尝试使用 struts-jquery-tags 但遇到多个异常？

Question

我打算使用struts-jquery taglib，但应用程序会抛出以下错误。基于this question，我将struts更改为struts2，基于this one我将bean添加到struts.xml文件中，但无济于事。

 <%@ taglib prefix="sj" uri="/struts2-jquery-tags" %>

例外情况

ERROR [CommonsLogger.java:38] Unable to load configuration. - bean - jar:file:/C:/Users/Alex/Projects/Myproject/target/Myproject-1.0/WEB-INF/lib/struts2-jquery-grid-plugin-3.7.0.jar!/struts-plugin.xml:27:152

Caused by: Unable to load bean: type:org.apache.struts2.views.TagLibraryDirectiveProvider class:com.jgeppert.struts2.jquery.grid.views.JqueryGridTagLibrary - bean - jar:file:/C:/Users/Alex/Projects/Myproject/target/Myproject-1.0/WEB-INF/lib/struts2-jquery-grid-plugin-3.7.0.jar!/struts-plugin.xml:27:152

Caused by: java.lang.NoClassDefFoundError: org/apache/struts2/views/TagLibraryDirectiveProvider

Caused by: java.lang.ClassNotFoundException: org.apache.struts2.views.TagLibraryDirectiveProvider
    at org.glassfish.web.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1761)
    at org.glassfish.web.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1611)
    ... 63 more

SEVERE:   WebModule[]Exception starting filter struts2
java.lang.InstantiationException
    at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:135)

Caused by: Unable to load configuration. - bean - jar:file:/C:/Users/Alex/Projects/Myproject/target/Myproject-1.0/WEB-INF/lib/struts2-jquery-grid-plugin-3.7.0.jar!/struts-plugin.xml:27:152

Caused by: Unable to load configuration. - bean - jar:file:/C:/Users/Alex/Projects/Myproject/target/Myproject-1.0/WEB-INF/lib/struts2-jquery-grid-plugin-3.7.0.jar!/struts-plugin.xml:27:152

Caused by: Unable to load configuration. - bean - jar:file:/C:/Users/Alex/Projects/Myproject/target/Myproject-1.0/WEB-INF/lib/struts2-jquery-grid-plugin-3.7.0.jar!/struts-plugin.xml:27:152

Caused by: Unable to load configuration. - bean - jar:file:/C:/Users/Alex/Projects/Myproject/target/Myproject-1.0/WEB-INF/lib/struts2-jquery-grid-plugin-3.7.0.jar!/struts-plugin.xml:27:152

Caused by: Unable to load bean: type:org.apache.struts2.views.TagLibraryDirectiveProvider class:com.jgeppert.struts2.jquery.grid.views.JqueryGridTagLibrary - bean - jar:file:/C:/Users/Alex/Projects/Myproject/target/Myproject-1.0/WEB-INF/lib/struts2-jquery-grid-plugin-3.7.0.jar!/struts-plugin.xml:27:152

Caused by: java.lang.NoClassDefFoundError: org/apache/struts2/views/TagLibraryDirectiveProvider

Caused by: java.lang.ClassNotFoundException: org.apache.struts2.views.TagLibraryDirectiveProvider

