Kau*_*hal 4 jsf facelets jsf-2
是否可以创建自定义JSF核心Facelet组件.喜欢的东西<custom:composition>的<ui:composition>,或者<custom:include>用于<ui:include>
这将是有益的,如果有人能告诉我涉及的步骤.
提前致谢,
Kaushal
Bal*_*usC 16
它实质上是标签处理程序.即延伸的类TagHandler.
这是一个Hello World标记处理程序.
com.example.HelloTagHandler
public class HelloTagHandler extends TagHandler {
public HelloTagHandler(TagConfig config) {
super(config);
}
@Override
public void apply(FaceletContext context, UIComponent parent) throws IOException {
// Do your job here. This example dynamically adds another component to the parent.
if (ComponentHandler.isNew(parent)) {
UIOutput child = new HtmlOutputText();
child.setValue("Hello World");
parent.getChildren().add(child);
}
nextHandler.apply(context, parent); // Delegate job further to first next tag in tree hierarchy.
}
}
/WEB-INF/my.taglib.xml
<?xml version="1.0" encoding="UTF-8"?>
<facelet-taglib
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-facelettaglibrary_2_0.xsd"
version="2.0"
>
<namespace>http://example.com/my</namespace>
<tag>
<tag-name>hello</tag-name>
<handler-class>com.example.HelloTagHandler</handler-class>
</tag>
</facelet-taglib>
/WEB-INF/web.xml(注意:当my.taglib.xml在/META-INFJAR文件的文件夹中时,这部分不是必需的,/WEB-INF/lib就像JSF组件库一样):
<context-param>
<param-name>javax.faces.FACELETS_LIBRARIES</param-name>
<param-value>/WEB-INF/my.taglib.xml</param-value>
</context-param>
用法 /some.xhtml
<html ... xmlns:my="http://example.com/my">
...
<my:hello />
要查看钻嘴鱼科执行的源代码<ui:composition>,并<ui:include>单击链接.
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