校园选课助手【2】-重要的登录模块
用户登录模块技术要点：
- 密码通过MD5加密传输
- 分布式session存储用户登录信息
- 自定义注解进行字段校验
- 自定义拦截器完成登录验证
下面依次给出代码和详细解释：
1.使用 MD5 二次加密用户登录信息，前端先通过密码加上盐进行MD5加密交给服务器，在userSeverice验证时再对此密码加盐进行一次MD5加密才和数据库中查询的密码对比；
登录页面前端代码：
<!DOCTYPE html>
<html lang="en"xmlns:th="http://www.thymeleaf.org">
<head><meta charset="UTF-8"><title>登录</title><!-- jquery --><script type="text/javascript" th:src="@{/js/jquery.min.js}"></script><!-- bootstrap --><link rel="stylesheet" type="text/css" th:href="@{/bootstrap/css/bootstrap.min.css}"/><script type="text/javascript" th:src="@{/bootstrap/js/bootstrap.min.js}"></script><!-- jquery-validator --><script type="text/javascript" th:src="@{/jquery-validation/jquery.validate.min.js}"></script><script type="text/javascript" th:src="@{/jquery-validation/localization/messages_zh.min.js}"></script><!-- layer --><script type="text/javascript" th:src="@{/layer/layer.js}"></script><!-- md5.js --><script type="text/javascript" th:src="@{/js/md5.min.js}"></script><!-- common.js --><script type="text/javascript" th:src="@{/js/common.js}"></script>
</head>
<body>
<form name="loginForm" id="loginForm" method="post" style="width:50%; margin:0 auto"><h2 style="text-align:center; margin-bottom: 20px">用户登录</h2><div class="form-group"><div class="row"><label class="form-label col-md-4">请输入手机号码</label><div class="col-md-5"><input id="mobile" name="mobile" class="form-control" type="text" placeholder="手机号码" required="true"/><!-- 取消位数限制 minlength="11" maxlength="11"--></div><div class="col-md-1"></div></div></div><div class="form-group"><div class="row"><label class="form-label col-md-4">请输入密码</label><div class="col-md-5"><input id="password" name="password" class="form-control" type="password" placeholder="密码"required="true"/><!-- 取消位数限制 minlength="6" maxlength="16"--></div></div></div><div class="row"><div class="col-md-5"><button class="btn btn-primary btn-block" type="reset" onclick="reset()">重置</button></div><div class="col-md-5"><button class="btn btn-primary btn-block" type="submit" onclick="login()">登录</button></div></div>
</form>
</body>
<script>function login() {$("#loginForm").validate({submitHandler: function (form) {doLogin();}});}function doLogin() {g_showLoading();var inputPass = $("#password").val();var salt = g_passsword_salt;var str = "" + salt.charAt(0) + salt.charAt(2) + inputPass + salt.charAt(5) + salt.charAt(4);var password = md5(str);$.ajax({url: "/login/doLogin",type: "POST",data: {mobile: $("#mobile").val(),password: password},success: function (data) {layer.closeAll();if (data.code == 200) {layer.msg("成功");console.log(data);document.cookie = "userTicket=" + data.object;window.location.href = "/goods/toList";} else {layer.msg(data.message);}},error: function () {layer.closeAll();}});}
</script>
</html>
validate的JS代码：
!function(a){"function"==typeof define&&define.amd?define(["jquery"],a):a(jQuery)}(function(a){a.extend(a.fn,{validate:function(b){if(!this.length)return void(b&&b.debug&&window.console&&console.warn("Nothing selected, can't validate, returning nothing."));var c=a.data(this[0],"validator");return c?c:(this.attr("novalidate","novalidate"),c=new a.validator(b,this[0]),a.data(this[0],"validator",c),c.settings.onsubmit&&(this.on("click.validate",":submit",function(b){c.settings.submitHandler&&(c.submitButton=b.target),a(this).hasClass("cancel")&&(c.cancelSubmit=!0),void 0!==a(this).attr("formnovalidate")&&(c.cancelSubmit=!0)}),this.on("submit.validate",function(b){function d(){var d,e;return c.settings.submitHandler?(c.submitButton&&(d=a("<input type='hidden'/>").attr("name",c.submitButton.name).val(a(c.submitButton).val()).appendTo(c.currentForm)),e=c.settings.submitHandler.call(c,c.currentForm,b),c.submitButton&&d.remove(),void 0!==e?e:!1):!0}return c.settings.debug&&b.preventDefault(),c.cancelSubmit?(c.cancelSubmit=!1,d()):c.form()?c.pendingRequest?