更改Java版本后，“路径login.page不能以“ /”字符开头”消息异常

Question

我有一个适用于以下设备的Web应用程序：Tomcat 5.0 Struts 1.0 Java 1.5

我必须切换到Java 1.6。当我尝试这样做时，我在浏览器中收到了以下异常堆栈：

javax.servlet.ServletException: Path login.page does not start with a "/" character
    org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:286)
    org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
    org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:72)
    org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:712)
    org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:682)
    org.apache.jsp.index_jsp._jspService(index_jsp.java:45)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:133)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:311)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:301)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:248)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
    org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:78)
    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:77)

根本原因

java.lang.IllegalArgumentException: Path login.page does not start with a "/" character
    org.apache.struts.chain.commands.servlet.PerformForward.handleAsForward(PerformForward.java:107)
    org.apache.struts.chain.commands.servlet.PerformForward.perform(PerformForward.java:96)
    org.apache.struts.chain.commands.AbstractPerformForward.execute(AbstractPerformForward.java:54)
    org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
    org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
    org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:304)
    org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
    org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
    org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
    org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:72)
    org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:712)
    org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:682)
    org.apache.jsp.index_jsp._jspService(index_jsp.java:45)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:133)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:311)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:301)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:248)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
    org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:78)
    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:77)

Answer 1

看起来好像发出了一个请求"login.page"，该请求并非以开头，这是例外情况"/"。尝试要求"/login.page"。

大多数Servlet库都要求路径名以开头"/"。例如：javax.servlet.ServletContext＃getRequestDispatcher：

路径名必须以a开头，"/"并被解释为相对于当前上下文根。使用getContext获得RequestDispatcher的国外环境资源。