檢視JEECMS的原始碼發現開發者版本還沒有類似現成的統計標籤，一種解決的辦法是使用現有的JEECMS標籤，像這樣Struts( [@cms_content_list channel=id]${tag_list?size}[/@cms_content_list]) ，但是這樣的做法非常地低效，原因是[@cms_content_list]標籤會把所有當前欄目的文章內容物件查詢出來，做全表查詢！

為了網站訪問效率，只好自己寫一個統計標籤[@cms_channel_statistic]為例說下如何在JEECMS加入自定義標籤。

第一步：編寫裝載統計資訊的Entity。

/** 
 * 頻道統計實體類 
 * @author www.javake.net 
 */  
public class ChannelStatistics {  
    /** 
     * 文章總數 
     */  
    private long contentAllCount;  
    /** 
     * 待稽核文章總數 
     */  
    private long contentCheckingCount;  
    /** 
     * 評論總數 
     */  
    private long commentCount;  
    /** 
     * 閱讀總數 
     */  
    private long viewCount;  
    public long getContentAllCount() {  
        return contentAllCount;  
    }  
    public void setContentAllCount(long contentAllCount) {  
        this.contentAllCount = contentAllCount;  
    }  
    public long getContentCheckingCount() {  
        return contentCheckingCount;  
    }  
    public void setContentCheckingCount(long contentCheckingCount) {  
        this.contentCheckingCount = contentCheckingCount;  
    }  
    public long getCommentCount() {  
        return commentCount;  
    }  
    public void setCommentCount(long commentCount) {  
        this.commentCount = commentCount;  
    }  
    public long getViewCount() {  
        return viewCount;  
    }  
    public void setViewCount(long viewCount) {  
        this.viewCount = viewCount;  
    }  
}  
 

第二步：編寫欄目資訊統計的Dao介面。暫時只實現文章總數統計，待稽核文章統計，評論總數cop

/** 
 * 欄目資訊統計Dao介面 
 * @author www.javake.net 
 */  
public interface CmsChannelStatisticDao {  
    /** 
     * 當前欄目文章統計 
     * @param restrictions 
     * @return 
     */  
    public long contentStatistic(Map<String, Object> restrictions);  
    /** 
     * 當前欄目待稽核文章統計 
     * @param restrictions 
     * @return 
     */  
    public long contentCheckingStatistic(Map<String, Object> restrictions);  
    /** 
     * 當前欄目評論統計 
     * @param restrictions 
     * @return 
     */  
    public long commentStatistic(Map<String, Object> restrictions);  
}  
 

第三步：編寫Dao介面的實現。

/** 
 * 欄目資訊統計Dao實現類 
 * @author www.javake.net 
 */  
import static com.jeecms.cms.entity.main.Content.ContentStatus.passed;  
import static com.jeecms.cms.entity.main.Content.ContentStatus.prepared;  
import static com.jeecms.cms.entity.main.Content.ContentStatus.rejected;  
import static com.jeecms.cms.statistic.CmsStatistic.CHANNELID;  
import static com.jeecms.cms.statistic.CmsStatistic.ISREPLYED;  
import static com.jeecms.cms.statistic.CmsStatistic.SITEID;  
import java.util.Map;  
import org.springframework.stereotype.Repository;  
import com.jeecms.cms.entity.main.Content.ContentStatus;  
import com.jeecms.common.hibernate3.Finder;  
import com.jeecms.common.hibernate3.HibernateSimpleDao;  
@Repository  
public class CmsChannelStatisticDaoImpl extends HibernateSimpleDao  
            implements CmsChannelStatisticDao{  
    /** 
     * 獲取文章總數 
     */  
    public long contentStatistic(Map<String, Object> restrictions) {  
        Finder f = createCacheableFinder("select count(*) from Content bean");  
        Integer channelId = (Integer) restrictions.get(CHANNELID);  
        if (channelId != null) {  
            f.append(" join bean.channel channel,Channel parent");  
            f.append(" where channel.lft between parent.lft and parent.rgt");  
            f.append(" and channel.site.id=parent.site.id");  
            f.append(" and parent.id=:parentId");  
            f.setParam("parentId", channelId);  
        } else {  
            f.append(" where bean.site.id=:siteId").setParam("siteId",  
                    restrictions.get(SITEID));  
        }  
        return (Long) find(f).iterator().next();  
    }  
      