(c.formSubmitted=!0,!1):d():(c.focusInvalid(),!1)})),c)},valid:function(){var b,c,d;return a(this[0]).is("form")?b=this.validate().form():(d=[],b=!0,c=a(this[0].form).validate(),this.each(function(){b=c.element(this)&&b,d=d.concat(c.errorList)}),c.errorList=d),b},rules:function(b,c){var d,e,f,g,h,i,j=this[0];if(b)switch(d=a.data(j.form,"validator").settings,e=d.rules,f=a.validator.staticRules(j),b){case"add":a.extend(f,a.validator.normalizeRule(c)),delete f.messages,e[j.name]=f,c.messages&&(d.messages[j.name]=a.extend(d.messages[j.name],c.messages));break;case"remove":return c?(i={},a.each(c.split(/\s/),function(b,c){i[c]=f[c],delete f[c],"required"===c&&a(j).removeAttr("aria-required")}),i):(delete e[j.name],f)}return g=a.validator.normalizeRules(a.extend({},a.validator.classRules(j),a.validator.attributeRules(j),a.validator.dataRules(j),a.validator.staticRules(j)),j),g.required&&(h=g.required,delete g.required,g=a.extend({required:h},g),a(j).attr("aria-required","true")),g.remote&&(h=g.remote,delete g.remote,g=a.extend(g,{remote:h})),g}}),a.extend(a.expr[":"],{blank:function(b){return!a.trim(""+a(b).val())},filled:function(b){return!!a.trim(""+a(b).val())},unchecked:function(b){return!a(b).prop("checked")}}),a.validator=function(b,c){this.settings=a.extend(!0,{},a.validator.defaults,b),this.currentForm=c,this.init()},a.validator.format=function(b,c){return 1===arguments.length?function(){var c=a.makeArray(arguments);return c.unshift(b),a.validator.format.apply(this,c)}:(arguments.length>2&&c.constructor!==Array&&(c=a.makeArray(arguments).slice(1)),c.constructor!==Array&&(c=[c]),a.each(c,function(a,c){b=b.replace(new RegExp("\\{"+a+"\\}","g"),function(){return c})}),b)},a.extend(a.validator,{defaults:{messages:{},groups:{},rules:{},errorClass:"error",validClass:"valid",errorElement:"label",focusCleanup:!1,focusInvalid:!0,errorContainer:a([]),errorLabelContainer:a([]),onsubmit:!0,ignore:":hidden",ignoreTitle:!1,onfocusin:function(a){this.lastActive=a,this.settings.focusCleanup&&(this.settings.unhighlight&&this.settings.unhighlight.call(this,a,this.settings.errorClass,this.settings.validClass),this.hideThese(this.errorsFor(a)))},onfocusout:function(a){this.checkable(a)||!(a.name in this.submitted)&&this.optional(a)||this.element(a)},onkeyup:function(b,c){var d=[16,17,18,20,35,36,37,38,39,40,45,144,225];9===c.which&&""===this.elementValue(b)||-1!==a.inArray(c.keyCode,d)||(b.name in this.submitted||b===this.lastElement)&&this.element(b)},onclick:function(a){a.name in this.submitted?this.element(a):a.parentNode.name in this.submitted&&this.element(a.parentNode)},highlight:function(b,c,d){"radio"===b.type?this.findByName(b.name).addClass(c).removeClass(d):a(b).addClass(c).removeClass(d)},unhighlight:function(b,c,d){"radio"===b.type?this.findByName(b.name).removeClass(c).addClass(d):a(b).removeClass(c).addClass(d)}},setDefaults:function(b){a.extend(a.validator.defaults,b)},messages:{required:"This field is required.",remote:"Please fix this field.",email:"Please enter a valid email address.",url:"Please enter a valid URL.",date:"Please enter a valid date.",dateISO:"Please enter a valid date ( ISO ).",number:"Please enter a valid number.",digits:"Please enter only digits.",creditcard:"Please enter a valid credit card number.",equalTo:"Please enter the same value again.",maxlength:a.validator.format("Please enter no more than {0} characters."),minlength:a.validator.format("Please enter at least {0} characters."),rangelength:a.validator.format("Please enter a value between {0} and {1} characters long."),range:a.validator.format("Please enter a value between {0} and {1}."),max:a.validator.format("Please enter a value less than or equal to {0}."),min:a.validator.format("Please enter a value greater than or equal to {0}.")