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JSP Web 脚本 XML SUN

test.jsp
<%@ page contentType="text/html;charset=GB2312" language="java" %>
<%@ taglib prefix="mytag" uri="/WEB-INF/jsp2/jsp2-example-taglib.tld" %>
<%@ taglib prefix="tags" tagdir="/WEB-INF/tags" %>
<%--<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>--%>
<html>
<head><title>Simple jsp page</title></head>

<body>

<p><B>My first tag prints</B>:
    <mytag:hello/>
    <br>
</p>

<H2>News Portal: Another Tag File Example</H2>
<TABLE border="0">
    <TR valign="top">
        <TD><tags:display color="#ff0000" bgcolor="#ffc0c0" title="Travel"> Last
            French Concorde Arrives in NY<br/> Another Travel Headline<br/> Yet
            Another Travel Headline<br/> </tags:display></TD>
        <TD><tags:display color="#00fc00" bgcolor="#c0ffc0" title="Technology">
            Java for in-flight entertainment<BR> Another Technology Headline<BR>
            Another Technology Headline<BR> </tags:display></TD>
        <TD><tags:display color="#ffcc11" bgcolor="#ffffcc" title="Sports">
            American Football<BR/> NBA<BR/> Soccer<BR/> </tags:display></TD>
    </TR>
</TABLE>

<HR>
<%--<c:set var="times" value="5"/>--%>
<p><B>Reminder:</B></p><br>
<%--<mytag:iteration times="${times}">
    This is the ${sequence} Of ${times} times of reminder<br>
</mytag:iteration>--%>

<br>
<mytag:loop counts="5">
    现在时间是：<%=new java.util.Date().toString()%><br>
</mytag:loop>
<br>

<mytag:HTMLEncode>
<Hello , Simple sample>
</mytag:HTMLEncode>

</body>
</html>

BodyTagExample.java
public class BodyTagExample
        extends BodyTagSupport
{
    private int counts;

    public BodyTagExample()
    {
        super();
    }

    public void setCounts( int counts )
    {
        this.counts = counts;
    }

    public int doStartTag() throws JspTagException
    {
        System.out.println( "doStartTag..." );
        if ( counts > 0 )
        {
            return EVAL_BODY_INCLUDE;
        }
        else
        {
            return SKIP_BODY;
        }
    }

    public void setBodyContent( BodyContent bodyContent )
    {
        System.out.println( "setBodyContent..." );
        this.bodyContent = bodyContent;
    }

    public void doInitBody() throws JspTagException
    {
        System.out.println( "doInitBody...." );
    }

    public int doAfterBody() throws JspTagException
    {
        System.out.println( "do After body..." + counts );
        if ( counts > 1 )
        {
            counts--;
            return EVAL_BODY_AGAIN; //EVAL_PAGE;
        }
        else
        {
            return SKIP_BODY;
        }
    }

    public int doEndTag() throws JspTagException
    {
        System.out.println( "do end Tag..." );
        try
        {
            if ( bodyContent != null )
            {
                bodyContent.writeOut( bodyContent.getEnclosingWriter() );
            }
        }
        catch ( java.io.IOException e )
        {
            throw new JspTagException( "IO Error:" + e.getMessage() );
        }
        return EVAL_PAGE;
    }
}

HelloTag.java
public class HelloTag extends SimpleTagSupport
{
    public void doTag() throws JspException, IOException
    {
        getJspContext().getOut().write( "This is my first tag!" );
    }
}

jsp2-example-taglib.tld
<?xml version="1.0" encoding="GB2312" ?>

<taglib xmlns="http://java.sun.com/xml/ns/j2ee"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-jsptaglibrary_2_0.xsd"
        version="2.0">

    

    <description>jsp2 Simpletag Library</description>
    <display-name>Simpletag</display-name>
    <tlib-version>1.1</tlib-version>
    <short-name>tag</short-name>
    

    <tag>
        <description>Prints this is my first tag</description>
        <name>hello</name>
        <tag-class>jsp2.examples.simpletag.HelloTag</tag-class>
        <body-content>empty</body-content>
    </tag>

    <tag>
        <name>iteration</name>
        <tag-class>jsp2.examples.simpletag.IterationSimpleTag</tag-class>
        
        <body-content>JSP</body-content>
        
        
        <variable>
            <description>Current iterationnumber</description>
            <name-given>sequence</name-given>
        </variable>
        <attribute>
            <name>times</name>
            <required>true</required>
            <rtexprvalue>true</rtexprvalue>
        </attribute>
    </tag>

    
    

    <tag>
        <name>loop</name>
        <tag-class>jsp2.examples.simpletag.BodyTagExample</tag-class>
        <body-content>JSP</body-content>
        <attribute>
            <name>counts</name>
            <required>true</required>
            <rtexprvalue>true</rtexprvalue>
        </attribute>
    </tag>

    
    <tag>
        <name>HTMLEncode</name>
        <tag-class>TransformerTag.HTML_FormatTag</tag-class>
        <body-content>JSP</body-content>
    </tag>

</taglib>

display.tag
<%@ attribute name="color" %>
<%@ attribute name="bgcolor" %>
<%@ attribute name="title" %>
<TABLE border="0" bgcolor="${color}">
<TR>
    <TD><B>${title}</B></TD>
</TR>
<TR>
    <TD bgcolor="${bgcolor}">
        <jsp:doBody/>
    </TD>
</TR>
</TABLE>

greetings.tag
Hello there. How are you doing?

web.xml
<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
         version="2.4">

    <display-name>tag-jsp</display-name>

    <jsp-config>
        <jsp-property-group>
            <description>JSP Configurations</description>
            <display-name>JSPConfig</display-name>
            <url-pattern>*.jsp</url-pattern>
            <el-ignored>false</el-ignored>
            <page-encoding>GBK</page-encoding>
            <scripting-invalid>false</scripting-invalid>
        </jsp-property-group>
    </jsp-config>

    <welcome-file-list>
        <welcome-file>/test.jsp</welcome-file>
    </welcome-file-list>
</web-app>

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