问题
I am trying to run my struts application but I am getting a error action is not mapped I have seen the namespace it is correct but still getting the error?
struts.xml:
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<constant name="struts.enable.DynamicMethodInvocation" value="false" />
<constant name="struts.devMode" value="false" />
<include file="register.xml"/>
<!-- Add packages here -->
</struts>
And my register.xml:
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<package name="register" namespace="/" extends="struts-default">
<action name="Register" class="com.struts2.RegisterAction">
<result name="input">/register.jsp</result>
<result type="redirectAction">register.jsp</result>
</action>
<!-- Add actions here -->
</package>
</struts>
I am validating my register page and the validation XML as follows
RegisterAction-validation.xml:
<!DOCTYPE validators PUBLIC
"-//OpenSymphony Group//XWork Validator 1.0.2//EN"
"http://www.opensymphony.com/xwork/xwork-validator-1.0.2.dtd">
<validators>
<field name="username">
<field-validator type="requiredstring">
<message key="requiredstring"/>
</field-validator>
</field>
<field name="password">
<field-validator type="requiredstring">
<message key="requiredstring"/>
</field-validator>
<field-validator type="stringlength">
<param name="minLength">6</param>
<param name="trim">true</param>
<message key="requiredpassword"/>
</field-validator>
</field>
<field name="email">
<field-validator type="requiredstring">
<message key="requiredstring"/>
</field-validator>
<field-validator type="email">
<message key="requiredemail"/>
</field-validator>
</field>
<field name="gender">
<field-validator type="requiredstring">
<message key="requiredstring"/>
</field-validator>
</field>
<field name="postalcode">
<field-validator type="requiredstring">
<message key="requiredstring"/>
</field-validator>
<field-validator type="regex">
<param name="expression"><![CDATA[^\d*$]]></param>
<message key="requiredinteger"/>
</field-validator>
</field>
</validators>
And my register.jsp as follows:
<%@ page contentType="text/html; charset=UTF-8" %>
<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
<head>
<title>Validation Struts page</title>
<s:head/>
</head>
<body>
<s:form action="Register">
<s:textfield key="username"/>
<s:password key="password" />
<s:textfield key="email" />
<s:select headerKey="" headerValue="Select Gender"
key="gender" list="#{'M':'Male','F':'Female'}" />
<s:textfield key="postalcode" />
<s:submit/>
</s:form>
</body>
</html>
My Project Structure as Follows:
Strutsvalidation
--src-->
com.struts2(package)-->
register.xml,
registeraction-validation.xml,
javaclasses,
struts.xml
--webcontent-->
web-inf-->
web.xml
register.jsp(in web content)
I am getting the error as follows?
There is no Action mapped for action name Register. - [unknown location]
at com.opensymphony.xwork2.DefaultActionProxy.prepare(DefaultActionProxy.java:185)
at org.apache.struts2.impl.StrutsActionProxy.prepare(StrutsActionProxy.java:63)
at org.apache.struts2.impl.StrutsActionProxyFactory.createActionProxy(StrutsActionProxyFactory.java:37)
at com.opensymphony.xwork2.DefaultActionProxyFactory.createActionProxy(DefaultActionProxyFactory.java:58)
at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:552)
at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)
回答1:
This configuration is wrong
<result type="redirectAction">register.jsp</result>
use
<result>/register.jsp</result>
The redirectAction result should be used to redirect to the action, which name is used for location.
The exception comes from the s:form tag when you tried to submit it. The action Register actually packaged in namespace /. This not a default namespace and therefore should be used on the s:form tag.
<s:form namespace="/" action="Register">
来源：https://stackoverflow.com/questions/25630913/regarding-the-action-mapping-in-struts2-there-is-no-action-mapped