java提供link

JSONObject jsonObject = new JSONObject();
                    jsonObject.put("type", 1);
                    resp.setlink(new link(5, surveyId, "COLLECT_PAGE", jsonObject.toJSONString()));

public link(Integer type, String id, String url, String params) {
        this.type = type;
        this.id = id;
        this.url = url;
        this.isClear = isClear;
        this.params = params;
    }

处理这种请求link的

 "link":{
        "id":null,
        "isClear":false,
        "params":"{"type":1}",
        "type":5,
        "url":"COLLECT_PAGE"
    }

所以前端这种json格式，Java处理可以
JSonObject 对象用来解决

"{"type":1}"

JSONObject jsonObject = new JSONObject();
                    jsonObject.put("type", 1);

还有这样可以去接受前端传来json 但只给了你String

List categoryList = JSONObject.parseArray(categoryInfo, KeyValueData.class);