taglib实例
taglib的实例：
1 Java文件
/*
* OutputTag.java
*
* Created on 2008年4月13日, 下午10:08
*
* To change this template, choose Tools | Template Manager
* and open the template in the editor.
*/
package
com;
import
javax.servlet.jsp.JspException;
import
javax.servlet.jsp.JspWriter;
import
javax.servlet.jsp.tagext.TagSupport;
/**
* @author chenys
*/
public
class
OutputTag
extends
TagSupport
{
private String name=null;
public void setName(String name)
{
this.name = name;
}
public int doStartTag() throws JspException{
try
{
JspWriter out = pageContext.getOut();
out.print("Hello! " + name);
}
catch (Exception e)
{
throw new JspException(e);
}
return EVAL_PAGE;
}
}
2 配置文件
<?
xml version="1.0" encoding="ISO-8859-1"
?>
<!
DOCTYPE taglib
PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.2//EN"
"http://java.sun.com/dtd/web-jsptaglibrary_1_2.dtd"
>
<
taglib
>
<
tlib-version
>
1.0
</
tlib-version
>
<
jsp-version
>
1.2
</
jsp-version
>
<
short-name
>
tagExample
</
short-name
>
<!--
OutputTag
-->
<
tag
>
<
name
>
out
</
name
>
<
tag-class
>
com.OutputTag
</
tag-class
>
<
body-content
>
empty
</
body-content
>
<
attribute
>
<
name
>
name
</
name
>
<
required
>
false
</
required
>
<
rtexprvalue
>
false
</
rtexprvalue
>
</
attribute
>
</
tag
>
</
taglib
>
3 页面
<%@ page language="java"%>
<%@ taglib uri="/WEB-INF/tlds/test.tld" prefix="tagExample"%>
<html>
<body>
Test Tag:
<tagExample:out name="haha"/>
</body>
</html>
运行结果：
Test Tag: Hello! haha
1 Java文件
/*
* OutputTag.java * * Created on 2008年4月13日, 下午10:08 * * To change this template, choose Tools | Template Manager * and open the template in the editor. */
package
com;
import
javax.servlet.jsp.JspException;
import
javax.servlet.jsp.JspWriter;
import
javax.servlet.jsp.tagext.TagSupport;
/** * @author chenys */
public
class
OutputTag
extends
TagSupport
{ private String name=null; public void setName(String name) {
this.name = name; } public int doStartTag() throws JspException{ try { JspWriter out = pageContext.getOut(); out.print("Hello! " + name); } catch (Exception e) { throw new JspException(e); } return EVAL_PAGE; }}
2 配置文件
<?
xml version="1.0" encoding="ISO-8859-1"
?>
<!
DOCTYPE taglib PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.2//EN" "http://java.sun.com/dtd/web-jsptaglibrary_1_2.dtd"
>
<
taglib
>
<
tlib-version
>
1.0
</
tlib-version
>
<
jsp-version
>
1.2
</
jsp-version
>
<
short-name
>
tagExample
</
short-name
>
<!--
OutputTag
-->
<
tag
>
<
name
>
out
</
name
>
<
tag-class
>
com.OutputTag
</
tag-class
>
<
body-content
>
empty
</
body-content
>
<
attribute
>
<
name
>
name
</
name
>
<
required
>
false
</
required
>
<
rtexprvalue
>
false
</
rtexprvalue
>
</
attribute
>
</
tag
>
</
taglib
>
3 页面
<%@ page language="java"%>
<%@ taglib uri="/WEB-INF/tlds/test.tld" prefix="tagExample"%>
<html>
<body>
Test Tag:
<tagExample:out name="haha"/>
</body>
</html>
运行结果：
Test Tag: Hello! haha