session 保存登录信息
<html>
<head>
<META http-equiv=Content-Type content="text/html; charset=utf-8">
<title>{MENU_NAME}</title>
</head>
<!--设置默认背景色-->
<body bgcolor="#f4fcff">
<!--form名称为 form_main -->
<form name="form_main" action="" method="post">
<!--表格100%居中-->
<table width="90%" border="0" cellspacing="0" cellpadding="0" align="center">
<tr>
<td><div id="container">
<table width="100%" id="panel_a">
<tr>
<td width="100%"><table width="100%" border="0" cellspacing="5" cellpadding="0" >
<tr>
<td width="25%"> </td>
<td width="25%" align="center"></td>
<td width="50%"> </td>
</tr>
<tr>
<td colspan="2" align="right">账号:</td>
<td><input type="text" name="g_loginUser" id="g_loginUser" size="20" maxLength="50"/></td>
</tr>
<tr>
<td colspan="2" align="right">密码:</td>
<td><input type="password" name="g_loginPassword" id="g_loginPassword" size="20" maxLength="50"/></td>
</tr>
</table></td>
</tr>
<tr>
<td height="44"><table width="100%" border="0" cellpadding="0" cellspacing="0" bgcolor="#99BBE8">
<tr>
<td height="1"></td>
</tr>
</table>
<table width="100%" border="0" align="center" cellpadding="0" cellspacing="0">
<tr>
<td height="33" align="center">
<input type="submit" class="buttonSubmit" id="login_btn" value="登 录">
<input type="button" class="buttonSubmit" id="ret_btn" value="返 回"></td>
</tr>
</table></td>
</tr>
</table>
</div></td>
</tr>
</table>
</form>
<script>document.body.style.background='#dfe8f6';</script>
</body>
</html>
1.当点击登录按钮时,用session保存登录信息?具体实现代码
2.如何获取保存后的session登录信息?
3.session的生命周期在哪里设置?