Eclipse/Tomcat忘記自定義標籤？

Question

我在Windows 7 64位上使用Eclipse Kepler和Tomcat 7。

如果我清理項目並重新啓動服務器，一切正常。但是，如果我工作了幾分鐘...就像編輯一個JSP ... Tomcat barfs以下...

它抱怨失蹤的標記是頁面佈局的標記。除了一些jspf包含的內容，內容頁面還會調用其他標記，這裏沒有什麼令人興奮的。但再次，沒有什麼令人興奮的...

我不明白我是如何造成這種情況編譯和運行良好的最初。但是，然後Tomcat似乎失去了標籤類的跟蹤。

如果我清理項目，它可以追溯到工作了一段時間...

任何想法？ 感謝

HTTP Status 500 - Unable to compile class for JSP: 

type Exception report 

message Unable to compile class for JSP: 

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

exception 

org.apache.jasper.JasperException: Unable to compile class for JSP: 

An error occurred at line: 33 in the jsp file: /folder/page.jsp 
org.apache.jsp.tag.weblayout_002dmain_tag cannot be resolved to a type 
30: 
31: 
32: 
33: <tags:layout-main> 
34:  <jsp:attribute name="title">page</jsp:attribute> 
35:  <jsp:attribute name="section">user</jsp:attribute> 
36:  <jsp:attribute name="handle">page</jsp:attribute> 


An error occurred at line: 33 in the jsp file: /folder/page.jsp 
org.apache.jsp.tag.weblayout_002dmain_tag cannot be resolved to a type 
30: 
31: 
32: 
33: <tags:layout-main> 
34:  <jsp:attribute name="title">page</jsp:attribute> 
35:  <jsp:attribute name="section">user</jsp:attribute> 
36:  <jsp:attribute name="handle">page</jsp:attribute> 


An error occurred at line: 106 in the jsp file: /folder/page.jsp 
org.apache.jsp.tag.webrating_tag cannot be resolved to a type 
103:   <div class="page clearfix"> 
104:    <div class="title"> 
105:     <h3>${page.name}</h3> 
106:     <br><tags:rating value="${3}"/>       
107:     <br>${page.type} 
108:    </div> 
109:    <div class="hours"> 

Answer 1

嘗試採取以下的，它應該工作

1. 副本罐子在WEB-INF/lib/目錄，然後重新啓動您的Web容器

2. 嘗試

   <%@ page language="java" import="Pkgname.className.*" %> 
   

例如

<%@ page language="java" import="org.apache.jsp.tag.webrating" %> 

1. 清理項目，並重新啓動服務器