Question

众所周知，在{2.}} grails 2.3.x之后已经弃用了org.codehaus.groovy.grails.commons.ApplicationHolder类。但是有许多插件使用它。在我的一个应用程序中，我碰巧使用了https://grails.org/plugin/excel-import?skipRedirect=true，它被弃用了，并且grails 2.4没有等价物（尽管有一个用于grails 3）。我的应用程序使用此插件，我宁愿不必折射它使用最新版本。那么有没有办法让org.codehaus.groovy.grails.commons.ApplicationHolder解析为Holders.grailsApplication？

我已经在src / java文件夹中创建了一个org.codehaus.groovy.grails.commons.ApplicationHolder，其中包含以下内容：

/*
 * Copyright 2004-2005 the original author or authors.
 *
 * Licensed 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.codehaus.groovy.grails.commons;

import grails.util.GrailsUtil;
import grails.util.Holders;

/**
 * Static singleton holder for the GrailsApplication instance.
 *
 * @author Marc Palmer (marc@anyware.co.uk)
 *
 * @deprecated Use dependency injection or implement GrailsApplicationAware instead
 */
@Deprecated
public abstract class ApplicationHolder {

    /**
     * @return The GrailsApplication instance
     * @deprecated Use dependency injection instead
     */
    @Deprecated
    public static GrailsApplication getApplication() {
        GrailsUtil.deprecated("Method ApplicationHolder.getApplication() is deprecated and will be removed in a future version of Grails.");
        return Holders.getGrailsApplication();
    }

    /**
     * @param application The application to set
     * @deprecated Use dependency injection instead
     */
    @Deprecated
    public static void setApplication(GrailsApplication application) {
        Holders.setGrailsApplication(application);
    }
}

但是当我运行项目时，我得到了这个错误：

..myapproot\target\work\plugins\excel-import-1.0.0\grails-app\services\org\grails\plugins\excelimport\ExcelImportService.groovy: 13: unable to resolve class org.codehaus.groovy.grails.commons.ApplicationHolder
 @ line 13, column 1.
   import org.codehaus.groovy.grails.commons.ApplicationHolder
   ^

1 error

所以不确定如何让excel-import插件使用这个类（因为它无法从我的应用程序使用的grails 2.4.4中找到ApplicationHolder类）？

修改我甚至尝试用grails命令行而不是intellij运行。结果相同！

Answer 1

那么有没有办法让... org.codehaus.groovy.grails.commons.ApplicationHolder解析为 Holders.grailsApplication？

如果您确实需要使用旧版本的插件，那么一个hackus-majoris就是在ApplicationHolder（或src/groovy/org/codehaus/groovy/grails/commons/ApplicationHolder.groovy）下添加您自己的.java课程。

来自src / java的Grails 2.x类无法在插件中解析

1 个答案: