java - 转换json格式时间乱码问题

Question

http://img.mukewang.com/58468...

private static String dateFormat;
private static SerializeConfig mapping = new SerializeConfig();
static {
    dateFormat = "yyyy-MM-dd HH:mm:ss";
    mapping.put(Date.class, new SimpleDateFormatSerializer(dateFormat));
}
String jsonString = JSONObject.toJSONString(deal,mapping,SerializerFeature.WriteDateUseDateFormat);

这个方法是把jsonString放入redis中，但有两个方法同时放一个redis中，这两个方法的deal实体类中的属性还不相同，其他代码都一样，不知道是不是这个问题，希望有大神给解释一下

Answer 1

It seems that the thread of SimpleDateFormat is not safe, and multi-thread concurrency will cause this

Answer 2

It doesn’t feel necessary to be so complicated, it’s very simple to use fastjson

        Map<String, Object> map = new HashMap<>();
        map.put("createTime", new Date());
        map.put("name", "simeon");
        String jstr = JSON.toJSONStringWithDateFormat(map, "yyyy-MM-dd HH:mm:ss");