大约有 40,000 项符合查询结果（耗时：0.0523秒） [XML]
Getting parts of a URL (Regex)
...already accepts 0 or more, the ? part (0 or 1) is confusing it. I fixed it by changing (.*)? to (.+)?. You could also just remove the ?
– rossipedia
Oct 25 '10 at 22:23
3
...
ViewParam vs @ManagedProperty(value = “#{param.id}”)
... if you want the view parameters to survive any validation failures caused by forms enclosed in the view, otherwise you need to manually retain all request parameters for the subsequent requests by <f:param> in the command components.
Example:
<f:metadata>
<f:viewParam id="user_...
What's an appropriate HTTP status code to return by a REST API service for a validation failure?
...e that HTTP 422 has not made it into HTTP 1.1, RFC-7231.
Richardson and Ruby's RESTful Web Services contains a very helpful appendix on when to use the various HTTP response codes. They say:
400 (“Bad Request”)
Importance: High.
This is the generic client-side error status, used when n...
Git Clone: Just the files, please?
... git command that would be the closest from what you are looking for would by git archive.
See backing up project which uses git: it will include in an archive all files (including submodules if you are using the git-archive-all script)
You can then use that archive anywhere, giving you back only f...
Why do Java webapps use .do extension? Where did it come from?
...
To my knowledge, this convention has been spread by Struts1. The user guide puts it like this:
5.4.2 Configure the ActionServlet Mapping
Note: The material in this section is not specific to Struts. The
configuration of servlet mappings is
defined in the Java ...
Identity increment is jumping in SQL Server database
... behaviour due to a performance improvement since SQL Server 2012.
It now by default uses a cache size of 1,000 when allocating IDENTITY values for an int column and restarting the service can "lose" unused values (The cache size is 10,000 for bigint/numeric).
This is mentioned in the documentati...
Difference between string object and string literal [duplicate]
...nswered Jul 21 '10 at 9:30
Mark ByersMark Byers
683k155155 gold badges14681468 silver badges13881388 bronze badges
...
Hibernate SessionFactory vs. JPA EntityManagerFactory
...
Prefer EntityManagerFactory and EntityManager. They are defined by the JPA standard.
SessionFactory and Session are hibernate-specific. The EntityManager invokes the hibernate session under the hood. And if you need some specific features that are not available in the EntityManager, you ...
What does a just-in-time (JIT) compiler do?
...compiler runs after the program has started and compiles the code (usually bytecode or some kind of VM instructions) on the fly (or just-in-time, as it's called) into a form that's usually faster, typically the host CPU's native instruction set. A JIT has access to dynamic runtime information wherea...
Maven Install on Mac OS X
I'm trying to install maven through the terminal by following these instructions .
24 Answers
...