java - 无法将日期从 mysql 检索到 JDBC

Question

我目前遇到的问题是我无法从我的mysql数据库检索日期对象，到目前为止，无论我尝试什么，我要么得到

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException

或

java.sql.SQLException: Value '0000-00-00' can not be represented as java.sql.Date

有谁知道如何解决这个问题。

我已经尝试过this和 this但我仍然遇到同样的两个错误，这两个错误都是由日期引起的

Answer 1

除了其他人的回答(包括存储无效日期不是一个好主意的非常好建议)之外，您还可以指示 JDBC 驱动程序以不同的方式处理这些无效日期:

来自:http://dev.mysql.com/doc/refman/5.5/en/connector-j-installing-upgrading.html

Connector/J 3.1 throws an exception by default when these values are encountered as this is the most correct behavior according to the JDBC and SQL standards. This behavior can be modified using the zeroDateTimeBehavior configuration property. The permissible values are:

-  exception (the default), which throws an SQLException with an SQLState of S1009.
-  convertToNull, which returns NULL instead of the date.
-  round, which rounds the date to the nearest closest value which is 0001-01-01.

我建议使用convertToNull

参见 here有关如何指定配置属性的说明。