跨域请求的cookie处理

小灰灰 2022-10-02 01:55 184阅读 0赞

[2019独角兽企业重金招聘Python工程师标准>>> ][2019_Python_] ![hot3.png][]

跨域名的情况下未测试，目前遇到的是跨端口的情况，以下解决方案在跨端口情况下测试通过

现有两个项目，项目A是主项目，路由为localhost；项目B是子项目，路由为localhost:8080

需要实现的业务为：A是主项目，系统入口也是从A进入，用户登录状态保存在缓存中，生成uuid（作为登录状态的key）保存到cookie中；要求在A中要嵌入使用B的一些业务，B项目中用户登录信息直接从缓存中获取，所以需要能在B项目中取到A项目保存到cookie中的uuid值

1）ajax请求添加以下参数

ps：基于jquery，定义casLoad，casPost，casGet方法，具体内容参考末尾

xhrFields: {
        withCredentials: true
    },
    crossDomain: true

2）B项目中，允许被跨域的controller层添加拦截器，拦截器功能：在response中设置Header内容

HttpServletRequest request = controller.getRequest();
    String origin = request.getHeader("Origin");
    origin = StringUtil.isNullOrEmpty(origin) ? "*" : origin;
    
    HttpServletResponse response = controller.getResponse();
    response.setHeader("Access-Control-Allow-Origin", origin);
    response.setHeader("Access-Control-Allow-Methods", "POST, GET");
    response.setHeader("Access-Control-Max-Age", "3600");
    response.setHeader("Access-Control-Allow-Headers", "Content-Type, Access-Control-Allow-Headers, Authorization, X-Requested-With");
    response.setHeader("Access-Control-Allow-Credentials", "true");

ajax.cross.js

//@ sourceURL=ajax.cross.js
    ;
    (function ($, window) {
        //取代$.fn.load，并兼容非跨域情况，如果url包含http:，则直接调用load方法
        //$('#div').crossLoad('http://xxx/xxx/xxx')跨域请求
        //$('#div').crossLoad('/xxx/xxx/xxx')等同于$('#div').load('/xxx/xxx/xxx')
        $.fn.crossLoad = function (url, data, callback) {
            if (url.indexOf('http:') >= 0) {
                if (typeof data === 'function') {
                    callback = data;
                    data = undefined;
                }
                new CrossAjax($(this), 'load', {url: url, data: data, callback: callback});
                return this;
            } else {
                return this.load(url, data, callback);
            }
        };
    
        //取代$.get，兼容非跨域情况
        //$.crossGet('http://xxx/xxx/xxx')跨域请求
        //$.crossGet('/xxx/xxx/xxx')等同于$.get('/xxx/xxx/xxx')
        $.crossGet = function (url, data, callback) {
            if (url.indexOf('http:') >= 0) {
                if (typeof data === 'function') {
                    callback = data;
                    data = undefined;
                }
                new CrossAjax(null, 'get', {url: url, data: data, callback: callback});
            } else {
                jQuery.get(url, data, callback);
            }
        };
    
        $.crossPost = function (url, data, callback) {
            if (url.indexOf('http:') >= 0) {
                if (typeof data === 'function') {
                    callback = data;
                    data = undefined;
                }
                new CrossAjax(null, 'post', {url: url, data: data, callback: callback});
            } else {
                jQuery.post(url, data, callback);
            }
        };
    
        var CrossAjax = function (ele, method, opt) {
            this.self = ele;
            this.settings = opt;
            this.method = method;
            this.crossAjax();
        };
    
        CrossAjax.DEFAULT = {
            xhrFields: {
                withCredentials: true
            },
            crossDomain: true
        };
    
        CrossAjax.prototype = {
            crossAjax: function () {
                var that = this;
                that.optInit();
    
                var self = that.self, response, isLoad = that.isLoad || false;
                var callback = that.settings.callback;
                var url = that.settings.url;
    
                var off = url.indexOf(" "), selector;
                if (off >= 0) {
                    selector = url.slice(off, url.length);
                    url = url.slice(0, off);
                    that.option.url = url;
                }
    
                console.log(that.option);
    
                jQuery.ajax(that.option).done(function (responseText) {
                    if (isLoad) {
                        // Save response for use in complete callback
                        response = arguments;
    
                        self.html(selector ?
                            // If a selector was specified, locate the right elements in a dummy div
                            // Exclude scripts to avoid IE 'Permission Denied' errors
                            jQuery("<div>").append(jQuery.parseHTML(responseText)).find(selector) :
    
                            // Otherwise use the full result
                            responseText);
                    }
                }).complete(function (jqXHR, status) {
                    if (isLoad) {
                        callback.apply(this, arguments);
                        self.each(callback, response || [jqXHR.responseText, status, jqXHR]);
                    }
                });
            },
            optInit: function () {
                //ajax参数初始化
                var that = this, settings = that.settings;
                var url = settings.url, method = that.method || 'get', data = settings.data, callback = settings.callback;
    
                var isLoad = method === 'load';
                that.isLoad = isLoad;
    
                var type = method === 'get' ? 'GET' : 'POST';
                if (isLoad) {
                    type = data && typeof data === 'object' ? 'POST' : 'GET';
                }
    
                var opt = {
                    url: url,
                    type: type,
                    dataType: isLoad ? 'html' : 'json',
                    data: data
                };
    
                if (!isLoad) {
                    opt.success = callback;
                }
    
                that.option = $.extend({}, CrossAjax.DEFAULT, opt);
            }
        };
    
    })(jQuery, window);

转载于:https://my.oschina.net/doubleTing/blog/3006364

[2019_Python_]: https://my.oschina.net/u/2663968/blog/3061697
[hot3.png]: /images/20220113/d2480a249dc34e37bcef0fed3e0446dc.png