POM.xml

  <dependency>
            <groupId>org.apache.struts</groupId>
            <artifactId>struts2-core</artifactId>
            <version>2.3.8</version>
        </dependency>
   <dependency>
            <groupId>org.apache.struts</groupId>
            <artifactId>struts2-convention-plugin</artifactId>
            <version>2.3.14</version>
        </dependency>
        <dependency>
            <groupId>org.apache.struts</groupId>
            <artifactId>struts2-dojo-plugin</artifactId>
            <version>2.3.14</version>
        </dependency>
        <dependency>
            <groupId>org.apache.struts</groupId>
            <artifactId>struts-taglib</artifactId>
            <version>1.3.10</version>
        </dependency>
   <dependency>
        <groupId>com.jgeppert.struts2.jquery</groupId>
        <artifactId>struts2-jquery-plugin</artifactId>
        <version>3.7.0</version>
    </dependency>
    <dependency>
        <groupId>com.jgeppert.struts2.jquery</groupId>
        <artifactId>struts2-jquery-grid-plugin</artifactId>
        <version>3.7.0</version>
    </dependency>
    <dependency>
        <groupId>com.jgeppert.struts2.jquery</groupId>
        <artifactId>struts2-jquery-richtext-plugin</artifactId>
        <version>3.7.0</version>
    </dependency>
    <dependency>
        <groupId>com.jgeppert.struts2.jquery</groupId>
        <artifactId>struts2-jquery-tree-plugin</artifactId>
        <version>3.7.0</version>
    </dependency>
    <dependency>
        <groupId>com.jgeppert.struts2.jquery</groupId>
        <artifactId>struts2-jquery-mobile-plugin</artifactId>
        <version>3.7.0</version>
    </dependency>
<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>jsp-api</artifactId>
    <version>2.0</version>
</dependency>
<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>servlet-api</artifactId>
    <version>2.5</version>
</dependency>
<dependency>
    <groupId>org.apache.struts</groupId>
    <artifactId>struts-annotations</artifactId>
    <version>1.0.5</version>
</dependency>
<dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.11</version>
</dependency>
            <dependency>
    <groupId>org.freemarker</groupId>
    <artifactId>freemarker</artifactId>
    <version>2.3.20</version>
</dependency>
          <dependency>
    <groupId>org.apache.velocity</groupId>
    <artifactId>velocity</artifactId>
    <version>1.7</version>
</dependency>

Answer 1

你有依赖问题：

类 TagLibraryDirectiveProvider 存在于 struts2-core jar 中，但在比您声明的 (2.3.8) 更新的版本 (2.3.16) 中： http://struts.apache.org/release/2.3.x/struts2-core/apidocs/org/apache/struts2/views/TagLibraryDirectiveProvider.html

如此简单的升级依赖。

Answer 2

我可以在 Struts2 2.3.14 上使用 jQuery 插件，我只是删除了应用程序的 Target 目录并使用了以下依赖项。

 <dependency>
            <groupId>org.apache.struts</groupId>
            <artifactId>struts2-core</artifactId>
            <version>2.3.14</version>
        </dependency>
        <dependency>
            <groupId>com.jgeppert.struts2.jquery</groupId>
            <artifactId>struts2-jquery-plugin</artifactId>
            <version>3.6.1</version>
        </dependency>
             <dependency>
        <groupId>org.apache.velocity</groupId>
        <artifactId>velocity</artifactId>
        <version>1.7</version>
      </dependency>

Answer 3

/*
 * $Id$
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.struts2.views;

import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.opensymphony.xwork2.util.ValueStack;

/**
 * Provides Velocity implementation classes for a tag library
 */
public interface TagLibraryDirectiveProvider {

    /**
     * Gets a list of Velocity directive classes for the tag library.  Called once on framework
     * startup when initializing Velocity.
     *
     * @return A list of Velocity directive classes
     */
    public List<Class> getDirectiveClasses();

}

还有：

/*
 * $Id: TagLibrary.java 651946 2008-04-27 13:41:38Z apetrelli $
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.struts2.views;

import com.opensymphony.xwork2.util.ValueStack;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Provides Freemarker implementation classes for a tag library
 */
public interface TagLibraryModelProvider {

    /**
     * Gets a Java object that contains getters for the tag library's Freemarker models.
     * Called once per Freemarker template processing.
     *
     * @param stack The current value stack
     * @param req The HTTP request
     * @param res The HTTP response
     * @return The Java object containing the Freemarker model getter methods
     */
    Object getModels(ValueStack stack, HttpServletRequest req, HttpServletResponse res);

}

我编译并将它们添加到我的类文件夹中