运行应用标记库的JSP文件时，出现错误，请帮忙？？

Question

是不是你缺少某个tld？
找个完整的可以运行的，试试看。

Answer 1

我把原文件添上，希望大家帮忙解决！！！
ExampeTag.java 目录是install_dir/ROOT/WEB-INF/classes/moreservlets/tags/ExampleTag.class.=================================================
package moreservlets.tags;import javax.servlet.jsp.*;
import javax.servlet.jsp.tagext.*;
import java.io.*;/** Very simple JSP tag that just inserts a string
 *  ("Custom tag example...") into the output.
 *  The actual name of the tag is not defined here;
 *  that is given by the Tag Library Descriptor (TLD)
 *  file that is referenced by the taglib directive
 *  in the JSP file.
 *  <P>
 *  Taken from More Servlets and JavaServer Pages
 *  from Prentice Hall and Sun Microsystems Press,
 *  http://www.moreservlets.com/.
 *  &copy; 2002 Marty Hall; may be freely used or adapted.
 */public class ExampleTag extends TagSupport {
  public int doStartTag() {
    try {
      JspWriter out = pageContext.getOut();
      out.print("Custom tag example " +
                "(moreservlets.tags.ExampleTag)");
    } catch(IOException ioe) {
      System.out.println("Error in ExampleTag: " + ioe);
    }
    return(SKIP_BODY);
  }
}
============================================================
installdir\webapps\ROOT\WEB-INF\tlds\msajsp-taglib.tld<?xml version="1.0" encoding="ISO-8859-1" ?>
<!DOCTYPE taglib
 PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.1//EN"
 "http://java.sun.com/j2ee/dtds/web-jsptaglibrary_1_1.dtd"><!-- a tag library descriptor --><taglib>
  <tlibversion>1.0</tlibversion>
  <jspversion>1.1</jspversion>
  <shortname>msajsp-tags</shortname>
  <info>
    A tag library from More Servlets and JavaServer Pages,
    http://www.moreservlets.com/.
  </info><!--
  <tag>
    The name (after prefix) tag will have in JSP code
    <name>example</name>    The actual class implementing tag. In
    Tomcat, it MUST be in a package.
    <tagclass>moreservlets.tags.ExampleTag</tagclass>    One of three values describing what goes between
    start and end tag. 
      empty: no body 
      JSP: body that is evaluated by container normally,
           then possibly processed by tag
      tagdependent: body is only processed by tag;
                    JSP in body is not evaluated. 
    <bodycontent>empty</bodycontent>    Descriptive information about tag.
    <info>Simplest example: inserts one line of output</info>
  </tag>      
-->  <tag>
    <name>example</name>
    <tagclass>moreservlets.tags.ExampleTag</tagclass>
    <bodycontent>empty</bodycontent>
    <info>Simplest example: inserts one line of output</info>
  </tag>        <tag>
    <name>simplePrime</name>
    <tagclass>moreservlets.tags.SimplePrimeTag</tagclass>
    <bodycontent>empty</bodycontent>
    <info>Outputs a random 50-digit prime.</info>
  </tag>  <tag>
    <name>prime</name>
    <tagclass>moreservlets.tags.PrimeTag</tagclass>
    <bodycontent>empty</bodycontent>
    <info>Outputs a random N-digit prime.</info>
    <attribute>
      <name>length</name>
      <required>false</required>
    </attribute>
  </tag>  <tag>
    <name>heading</name>
    <tagclass>moreservlets.tags.HeadingTag</tagclass>
    <bodycontent>JSP</bodycontent>
    <info>Outputs a 1-cell table used as a heading.</info>
    <attribute>
      <name>bgColor</name>
      <required>true</required>  <!-- bgColor is required -->
    </attribute>
    <attribute>
      <name>color</name>
      <required>false</required>
    </attribute>
    <attribute>
      <name>align</name>
      <required>false</required>
    </attribute>
    <attribute>
      <name>fontSize</name>
      <required>false</required>
    </attribute>
    <attribute>
      <name>fontList</name>
      <required>false</required>
    </attribute>
    <attribute>
      <name>border</name>
      <required>false</required>
    </attribute>
    <attribute>
      <name>width</name>
      <required>false</required>
    </attribute>
  </tag>  <tag>
    <name>debug</name>
    <tagclass>moreservlets.tags.DebugTag</tagclass>
    <bodycontent>JSP</bodycontent>
    <info>Includes body only if debug param is set.</info>
  </tag>  <tag>
    <name>filter</name>
    <tagclass>moreservlets.tags.FilterTag</tagclass>
    <bodycontent>JSP</bodycontent>
    <info>Replaces HTML-specific characters in body.</info>
  </tag>  <tag>
    <name>repeat</name>
    <tagclass>moreservlets.tags.RepeatTag</tagclass>
    <bodycontent>JSP</bodycontent>
    <info>Repeats body the specified number of times.</info>
    <attribute>
      <name>reps</name>
      <required>true</required>
      <!-- rtexprvalue indicates whether attribute
           can be a JSP expression. -->
      <rtexprvalue>true</rtexprvalue>
    </attribute>
  </tag>  <tag>
    <name>if</name>
    <tagclass>moreservlets.tags.IfTag</tagclass>
    <bodycontent>JSP</bodycontent>
    <info>if/condition/then/else tag.</info>
  </tag>
  <tag>
    <name>condition</name>
    <tagclass>moreservlets.tags.IfConditionTag</tagclass>
    <bodycontent>JSP</bodycontent>
    <info>condition part of if/condition/then/else tag.</info>
  </tag>
  <tag>
    <name>then</name>
    <tagclass>moreservlets.tags.IfThenTag</tagclass>
    <bodycontent>JSP</bodycontent>
    <info>then part of if/condition/then/else tag.</info>
  </tag>
  <tag>
    <name>else</name>
    <tagclass>moreservlets.tags.IfElseTag</tagclass>
    <bodycontent>JSP</bodycontent>
    <info>else part of if/condition/then/else tag.</info>
  </tag></taglib>
====================================================
installdir\webapps\ROOT\jsp-intro\SimpleExample.jsp<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<!-- 
Illustration of very simple JSP custom tag. Taken from More Servlets and JavaServer Pages
from Prentice Hall and Sun Microsystems Press,
http://www.moreservlets.com/.
(C) 2002 Marty Hall; may be freely used or adapted.
-->
<HTML>
<HEAD>
<%@ taglib uri="/msajsp-taglib.tld" prefix="msajsp" %>
<TITLE><msajsp:example /></TITLE>
<LINK REL=STYLESHEET
      HREF="JSP-Styles.css"
      TYPE="text/css">
</HEAD>
<BODY>
<H1><msajsp:example /></H1>
<msajsp:example />
</BODY>
</HTML>=================================================
运行http://localhost/jsp-intro/SimpleExample.jsp,
org.apache.jasper.JasperException: Unable to initialize TldLocationsCache: zip file closed

