JSP自定义业务标签

浏览数：28 / 时间：2015年06月09日

自定义标签：

package cn.hv.tag;

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.tagext.BodyContent;
import javax.servlet.jsp.tagext.BodyTagSupport;

public class BodyTag extends BodyTagSupport {

    private String model;
    private int pc ;

    public int doStartTag() throws JspException {
        JspWriter out = pageContext.getOut();
        return model.equals("yyt") ? super.EVAL_BODY_INCLUDE : super.SKIP_BODY;
    }

    public int doAfterBody() throws JspException {
        if(pc > 0  ){
            pc--;
            return super.EVAL_BODY_AGAIN;
        }
        return super.SKIP_BODY;
    }


    public String getModel() {
        return model;
    }

    public void setModel(String model) {
        this.model = model;
    }

    public int getPc() {
        return pc;
    }

    public void setPc(int pc) {
        this.pc = pc;
    }
    
}

View Code

<?xml version="1.0" encoding="UTF-8"?>  
<!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>c</short-name>  
    <tag>  
        <name>enable</name>  
        <tag-class>cn.hv.tag.BodyTag</tag-class>  
        <body-content>JSP</body-content>  
        <attribute>  
            <name>model</name> 
            <rtexprvalue>true</rtexprvalue>
        </attribute> 
         <attribute>  
            <name>pc</name> 
            <rtexprvalue>true</rtexprvalue>
        </attribute> 
    </tag>  
</taglib>

<jsp-config>
        <taglib>
            <taglib-uri>/web-html</taglib-uri>
            <taglib-location>
                /WEB-INF/web-html.tld
            </taglib-location>
        </taglib>
    </jsp-config>