JSP EL表达式

作者：编程谜题解决者 | 2024-01-30 12:25:17

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JSP EL表达式

作文提交
index.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!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>
<body>

<form action="deal.jsp" method="post">
	<textarea cows="5" cols="100" name="zuowen"></textarea>
	<input type="submit">
</form>

</body>
</html>
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deal.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@taglib uri="/stringDeal" prefix="sd" %>
<% request.setCharacterEncoding("utf-8"); %>>
<!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>
<body>

提交的信息是：
${sd:shiftEnter(param.zuowen)}

</body>
</html>
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stringDeal.tld

<taglib version="2.0">
<tlib-version>1.0</tlib-version>
<uri>/stringDeal</uri>
<function>
<name>shiftEnter</name>
<function-class>zzy.StringDeal</function-class>
<function-signature>java.lang.String shiftEnter(java.lang.String)</function-signature>
</function>
</taglib>
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StringDeal.java

package zzy;

public class StringDeal {
	public static String shiftEnter(String o){
		String n=o.replaceAll("\r\n", "<br>");
		n=n.replaceAll(" ", "&nbsp");
		return n;
	}
}

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