},autoCreateRanges:!1,prototype:{init:function(){function b(b){var c=a.data(this.form,"validator"),d="on"+b.type.replace(/^validate/,""),e=c.settings;e[d]&&!a(this).is(e.ignore)&&e[d].call(c,this,b)}this.labelContainer=a(this.settings.errorLabelContainer),this.errorContext=this.labelContainer.length&&this.labelContainer||a(this.currentForm),this.containers=a(this.settings.errorContainer).add(this.settings.errorLabelContainer),this.submitted={},this.valueCache={},this.pendingRequest=0,this.pending={},this.invalid={},this.reset();var c,d=this.groups={};a.each(this.settings.groups,function(b,c){"string"==typeof c&&(c=c.split(/\s/)),a.each(c,function(a,c){d[c]=b})}),c=this.settings.rules,a.each(c,function(b,d){c[b]=a.validator.normalizeRule(d)}),a(this.currentForm).on("focusin.validate focusout.validate keyup.validate",":text, [type='password'], [type='file'], select, textarea, [type='number'], [type='search'], [type='tel'], [type='url'], [type='email'], [type='datetime'], [type='date'], [type='month'], [type='week'], [type='time'], [type='datetime-local'], [type='range'], [type='color'], [type='radio'], [type='checkbox']",b).on("click.validate","select, option, [type='radio'], [type='checkbox']",b),this.settings.invalidHandler&&a(this.currentForm).on("invalid-form.validate",this.settings.invalidHandler),a(this.currentForm).find("[required], [data-rule-required], .required").attr("aria-required","true")},form:function(){return this.checkForm(),a.extend(this.submitted,this.errorMap),this.invalid=a.extend({},this.errorMap),this.valid()||a(this.currentForm).triggerHandler("invalid-form",[this]),this.showErrors(),this.valid()},checkForm:function(){this.prepareForm();for(var a=0,b=this.currentElements=this.elements();b[a];a++)this.check(b[a]);return this.valid()},element:function(b){var c=this.clean(b),d=this.validationTargetFor(c),e=!0;return this.lastElement=d,void 0===d?delete this.invalid[c.name]:(this.prepareElement(d),this.currentElements=a(d),e=this.check(d)!==!1,e?delete this.invalid[d.name]:this.invalid[d.name]=!0),a(b).attr("aria-invalid",!e),this.numberOfInvalids()||(this.toHide=this.toHide.add(this.containers)),this.showErrors(),e},showErrors:function(b){if(b){a.extend(this.errorMap,b),this.errorList=[];for(var c in b)this.errorList.push({message:b[c],element:this.findByName(c)[0]});this.successList=a.grep(this.successList,function(a){return!(a.name in b)})}this.settings.showErrors?this.settings.showErrors.call(this,this.errorMap,this.errorList):this.defaultShowErrors()},resetForm:function(){a.fn.resetForm&&a(this.currentForm).resetForm(),this.submitted={},this.lastElement=null,this.prepareForm(),this.hideErrors();var b,c=this.elements().removeData("previousValue").removeAttr("aria-invalid");if(this.settings.unhighlight)for(b=0;c[b];b++)this.settings.unhighlight.call(this,c[b],this.settings.errorClass,"");else c.removeClass(this.settings.errorClass)},numberOfInvalids:function(){return this.objectLength(this.invalid)},objectLength:function(a){var b,c=0;for(b in a)c++;return c},hideErrors:function(){this.hideThese(this.toHide)},hideThese:function(a){a.not(this.containers).text(""),this.addWrapper(a).hide()},valid:function(){return 0===this.size()},size:function(){return this.errorList.length},focusInvalid:function(){if(this.settings.focusInvalid)try{a(this.findLastActive()||this.errorList.length&&this.errorList[0].element||[]).filter(":visible").focus().trigger("focusin")}catch(b){}},findLastActive:function(){var b=this.lastActive;return b&&1===a.grep(this.errorList,function(a){return a.element.name===b.name}).length&&b},elements:function(){var b=this,c={};return a(this.currentForm).find("input, select, textarea").not(":submit, :reset, :image, :disabled").not(this.settings.ignore).filter(function(){return!this.name&&b.settings.debug&&window.console&&console.error("%o has no name assigned",this),this.name in c||!b.objectLength(a(this).rules())?!1:(c[this.name]=!0,!0)})},clean:function(b){return a(b)[0]},errors:function(){var b=this.settings.errorClass.split(" ").join(".");return a(this.settings.errorElement+"."