Java将字符串解析为日期返回错误的日期 [英] Java parsing String to a Date returns incorrect Date

问题描述

我将2种Java日期类型存储为MySQL数据库表的日期和时间.我正在使用SimepleDateFormat("YYYY-MM-dd")将日期存储在数据库中，当我选择它时它显示为正确的日期.但是，当我尝试将其解析回util.Date并创建新的事件对象时，它显示为30/12/2012而不是数据库中的31/05/2013.解析为util.Date并格式化后的时间可以正确打印.我不确定日期为什么打印错误的日期，但是时间却打印正确的时间.

I am storing my 2 Java date types as Date and Time for a MySQL database table. I am using the SimepleDateFormat("YYYY-MM-dd") to store the date in my database and it shows up as the correct date when i go to select it. However when i try to parse it back into a util.Date and create a new Event Object, it shows up as 30/12/2012 instead of 31/05/2013 as it is in the database. The time, when parsed into a util.Date and formatted prints out correctly. I am not sure why the Date is printing the wrong date, but the time is printing the correct time.

数据库

+--------+--------------+-----------+
+ EVENT1 +  2013-05-31  +  02:30:00 +
+--------+--------------+-----------+
+ EVENT2 +  2013-05-31  +  01:00:00 +
+--------+--------------+-----------+

打印:

Event1
30/12/2012
02:30
Event2
30/12/2012
01:00

推荐答案

应为yyyy-MM-dd，且小写字母Ys.请参阅此处以了解大写字母Y的含义...

It should be yyyy-MM-dd with lower case Ys. See here for what the capital Y means...

Y返回2012，而y返回2011的SimpleDateFormat

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