javax.servlet.ServletException：PWC1232：超出嵌套请求分派的最大深度：20

发布于 2024-11-06 07:20:50 字数 5622 浏览 0 评论 0原文

当我部署 JSF 页面时，出现此错误。我使用休眠。我想用一个 Java 类创建一个简单的 JSP 表单。

javax.servlet.ServletException：PWC1232：超出嵌套请求分派的最大深度：20

我的faces-config.xml：

<?xml version="1.0" encoding="UTF-8"?>
<faces-config version="1.2" xmlns="http://java.sun.com/xml/ns/javaee"
 xmlns:xi="http://www.w3.org/2001/XInclude"
 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-facesconfig_1_2.xsd">
 <managed-bean>
  <managed-bean-name>modelTime</managed-bean-name>
  <managed-bean-class>org.projet.ModelTime</managed-bean-class>
  <managed-bean-scope>request</managed-bean-scope>
 </managed-bean>

 <navigation-rule> <display-name> home</display-name>
  <from-view-id> /index.jsp</from-view-id> 
  <navigation-case> <from-outcome>newTimesheet</from-outcome> 
  <to-view-id> /newTimesheet.jsp</to-view-id> 
  </navigation-case> 
  </navigation-rule>
</faces-config>

我的web.xml：

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
  <display-name>Time</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
  <servlet>
    <servlet-name>Faces Servlet</servlet-name>
    <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>*.jsp</url-pattern>
  </servlet-mapping>
  <context-param>
    <description>State saving method: 'client' or 'server' (=default). See JSF Specification 2.5.2</description>
    <param-name>javax.faces.STATE_SAVING_METHOD</param-name>
    <param-value>client</param-value>
  </context-param>
  <context-param>
    <param-name>javax.servlet.jsp.jstl.fmt.localizationContext</param-name>
    <param-value>resources.application</param-value>
  </context-param>
  <listener>
    <listener-class>com.sun.faces.config.ConfigureListener</listener-class>
  </listener>
  <servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>*.jsf</url-pattern>
  </servlet-mapping>
  <servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>*.faces</url-pattern>
  </servlet-mapping>
</web-app>

我的newTimesheet.jsp ：

<%@ page session="true" isThreadSafe="true" import="org.projet.*,java.net.*, java.io.*, java.util.*,net.sf.hibernate.*,net.sf.hibernate.cfg.*,net.sf.hibernate.expression.*" %>


<html>

    <head>
        <meta http-equiv="Content-Language" content="en-us">
        <meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
        <title>NewTimesheet</title>
    </head>






    <body topmargin="0" leftmargin="0" vlink="#0000FF" alink="#0000FF">

        <div align="left">
          <table border="0" cellpadding="0" cellspacing="0" bordercolor="#111111" width="84%" height="228" align="left">
            <tr>
              <td width="13%" height="35" align="left" valign="top">&nbsp;</td>
              <td width="87%" height="35" align="left" valign="bottom">
              <font face="Arial"><b>Create a new &quot;timesheet&quot;</b></font></td>
            </tr>
            <tr>
              <td width="14%" height="192" align="left" valign="top">&nbsp;</td>
              <td width="86%" height="192" align="left" valign="top">
              <form method="POST" action="newTimesheet.jsp">
              <input type="hidden" name="CID" value="1">
                <font face="Courier New"><font size="2"><br>
                <br>
                Category:&nbsp;&nbsp;&nbsp;&nbsp; </font>
                <input type="text" name="formCategoryMsg" size="38"><font size="2"><br>
                Description:&nbsp; </font><input type="text" name="formCategoryDescription" size="38"><br>
        &nbsp;</font></p>
                <p align="left"><font face="Courier New">
                <input type="submit" value="Submit" name="B1"><input type="reset" value="Reset" name="B2"></font></p>
              </form>
              <p>&nbsp;</td>
            </tr>
          </table>
        </div>

    </body>

</html>

<%!

