What does the @Valid annotation indicate in Spring?
Aug 29, 2010 · IIRC @Valid isn't a Spring annotation but a JSR-303 annotation (which is the Bean Validation standard). What it does is it basically checks if the data that you send to the method …
How to check if a file is a valid image file? - Stack Overflow
But, file truncation cause always errors. End Update You can use Python Pillow (PIL) module, with most image formats, to check if a file is a valid and intact image file.
How can I validate an email address using a regular expression?
Over the years I have slowly developed a regular expression that validates most email addresses correctly, assuming they don't use an IP address as the server part. I use it in several PHP …
How can I check if a string is a valid number? - Stack Overflow
30 The JavaScript global isFinite() checks if a value is a valid (finite) number. See MDN for the difference between Number.isFinite () and global isFinite ().
What is a regular expression which will match a valid domain name ...
For example with your expr, 中国互联网络信息中心中国互联网络信息中心中国互联网络信.中国 checks as valid, but after IDN conversion, it's too many bytes per label. \p {L} matches …
regex - Validating IPv4 addresses with regexp - Stack Overflow
Following are the rules defining the valid combinations in each number of an IP address: Any one- or two-digit number. Any three-digit number beginning with 1. Any three-digit number …
java - "PKIX path building failed" and "unable to find valid ...
Jan 12, 2014 · sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target While some of the other answers are appropriate and …
How to check if a string is a valid DATE, TIME or DATETIME
I really hate that if you insert any invalid value into a date column in mysql via php you get a '0000-00-00'! It should either fail (preferred), leave it null, or set it to the declared default value …
How to check for a valid Base64 encoded string - Stack Overflow
Validates that the specified span of text is comprised of valid base-64 encoded data. true if base64Text contains a valid, decodable sequence of base-64 encoded data; otherwise, false. …
html - What characters are valid in a URL? - Stack Overflow
There's what's technically a valid URL and what's actually used as a URL today. Only 25% of the internet is even written in English. #2 and #4 languages are Chinese and Arabic.