Answer 2

我的tomcat不能运行struts的标签：（

Answer 3

to dytsoft(anway.vicp.net）能给个例子么或打个比方？？

Answer 4

%JAVA_HOME%\lib;%TOMCAT_HOME%\common\lib加入环境变量，也不行，还是一样

Answer 5

<%@ taglib uri="/msajsp-taglib.tld" prefix="msajsp" %>文件msajsp-taglib.tld位置没有放对。以jstl为例子：目录结构如下tag file：\tagtest\WEB-INF\c.tld
web.xml： \tagtest\WEB-INF\web.xml
testjsp： \tagtest\test.jsp
其中web.xml内容为：    <taglib-uri>http://java.sun.com/jstl/core</taglib-uri>
    <taglib-location>/WEB-INF/c.tld</taglib-location>
    </taglib>test.jsp内容为：
<%@ page contentType = "text/html; charset=GBK"%>
<%@ taglib uri = "http://java.sun.com/jstl/core" prefix = "c"%>
对照着看一下吧，应该就明白了。

Answer 6

JSP文件修改如下 <%@ taglib uri="Tag" prefix="msajsp" %>
web.xml修改如下
<taglib>
    <taglib-uri>Tag</taglib-uri>
    <taglib-location>/WEB-INF/tlds/msajsp-taglib.tld</taglib-location>
  </taglib>但是还是不行呀！！！msajsp-taglib.tld目录是C:\Tomcat 5.0\webapps\ROOT\WEB-INF\tlds

Answer 7

<%@ taglib uri="Tag" prefix="msajsp" %>
中的uri 和<taglib-uri></taglib-uri>中的一致了呀？？怎么还是不行呢？希望大家帮帮忙，楼上的大哥非常感谢，但是我还是没试出来，请帮忙想想吧，我已经没折了！！！

