I have configure my properties file,but when run,it raise error and say can't find message key,my files are follows: /*index.jsp*/ <%@ taglib uri="http://struts.apache.org/tags-html" prefix="html" %> <html:form method="post" action="log"> ...... <html:errors property="logstime"/> </html:form>
/*application.properties*/ error.header=<ul> error.footer=</ul> error.stime.required=This is a test /*LogmanageForm.java*/ ...... public ActionErrors validate(ActionMapping mapping,HttpServletRequest request) { ActionErrors errors = new ActionErrors(); ...... errors.add("logstime",new ActionError("error.stime.required")); return errors; } /*web.xml*/ <?xml version="1.0" encoding="ISO-8859-1"?> <!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN" "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd"> <web-app> <!-- Action Servlet Configuration --> <servlet> <servlet-name>action</servlet-name> <servlet-class>org.apache.struts.action.ActionServlet</servlet-class> <init-param> <param-name>application</param-name> <param-value>resources.application</param-value> </init-param> ...... /*struts-config.xml*/ <?xml version="1.0" encoding="ISO-8859-1" ?> <!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.0//EN" "http://jakarta.apache.org/struts/dtds/struts-config_1_0.dtd"> <struts-config> <form-beans> <form-bean name="logmanageForm" type="com.LogmanageForm"/> </form-beans> <action-mappings> <action path="/log" type="com.LogmanageAction" name="logmanageForm" validate="true" input="/index.jsp"> <forward name="show" path="/show.jsp"/> </action> </action-mappings> </struts-config> application.properties is locate follow directory: C:\tomcat5\webapps\Log\WEB-INF\classes\resources\application.properties When the JSP execute <html:errors property="logstime"/>,it raise following error: javax.servlet.ServletException: Cannot find message resources under key org.apache.struts.action.MESSAGE org.apache.jasper.runtime.PageContextImpl.doHandlePageException( PageContextImpl.java:858) org.apache.jasper.runtime.PageContextImpl.handlePageException( PageContextImpl.java:791) org.apache.jsp.index_jsp._jspService(org.apache.jsp.index_jsp:91) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97) javax.servlet.http.HttpServlet.service(HttpServlet.java:802) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java :332) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264) javax.servlet.http.HttpServlet.service(HttpServlet.java:802) org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java :1062) org.apache.struts.action.RequestProcessor.internalModuleRelativeForward( RequestProcessor.java:1000) org.apache.struts.action.RequestProcessor.processValidate( RequestProcessor.java:965) org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:204) org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196) org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432) javax.servlet.http.HttpServlet.service(HttpServlet.java:709) javax.servlet.http.HttpServlet.service(HttpServlet.java:802) I have configure the application.properties,why raise above error? Thanks in advance! Best Regards, phoenix