jsp自定義標簽獲取標簽體內容輸出到頁面展示《三》
阿新 • • 發佈：2018-01-26
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1.BodyTag.java
package com.zy.tag; import java.io.IOException; import javax.servlet.jsp.JspException; import javax.servlet.jsp.JspWriter; import javax.servlet.jsp.PageContext; import javax.servlet.jsp.tagext.JspFragment; import javax.servlet.jsp.tagext.SimpleTagSupport; public class BodyTag extendsSimpleTagSupport{ @Override public void doTag() throws JspException, IOException { //獲取標簽體內容對象 JspFragment jb = this.getJspBody(); //獲取PageContext對象 PageContext context= (PageContext) this.getJspContext(); //獲取JspWriter對象 JspWriter out = context.getOut();//將標簽體內容輸出到指定writer對象中，循環5次 for (int i = 0; i < 5; i++) { jb.invoke(out); } out.flush(); super.doTag(); } }
2.bodyTag.tld
<?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>1.0</jsp-version> <short-name>bodyTag</short-name> <uri>http://www.zy.bodyTag</uri> <tag> <name>body</name> <tag-class>com.zy.tag.BodyTag</tag-class> <body-content>scriptless</body-content> </tag> </taglib>
3.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <%@taglib uri="http://www.zy.bodyTag" prefix="bodyTag" %> <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>首頁</title> </head> <body background="../img/body-bg.png"> <hr/> <bodyTag:body> 輸出自定義標簽體內容到頁面demo! </bodyTag:body> </body> </html>
4.效果圖
jsp自定義標簽獲取標簽體內容輸出到頁面展示《三》