Answer 8

a.jsp<HTML>
<HEAD>
<%@ taglib uri="Tag" prefix="msajsp" %>
<TITLE><msajsp:example /></TITLE>
<LINK REL=STYLESHEET
      HREF="JSP-Styles.css"
      TYPE="text/css">
</HEAD>
<BODY>
<H1><msajsp:example /></H1>
<msajsp:example />
</BODY>
</HTML>web.xml
<?xml version="1.0" encoding="ISO-8859-1"?><!DOCTYPE web-app
    PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
    "http://java.sun.com/dtd/web-app_2_3.dtd"><web-app>
  <display-name>Welcome to Tomcat</display-name>
  <description>
     Welcome to Tomcat
  </description>
<!-- JSPC servlet mappings start -->    <servlet>
        <servlet-name>org.apache.jsp.index_jsp</servlet-name>
        <servlet-class>org.apache.jsp.index_jsp</servlet-class>
    </servlet>    <servlet-mapping>
        <servlet-name>org.apache.jsp.index_jsp</servlet-name>
        <url-pattern>/index.jsp</url-pattern>
    </servlet-mapping>
    <servlet>
        <servlet-name>moreservlets.HelloServlet2</servlet-name>
        <servlet-class>moreservlets.HelloServlet2</servlet-class>
    </servlet>    <servlet-mapping>
        <servlet-name>moreservlets.HelloServlet2</servlet-name>
        <url-pattern>/moreservlets.HelloServlet2</url-pattern>
    </servlet-mapping><servlet>
        <servlet-name>moreservlets.ThreeParams</servlet-name>
        <servlet-class>moreservlets.ThreeParams</servlet-class>
    </servlet>    <servlet-mapping>
        <servlet-name>moreservlets.ThreeParams</servlet-name>
        <url-pattern>/servlet/moreservlets.ThreeParams</url-pattern>
    </servlet-mapping>
    
    <servlet>
        <servlet-name>ShowRequestHeaders</servlet-name>
        <servlet-class>moreservlets.ShowRequestHeaders</servlet-class>
    </servlet>    <servlet-mapping>
        <servlet-name>ShowRequestHeaders</servlet-name>
        <url-pattern>/servlet/moreservlets.ShowRequestHeaders</url-pattern>
    </servlet-mapping><servlet>
        <servlet-name>moreservlets.HelloServlet3</servlet-name>
        <servlet-class>moreservlets.HelloServlet3</servlet-class>
    </servlet>    <servlet-mapping>
        <servlet-name>moreservlets.HelloServlet3</servlet-name>
        <url-pattern>/moreservlets.HelloServlet3</url-pattern>
    </servlet-mapping>
    
    <servlet>
        <servlet-name>SearchEngines</servlet-name>
        <servlet-class>moreservlets.SearchEngines</servlet-class>
    </servlet>    <servlet-mapping>
        <servlet-name>SearchEngines</servlet-name>
        <url-pattern>/servlet/moreservlets.SearchEngines</url-pattern>
    </servlet-mapping>
<!-- JSPC servlet mappings end -->
<!-- If URL gives a directory but no filename, try index.jsp
       first and index.html second. If neither is found,
       the result is server specific (e.g., a directory 
       listing).  
  -->
  <!-- Register names for the ShowItem and ShowPurchases
       servlets. These names will be used with servlet-mapping
       to set custom URLs.
  -->
  <servlet>
    <servlet-name>ShowItem</servlet-name>
    <servlet-class>moreservlets.ShowItem</servlet-class>
  </servlet>
  <servlet>
    <servlet-name>ShowPurchases</servlet-name>
    <servlet-class>moreservlets.ShowPurchases</servlet-class>
  </servlet>  <!-- Set the URL http://host/webAppName/DisplayPurchases
       to invoke the servlet that would otherwise be
       available with the URL 
       http://host/webAppName/servlet/moreservlets.ShowPurchases
  -->
  <servlet-mapping>
    <servlet-name>ShowPurchases</servlet-name>
    <url-pattern>/DisplayPurchases</url-pattern>
  </servlet-mapping>  <!-- Set the URL http://host/webAppName/DisplayItem
       to invoke the servlet that would otherwise be
       available with the URL 
       http://host/webAppName/servlet/moreservlets.ShowItem
  -->
  <servlet-mapping>
    <servlet-name>ShowItem</servlet-name>
    <url-pattern>/DisplayItem</url-pattern>
  </servlet-mapping>
  <welcome-file-list>
    <welcome-file>index1.jsp</welcome-file>
    <welcome-file>index.html</welcome-file>
  </welcome-file-list>
 
 <taglib>
    <taglib-uri>Tag</taglib-uri>
    <taglib-location>/WEB-INF/tlds/msajsp-taglib.tld</taglib-location>
  </taglib></web-app>
=================================================
这是修改后的文件。