[原创]JEECMS 自定义标签调用广告版位下的所有广告(利用广告管理管理首页幻灯片)...

末蓝、 2021-11-14 14:20 251阅读 0赞

[转载：https://www.cnblogs.com/jifeng/p/4117709.html][https_www.cnblogs.com_jifeng_p_4117709.html]

EECMS自带的只有\[@cms\_advertising\]标签，并且官方没有给文档，用法:

\[@cms\_advertising id='3'\]   
            <img src="$\{(tag\_bean.attr.image\_url)!?html\}" width="$\{(tag\_bean.attr.image\_width)!?html\}" height="$\{(tag\_bean.attr.image\_height)!?html\}" />   
 \[/@cms\_advertising\]

这个是根据广告ID的来调用单独的一条广告，首页幻灯片一般都有多张，不能满足需求。

其实jeecms也有另一个js调用已经实现了的，但是不能生成到html中，用户体验不好。（com.jeecms.cms.action.front.AdvertisingAct类，<script src="/ad.jspx"  ……）

回到正题，自己增加一个标签，名字叫做：cms\_advertising\_space

步骤一：

jeecms-context.xml中增加一个bean：

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> 
    <div>
      2 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>&lt;!-- 新增按照广告牌取所有广告标签 --&gt;</code> 
     </div> 
     <div> 
      <code>&lt;</code> 
      <code>bean</code>&nbsp; 
      <code>id="cms_advertising_space" class="com.jeecms.cms.action.directive.CmsAdvertisingSpaceDirective"/&gt;</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

步骤二：

jeecms.properties添加cms\_advertising\_space标签

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>directive.cms_advertising_space=cms_advertising_space</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

步骤三：

新增一个类：CmsAdvertisingSpaceDirective

![复制代码][copycode.gif]

package com.jeecms.cms.action.directive;
    
    import static com.jeecms.common.web.freemarker.DirectiveUtils.OUT_BEAN;
    import static freemarker.template.ObjectWrapper.DEFAULT_WRAPPER;
    
    import java.io.IOException;
    import java.util.HashMap;
    import java.util.List;
    import java.util.Map;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import static com.jeecms.common.web.freemarker.DirectiveUtils.OUT_LIST;
    import com.jeecms.cms.entity.assist.CmsAdvertising;
    import com.jeecms.cms.entity.assist.CmsAdvertisingSpace;
    import com.jeecms.cms.manager.assist.CmsAdvertisingMng;
    import com.jeecms.cms.manager.assist.CmsAdvertisingSpaceMng;
    import com.jeecms.common.web.freemarker.DirectiveUtils;
    
    import freemarker.core.Environment;
    import freemarker.template.TemplateDirectiveBody;
    import freemarker.template.TemplateDirectiveModel;
    import freemarker.template.TemplateException;
    import freemarker.template.TemplateModel;
    
    /**
     * 广告对象标签
     */
    public class CmsAdvertisingSpaceDirective implements TemplateDirectiveModel {
        /**
         * 输入参数，广告ID。
         */
        public static final String PARAM_ID = "id";
    
    
        @SuppressWarnings("unchecked")
        public void execute(Environment env, Map params, TemplateModel[] loopVars,
                TemplateDirectiveBody body) throws TemplateException, IOException {
            Integer id = DirectiveUtils.getInt(PARAM_ID, params);
            List<CmsAdvertising> ads = null;
            CmsAdvertisingSpace adspace;
            if (id != null) {
                
                //ad = cmsAdvertisingMng.findById(id);
                ads= cmsAdvertisingMng.getList(id, true);
            }
            Map<String, TemplateModel> paramWrap = new HashMap<String, TemplateModel>(
                    params);
            if (ads!=null){
                paramWrap.put(OUT_LIST, DEFAULT_WRAPPER.wrap(ads));
            }
            
            Map<String, TemplateModel> origMap = DirectiveUtils
                    .addParamsToVariable(env, paramWrap);
            body.render(env.getOut());
            DirectiveUtils.removeParamsFromVariable(env, paramWrap, origMap);
        }
    
        @Autowired
        private CmsAdvertisingMng cmsAdvertisingMng;
        @Autowired
        private CmsAdvertisingSpaceMng cmsAdvertisingSpaceMng;
    }

![复制代码][copycode.gif]

标签写法：

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> 
    <div>
      2 
    </div> 
    <div>
      3 
    </div> 
    <div>
      4 
    </div> 
    <div>
      5 
    </div> 
    <div>
      6 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>[@cms_advertising_space id='7']</code> 
     </div> 
     <div> 
      <code>[#list tag_list as c]</code> 
     </div> 
     <div>
       &nbsp; 
     </div> 
     <div> 
      <code>&lt;</code> 
      <code>img</code>&nbsp; 
      <code>src="${(c.attr.image_url)!?html}" width="${(c.attr.image_width)!?html}" height="${(c.attr.image_height)!?html}" /&gt;</code> 
     </div> 
     <div> 
      <code>[/#list]&nbsp;&nbsp;&nbsp;</code> 
     </div> 
     <div> 
      <code>&nbsp;</code> 
      <code>[/@cms_advertising_space]</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

生成代码：

<table> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      1 
    </div> 
    <div>
      2 
    </div> 
    <div>
      3 
    </div> </td> 
   <td> 
    <div> 
     <div> 
      <code>&lt;</code> 
      <code>img</code>&nbsp; 
      <code>src="http://127.0.0.1:8080/r/cms/kingyon_zh/uploads/7-140611092P2415.jpg" width="" height="" /&gt;</code> 
     </div> 
     <div>
       &nbsp; 
     </div> 
     <div> 
      <code>&lt;</code> 
      <code>img</code>&nbsp; 
      <code>src="http://127.0.0.1:8080/r/cms/kingyon_zh/uploads/3-140611092P2415.jpg" width="" height="" /&gt;</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

转载于:https://www.cnblogs.com/Jeely/p/11195024.html

[https_www.cnblogs.com_jifeng_p_4117709.html]: https://www.cnblogs.com/jifeng/p/4117709.html
[copycode.gif]: /images/20211114/4d2b52fb69ab4e70aa2aa8b9d45927db.png