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 …
Which characters make a URL invalid? - Stack Overflow
Oct 10, 2009 · 12 All valid characters that can be used in a URI (a URL is a type of URI) are defined in RFC 3986. All other characters can be used in a URL provided that they are "URL …
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 …
Valid characters of a hostname? - Stack Overflow
Checkout this wiki, specifically the section Restrictions on valid host names Hostnames are composed of series of labels concatenated with dots, as are all domain names. For example, …
java - Unable to find valid certification path to requested target ...
Feb 9, 2012 · I have a Java client trying to access a server with a self-signed certificate. When I try to Post to the server, I get the following error: unable to find valid certification path to …
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 …
What characters are allowed in an email address? - Stack Overflow
Jan 12, 2010 · The changes in this spec essentially added international characters as valid alphanumeric characters (atext) without affecting the rules on allowed & restricted special …
sql - What are valid table names in SQLite? - Stack Overflow
What are the combination of characters for a table name in SQLite to be valid? Are all combinations of alphanumerics (A-Z, a-z and 0-9) constitute a valid name?
python - What is the difference between 'SAME' and 'VALID' …
Jun 7, 2016 · The valid padding involves no zero padding, so it covers only the valid input, not including artificially generated zeros. The length of output is ( (the length of input) - (k-1)) for …
How do I check if a string is valid JSON in Python?
In Python, is there a way to check if a string is valid JSON before trying to parse it? For example working with things like the Facebook Graph API, sometimes it returns JSON, sometimes it could