有错？

LogIn.jsp 页面：
<html:form action="/Login.do" method="post">

struts-config.xml文件：

<action-mappings >
<action
attribute="logInForm"
name="logInForm"
path="/Login"
scope="request"
type="LogInAction"

validate="true"
input="/error.jsp"
/>

打开 http://127.0.0.1:8080/Struts_Demo/LogIn.jsp 出现如下错误

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: An exception occurred processing JSP page /LogIn.jsp at line 31

28:
29:
30:
31: <html:form action="/Login.do" method="post">
32:<html:text property="userName"></html:text><br>
33:<html:password property="userPassword"></html:password><br>
34:<input type="submit" value="鐧婚檰"><br>

Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:524)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:417)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)

root cause

javax.servlet.ServletException: javax.servlet.jsp.JspException: Cannot retrieve mapping for action /Login
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:850)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:779)
org.apache.jsp.LogIn_jsp._jspService(LogIn_jsp.java:87)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)

root cause

javax.servlet.jsp.JspException: Cannot retrieve mapping for action /Login
org.apache.struts.taglib.html.FormTag.lookup(FormTag.java:759)
org.apache.struts.taglib.html.FormTag.doStartTag(FormTag.java:443)
org.apache.jsp.LogIn_jsp._jspx_meth_html_005fform_005f0(LogIn_jsp.java:179)
org.apache.jsp.LogIn_jsp._jspx_meth_html_005fhtml_005f0(LogIn_jsp.java:132)
org.apache.jsp.LogIn_jsp._jspService(LogIn_jsp.java:78)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)

这是为什么 是不是和前两个文件的这些部分有关？ login的大小写也都试过了，没有用哦

其他文件还有
fail.jsp, error.jsp, success.jsp, LogInActionForm.java, LogInAction.java

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