+b,this.errorContext)},reset:function(){this.successList=[],this.errorList=[],this.errorMap={},this.toShow=a([]),this.toHide=a([]),this.currentElements=a([])},prepareForm:function(){this.reset(),this.toHide=this.errors().add(this.containers)},prepareElement:function(a){this.reset(),this.toHide=this.errorsFor(a)},elementValue:function(b){var c,d=a(b),e=b.type;return"radio"===e||"checkbox"===e?this.findByName(b.name).filter(":checked").val():"number"===e&&"undefined"!=typeof b.validity?b.validity.badInput?!1:d.val():(c=d.val(),"string"==typeof c?c.replace(/\r/g,""):c)},check:function(b){b=this.validationTargetFor(this.clean(b));var c,d,e,f=a(b).rules(),g=a.map(f,function(a,b){return b}).length,h=!1,i=this.elementValue(b);for(d in f){e={method:d,parameters:f[d]};try{if(c=a.validator.methods[d].call(this,i,b,e.parameters),"dependency-mismatch"===c&&1===g){h=!0;continue}if(h=!1,"pending"===c)return void(this.toHide=this.toHide.not(this.errorsFor(b)));if(!c)return this.formatAndAdd(b,e),!1}catch(j){throw this.settings.debug&&window.console&&console.log("Exception occurred when checking element "+b.id+", check the '"+e.method+"' method.",j),j instanceof TypeError&&(j.message+=". Exception occurred when checking element "+b.id+", check the '"+e.method+"' method."),j}}if(!h)return this.objectLength(f)&&this.successList.push(b),!0},customDataMessage:function(b,c){return a(b).data("msg"+c.charAt(0).toUpperCase()+c.substring(1).toLowerCase())||a(b).data("msg")},customMessage:function(a,b){var c=this.settings.messages[a];return c&&(c.constructor===String?c:c[b])},findDefined:function(){for(var a=0;a<arguments.length;a++)if(void 0!==arguments[a])return arguments[a];return void 0},defaultMessage:function(b,c){return this.findDefined(this.customMessage(b.name,c),this.customDataMessage(b,c),!this.settings.ignoreTitle&&b.title||void 0,a.validator.messages[c],"<strong>Warning: No message defined for "+b.name+"</strong>")},formatAndAdd:function(b,c){var d=this.defaultMessage(b,c.method),e=/\$?\{(\d+)\}/g;"function"==typeof d?d=d.call(this,c.parameters,b):e.test(d)&&(d=a.validator.format(d.replace(e,"{$1}"),c.parameters)),this.errorList.push({message:d,element:b,method:c.method}),this.errorMap[b.name]=d,this.submitted[b.name]=d},addWrapper:function(a){return this.settings.wrapper&&(a=a.add(a.parent(this.settings.wrapper))),a},defaultShowErrors:function(){var a,b,c;for(a=0;this.errorList[a];a++)c=this.errorList[a],this.settings.highlight&&this.settings.highlight.call(this,c.element,this.settings.errorClass,this.settings.validClass),this.showLabel(c.element,c.message);if(this.errorList.length&&(this.toShow=this.toShow.add(this.containers)),this.settings.success)for(a=0;this.successList[a];a++)this.showLabel(this.successList[a]);if(this.settings.unhighlight)for(a=0,b=this.validElements();b[a];a++)this.settings.unhighlight.call(this,b[a],this.settings.errorClass,this.settings.validClass);this.toHide=this.toHide.not(this.toShow),this.hideErrors(),this.addWrapper(this.toShow).show()},validElements:function(){return this.currentElements.not(this.invalidElements())},invalidElements:function(){return a(this.errorList).map(function(){return this.element})},showLabel:function(b,c){var d,e,f,g=this.errorsFor(b),h=this.idOrName(b),i=a(b).attr("aria-describedby");g.length?(g.removeClass(this.settings.validClass).addClass(this.settings.errorClass),g.html(c)):(g=a("<"+this.settings.errorElement+">").attr("id",h+"-error").addClass(this.settings.errorClass).html(c||""),d=g,this.settings.wrapper&&(d=g.hide().show().wrap("<"+this.settings.wrapper+"/>").parent()),this.labelContainer.length?this.labelContainer.append(d):this.settings.errorPlacement?this.settings.errorPlacement(d,a(b)):d.insertAfter(b),g.is("label")?g.attr("for",h):0===g.parents("label[for='"+h+"']").length&&(f=g.attr("id").replace(/(:|\.