<% String userName = "Bob"; pageContext.setAttribute("userName", userName); %> <html:link page="/Edit.do" paramId="user" paramName="userName"> Edit User </html:link> When this snippet is evaluated, it will result in an HTML snippet similar to the following: <a href="/webappname/Edit.do?user=Bob">Edit User</a>
forward Identifies the name of the global forward element that will receive control of the forwarded request.(Optional) 通过上面所说,你的logon必须是全局性的forward
<struts-config> <!-- ========== Form Bean Definitions =================================== --> <!-- ========== Global Forward Definitions ============================== --> <global-forwards> <forward name="logon" path="/logon.jsp"/> </global-forwards> <!-- ========== Action Mapping Definitions ============================== --> <action-mappings> <!-- Process a user logon --> <action path="/logon" type="mystruts.src.logon.LogonAction" name="logonForm" scope="request" input="/logon.jsp" parameter="/mystruts/jsp/login.jsp" > </action> </action-mappings></struts-config>
String userName = "Bob";
pageContext.setAttribute("userName", userName);
%>
<html:link page="/Edit.do"
paramId="user" paramName="userName">
Edit User
</html:link>
When this snippet is evaluated, it will result in an HTML snippet similar to the following:
<a href="/webappname/Edit.do?user=Bob">Edit User</a>
will receive control of the forwarded request.(Optional)
通过上面所说,你的logon必须是全局性的forward
<!-- ========== Global Forward Definitions ============================== -->
<global-forwards>
<forward name="logon" path="/logon.jsp"/>
</global-forwards>
<!-- ========== Action Mapping Definitions ============================== -->
<action-mappings>
<!-- Process a user logon -->
<action path="/logon"
type="mystruts.src.logon.LogonAction"
name="logonForm"
scope="request"
input="/logon.jsp"
parameter="/mystruts/jsp/login.jsp"
>
</action>
</action-mappings></struts-config>
:
我将页面简化为
<%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %>
<%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" %>
<%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic" %>
<html>
<head>
</head>
<body>
<html:link forward="/logon">Sign in</html:link>
</body>
</html>struts-config
<?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 Bean Definitions =================================== -->
<!-- ========== Global Forward Definitions ============================== -->
<global-forwards>
<forward name="logon" path="/logon.jsp"/>
</global-forwards>
<!-- ========== Action Mapping Definitions ============================== -->
</struts-config>错误:
javax.servlet.ServletException: Cannot create rewrite URL: java.net.MalformedURLException: Cannot retrieve ActionForwards collection
这是怎么回事
我作了测试一切ok
<%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" %>
<%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic" %>
<html>
<head>
</head>
<body>
<html:link forward="logon">Sign in</html:link>
</body>
</html>
/////////////////////struts
<?xml version="1.0" encoding="UTF-8"?>
<!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>
<global-forwards>
<forward name="logon" path="/logon.jsp"/>
</global-forwards>
</struts-config>////////////////////
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
<servlet>
<servlet-name>action</servlet-name>
<servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
<init-param>
<param-name>debug</param-name>
<param-value>2</param-value>
</init-param>
<init-param>
<param-name>config</param-name>
<param-value>/WEB-INF/struts-config.xml</param-value>
</init-param>
<load-on-startup>2</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>action</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
<taglib>
<taglib-uri>/WEB-INF/struts-bean.tld</taglib-uri>
<taglib-location>/WEB-INF/struts-bean.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>/WEB-INF/struts-html.tld</taglib-uri>
<taglib-location>/WEB-INF/struts-html.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>/WEB-INF/struts-logic.tld</taglib-uri>
<taglib-location>/WEB-INF/struts-logic.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>/WEB-INF/struts-template.tld</taglib-uri>
<taglib-location>/WEB-INF/struts-template.tld</taglib-location>
</taglib>
</web-app>