Please help a struggling newbie, and first time mailing list user. The following Netbeans 6.0 project is using Glassfish. Directory listing: TS_6 TS_6/src/ TS_6/src/conf/ TS_6/src/conf/MANIFEST.MF TS_6/src/java/ TS_6/src/java/HelloWorld.java TS_6/src/java/struts.xml TS_6/src/java/ts/ TS_6/src/java/ts/BaseAction.java TS_6/src/java/ts/Login.java TS_6/src/java/ts/ts_struts.xml TS_6/test/ TS_6/web/ TS_6/web/HelloWorld.jsp TS_6/web/index.html TS_6/web/index.jsp TS_6/web/jsp/ TS_6/web/jsp/login.jsp TS_6/web/jsp/login_error.jsp TS_6/web/jsp/login_input.jsp TS_6/web/jsp/login_success.jsp TS_6/web/WEB-INF/ TS_6/web/WEB-INF/sun-web.xml TS_6/web/WEB-INF/web.xml TS_6/web/WEB-INF/lib/ TS_6/web/WEB-INF/lib/commons-fileupload-1.2.1.jar TS_6/web/WEB-INF/lib/commons-io-1.3.2.jar TS_6/web/WEB-INF/lib/commons-logging-1.0.4.jar TS_6/web/WEB-INF/lib/freemarker-2.3.12.jar TS_6/web/WEB-INF/lib/ognl-2.6.11.jar TS_6/web/WEB-INF/lib/struts2-core-2.1.2.jar TS_6/web/WEB-INF/lib/xwork-2.1.1.jar Below find the files that I view as being involved in my problem web.xml <?xml version="1.0" encoding="UTF-8"?> <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"; xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd";> <filter> <filter-name>struts2</filter-name> <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-cla ss> </filter> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.jsp</welcome-file> </welcome-file-list> </web-app> struts.xml <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd";> <struts> <include file="ts/ts_struts.xml"/> <package name="hello" extends="struts-default"> <action name="HelloWorld" class="HelloWorld"> <result>/HelloWorld.jsp</result> </action> </package> </struts> ts_struts.xml <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd";> <struts> <package name="ts" namespace="/ts" extends="struts-default"> <action name="Login" class="ts.Login"> <result name="success">/jsp/login_success.jsp</result> <result name="input">/jsp/login_input.jsp</result> <result name="error">/jsp/login_error.jsp</result> </action> </package> </struts> index.html <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <html> <head> <META HTTP-EQUIV="Refresh" CONTENT="0;URL=ts/Login.action"> </head> <body> <p>Loading ...</p> </body> </html> Login.java package ts; public class Login extends BaseAction { public String execute() throws Exception { if (isInvalid(getUsername())) { return INPUT; } if (isInvalid(getPassword())) { return INPUT; } return SUCCESS; } private boolean isInvalid(String value) { return (value == null || value.length() == 0); } private String username; public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } private String password; public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } } BaseAction.java package ts; import com.opensymphony.xwork2.ActionSupport; public class BaseAction extends ActionSupport { } login_input.jsp <%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1" %> <%@ taglib prefix="s" uri="/struts-tags"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd";> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Login Input</title> </head> <body> <h1>/jsp/login_input.jsp</h1> <h2>Input Page</h2> </body> </html> RUN... http://localhost:8080/TS_6/ yields this url... http://localhost:8080/TS_6/ts/Login.action which displays... /jsp/login_input.jsp Input Page This all seems wired up well enough for the Login action to find the mapped jsp BUT... When I edit the same jsp by adding a form... login_input.jsp <%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1" %> <%@ taglib prefix="s" uri="/struts-tags"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd";> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Login Input</title> </head> <body> <h1>/jsp/login_input.jsp</h1> <h2>Input Page</h2> <s:form action="Login" namespace="/ts"> <s:textfield key="username"/> <s:password key="password" /> <s:submit/> </s:form> </body> </html> And execute again, http://localhost:8080/TS_6/ts/Login.action there is an exception... java.lang.IllegalArgumentException: URI is not hierarchical What is it with the <s:form> tag that is causing this error? What does the error log entry mean? java.lang.IllegalArgumentException: URI is not hierarchical Thanks for any help, I've tried many times to work this out, and I just can't see the forest through the trees.
