[英]Dynamic attributes in a jsp tag
I want to have a tag with dynamic attributes, like simple html tags, eg something like this: 我想要一个带有动态属性的标签, 比如简单的html标签, 例如 :
<tags:superTag dynamicAttribute1="value" someOtherAttribute="valueOfSomeOther"/>
And in my implementation of tag I want to have something like this: 在我的标签实现中我希望有这样的东西:
public class DynamicAttributesTag {
private Map<String,String> dynamicAttributes;
public Map<String, String> getDynamicAttributes() {
return dynamicAttributes;
}
public void setDynamicAttributes(Map<String, String> dynamicAttributes) {
this.dynamicAttributes = dynamicAttributes;
}
@Override
protected int doTag() throws Exception {
for (Map.Entry<String, String> dynamicAttribute : dynamicAttributes.entrySet()) {
// do something
}
return 0;
}
}
I want to point out that these dynamic attributes are going to be written by hands in a jsp, not just passed as Map like ${someMap}
. 我想指出这些动态属性将由jsp中的手写入,而不是像
${someMap}
那样传递给Map。 So is there any way to achieve this? 有没有办法实现这个目标?
You will have to enable dynamic attributes in your TLD, like so: 您必须在TLD中启用动态属性,如下所示:
<tag>
...
<dynamic-attributes>true</dynamic-attributes>
</tag>
And then have your tag handler class implement the DynamicAttributes
interface: 然后让您的标记处理程序类实现
DynamicAttributes
接口:
public class DynamicAttributesTag extends SimpleTagSupport implements DynamicAttributes {
...
public void setDynamicAttribute(String uri, String localName, Object value) throws JspException {
// This gets called every time a dynamic attribute is set
// You could add the (localName,value) pair to your dynamicAttributes map here
}
...
}
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.