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Utility Method for Extracting JSON from Mixed-Content Strings #2772

Description

@Mohit1r

Problem solved by the feature

The requested feature addresses the common scenario where JSON data is embedded within non-JSON text, such as log messages, API responses, or concatenated strings. Currently, developers must write custom parsing logic to extract this JSON data, which can lead to code duplication and increased complexity. This method would streamline the process, allowing developers to easily extract JSON fragments and work with them without additional overhead.

Feature description

The proposed feature is a utility method named extractJsonFromString(String input, String startToken, String endToken). This method will locate and extract JSON content from a larger string based on specified delimiters (e.g., { and }). It will handle nested JSON structures and provide error handling for malformed or missing JSON data. By simplifying the extraction process, this feature will enhance the usability of Gson for applications dealing with mixed-content strings.

Alternatives / workarounds

Currently, developers often resort to using regular expressions or manual string manipulation to extract JSON from embedded text. These methods can be error-prone, especially when dealing with nested structures or varying formats. Some may use third-party libraries for JSON parsing or custom utility methods, but these approaches add unnecessary dependencies and complexity. The proposed method would offer a standardized solution within the Gson library, reducing the need for such workarounds.

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