Java escape JSON String?

Question

I have the following JSON string that i am sending to a NodeJS server:

String string = \"{\\\"id\\\":\\\"\" + userID + \"\\\",\\\"type\\\":\\\"\" + methoden          


        

Answer 1

The JSON specification at https://www.json.org/ is very simple by design. Escaping characters in JSON strings is not hard. This code works for me:

private String escape(String raw) {
    String escaped = raw;
    escaped = escaped.replace("\\", "\\\\");
    escaped = escaped.replace("\"", "\\\"");
    escaped = escaped.replace("\b", "\\b");
    escaped = escaped.replace("\f", "\\f");
    escaped = escaped.replace("\n", "\\n");
    escaped = escaped.replace("\r", "\\r");
    escaped = escaped.replace("\t", "\\t");
    // TODO: escape other non-printing characters using uXXXX notation
    return escaped;
}