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隨筆-230 評論-230 文章-8 trackbacks-0

首先必須要通過一個Action再轉向那個添加記錄的頁面,轉向函數如下.

?public ActionForward tokenTest(
???ActionMapping mapping,
???ActionForm form,
???HttpServletRequest request,
???HttpServletResponse response) throws Exception {
??saveToken(request);//把一個token ID保存到Session,并在且要轉到的頁面
?????? //的<html:form>中添加一個<input type="hideen">的標答.
??return mapping.findForward("add");
?}

一個輸出入頁面如容如下:

<%@ page language="java" pageEncoding="UTF-8"%>

<%@ taglib uri="<%@ taglib uri="<%@ taglib uri="<%@ taglib uri="

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html:html lang="true">
? <head>
??? <html:base />
???
??? <title>tokentest.jsp</title>
???
??? <meta http-equiv="pragma" content="no-cache">
??? <meta http-equiv="cache-control" content="no-cache">
??? <meta http-equiv="expires" content="0">???
??? <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
??? <meta http-equiv="description" content="This is my page">
? </head>
?
? <body>
????? <br>
????? <logic:present name="error">
???????? <pre style="color:#ff2255"><bean:write name="error"/></pre>
????? </logic:present>
????? <center>
????? <html:form action="/insert.do" method="post">
??????? <table border="0" cellspacing="0" >
????????? <tr>
??????????? <td width="30%">用戶名</td>
??????????? <td width="70%"><html:text property="username"/></td>
????????? </tr>
????????? <tr>
??????????? <td>地址:</td>
??????????? <td><html:text property="address"/></td>
????????? </tr>
????????? <tr>
??????????? <td colspan="2"><html:submit value="提交"/></td>
????????? </tr>
??????? </table>
?????? </html:form>
????? </center>
? </body>
</html:html>
頁面的處理Action內容如下:
? ?public ActionForward execute(
??ActionMapping mapping,
??ActionForm form,
??HttpServletRequest request,
??HttpServletResponse response) {
??TokenTestForm tokenTestForm = (TokenTestForm) form;
??if(!isTokenValid(request)){ //重復提交
???request.setAttribute("error","不能得復提交!!!");
???//saveToken(request); 重新生成tokenid,
???return mapping.findForward("return");
??}else{
???resetToken(request);
??}
??//執行相關操作
??System.out.println(tokenTestForm.getUsername()+"--"+tokenTestForm.getAddress());
??return mapping.findForward("ok");
?}

至此已完成,至于原理,就自己去查一些資料就完全明白了....