How to use spring:message tag as labels in java web application

[Yogesh Bali]

Hi..

Please guide me from start on how to use the spring message tag.. if i want to use it in my application to make it internationalized.
That would be a great help to me.

Thanks and Regards,
Yogesh

[Christophe Verré]

First you need to declare your message bundle :

  <bean id="messageSource"
        class="org.springframework.context.support.ResourceBundleMessageSource">
    <property name="basename" value="messages"/>
  </bean>

Here, the file called messages.properties (or any other international bundle, like messages_en_GB.properties) should be in the classpath. It should hold your messages. For example:

greeting=hi!

Then using the message tag :

<%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %>

<spring:message code="greeting" />

[Yogesh Bali]

first of all, thanks Christophe for the help. But the job is still not done. What i did is as follows :

Step 1: i first created a xml file with the name applicationContext.xml in the resources folder

  <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
 <bean id="messageSource"  
        class="org.springframework.context.support.ResourceBundleMessageSource">  
    <property name="basename" value="messages"/>  
  </bean>
 </beans>   

Step 2 : i created a file messages.properties in the same resources folder

 name = Name   

Step 3 : i included the following jar files in the lib folder :
commons--logging-1.1.1.jar and spring.jar
Step 4 : i did the following changes in the web.xml file :

 <?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

    <listener>
        <listener-class>
            org.springframework.web.context.ContextLoaderListener
        </listener-class>
    </listener>

    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/resources/applicationContext.xml</param-value>
    </context-param>

    <jsp-config>
    <taglib>
      <taglib-uri>/spring</taglib-uri>
      <taglib-location>/WEB-INF/resources/spring-form.tld</taglib-location>
    </taglib>
  	</jsp-config>
  
	<display-name>Signup</display-name>
		
	<welcome-file-list>
		<welcome-file>index.html</welcome-file>
		<welcome-file>index.htm</welcome-file>
		<welcome-file>index.jsp</welcome-file>
		<welcome-file>default.html</welcome-file>
		<welcome-file>default.htm</welcome-file>
		<welcome-file>default.jsp</welcome-file>
	</welcome-file-list>
</web-app>
   

Step 5 : i made a jsp, included the following two tags in it

<%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %>   

and

 <spring:message code="name" />    

And on execution of this application on Eclipse IDE, i receive the following exception

 Apr 2, 2010 10:05:23 PM org.springframework.context.support.ResourceBundleMessageSource getResourceBundle
WARNING: ResourceBundle [messages] not found for MessageSource: Can't find bundle for base name messages, locale en_US
Apr 2, 2010 10:05:23 PM org.springframework.web.servlet.tags.RequestContextAwareTag doStartTag
SEVERE: No message found under code 'name' for locale 'en_US'.
javax.servlet.jsp.JspTagException: No message found under code 'name' for locale 'en_US'.
	at org.springframework.web.servlet.tags.MessageTag.doStartTagInternal(MessageTag.java:184)
	at org.springframework.web.servlet.tags.RequestContextAwareTag.doStartTag(RequestContextAwareTag.java:77)
	at org.apache.jsp.dataForm_jsp._jspx_meth_spring_005fmessage_005f0(dataForm_jsp.java:179)
	at org.apache.jsp.dataForm_jsp._jspService(dataForm_jsp.java:87)
	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
	at java.lang.Thread.run(Unknown Source)
Apr 2, 2010 10:05:23 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet jsp threw exception
  

Please help, i am unable to move ahead from this point in my application.

[Yogesh Bali]

Thank you so much Christophe Verré, my application is running fine.. all the labels are getting values from messages.properties file... The mistake what i was doing was that i was not including the messages.properties file to the classpath... and now when i added it to the build, its working fine. Thanks and its a great concept to make the application internationalized..

[Abhay Agarwal]

hi yogesh

i am getting same error.
please tell me where you have placed message.properties in your build.

thanks
abhay

[pradeep gamage]

put message.properties file in to your class path then this error will be solve

[Shahid Ansari]

pradeep gamage wrote:put message.properties file in to your class path then this error will be solve

Hi, what do you mean by class path here ?
My message.properties is inside /WEB-INF and is as follows:

userName.required = User Name is required
password.required = Password is required
firstName.required = First name is required

But when I leave the first name empty while submitting I get the following error:

 No message found under code 'firstName.required.reg.firstName' for locale 'en_US'

reg is my commandName in the JSP form page.

Can someone please help me in this...