第一个实例Sling Model+HTL

• @Named可以绑定数据
• 若不绑定用protected Date trainingdate;也是可以的
  下面用getTrainingDate()仍然是可以取到的
• 奇葩的是：即便我用的是trainingdate在HTL中写hello.trainingDate也能取到

实则不用@ValueMapValue,@Inject就能注入然后取到值了

package com.xxx.core.models;

@Model(adaptables = Resource.class)
public class GenericPageModel {

    @ValueMapValue(injectionStrategy=InjectionStrategy.OPTIONAL)
    @Named("trainingdate")//节点中为./trainingdate
    protected Date trainingDate;

    public String getTrainingDate(){
        return trainingDate.toString();
    }

}

HTL：
    <meta data-sly-use.hello="com.xxx.core.models.GenericPageModel" name="trainingdate" content="${hello.trainingDate}"/>