Servlet3.0カスタム式メソッド
4180 ワード
package com.lee.elfunction;
public class Functions {
//
public static String reverse(String text){
return new StringBuffer(text).reverse().toString();
}
//
public static int countChar(String text){
return text.length();
}
}
<?xml version="1.0" encoding="UTF-8"?>
<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/j2eeweb-jsptaglibrary_2_0.xsd"
version="2.0">
<tlib-version>1.0</tlib-version>
<short-name>crazyit</short-name>
<uri>http://www.crazyit.org/tags</uri>
<function>
<name>reverse</name>
<function-class>com.lee.elfunction.Functions</function-class>
<function-signature>
java.lang.String reverse(java.lang.String)
</function-signature>
</function>
<function>
<name>countChar</name>
<function-class>com.lee.elfunction.Functions</function-class>
<function-signature>
int countChar(java.lang.String)
</function-signature>
</function>
</taglib>
<%@page import="java.util.Date"%>
<%@page import="java.util.Enumeration"%>
<%@page import="java.net.URLDecoder"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ page isELIgnored="false"%>
<%@ taglib uri="http://java.sun.com/jstl/core_rt" prefix="c"%>
<%@ taglib uri="http://www.crazyit.org/tags" prefix="myfun"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<%
out.println(request.getParameter("name"));
String method=request.getMethod();
if("get".equalsIgnoreCase(method)){
String rawQueryStr=request.getQueryString();
if(rawQueryStr!=null && rawQueryStr.length()>0){
out.println(" :"+rawQueryStr+"<br/>");
String queryStr=URLDecoder.decode(rawQueryStr,"UTF-8");
out.println(" :"+queryStr+"<br/>");
// &
String[]paramPairs=queryStr.split("&");
for(String param:paramPairs){
out.println(" , :"+param+"<br/>");
String[] nameValue=param.split("=");
out.println(nameValue[0]+" :"+nameValue[1]+"<br/>");
}
}
}else{
Enumeration<String> headNames=request.getHeaderNames();
while(headNames.hasMoreElements()){
String headname=headNames.nextElement();
out.println(headname+"--->"+request.getHeader(headname)+"<br/>");
}
}
%>
<body>
<form action="getPostParam.jsp" method="post">
<input name="name"/>
<input name="age"/>
<input type="submit" value=" "/>
</form>
<c:set var="a" value="1"/>
<c:forEach begin="0" end="3">
<c:set var="a" value="${a+1}"/>
</c:forEach>
${a}
<%
out.println(" :"+new Date());
%>
${myfun:reverse(param["name"])}
</body>
</html>