如何将漂亮的json格式嵌入到html静态页面？

I have this code:

我有这个代码：

 public <T> String toJson(T item)
    {
        String json;
        ObjectWriter ow = new ObjectMapper().writer().withDefaultPrettyPrinter();
        try {
            json = ow.writeValueAsString(item);
        } catch (IOException e) {
            e.printStackTrace();
            json = "";
        }
        return json;
    }
 public <T> Strin