How to Prevent JSON Responses from Displaying ASCII Codes Instead of Characters?

How to Display Characters Instead of ASCII in JSON Responses

In this programming question, a user is experiencing an issue where JSON data containing an ampersand "&" is being displayed with its ASCII code "u0026" instead of the actual character.

Resolving the Issue:

The provided solution involves utilizing a feature introduced in Go1.7. By disabling HTML escaping in the JSON encoder, the ampersand character can be preserved as it is in the JSON data.

Implementation Using Encoder.DisableHTMLEscaping:

To disable HTML escaping, use the Encoder.DisableHTMLEscaping method. This method sets the EscapeHTML field of the encoder to false, effectively disabling the escaping of HTML characters.

encoder := json.NewEncoder(responseWriter)
encoder.SetEscapeHTML(false)

By modifying the code with this method, the HTTP server will now display the ampersand character without any ASCII conversion. Here is the modified version of the testFunc function:

func testFunc(w http.ResponseWriter, r *http.Request) {
    data := make(map[string]string)
    data["key"] = "&"

    encoder := json.NewEncoder(w)
    encoder.SetEscapeHTML(false)

    if err := encoder.Encode(data); err != nil {
        fmt.Fprintln(w, "Failed to generate JSON.")
    }
}

Now, both the browser and console will display the ampersand character as intended, without any ASCII conversion.

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