下面是我自己定义的标签mycontent_list
首先,在数据库里创建了一个jc_mycontent的表,其中有id,title,content三个字段
其次,创建了一个实体类
|
1
2
3
4
5
6
7
8
|
public class MyContent {private static final long serialVersionUID = 1L;private Integer id;private String title;private String content;public MyContent () {super();} |
……get set方法
}
接下来是配置hibernate中jc_mycontent表的配置文件
|
1
2
3
4
5
6
7
8
9
10
11
|
<?xml version="1.0"?><!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"><hibernate-mapping package="com.jeecms.cms.entity.main"><class name="MyContent" table="jc_mycontent"><meta attribute="sync-DAO">false</meta><cache usage="read-write"/><id name="id" type="java.lang.Integer" column="id"><generator class="identity"/></id><property name="title" column="title" type="java.lang.String" not-null="true" /><property name="content" column="content" type="java.lang.String" not-null="true" /></class></hibernate-mapping> |
与数据库交互的持久层接口
|
1
2
3
|
public interface MyContentDao {public List<MyContent> getList();} |
持久层实现类
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
|
@Repository//持久层public class MyContentDaoImpl extends HibernateBaseDao<MyContent, Integer>implements MyContentDao {@SuppressWarnings("unchecked")public List<MyContent> getList(){return find(byNothing());}private Finder byNothing(){Finder f = Finder.create();f.append("from MyContent");//可以在此处添加查询条件或者添加各种方法进行动态查询f.setCacheable(true);return f;}@Overrideprotected Class<MyContent> getEntityClass() {return MyContent.class;}} |
业务层接口
public interface MyContentMng {
public List<MyContent> getList();
}
业务层实现类
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
|
@Service//业务层@Transactionalpublic class MyContentMngImpl implements MyContentMng {@Transactional(readOnly = true)//配置事务为只读public List<MyContent> getList(){return myContentDao.getList();}private MyContentDao myContentDao;@Autowired//自动绑定public void setMyContentDao(MyContentDao myContentDao) {this.myContentDao = myContentDao;}private List<ContentListener> listenerList;@Autowiredpublic void setListenerList(List<ContentListener> listenerList) {this.listenerList = listenerList;}} |
标签类的抽象类,最主要的就是getData这个方法,以及绑定业务层,其中可以添加多种查询方法。可参考类AbstractContentDirective
|
1
2
3
4
5
6
7
8
9
|
public abstract class AbstractMyContentDirective implementsTemplateDirectiveModel {protected Object getData(Map<String, TemplateModel> params, Environment env)throws TemplateException {return myContentMng.getList();}@Autowiredprotected MyContentMng myContentMng;} |
自定义标签中最重要的类继承上边的抽象类
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
|
public class MyContentListDirective extends AbstractMyContentDirective {/** * 模板名称 */public static final String TPL_NAME = "mycontent_list";@SuppressWarnings("unchecked")public void execute(Environment env, Map params, TemplateModel[] loopVars,TemplateDirectiveBody body) throws TemplateException, IOException {//获取站点CmsSite site = FrontUtils.getSite(env);//获取内容列表List<MyContent> list = getList(params, env);Map<String, TemplateModel> paramWrap = new HashMap<String, TemplateModel>(params);//OUT_LIST值为tag_list,将内容列表放入其中paramWrap.put(MYOUT_LIST, DEFAULT_WRAPPER.wrap(list));//将params的值复制到variable中Map<String, TemplateModel> origMap = DirectiveUtils.addParamsToVariable(env, paramWrap);//没有采用默认的模板,直接采用自己写的简单的模板(mycontent_list.html)FrontUtils.includeTpl(TPL_NAME, site, params, env);//将variable中的params值移除DirectiveUtils.removeParamsFromVariable(env, paramWrap, origMap);}protected List<MyContent> getList(Map<String, TemplateModel> params,Environment env) throws TemplateException {return myContentMng.getList();}} |
样式模板mycontent_list.html内容,里边可以自己添加一些样式,可参考 cms_sys_definedstyle_list下样式文件
[#list mytag_list as a]
<li><a href="${a.title}"><font color='blue'>"${a.content}"</font></a></li>
[/#list]
首页里加入如下代码
[@cms_mycontent_list]
<ul class="topnews">
</ul>
[/@cms_mycontent_list]
通过以上这些代码,可以实现将自己的表jc_mycontent中的数据查询并显示在页面上