How can I return an encoded string in an http response body?

Question

Adding an encoded string to an http resonse seems to replace some characters with !F(MISSING). How that that be prevented?

Output:

{\"encodedText\":\"M6c8RqL61nM

Answer 1

You are using the escaped value "M6c8RqL61nMFy%2FhQmciSYrh9ZXgVFVjO " as a format string on this line:

fmt.Fprintf(w, string(response))

Fprintf attempts to format an argument for the verb "%2F". There is no argument, so Fprintf prints "%!F(MISSING)" for the verb.

The fix is to not use the output as a format string. Because you don't need any formatting when writing to the response, change the last line to:

w.Write(response)