How to Convert YAML to JSON with Dynamic Data Structures in Go?

Converting YAML to JSON Without Explicit Structs

One challenge in converting YAML to JSON arises when the data structure is dynamic, making it unsuitable for mapping to a predefined struct. This error occurs when attempting to marshal an interface{} type that contains maps of the form map[interface{}]interface{}.

To circumvent this issue, a recursive conversion function is required to transform these dynamic maps into their corresponding JSON-compatible counterparts, map[string]interface{}. Additionally, slices within the data structure should also be traversed and converted.

Recursive Conversion Function

The following convert() function serves this purpose, recursively converting all encountered map[interface{}]interface{} and []interface{} values:

Example Usage

In the provided example, the input YAML data is first unmarshaled into an interface{} variable:

The convert() function is then applied to the body variable, converting all dynamic maps to map[string]interface{}:

Finally, the converted body is marshaled into a JSON string:

Output

The output JSON string accurately represents the input YAML data, despite the lack of explicit mapping to structs:

Note

It's important to be aware that the order of elements in the JSON output may differ from that in the input YAML due to the unordered nature of Go maps. In cases where preserving element order is crucial, consider using an ordered data structure such as a slice of structs.

The above is the detailed content of How to Convert YAML to JSON with Dynamic Data Structures in Go?. For more information, please follow other related articles on the PHP Chinese website!