<form name="register" action="login.action" method="post">
	<div class="form_row">
		<label class="contact"><strong>Phone:</strong></label> 
		<input type="text" class="contact_input" name="uPhone" id="uPhone" value="${param.uPhone }" onblur="phoneBlur(this.value);"/>
		<span id="uPhoneMsg"></span>
	</div>
	<div class="form_row">
		<label class="contact"><strong>Pwd:</strong></label> 
		<input type="text" class="contact_input" name="uPwd" id="uPwd"/>
		<span id="uPwdMsg">${flag }</span>
	</div>
	<div class="form_row">
		<div class="terms">
			<input type="checkbox" name="rem" id="rem" checked="checked">記住密碼
	<!-- <input type="checkbox" name="terms" id="terms"/> Rember me -->
		</div>
	</div>
	<div class="form_row">
		<input type="submit" class="register" value="login" />
	</div>
</form>

//5.1登錄
@RequestMapping("login")
public String login(String uPhone,String uPwd,String rem,Model model,HttpServletResponse response,HttpServletRequest request){
	HttpSession session = request.getSession();
	String flag = "1";
	String uId = us.selectUsersByPhone_PwdService(uPhone, uPwd);
	//判斷如果賬號(hào)密碼不存在 返回登錄頁(yè)面；存在，跳轉(zhuǎn)到首頁(yè)
	if(uId==null){
		flag="密碼錯(cuò)誤";
			request.setAttribute("flag", flag);
			return "register";
	}else{
		Users u1 = us.selectUsersByIdService(uId);
		//1.只要登錄成功 就將users對(duì)象存入session中，為之后的過(guò)濾器使用
		session.setAttribute("handlerInterceptorSession", u1);
		
		//2.登錄按鈕按下后 當(dāng)rem被選中，且密碼正確時(shí)，將賬號(hào)密碼存入session
		if(rem.equals("on")){
			Users u2 = new Users(uPhone,uPwd);
			session.setAttribute("remSession", u2);
		}
		return "index";
	}
	
}

<script>
function phoneBlur(uPhone){
var phoneMsg = document.getElementById("uPhoneMsg");
	phoneMsg.innerText="";
	$.ajax({
		type:"post",
		url:"phoneExist.action",
		data:{"uPhone":uPhone},
		dataType:"text", 
		/* 當(dāng)flag =0 提示用戶不存在
			當(dāng)flag = 1 普通用戶
		 */
		success:function(flag){
			if(flag==0){
				phoneMsg.innerText = "請(qǐng)先注冊(cè)";
			}
		}
	}) 
//5.當(dāng)光標(biāo)離開(kāi)后調(diào)用記住密碼的功能
remPwd(uPhone);
	
};

//5記住密碼
/*1.當(dāng)phone光標(biāo)離開(kāi)后 當(dāng)rem被選中 從Remsession里面遍歷，獲取賬號(hào)對(duì)應(yīng)的密碼。 */
//alert($("#rem").val());
function remPwd(uPhone){
	//每次進(jìn)入 密碼先清空
	$("#uPwd").val("");
	var remVal = $("#rem").val();
	if(remVal=="on"){
		//第一次登錄會(huì)報(bào)異常，所以加""
		var sessionPhone= ${remSession.uPhone}+"";
		var sessionPwd= ${remSession.uPwd}+"";
		//當(dāng)賬號(hào)在session中可以查詢到，就將session中的密碼賦值給輸入框pwd
		if(sessionPhone==uPhone){
			$("#uPwd").val(sessionPwd);
		}
	}
}
</script>