gson校验字符串是否是json

    public static boolean validate(String jsonStr) {
        JsonElement jsonElement;
        try {
            jsonElement = new JsonParser().parse(jsonStr);
        } catch (Exception e) {
            return false;
        }
        if (jsonElement == null) {
            return false;
        }
        if (!jsonElement.isJsonObject()) {
            return false;
        }
        return true;
    }

将URL参数转换为JSON
https://codingdict.com/questions/91704

public static String paramJson(String paramIn) {
    paramIn = paramIn.replaceAll("=", "\":\"");
    paramIn = paramIn.replaceAll("&", "\",\"");
    return "{\"" + paramIn + "\"}";
}