String dataId = "0000000000003000-0001";
        String baisc= " { "
                + "     \"SIZE\":\"0\","
                + "   \"UPDATE\":\"2014-12-01 23:01:23.98765\","
                + "    \"ERR\":\"ssss\""
                + " }";
//        JSONObject obj = JSONObject.fromObject(baisc);
//        System.out.println(obj.toString());
        
        JSONObject returnStr=new JSONObject();
        returnStr.put("DATAID", dataId);
        JSONObject bas = new JSONObject();
        bas.put("SIZE", "1");
     bas.put(
"UPDATE", new SimpleDataFormat("yyyy-MM-dd HH:mm:ss.SSS"));//当前时间
     bas.put("ERR", "");
    
//如果直接放入baisc参数,得到的是错误的json字符串
     returnStr.put("BAISC", bas);
     System.out.println(returnStr.toString());

 

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