|\[|\]|\$)/g,"\\$1"),i?i.match(new RegExp("\\b"+f+"\\b"))||(i+=" "+f):i=f,a(b).attr("aria-describedby",i),e=this.groups[b.name],e&&a.each(this.groups,function(b,c){c===e&&a("[name='"+b+"']",this.currentForm).attr("aria-describedby",g.attr("id"))}))),!c&&this.settings.success&&(g.text(""),"string"==typeof this.settings.success?g.addClass(this.settings.success):this.settings.success(g,b)),this.toShow=this.toShow.add(g)},errorsFor:function(b){var c=this.idOrName(b),d=a(b).attr("aria-describedby"),e="label[for='"+c+"'], label[for='"+c+"'] *";return d&&(e=e+", #"+d.replace(/\s+/g,", #")),this.errors().filter(e)},idOrName:function(a){return this.groups[a.name]||(this.checkable(a)?a.name:a.id||a.name)},validationTargetFor:function(b){return this.checkable(b)&&(b=this.findByName(b.name)),a(b).not(this.settings.ignore)[0]},checkable:function(a){return/radio|checkbox/i.test(a.type)},findByName:function(b){return a(this.currentForm).find("[name='"+b+"']")},getLength:function(b,c){switch(c.nodeName.toLowerCase()){case"select":return a("option:selected",c).length;case"input":if(this.checkable(c))return this.findByName(c.name).filter(":checked").length}return b.length},depend:function(a,b){return this.dependTypes[typeof a]?this.dependTypes[typeof a](a,b):!0},dependTypes:{"boolean":function(a){return a},string:function(b,c){return!!a(b,c.form).length},"function":function(a,b){return a(b)}},optional:function(b){var c=this.elementValue(b);return!a.validator.methods.required.call(this,c,b)&&"dependency-mismatch"},startRequest:function(a){this.pending[a.name]||(this.pendingRequest++,this.pending[a.name]=!0)},stopRequest:function(b,c){this.pendingRequest--,this.pendingRequest<0&&(this.pendingRequest=0),delete this.pending[b.name],c&&0===this.pendingRequest&&this.formSubmitted&&this.form()?(a(this.currentForm).submit(),this.formSubmitted=!1):!c&&0===this.pendingRequest&&this.formSubmitted&&(a(this.currentForm).triggerHandler("invalid-form",[this]),this.formSubmitted=!1)},previousValue:function(b){return a.data(b,"previousValue")||a.data(b,"previousValue",{old:null,valid:!0,message:this.defaultMessage(b,"remote")})},destroy:function(){this.resetForm(),a(this.currentForm).off(".validate").removeData("validator")}},classRuleSettings:{required:{required:!0},email:{email:!0},url:{url:!0},date:{date:!0},dateISO:{dateISO:!0},number:{number:!0},digits:{digits:!0},creditcard:{creditcard:!0}},addClassRules:function(b,c){b.constructor===String?this.classRuleSettings[b]=c:a.extend(this.classRuleSettings,b)},classRules:function(b){var c={},d=a(b).attr("class");return d&&a.each(d.split(" "),function(){this in a.validator.classRuleSettings&&a.extend(c,a.validator.classRuleSettings[this])}),c},normalizeAttributeRule:function(a,b,c,d){/min|max/.test(c)&&(null===b||/number|range|text/.test(b))&&(d=Number(d),isNaN(d)&&(d=void 0)),d||0===d?a[c]=d:b===c&&"range"!==b&&(a[c]=!0)},attributeRules:function(b){var c,d,e={},f=a(b),g=b.getAttribute("type");for(c in a.validator.methods)"required"===c?(d=b.getAttribute(c),""===d&&(d=!0),d=!!d):d=f.attr(c),this.normalizeAttributeRule(e,g,c,d);return e.maxlength&&/-1|2147483647|524288/.test(e.maxlength)&&delete e.maxlength,e},dataRules:function(b){var c,d,e={},f=a(b),g=b.getAttribute("type");for(c in a.validator.methods)d=f.data("rule"+c.charAt(0).toUpperCase()+c.substring(1).toLowerCase()),this.normalizeAttributeRule(e,g,c,d);return e},staticRules:function(b){var c={},d=a.data(b.form,"validator");return d.settings.rules&&(c=a.validator.normalizeRule(d.settings.rules[b.name])||{}),c},normalizeRules:function(b,c){return a.each(b,function(d,e){if(e===!1)return void delete b[d];if(e.param||e.depends){var f=!0;switch(typeof e.depends){case"string":f=!!a(e.depends,c.form).length;break;case"function":f=e.depends.call(c,c)}f?b[d]=void 0!