json-lib 与 jackson toBean

//用 jackson 转化成bean
System.out.println(DateUtil.getNowTimeStr("yyyy-MM-dd HH:mm:ss.sss"));
ObjectMapper mapper = new ObjectMapper();
File file = new File("src\\bean.json");
for (int i = 0; i < 100000; i++) {
User user = mapper.readValue(file, User.class);
}
System.out.println(DateUtil.getNowTimeStr("yyyy-MM-dd HH:mm:ss.sss"));
//用 json-lib 转化成bean
System.out.println(DateUtil.getNowTimeStr("yyyy-MM-dd HH:mm:ss.sss"));
FileInputStream in = new FileInputStream(file);
byte[] buff = new byte[in.available()+1];
in.read(buff, 0, in.available());
String str = new String(buff);
for (int i = 0; i < 100000; i++) {
JSONObject jsonObject = JSONObject.fromObject(str);
User user = (User)JSONObject.toBean(jsonObject,User.class);
}
System.out.println(DateUtil.getNowTimeStr("yyyy-MM-dd HH:mm:ss.sss"));