import com.alibaba.fastjson.JSON;        String strjson = request.getParameter("param");        //url-json的转码解码        String urlJson = URLEncoder.encode(strjson, "UTF-8");         String strJson = URLDecoder.decode(urlJson, "UTF-8");        //fastjson的转码解码        Map<String, Object> paramlist = (Map<String, Object>) JSON.parse(strjson);        String jsonStr = JSON.toJSONString(paramlist);                //string和数组的转换，用,分割        String ipArray [] = {"192.168.1.16","192.168.1.17","192.168.1.18"} ;        String str = StringUtils.join(ipArray, ",");        String [] strArr= str.split(",");