==e.param?e.param:!0:delete b[d]}}),a.each(b,function(d,e){b[d]=a.isFunction(e)?e(c):e}),a.each(["minlength","maxlength"],function(){b[this]&&(b[this]=Number(b[this]))}),a.each(["rangelength","range"],function(){var c;b[this]&&(a.isArray(b[this])?b[this]=[Number(b[this][0]),Number(b[this][1])]:"string"==typeof b[this]&&(c=b[this].replace(/[\[\]]/g,"").split(/[\s,]+/),b[this]=[Number(c[0]),Number(c[1])]))}),a.validator.autoCreateRanges&&(null!=b.min&&null!=b.max&&(b.range=[b.min,b.max],delete b.min,delete b.max),null!=b.minlength&&null!=b.maxlength&&(b.rangelength=[b.minlength,b.maxlength],delete b.minlength,delete b.maxlength)),b},normalizeRule:function(b){if("string"==typeof b){var c={};a.each(b.split(/\s/),function(){c[this]=!0}),b=c}return b},addMethod:function(b,c,d){a.validator.methods[b]=c,a.validator.messages[b]=void 0!==d?d:a.validator.messages[b],c.length<3&&a.validator.addClassRules(b,a.validator.normalizeRule(b))},methods:{required:function(b,c,d){if(!this.depend(d,c))return"dependency-mismatch";if("select"===c.nodeName.toLowerCase()){var e=a(c).val();return e&&e.length>0}return this.checkable(c)?this.getLength(b,c)>0:b.length>0},email:function(a,b){return this.optional(b)||/^[a-zA-Z0-9.!#$%&'*+\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/.test(a)},url:function(a,b){return this.optional(b)||/^(?:(?:(?:https?|ftp):)?\/\/)(?:\S+(?::\S*)?@)?(?:(?!(?:10|127)(?:\.\d{1,3}){3})(?!(?:169\.254|192\.168)(?:\.\d{1,3}){2})(?!172\.(?:1[6-9]|2\d|3[0-1])(?:\.\d{1,3}){2})(?:[1-9]\d?|1\d\d|2[01]\d|22[0-3])(?:\.(?:1?\d{1,2}|2[0-4]\d|25[0-5])){2}(?:\.(?:[1-9]\d?|1\d\d|2[0-4]\d|25[0-4]))|(?:(?:[a-z\u00a1-\uffff0-9]-*)*[a-z\u00a1-\uffff0-9]+)(?:\.(?:[a-z\u00a1-\uffff0-9]-*)*[a-z\u00a1-\uffff0-9]+)*(?:\.(?:[a-z\u00a1-\uffff]{2,})).?)(?::\d{2,5})?(?:[/?#]\S*)?$/i.test(a)},date:function(a,b){return this.optional(b)||!/Invalid|NaN/.test(new Date(a).toString())},dateISO:function(a,b){return this.optional(b)||/^\d{4}[\/\-](0?[1-9]|1[012])[\/\-](0?[1-9]|[12][0-9]|3[01])$/.test(a)},number:function(a,b){return this.optional(b)||/^(?:-?\d+|-?\d{1,3}(?:,\d{3})+)?(?:\.\d+)?$/.test(a)},digits:function(a,b){return this.optional(b)||/^\d+$/.test(a)},creditcard:function(a,b){if(this.optional(b))return"dependency-mismatch";if(/[^0-9 \-]+/.test(a))return!1;var c,d,e=0,f=0,g=!1;if(a=a.replace(/\D/g,""),a.length<13||a.length>19)return!1;for(c=a.length-1;c>=0;c--)d=a.charAt(c),f=parseInt(d,10),g&&(f*=2)>9&&(f-=9),e+=f,g=!g;return e%10===0},minlength:function(b,c,d){var e=a.isArray(b)?b.length:this.getLength(b,c);return this.optional(c)||e>=d},maxlength:function(b,c,d){var e=a.isArray(b)?b.length:this.getLength(b,c);return this.optional(c)||d>=e},rangelength:function(b,c,d){var e=a.isArray(b)?b.length:this.getLength(b,c);return this.optional(c)||e>=d[0]&&e<=d[1]},min:function(a,b,c){return this.optional(b)||a>=c},max:function(a,b,c){return this.optional(b)||c>=a},range:function(a,b,c){return this.optional(b)||a>=c[0]&&a<=c[1]},equalTo:function(b,c,d){var e=a(d);return this.settings.onfocusout&&e.off(".validate-equalTo").on("blur.validate-equalTo",function(){a(c).valid()}),b===e.val()},remote:function(b,c,d){if(this.optional(c))return"dependency-mismatch";var e,f,g=this.previousValue(c);return this.settings.messages[c.name]||(this.settings.messages[c.name]={}),g.originalMessage=this.settings.messages[c.name].remote,this.settings.messages[c.name].remote=g.message,d="string"==typeof d&&{url:d}||d,g.old===b?g.valid:(g.old=b,e=this,this.startRequest(c),f={},f[c.name]=b,a.ajax(a.extend(!0,{mode:"abort",port:"validate"+c.name,dataType:"json",data:f,context:e.currentForm,success:function(d){var f,h,i,j=d===!0||"true"===d;e.settings.messages[c.name].remote=g.originalMessage,j?(i=e.formSubmitted,e.prepareElement(c),e.formSubmitted=i,e.successList.push(c),delete e.invalid[c.name],e.showErrors()):(f={},h=d||e.defaultMessage(c,"remote"),f[c.name]=g.message=a.isFunction(h)?h(b):h,e.invalid[c.name]=!0,e.showErrors(f)),g.valid=j,e.stopRequest(c,j)}},d)),"pending")}}});var b,c={};a.ajaxPrefilter?a.ajaxPrefilter(function(a,b,d){var e=a.port;"abort"===a.mode&&(c[e]&&c[e].abort(),c[e]=d)}):(b=a.ajax,a.ajax=function(d){var e=("mode"in d?d:a.ajaxSettings).mode,f=("port"in d?d:a.ajaxSettings).port;return"abort"===e?(c[f]&&c[f].abort(),c[f]=b.apply(this,arguments),c[f]):b.apply(this,arguments)})});
