How to Extract JSON Data from a Request Body in Go?

Getting the JSON from the Request Body in Go

Problem:

Capturing the raw JSON body of a POST request as a string or interface to store in a JSONB database field.

Solution:

1. Retrieve the Request Body:

<code class="go">bodyBytes, _ := ioutil.ReadAll(context.Request().Body)</code>

2. Restore the Request Body:

Since the http.Response.Body is a buffer that cannot be read multiple times, restore it before any further processing:

<code class="go">context.Request().Body = ioutil.NopCloser(bytes.NewBuffer(bodyBytes))</code>

3. Decode the JSON:

Now, you can use the body bytes to decode the JSON into a string or interface:

<code class="go">var rawJSON string
if err := json.Unmarshal(bodyBytes, &rawJSON); err != nil {
    // Handle error
}</code>

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