用jQuery的插件密码校验：
html和js代码：
<!DOCTYPE html>
<html lang="zh" xmlns:th="http://www.thymeleaf.org" >
<head>
<th:block th:include="include :: header('修改用户密码')" />
<th:block th:include="include :: select2-css" />
<meta charset="UTF-8">
</head>
<body class="white-bg">
<div class="wrapper wrapper-content animated fadeInRight ibox-content">
<form class="form-horizontal m" id="form-user-resetPwd">
<input name="userId" type="hidden" th:value="${user.userId}" />
<div class="form-group">
<label class="col-sm-3 control-label">登录名称：</label>
<div class="col-sm-8">
<input class="form-control" type="text" readonly="true" name="loginName" th:value="${user.loginName}"/>
</div>
</div>
<div class="form-group">
<label class="col-sm-3 control-label">旧密码：</label>
<div class="col-sm-8">
<input class="form-control" type="password" name="oldPassword" id="oldPassword">
</div>
</div>
<div class="form-group">
<label class="col-sm-3 control-label">新密码：</label>
<div class="col-sm-8">
<input class="form-control" type="password" name="newPassword" id="newPassword" placeholder="请输入请密码" required>
</div>
</div>
<div class="form-group">
<label class="col-sm-3 control-label">再次确认：</label>
<div class="col-sm-8">
<input class="form-control" type="password" name="confirm" id="confirm" placeholder="请再次输入您的密码" >
<span class="help-block m-b-none"><i class="fa fa-info-circle"></i> 请再次输入您的密码</span>
</div>
</div>
</form>
</div>
<th:block th:include="include :: footer" />
<th:block th:include="include :: select2-js" />
<script>
$("#form-user-resetPwd").validate({
rules:{
oldPassword:{
required:true,
remote: {
url: ctx + "system/user/profile/checkPassword",
type: "get",
dataType: "json",
data: {
password: function() {
return $("input[name='oldPassword']").val();
}
}
}
},
newPassword: {
required: true,
minlength: 8,
maxlength: 20,
checkpassword: true
},
confirm: {
required: true,
equalTo: "#newPassword",
checkpassword: true
}
},
messages: {
oldPassword: {
required: "请输入原密码",
remote: "原密码错误"
},
newPassword: {
required: "请输入新密码",
minlength: "密码不能小于8位",
maxlength: "密码不能大于20位"
},
confirm: {
required: "请再次输入新密码",
equalTo: "两次密码输入不一致"
}
},
focusCleanup: true
});
/**addMethod(name,method,message)方法，参数 name 是添加的方法的名字。参数 method 是一个函数，接收三个参数 (value,element,param) 。value
是元素的值，element 是元素本身，param 是参数。
*/ jQuery.validator.addMethod("checkpassword", function(value, element) { var Password = /^(?=.*[A-Za-z])(?=.*[!@#$&*])(?=.*[0-9]).{8,20}$/; return this.optional(element) || (Password.test(value)); }, "请输入8-20位字符，至少包含数字/大写字母/小写字母/特殊符号中的三项"); function submitHandler() { if ($.validate.form()) { $.operate.save(ctx + "system/user/profile/resetPwd", $('#form-user-resetPwd').serialize()); } } </script> </body> </html>