",// Incomplete boolean
            "{\"title\": \"Hello",              // Unterminated string
            "{\"key1\": 1, \"key2\": 2,",       // Trailing comma
            "{\"one\": 1 \"two\": 2}",          // Missing comma
            "{\"flag\": tr, \"value\": nul}"    // Partial literals
        };

        for (String broken : brokenCases) {
            String fixed = corrector.autocorrect(broken);
            System.out.println("Broken:  " + broken);
            System.out.println("Fixed:   " + fixed);
            System.out.println("----------------------");
        }
    }
}

This will attempt to fix each broken JSON string and print both the original and fixed versions in the console.

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Made with ❤️ and Java.