jsonValidationWorkflowStack bug? --- Struts 2 Ajax validation Unicode messages
(e.g. for Japanese, Chinese) all displayed as "?"
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Key: WW-3032
URL: https://issues.apache.org/struts/browse/WW-3032
Project: Struts 2
Issue Type: Bug
Components: XML Validators
Affects Versions: 2.1.6
Environment: windows xp pro, eclipse 3.4.1, java 1.6.
Reporter: Qunhuan Mei
Priority: Critical
Hi,
I am reporting this problem hoping someone with more knowledge could confirm
whether it is a bug or just a setting issue.
I am going to use Struts-blank-2.1.6 with eclipse to demonstrate the problem
that when using Struts 2 Ajax validation procedure and all validation messages
in Unicode (e.g. for Japanese, Chinese) will be displayed as "?". Full steps
listed below:
1. Create a project by importing struts2-blank-2.1.6.war from
...\struts-2.1.6\apps"
2. Copy the form code from Login.jsp into Welcome.jsp, right before </body>
tag:
<s:form action="Login">
<s:textfield key="username" />
<s:password key="password" />
<s:submit/>
</s:form>
So that we could validation on username and password input fields on welcome
page.
At this point, build the project and run welcome.jsp "on the server", we can
see validation works fine (e.g. click submit without any input will receive
right error reporting page back). Here the validation messages are not utf-8
based.
3. Prepare some utf-8 encoded validation message using Google translator. Say
translate "register" into Japanese and Chinese. Then using command
"native2ascii -encoding utf-8" to turn these two internationalised message into
unicode, we get: \u767b\u9332 and \u6ce8\u518c
Simply copy the unicode message into the end of each line of project's
package.properties so that we can see whether these messages are displaced
correctly (within my eclipse, the packge.properties file are encoded in utf-8).
4. Build the project and run welcome.jsp again, we can see the Unicode message
are displayed correctly on page. Simply click submit without input anything, we
also see both Japanese and Chinese are displayed correctly (graphically
recognizable).
This indicates without using Ajax, the validation mechanism can handle Unicode
message correctly.
5. Turn the validation into using Ajax (either in dojo or prototype.js way, see
http://struts.apache.org/2.1.6/docs/ajax-validation.html):
I am using dojo way:
(1) Adding dojo taglib to line 3 of Welcome.jsp:
<%@ taglib prefix="sx" uri="/struts-dojo-tags" %>
(2) Adding <sx:head /> right after <head> to enable ajax validation on the page
(3) Replace <s:submit> with <sx:submit validate="true"
ajaxAfterValidation="true" showLoadingText="false"/>
(4) Adding do-jo jar file "struts2-dojo-plugin-2.1.6.jar" to the project's lib
(from "...\struts-2.1.6\lib") and refresh the project
(5) Adding following two lines to example.xml, right below <action
name="Login_*" method="{1}" class="example.Login">:
<interceptor-ref name="i18n"/>
<interceptor-ref name="jsonValidationWorkflowStack"/>
Rebuild the project and run welcome.jsp. Click submit without any input, we
can see all English error message are displayed correctly, but both Japanese
and Chinese characters are displayed as question marks ("?").
Replacing dojo approach with prototype one I get the same result.
(My working environment: windows xp pro, eclipse 3.4.1, java 1.6.)
I am suspecting somehow the jsonValidationWorkflowStack is not handling unicode
well under the circumstances.
Qunhuan Mei
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