Gson - Automatic quote (") escaping?

Maybe I'm not understanding your question, but I was able to get GSON to handle Strings with quotes without any settings or changes.

import com.google.gson.Gson;

public class GSONTest {

    public String value;

    public static void main(String[] args) {
        Gson g = new Gson();
        GSONTest gt = new GSONTest();
        gt.value = "This is a \"test\" of quoted strings";
        System.out.println("String: " + gt.value);
        System.out.println("JSON: " + g.toJson(gt));
    }
}

Output:

String: This is a "test" of quoted strings
JSON: {"value":"This is a \"test\" of quoted strings"}

Maybe I don't understand what you're asking?

Try using setPrettyPrinting with DisableHtml escaping.

import com.google.gson.Gson; 

Gson gson = new GsonBuilder().setPrettyPrinting().disableHtmlEscaping().create();
 JsonParser jp = new JsonParser();
 JsonElement je = jp.parse(jsonArray.toString());
 System.out.println( gson.toJson(je));

That is what I did to solve that

private final Gson mGson;
{
    GsonBuilder builder = new GsonBuilder();
    builder.registerTypeAdapter(String.class, new EscapeStringSerializer());
    mGson = builder.create();
}

private static class EscapeStringSerializer implements JsonSerializer<String> {
    @Override
    public JsonElement serialize(String s, Type type, JsonSerializationContext jsonSerializationContext) {
        return new JsonPrimitive(escapeJS(s));
    }

    public static String escapeJS(String string) {
        String escapes[][] = new String[][]{
                {"\\", "\\\\"},
                {"\"", "\\\""},
                {"\n", "\\n"},
                {"\r", "\\r"},
                {"\b", "\\b"},
                {"\f", "\\f"},
                {"\t", "\\t"}
        };
        for (String[] esc : escapes) {
            string = string.replace(esc[0], esc[1]);
        }
        return string;
    }
}