JSP定制Taglib

Question

我在Liferay 7中運行，但是我試圖創建一個自定義標簽，但是在嘗試運行它時始終出現此錯誤。

[fileinstall-/Development/liferay-ce-portal-7.0-ga3/osgi/war][org_apache_felix_fileinstall:103] Error while starting bundle: webbundle:file:/Development/liferay-ce-portal-7.0-ga3/osgi/war/digital-lexicon-portlet-7.0.0.1.war?Bundle-SymbolicName=digital-lexicon-portlet&Web-ContextPath=/digital-lexicon-portlet 
org.osgi.framework.BundleException: Could not resolve module: digital-lexicon-portlet [587]_  Unresolved requirement: Import-Package: com.swabunga.spell.engine; resolution:="optional"_  Unresolved requirement: Import-Package: com.swabunga.spell.event; resolution:="optional"_  Unresolved requirement: Import-Package: net.fortuna.ical4j.model; resolution:="optional"_  Unresolved requirement: Import-Package: net.fortuna.ical4j.model.property; resolution:="optional"_  Unresolved requirement: Import-Package: org.apache.axis.tools.ant.wsdl; resolution:="optional"_  Unresolved requirement: Import-Package: org.apache.bsf; resolution:="optional"_  Unresolved requirement: Import-Package: org.apache.poi.hssf.usermodel; resolution:="optional"_  Unresolved requirement: Import-Package: org.apache.poi.ss.usermodel; resolution:="optional"_  Unresolved requirement: Import-Package: org.apache.portals.bridges.common; resolution:="optional"_  Unresolved requirement: Import-Package: org.apache.portals.bridges.struts; resolution:="optional"_  Unresolved requirement: Require-Capability: osgi.extender; filter:="(&(osgi.extender=jsp.taglib)(uri=/WEB-INF/tld/tile.tld))"_ [Sanitized]
at org.eclipse.osgi.container.Module.start(Module.java:429)
at org.eclipse.osgi.internal.framework.EquinoxBundle.start(EquinoxBundle.java:402)
at org.apache.felix.fileinstall.internal.DirectoryWatcher.startBundle(DirectoryWatcher.java:1252)
at org.apache.felix.fileinstall.internal.DirectoryWatcher.startBundles(DirectoryWatcher.java:1224)
at org.apache.felix.fileinstall.internal.DirectoryWatcher.doProcess(DirectoryWatcher.java:512)
at org.apache.felix.fileinstall.internal.DirectoryWatcher.process(DirectoryWatcher.java:361)
at org.apache.felix.fileinstall.internal.DirectoryWatcher.run(DirectoryWatcher.java:313)

我遵循了教程，其結構如下所示：

docroot/WEB-INF/src
  com.lexicon
    - TileTag.java
  com.liferay.docs.lexicon.portlet
    - LexiconPortlet.java

我的TileTag.java看起來像這樣：

package com.liferay.docs.lexicon.portlet;

import javax.servlet.jsp.tagext.*;
import javax.servlet.jsp.*;
import java.io.*;

public class TileTag extends SimpleTagSupport {

  public void doTag() throws JspException, IOException {
    JspWriter out = getJspContext().getOut();
    out.println("Hello Custom Tag!");
  }
}

我的docroot/WEB-INF/tld/tile.tld看起來像這樣：

<?xml version="1.0"?>
<!DOCTYPE taglib PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.2//EN" "http://java.sun.com/dtd/web-jsptaglibrary_1_2.dtd">

<taglib>
  <tlib-version>1.0</tlib-version>
  <jsp-version>2.0</jsp-version>
  <short-name>UI Tile</short-name>
  <tag>
    <name>tile</name>
    <tag-class>com.liferay.docs.lexicon.portlet.TileTag</tag-class>
    <body-content>empty</body-content>
  </tag>

在我的view.jsp我有：

<%@ taglib uri="/WEB-INF/tld/tile.tld" prefix="lex" %>
<lex:tile />

Answer 1

我遇到了幾乎完全相同的情況。 我正在將一個JBoss Portal portlet項目移植到Liferay Portal / Wildfly環境中，該項目將生成一個war文件，並且可以完美運行。 當我從JSP文件中刪除<％@ taglib描述符時，BundleException消失了（這表明是問題所在），但是我失去了JSP中的taglib功能，這就是在其中包含它的全部目的。第一名。