您当前的位置: 如题，代码如下，请大侠帮忙分析:
index.jsp:
<html>
<head>
<title></title>
<script type="text/javascript">
if(<%=request.getAttribute("flag")%>){
alert("申请成功!");
}
</script>
Servlet:
FurloughApply applyInfo = new FurloughApply(0,proposer,dept,applydate,starttime,lasttime,type);
FurloughApplyDao applyDao = new FurloughApplyDaoImpl();
boolean flag = applyDao.addApply(applyInfo);
request.setAttribute("flag", flag);
if(flag == true){
request.getRequestDispatcher("index.jsp").forward(request, response);
}else{
request.getRequestDispatcher("jsp/add.jsp").forward(request, response);
}
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if(<%=request.getAttribute("flag")%>){
alert("申请成功!");
}
request接收的是object
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request.getParameter("flag")
session.getAttribute("flag")
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试试
if(<%=request.getAttribute("flag")%>=="true"){
alert("申请成功!");
}
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if(<%=request.getAttribute("flag")%>){
你这样写，其实也是拼接
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写在JS里，把JS放在页面最上面 。
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<% if(request.getAttribute("flag")!=null){%>
<script type="text/javascript">
alert("申请成功!");
</script>
<% } %>