[jira] Commented: (WW-3119) Stringlength validation problem for utf-8 chars (Struts 2.1.6)

["weiliang_98@yahoo.com (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/WW-3119?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12879554#action_12879554 ] 

weiliang_98@yahoo.com commented on WW-3119:
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sorry. is this qunhuan mei from nan jing, china?

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> Stringlength validation problem for utf-8 chars (Struts 2.1.6)
> --------------------------------------------------------------
>
>                 Key: WW-3119
>                 URL: https://issues.apache.org/jira/browse/WW-3119
>             Project: Struts 2
>          Issue Type: Bug
>          Components: Core Interceptors
>    Affects Versions: 2.1.6
>         Environment: Win XP, Eclipes, Tomcat
>            Reporter: Qunhuan Mei
>            Assignee: Wes Wannemacher
>            Priority: Critical
>             Fix For: 2.1.8
>
>
> When I try to validate utf-8 chars such as Chinese using Struts 2.1.6, the stringlength validation appears to have problem. It seems the validation process is not using the number of Chinese chars before encoding, but rather the number of chars after encoding. The following are the steps to reproduce the problem:
> 1.	Create a project by importing struts2-blank-2.1.6.war from ...\struts-2.1.6\apps" 
> and make the login.jsp work with Login.java, e.g. print out the username.length() in setUsername(...) function.
> 2.	copy the following stringlength validation code into Login-validation.xml:
> <field-validator type="stringlength">
>         	<param name="maxLength">4</param>
>         	<param name="trim">true</param>
>         	<message key="fieldNameShouldBeWithinMaxLength"/>        	
> </field-validator>
> 3.	copy the following stringlength error message into package.properties:
> fieldNameShouldBeWithinMaxLength=The max number of chars of ${getText(fieldName)} is ${getText(maxLength)}
> 4.	run the login.jsp and type in either "abcd" and "abcde" into username, we can see that "abcd" does not incur a validation message whereas "abcde" does.
> 5.	now typing 2 Chinese chars, say "世界"into the user name, which should not have any problem since only 2 chars. However the struts reports the chars received are more than 4. As a matter of fact, the print out statement in setUsername(...) reports the number of chars is 6.
> Qunhuan Mei
> BTW: is there any way to access the validation code from struts 2.1.7 (this bug may have been fixed by the 2.1.7 code)? Thanks.

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