接口 javax.servlet.jsp.tagext.Tag
的使用

使用 Tag 的软件包

javax.servlet.jsp.tagext	Classes and interfaces for the definition of JavaServer Pages Tag Libraries.
org.apache.jasper.runtime

javax.servlet.jsp.tagext 中 Tag 的使用

javax.servlet.jsp.tagext 中 Tag 的子接口

interface	BodyTag The BodyTag interface extends IterationTag by defining additional methods that let a tag handler manipulate the content of evaluating its body.
interface	IterationTag The IterationTag interface extends Tag by defining one additional method that controls the reevaluation of its body.

实现 Tag 的 javax.servlet.jsp.tagext 中的类

class	BodyTagSupport A base class for defining tag handlers implementing BodyTag.
class	TagAdapter Wraps any SimpleTag and exposes it using a Tag interface.
class	TagSupport A base class for defining new tag handlers implementing Tag.

返回 Tag 的 javax.servlet.jsp.tagext 中的方法

static Tag	TagSupport.findAncestorWithClass(Tag from, Class klass) Find the instance of a given class type that is closest to a given instance.
Tag	TagSupport.getParent() The Tag instance most closely enclosing this tag instance.
Tag	TagAdapter.getParent() Returns the parent of this tag, which is always getAdaptee().getParent().
Tag	Tag.getParent() Get the parent (closest enclosing tag handler) for this tag handler.

参数类型为 Tag 的 javax.servlet.jsp.tagext 中的方法

static Tag	TagSupport.findAncestorWithClass(Tag from, Class klass) Find the instance of a given class type that is closest to a given instance.
void	TagSupport.setParent(Tag t) Set the nesting tag of this tag.
void	TagAdapter.setParent(Tag parentTag) Must not be called.
void	Tag.setParent(Tag t) Set the parent (closest enclosing tag handler) of this tag handler.

org.apache.jasper.runtime 中 Tag 的使用

返回 Tag 的 org.apache.jasper.runtime 中的方法

Tag	PerThreadTagHandlerPool.get(Class handlerClass) Gets the next available tag handler from this tag handler pool, instantiating one if this tag handler pool is empty.

参数类型为 Tag 的 org.apache.jasper.runtime 中的方法

void	PerThreadTagHandlerPool.reuse(Tag handler) Adds the given tag handler to this tag handler pool, unless this tag handler pool has already reached its capacity, in which case the tag handler's release() method is called.