服务端登录controller代码：
package com.example.seckilldemo.controller;import com.example.seckilldemo.service.UserService;
import com.example.seckilldemo.vo.LoginVo;
import com.example.seckilldemo.vo.RespBean;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.validation.Valid;/*** @Author wuyifan* @Date 2024/4/22 16:03* @Version 1.0*/
@Controller
@RequestMapping("/login")
@Slf4j
public class LoginController {@Autowiredprivate UserService userService;@RequestMapping("/toLogin")public String toLogin(){return "login";}/* RequestMapping注解用于将HTTP请求映射到该方法上。当客户端发送一个URL为"/doLogin"的请求时Spring将调用这个方法来处理请求。*/@RequestMapping("/doLogin")
/* @ResponseBody：这个注解表示该方法的返回值将直接作为HTTP响应的内容，而不是通过视图解析器进行渲染。通常用于返回JSON数据或其他格式的数据。*/@ResponseBody
/* 通过在LoginVo类的属性上添加校验规则注解（如@NotBlank、@Size等），可以对该对象的属性进行验证。当使用@Valid注解标记一个对象参数时，Spring会自动触发验证过程，检查该对象的属性是否满足校验规则。*/public RespBean doLogin(@Valid LoginVo loginVo, HttpServletRequest request,HttpServletResponse response){return userService.doLogin(loginVo, request, response);}}登录验证的service代码： 随机生成一个uuid作为key，将用户登陆信息使用Redis存储，将key作为cookie返回。
package com.example.seckilldemo.service.impl;import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.example.seckilldemo.exception.GlobalException;
import com.example.seckilldemo.mapper.UserMapper;
import com.example.seckilldemo.pojo.User;
import com.example.seckilldemo.service.UserService;
import com.example.seckilldemo.utils.*;
import com.example.seckilldemo.vo.LoginVo;
import com.example.seckilldemo.vo.RespBean;
import com.example.seckilldemo.vo.RespBeanEnum;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;
import org.thymeleaf.util.StringUtils;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;/*** @Author wuyifan* @Date 2024/4/22 15:57* @Version 1.0*/
@Service
public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements UserService {@Autowiredprivate UserMapper userMapper;@Autowiredprivate RedisTemplate<String,Object> redisTemplate;@Overridepublic RespBean doLogin(LoginVo loginVo, HttpServletRequest request, HttpServletResponse response) {String mobile = loginVo.getMobile();String password = loginVo.getPassword();//使用自定义注解完成字段检验
// if (StringUtils.isEmpty(mobile) || StringUtils.isEmpty(password)) {
// return RespBean.error(RespBeanEnum.LOGIN_ERROR);
// }
// if(!ValidatorUtil.isMobile(mobile)){
// return RespBean.error(RespBeanEnum.MOBILE_ERROR);
// }User user = userMapper.selectById(mobile);if(null == user){log.error("查詢失敗");
// return RespBean.error(RespBeanEnum.LOGIN_ERROR);throw new GlobalException(RespBeanEnum.LOGIN_ERROR);}if(!MD5Util.formPassToDBPass(password,user.getSalt()).equals(user.getPassword())){
// return RespBean.error(RespBeanEnum.LOGIN_ERROR);throw new GlobalException(RespBeanEnum.LOGIN_ERROR);}//生成cookieString ticket = UUIDUtil.uuid();//将用户信息存入Redis中redisTemplate.opsForValue().set("user:"+ticket,user);
// request.getSession().setAttribute(ticket,user);CookieUtil.setCookie(request,response,"userTicket",ticket);
