golang invalid character 'b' looking for beginning of value

Question

I am trying to post a json with xml message inside it. However it returns

invalid character \'b\' looking for beginning of value

I think the possible reason

Answer 1

The error indicates that the server did not return a valid JSON response. I suggest adding the following code to debug the issue:

err := json.Unmarshal(resBody, v)
if err != nil {
    log.Printf("error decoding sakura response: %v", err)
    if e, ok := err.(*json.SyntaxError); ok {
        log.Printf("syntax error at byte offset %d", e.Offset)
    }
    log.Printf("sakura response: %q", resBody)
    return err
}