问题描述
我想将参数从html传递给WCMUse类。
I wanted to pass a parameter from html to WCMUse class.
Java：
public class ComponentHelper extends WCMUse {
public void activate() throws Exception {}
...
public String methodA(String parameter1) {
...
}
public String getParam() {
String param = "";
...
return param;
}
}
HTML：
<componentHelper data-sly-use.componentHelper="ComponentHelper" data-sly-unwrap />
...
<div>
${componentHelper.methodA @ parameter1=componentHelper.param}
<!--/* Also tried: ${componentHelper.methodA @ componentHelper.param} */-->
</div>
很遗憾，我似乎无法将任何参数传递给该方法。有什么方法可以将参数从html传递给WCMUse类？
Unfortunately, it looks like I can't pass any parameter into the method. Is there any way to pass a parameter to WCMUse class from html?
推荐答案
Java Use-API不支持将参数传递给吸气方法。您可以在Use类初始化期间传递一次参数。看一下受：
Java Use-API doesn't support passing parameters to the getter method. You may pass parameters once, during the Use class initialization. Take a look on this example inspired by the Sightly documentation:
<!-- info.html -->
<div data-sly-use.info="${'Info' @ text='Some text'}">
<p>${info.reversed}</p>
</div>
Java代码：
// Info.java
public class Info extends WCMUse {
private String reversed;
@Override
public void activate() throws Exception {
String text = get("text", String.class);
reversed = new StringBuilder(text).reverse().toString();
}
public String getReversed() {
return reversed;
}
}
这类参数仅在Use类时才有意义是从 data-sly-template 元素调用的（否则参数也可以在Use类中进行硬编码）。可以在。
Such kind of parameters makes sense only when the Use class is invoked from data-sly-template elements (otherwise parameters could be as well hardcoded in Use class). More info can be found in the following chapter of aferomentioned documentation.
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