// System.out.println(CookieUtil.getCookieValue(request, "userTicket"));return RespBean.success(ticket);}@Overridepublic RespBean updatePassword(String userTicket, String pwd, HttpServletResponse response, HttpServletRequest request) {User user = getUserByCookie(userTicket,request,response);if(user == null)throw new GlobalException(RespBeanEnum.MOBILE_NOT_EXIST);user.setPassword(MD5Util.inputPassToDBPass(pwd,user.getSalt()));int result = userMapper.updateById(user);if(1 == result){redisTemplate.delete("user:"+userTicket);return RespBean.success();}return RespBean.error(RespBeanEnum.PASSWORD_UPDATE_FAIL);}@Overridepublic User getUserByCookie(String userTicket, HttpServletRequest request, HttpServletResponse response) {if(StringUtils.isEmpty(userTicket))return null;User user = (User) redisTemplate.opsForValue().get("user:"+userTicket);if(user != null){CookieUtil.setCookie(request,response,"userTicket",userTicket);}return user;}}实现自定义拦截器方法：实现WebMvcConfigurer 接口，使得springMVC调用服务接口时进行用户身份解析
package com.example.seckilldemo.config;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.method.support.HandlerMethodArgumentResolver;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;import java.util.List;/*** @Author wuyifan* @Date 2024/4/24 12:01* @Version 1.0*/
@Configuration
//这个注解启用了Spring MVC的功能，用于处理Web请求和响应。
@EnableWebMvc
public class WebConfig implements WebMvcConfigurer {//UserArgumentResolver是一个自定义的参数解析器，用于解析请求中的用户信息。@AutowiredUserArgumentResolver userArgumentResolver;@Autowiredprivate AccessLimitInterceptor accessLimitInterceptor;// 这个方法是WebMvcConfigurer接口的一个回调方法，用于添加自定义的参数解析器。
// 将userArgumentResolver添加到参数解析器列表中，以便在处理请求时使用该解析器解析用户信息。@Overridepublic void addArgumentResolvers(List<HandlerMethodArgumentResolver> resolvers) {resolvers.add(userArgumentResolver);}/* 这个方法是WebMvcConfigurer接口的一个回调方法，用于添加拦截器。将accessLimitInterceptor添加到拦截器列表中，以便在请求处理之前进行接口限流的拦截。*/@Overridepublic void addInterceptors(InterceptorRegistry registry) {registry.addInterceptor(accessLimitInterceptor);}//静态资源展示@Overridepublic void addResourceHandlers(ResourceHandlerRegistry registry) {registry.addResourceHandler("/**").addResourceLocations("classpath:/static/");//swagger 和 knife4jregistry.addResourceHandler("swagger-ui.html").addResourceLocations("classpath:/META-INF/resources/");registry.addResourceHandler("doc.html").addResourceLocations("classpath:/META-INF/resources/");registry.addResourceHandler("/webjars/**").addResourceLocations("classpath:/META-INF/resources/webjars/");}}
两种方法获取用户登录信息，一种是通过获取Redis里存储的用户信息；另一种是使用ThreadLocal获取用户信息(后面使用接口限流会给出方法)。
package com.example.seckilldemo.config;import com.example.seckilldemo.pojo.User;
import com.example.seckilldemo.service.UserService;
import com.example.seckilldemo.utils.CookieUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.MethodParameter;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.support.WebDataBinderFactory;
import org.springframework.web.context.request.NativeWebRequest;
import org.springframework.web.method.support.HandlerMethodArgumentResolver;
import org.springframework.web.method.support.ModelAndViewContainer;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;/*** @Author wuyifan* @Date 2024/4/24 12:05* @Version 1.0*/
@Component
public class UserArgumentResolver implements HandlerMethodArgumentResolver {@Autowiredprivate UserService userService;@Overridepublic boolean supportsParameter(MethodParameter parameter) {Class<?> parameterType = parameter.getParameterType();return parameterType == User.class;}@Overridepublic Object resolveArgument(MethodParameter parameter, ModelAndViewContainer mavContainer, NativeWebRequest webRequest, WebDataBinderFactory binderFactory) throws Exception {HttpServletRequest nativeRequest = webRequest.getNativeRequest(HttpServletRequest.class);HttpServletResponse nativeResponse = webRequest.getNativeResponse(HttpServletResponse.class);String userTicket = CookieUtil.getCookieValue(nativeRequest, "userTicket");
System.out.println("userTicket"+userTicket);if (StringUtils.isEmpty(userTicket)) {return null;}return userService.getUserByCookie(userTicket,nativeRequest,nativeResponse);}
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