原文:
使用JavaScriptSerializer进行序列化日期类型应该注意的问题
JavaScriptSerializer在序列化DateTime时，是用刻度来表示的，具体在Json体现为:\/Date(315547200000)\/ 用V进行一个闭包, 括号内为Date的刻度，刻度就是时间滴答滴答经过的毫秒数，刻度计算的赶止时间为：UTC 1970年1月1日午夜开始的，
注意该起止时间是UTC时间，看看以下程序:
Customer cs
=
new
Customer();
cs.BirthDay = new DateTime( 1980 , 1 , 1 , 12 , 0 , 0 );
cs.Name = " steven " ;
cs.Sex = true ;
JavaScriptSerializer js = new JavaScriptSerializer();
string output = js.Serialize(cs);
Customer cust = js.Deserialize(output, typeof (Customer)) as Customer;
if (cust != null )
{
txtBirthDay.Text = cust.BirthDay.Value.ToString();
}
cs.BirthDay = new DateTime( 1980 , 1 , 1 , 12 , 0 , 0 );
cs.Name = " steven " ;
cs.Sex = true ;
JavaScriptSerializer js = new JavaScriptSerializer();
string output = js.Serialize(cs);
Customer cust = js.Deserialize(output, typeof (Customer)) as Customer;
if (cust != null )
{
txtBirthDay.Text = cust.BirthDay.Value.ToString();
}
这样处理时会带来一点问题就是，在进行序列化之后的日期不会是原来的 1980-1-1 12:00:00，而是会根据utc时间得来的一个时间，有可能是1979-12-31 4:00:00，这样在界面进行UI展示的时候会带来一致的问题!
其它处理很简单，序列化之前先把本地时间转换来UTC时间，再在反序列之后，把UTC时间转换为本地时间就OK了，看看更改之后代码:
Customer cs
=
new
Customer();
cs.BirthDay = new DateTime( 1980 , 1 , 1 , 12 , 0 , 0 ).ToUniversalTime();
cs.Name = " steven " ;
cs.Sex = true ;
JavaScriptSerializer js = new JavaScriptSerializer();
string output = js.Serialize(cs);
Customer cust = js.Deserialize(output, typeof (Customer)) as Customer;
if (cust != null )
{
txtBirthDay.Text = cust.BirthDay.Value.ToLocalTime().ToString();
}
cs.BirthDay = new DateTime( 1980 , 1 , 1 , 12 , 0 , 0 ).ToUniversalTime();
cs.Name = " steven " ;
cs.Sex = true ;
JavaScriptSerializer js = new JavaScriptSerializer();
string output = js.Serialize(cs);
Customer cust = js.Deserialize(output, typeof (Customer)) as Customer;
if (cust != null )
{
txtBirthDay.Text = cust.BirthDay.Value.ToLocalTime().ToString();
}
好了，到此为此吧!
