JSONArray riskInfos = info.getJSONArray("riskInfos");
for (int i = 0; i < riskInfos.size(); i++) {
net.sf.json.JSONObject jsonObject = riskInfos.getJSONObject(i);
Map<String, Object> insuerd = new HashMap<String, Object>();
insuerd.put("name", jsonObject.getString("prem"));
}