    private long contentStatistic(Map<String, Object> restrictions,ContentStatus status) {  
        Finder f = createCacheableFinder("select count(*) from Content bean");  
        if (prepared == status || passed == status || rejected == status) {  
            f.append(" join bean.contentCheckSet check");  
        }  
        Integer channelId = (Integer) restrictions.get(CHANNELID);  
        if (channelId != null) {  
            f.append(" join bean.channel channel,Channel parent");  
            f.append(" where channel.lft between parent.lft and parent.rgt");  
            f.append(" and channel.site.id=parent.site.id");  
            f.append(" and parent.id=:parentId");  
            f.setParam("parentId", channelId);    
        } else {  
            f.append(" where bean.site.id=:siteId").setParam("siteId",  
                    restrictions.get(SITEID));  
        }  
        if (prepared == status || passed == status) {  
            f.append(" and check.rejected=false");  
        } else if (rejected == status) {  
            f.append(" and check.rejected=true");  
        }  
        return (Long) find(f).iterator().next();  
    }  
      
    /** 
     * 待稽核文章總數 
     * @param restrictions 
     * @param status 
     * @return 
     */  
    public long contentCheckingStatistic(Map<String, Object> restrictions) {  
        return contentStatistic(restrictions,ContentStatus.prepared);  
    }  
    public long commentStatistic(Map<String, Object> restrictions) {  
        Finder f = createCacheableFinder("select count(*) from CmsComment bean ");  
        Integer channelId = (Integer) restrictions.get(CHANNELID);  
        if (channelId != null) {  
            f.append(" join bean.channel channel,Channel parent");  
            f.append(" where channel.lft between parent.lft and parent.rgt");  
            f.append(" and channel.site.id=parent.site.id");  
            f.append(" and parent.id=:parentId");  
            f.setParam("parentId", channelId);    
        } else {  
            f.append(" where bean.site.id=:siteId").setParam("siteId",  
                    restrictions.get(SITEID));  
        }  
        Boolean isReplyed = (Boolean) restrictions.get(ISREPLYED);  
        if (isReplyed != null) {  
            if (isReplyed) {  
                f.append(" and bean.replayTime is not null");  
            } else {  
                f.append(" and bean.replayTime is null");  
            }  
        }  
        return (Long) find(f).iterator().next();  
    }  
      
    private Finder createCacheableFinder(String hql) {  
        Finder finder = Finder.create(hql);  
        finder.setCacheable(true);  
        return finder;  
    }  
}  
 

第四步：編寫欄目統計的FreeMarker標籤類。這裡可以輸入兩個引數，一個是id(欄目id),一個是siteId（站點id）。這兩個引數可在使用標籤的時候輸入。

