JSP自訂業務標籤

標籤：style   blog   http   color   os   java   io   檔案   ar   

自訂標籤：

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>

 以上就是自訂標籤：

web.xml :配置自訂的標籤檔案

EVAL_BODY_INCLUDE：顯示標籤體內

EVAL_BODY_AGAIN：

SKIP_BODY：

SKIP_PAGE：

 

JSP自訂業務標籤