StringUtil.java
package com.lh.bean;public class StringUtil {// 源字串private String sourceStr;// 過濾後的字串private String targetStr;public String getSourceStr() {return sourceStr;}public void setSourceStr(String sourceStr) {this.sourceStr = sourceStr;}public String getTargetStr() {// 如果原字串為nullif (sourceStr == null) {sourceStr = "";}// 如果原字串中包含空格則替換sourceStr = sourceStr.replaceAll(" ", "");targetStr = sourceStr;return targetStr;}public void setTargetStr(String targetStr) {this.targetStr = targetStr;}}
index.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><html><head><title>index.jsp</title></head><body><form action="filterstr.jsp" method="post"><table><tr><td align="right">請輸入字串：</td><td><input type="text" name="sourceStr" size="30"></td></tr><tr><td colspan="2" align="center"><input type="submit" value="過濾" /></td></tr></table></form></body></html>
filterstr.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><html><head><title>My JSP 'filter.jsp' starting page</title></head><body><%String sourceStr = request.getParameter("sourceStr");%><!-- 使用userbean動作標籤匯入javaBean對象 --><jsp:useBean id="strBean" class="com.lh.bean.StringUtil"></jsp:useBean><!-- 對StringUtil類的sourceStr屬性賦值 --><jsp:setProperty property="sourceStr" name="strBean"value="<%=sourceStr %>" /><table><tr><td>過濾之前的字串：</td><td align="left"><!-- 獲得StringUtil類的longValue屬性值 --> <jsp:getPropertyproperty="sourceStr" name="strBean" /></td></tr><tr><td>過濾之後的字串：</td><td align="left"><!-- 獲得StringUtil類的formatStr屬性值 --> <jsp:getPropertyproperty="targetStr" name="strBean" /></td></tr></table></body></html>
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