关于spring事务异常捕获！ DataAccessException 和 Exception 的疑问

[dojax]

try
{
this.getOcsServices().del(p);
} catch (DataAccessException e)
{
XXXXXX
} catch(Exception e)
{
XXXXX
}
我在web层执行上述代码，系统是spring+hibernate结构 this.getOcsServices().del(p);为调用service层的事务，按spring文档的说法一般所有异常都会自动包装到DataAccessException 中，但是我却发现了一条SQLException异常却不在DataAccessException 中，需要我用catch(Exception e)才能捕获到。
不知各位大虾是否有相关的知识或者经验？ 望分享之，谢谢

[老紫竹]

什么异常呢？DataAccessException抓不住地。贴出来参考一下！

[dojax]

e: java.lang.Exception = {org.hibernate.exception.GenericJDBCException@b9d}
cause: java.lang.Throwable = {java.sql.SQLException@ba2}
delegate: org.hibernate.exception.NestableDelegate = {org.hibernate.exception.NestableDelegate@ba3}
detailMessage: java.lang.String = "could not execute update query"
sqle: java.sql.SQLException = {java.sql.SQLException@ba2}
SQLState: java.lang.String = "JZ0SJ"
cause: java.lang.Throwable = {java.sql.SQLException@ba2}
detailMessage: java.lang.String = "JZ0SJ: 没有在此数据库中发现元数据存取器信息。 请按 jConnect 文档中所述安装 所需的表。"


上面这是JBuilder的关于这个不被DataAccessException包装的异常信息， 就是很奇怪这个jdbc异常为什么不会被DataAccessException包装起来。

[yanransoft]

同样问此问题，顶一下~

[yanransoft]

Spring’s DAO frameworks do not throw technology-specific exceptions, such
as SQLException or HibernateException. Instead, all exceptions thrown are
subclasses of the technology-agnostic org.springframework.dao.DataAccess-
Exception. This enables your data access interfaces to throw Spring’s general
DataAccessException instead of implementation-specific exceptions that would
force other application layers to catch them and thus become coupled to a particular
persistence implementation. In fact, you can intermingle multiple persistence
technologies within the same application without your service objects even
knowing it.
Since DataAccessException is the root of all Spring DAO exceptions, there are
a couple of important things to know.

[printfabcd]

我想可能是因为，DataAccessException是运行时异常,是一个RuntimeException，所以可能他不会管，非运行时异常O(∩_∩)O~