/** 
 * 欄目統計 
 * @author www.javake.net 
 */  
import static com.jeecms.common.web.freemarker.DirectiveUtils.OUT_BEAN;  
import static freemarker.template.ObjectWrapper.DEFAULT_WRAPPER;  
import static com.jeecms.cms.statistic.CmsStatistic.SITEID;  
import static com.jeecms.cms.statistic.CmsStatistic.ISREPLYED;  
import static com.jeecms.cms.statistic.CmsStatistic.USERID;  
import static com.jeecms.cms.statistic.CmsStatistic.CHANNELID;  
import java.io.IOException;  
import java.util.HashMap;  
import java.util.Map;  
import org.springframework.beans.factory.annotation.Autowired;  
import com.jeecms.cms.entity.main.ChannelStatistics;  
import com.jeecms.cms.entity.main.CmsSite;  
import com.jeecms.cms.statistic.CmsChannelStatisticDao;  
import com.jeecms.cms.web.FrontUtils;  
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;  
public class CmsChannelStatisticsDirective implements TemplateDirectiveModel{  
    /** 
     * 輸入引數，站點ID。存在時，獲取該站點欄目，不存在時獲取當前站點欄目。 
     */  
    public static final String PARAM_SITE_ID = "siteId";  
    /** 
     * 輸入引數，欄目ID。 
     */  
    public static final String PARAM_ID = "id";  
    @SuppressWarnings("unchecked")  
    public void execute(Environment env, Map params, TemplateModel[] loopVars,  
            TemplateDirectiveBody body) throws TemplateException, IOException {  
        CmsSite site = FrontUtils.getSite(env);  
        Integer id = DirectiveUtils.getInt(PARAM_ID, params);  
        ChannelStatistics statistics = null;  
        Map<String,Object> restrictions = new HashMap<String,Object>();  
        Integer siteId = DirectiveUtils.getInt(PARAM_SITE_ID, params);  
        if (siteId == null) {  
            siteId = site.getId();  
        }  
        if (id != null ) {  
            restrictions.put(CHANNELID, id);          
        } else {  
            restrictions.put(SITEID, siteId);  
        }  
        long contentCount = channelSatistic.contentStatistic(restrictions);  
        long contentCheckingCount = channelSatistic.contentCheckingStatistic(restrictions);  
        long commentCount = channelSatistic.commentStatistic(restrictions);  
          
        statistics = new ChannelStatistics();  
        statistics.setCommentCount(commentCount);  
        statistics.setContentAllCount(contentCount);  
        statistics.setContentCheckingCount(contentCheckingCount);  
          
        Map<String, TemplateModel> paramWrap = new HashMap<String, TemplateModel>(  
                params);  
        paramWrap.put(OUT_BEAN, DEFAULT_WRAPPER.wrap(statistics));  
        Map<String, TemplateModel> origMap = DirectiveUtils  
                .addParamsToVariable(env, paramWrap);  
        body.render(env.getOut());  
        DirectiveUtils.removeParamsFromVariable(env, paramWrap, origMap);  
    }  
      
    @Autowired  
    private CmsChannelStatisticDao channelSatistic;  
  
    public void setChannelSatistic(CmsChannelStatisticDao channelSatistic) {  
        this.channelSatistic = channelSatistic;  
    }  
}  

第五步：在jeecms-context.xml檔案中加入CmsChannelStatisticsDirective標籤類的bean注入程式碼。

<!— Author:www.javake.NET -->
<bean id="cms_lucene_page"class="com.jeecms.cms.lucene.LuceneDirectivePage"/>
<bean id="cms_advertising"class="com.jeecms.cms.action.directive.CmsAdvertisingDirective"/>
<bean id="cms_channel_statistic" class="com.jeecms.cms.action.directive.CmsChannelStatisticsDirective"/>
 
