<script>
$(document).ready(function() {
			$("#name").focus();
			$("#inputForm").validate({
			   rules:{
			     code:{
			      required:true,
			      rangelength:[5,10],
			      remote:"${ctx}/sierac/product/check?oldcode=" + encodeURIComponent('${product.code}') //此處傳入後臺
			     },

			     name:{
			       required:true,
			      rangelength:[1,10]
			     },
			     shelfLife:{
			     required:true,
			     digits:true
			     },
			     pcsPerCtn:{
			      required:true,
			     digits:true
			     }
			   },
			   messages:{
			    code:{
			      required:"產品編碼不能為空",
			      rangelength:"編碼長度在5-10之間",
			      remote:"該產品編碼已經存在，請重新輸入"
			    },
			   
			    name:{
			       required:"產品名稱不能為空",
			       rangelength:"產品名稱長度介於1-10之間"
			    },
			    shelfLife:{
			     required:"保質期不能為空",
			     digits:"必須為整數"
			    },
			    pcsPerCtn:{
			    required:"每箱單品數不能為空",
			     digits:"單品數必須為整數"
			    }
			   },
				submitHandler: function(form){
					loading('正在提交，請稍等...');
					form.submit();
				},
				errorContainer: "#messageBox",
				errorPlacement: function(error, element) {
					$("#messageBox").text("輸入有誤，請先更正。");
					if (element.is(":checkbox")||element.is(":radio")||element.parent().is(".input-append")){
						error.appendTo(element.parent().parent());
					} else {
						error.insertAfter(element);
					}
				}
			});

		});
	</script>
 

<form:form id="inputForm" modelAttribute="product" action="${ctx}/sierac/product/save" method="post" class="form-horizontal">
		<form:hidden path="id"/>
		<sys:message content="${message}"/>		
		<div class="control-group">
			<label class="control-label" id="code">產品程式碼：</label>
			<div class="controls">
				 <c:choose>
                                        <c:when test="${empty product.id}">
                                                <form:input path="code" htmlEscape="false" maxlength="255"
                                                        class="input-xlarge" />
                                        </c:when>
                                        <c:otherwise>
                                                <form:input path="code" htmlEscape="false" maxlength="255"
                                                        class="input-xlarge" readonly="true" />
                                        </c:otherwise>
                                </c:choose>
				<span class="help-inline"><font color="red">*</font> </span>
			</div>
		</div>
 

後臺：

 @ResponseBody
    @RequiresPermissions("sierac:product:edit")
    @RequestMapping(value = "check")
    public String check(HttpServletRequest request ,String oldcode, String code) throws UnsupportedEncodingException {
        String s = new String(request.getParameter("code").getBytes("ISO8859-1"), "UTF-8");//encodeURIComponent編碼轉換
        if (s !=null && s.equals(oldcode)) {
			return "true";//不重複
		} else if (s !=null && productService.findByCode(s)==null) {
			return "true"; //不重複
		}
		return "false"; //重複
	}