这是怎么造成的以及如何解决？

原文

I get this error when I deploy my JSF page. I use Hibernate. I want to create a simple JSP form with one Java class.

javax.servlet.ServletException: PWC1232: Exceeded maximum depth for nested request dispatches: 20

My faces-config.xml:

<?xml version="1.0" encoding="UTF-8"?>
<faces-config version="1.2" xmlns="http://java.sun.com/xml/ns/javaee"
 xmlns:xi="http://www.w3.org/2001/XInclude"
 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-facesconfig_1_2.xsd">
 <managed-bean>
  <managed-bean-name>modelTime</managed-bean-name>
  <managed-bean-class>org.projet.ModelTime</managed-bean-class>
  <managed-bean-scope>request</managed-bean-scope>
 </managed-bean>

 <navigation-rule> <display-name> home</display-name>
  <from-view-id> /index.jsp</from-view-id> 
  <navigation-case> <from-outcome>newTimesheet</from-outcome> 
  <to-view-id> /newTimesheet.jsp</to-view-id> 
  </navigation-case> 
  </navigation-rule>
</faces-config>

My web.xml:

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
  <display-name>Time</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
  <servlet>
    <servlet-name>Faces Servlet</servlet-name>
    <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>*.jsp</url-pattern>
  </servlet-mapping>
  <context-param>
    <description>State saving method: 'client' or 'server' (=default). See JSF Specification 2.5.2</description>
    <param-name>javax.faces.STATE_SAVING_METHOD</param-name>
    <param-value>client</param-value>
  </context-param>
  <context-param>
    <param-name>javax.servlet.jsp.jstl.fmt.localizationContext</param-name>
    <param-value>resources.application</param-value>
  </context-param>
  <listener>
    <listener-class>com.sun.faces.config.ConfigureListener</listener-class>
  </listener>
  <servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>*.jsf</url-pattern>
  </servlet-mapping>
  <servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>*.faces</url-pattern>
  </servlet-mapping>
</web-app>

My newTimesheet.jsp:

<%@ page session="true" isThreadSafe="true" import="org.projet.*,java.net.*, java.io.*, java.util.*,net.sf.hibernate.*,net.sf.hibernate.cfg.*,net.sf.hibernate.expression.*" %>


<html>

    <head>
        <meta http-equiv="Content-Language" content="en-us">
        <meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
        <title>NewTimesheet</title>
    </head>






    <body topmargin="0" leftmargin="0" vlink="#0000FF" alink="#0000FF">

        <div align="left">
          <table border="0" cellpadding="0" cellspacing="0" bordercolor="#111111" width="84%" height="228" align="left">
            <tr>
              <td width="13%" height="35" align="left" valign="top"> </td>
              <td width="87%" height="35" align="left" valign="bottom">
              <font face="Arial"><b>Create a new "timesheet"</b></font></td>
            </tr>
            <tr>
              <td width="14%" height="192" align="left" valign="top"> </td>
              <td width="86%" height="192" align="left" valign="top">
              <form method="POST" action="newTimesheet.jsp">
              <input type="hidden" name="CID" value="1">
                <font face="Courier New"><font size="2"><br>
                <br>
                Category:     </font>
                <input type="text" name="formCategoryMsg" size="38"><font size="2"><br>
                Description:  </font><input type="text" name="formCategoryDescription" size="38"><br>
         </font></p>
                <p align="left"><font face="Courier New">
                <input type="submit" value="Submit" name="B1"><input type="reset" value="Reset" name="B2"></font></p>
              </form>
              <p> </td>
            </tr>
          </table>
        </div>

    </body>

</html>

<%!

How is this caused and how can I solve it?

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追我者格杀勿论 2024-11-13 07:20:50

此条目

  <servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>*.jsp</url-pattern>
  </servlet-mapping>

导致 FacesServlet 在无限循环中运行，因为 JSF 在解析视图时将委托给 JSP servlet，但您已将 FacesServlet 映射为侦听同一视图URL 模式作为 servletcontainer 的内置 JSP servlet！

将其替换为更特定于 JSF 的 URL 模式（例如 *.jsf）

  <servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>*.jsf</url-pattern>
  </servlet-mapping>

，并将 JSF 请求 URL 更改为以 *.jsf 结尾。

与具体问题无关，您的表单没有使用 JSF 标记和托管 bean 绑定。所以我想知道 JSF 配置与您有何关系。您可能想首先花时间学习 JSF。

This entry

  <servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>*.jsp</url-pattern>
  </servlet-mapping>

is causing the FacesServlet to run in an infinite loop because JSF will delegate to the JSP servlet when resolving views, but you've mapped the FacesServlet to listen on the same URL pattern as the servletcontainer's builtin JSP servlet!

Replace it by a more JSF-specific URL pattern such as *.jsf

  <servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>*.jsf</url-pattern>
  </servlet-mapping>

and change your JSF request URLs to end with *.jsf instead.

Unrelated to the concrete problem, your form is not utilizing JSF tags and managed bean bindings. So I wonder how the JSF configuration is relevant to you. You might want to spend time in learning JSF first.

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