<!— Author:www.javake.net -->
<property name="freemarkerVariables">
        <map>
            <entry key="uuid"value-ref="uuid"/>
            <entry key="process_time"value-ref="process_time"/>
            <entry key="text_cut"value-ref="text_cut"/>
            <entry key="html_cut"value-ref="html_cut"/>
            <entry key="cms_pagination"value-ref="cms_pagination"/>
            <entry key="cms_channel_list"value-ref="cms_channel_list"/>
            <entry key="cms_channel_page"value-ref="cms_channel_page"/>
            <entry key="cms_channel"value-ref="cms_channel"/>
            <entry key="cms_content"value-ref="cms_content"/>
            <entry key="cms_content_list"value-ref="cms_content_list"/>
            <entry key="cms_content_page"value-ref="cms_content_page"/>
            <entry key="cms_tag_list"value-ref="cms_tag_list"/>
            <entry key="cms_tag_page"value-ref="cms_tag_page"/>
            <entry key="cms_topic_list"value-ref="cms_topic_list"/>
            <entry key="cms_topic_page"value-ref="cms_topic_page"/>
            <entry key="cms_comment_list"value-ref="cms_comment_list"/>
            <entry key="cms_comment_page"value-ref="cms_comment_page"/>
            <entry key="cms_guestbook_ctg_list"value-ref="cms_guestbook_ctg_list"/>
            <entry key="cms_guestbook_list"value-ref="cms_guestbook_list"/>
            <entry key="cms_guestbook_page"value-ref="cms_guestbook_page"/>
            <entry key="cms_vote"value-ref="cms_vote"/>
            <entry key="cms_friendlink_ctg_list"value-ref="cms_friendlink_ctg_list"/>
            <entry key="cms_friendlink_list"value-ref="cms_friendlink_list"/>
            <entry key="cms_lucene_list"value-ref="cms_lucene_list"/>
            <entry key="cms_lucene_page"value-ref="cms_lucene_page"/>
            <entry key="cms_advertising"value-ref="cms_advertising"/>
            <entry key="cms_channel_statistic" value-ref="cms_channel_statistic"/>
            </map>
        </property>
 

第六步：在jeecms-servlet-front.xml檔案中配置

<!— Author:www.javake.Net -->
<bean id="freemarkerConfig"class="org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer">
        <property name="freemarkerVariables">
            <map>
            <entry key="uuid"value-ref="uuid"/>
            <entry key="process_time"value-ref="process_time"/>
            <entry key="text_cut"value-ref="text_cut"/>
            <entry key="html_cut"value-ref="html_cut"/>
            <entry key="cms_pagination"value-ref="cms_pagination"/>
            <entry key="cms_channel_list"value-ref="cms_channel_list"/>
            <entry key="cms_channel_page"value-ref="cms_channel_page"/>
            <entry key="cms_channel"value-ref="cms_channel"/>
            <entry key="cms_content"value-ref="cms_content"/>
            <entry key="cms_content_list"value-ref="cms_content_list"/>
            <entry key="cms_content_page"value-ref="cms_content_page"/>
            <entry key="cms_tag_list"value-ref="cms_tag_list"/>
            <entry key="cms_tag_page"value-ref="cms_tag_page"/>
            <entry key="cms_topic_list"value-ref="cms_topic_list"/>
            <entry key="cms_topic_page"value-ref="cms_topic_page"/>
            <entry key="cms_comment_list"value-ref="cms_comment_list"/>
            <entry key="cms_comment_page"value-ref="cms_comment_page"/>
            <entry key="cms_guestbook_ctg_list"value-ref="cms_guestbook_ctg_list"/>
            <entry key="cms_guestbook_list"value-ref="cms_guestbook_list"/>
            <entry key="cms_guestbook_page"value-ref="cms_guestbook_page"/>
            <entry key="cms_vote"value-ref="cms_vote"/>
            <entry key="cms_lucene_list"value-ref="cms_lucene_list"/>
            <entry key="cms_lucene_page"value-ref="cms_lucene_page"/>
            <entry key="cms_friendlink_ctg_list"value-ref="cms_friendlink_ctg_list"/>
            <entry key="cms_friendlink_list"value-ref="cms_friendlink_list"/>
            <entry key="cms_advertising"value-ref="cms_advertising"/>
            <entry key="cms_channel_statistic" value-ref="cms_channel_statistic"/>
            </map>
        </property>

第七步：到目前為止，核心程式碼和配置編寫完畢！可以在欄目模板中使用標籤了！

<!—Author:www.javake.net-->
( [@cms_channel_statisticid=a.id]${tag_bean.contentAllCount}[/@cms_channel_statistic] )