已拦截跨源请求：同源策略禁止读取位于 http://x.x.x.x:port/api/Person/Update 的远程资源。（原因：CORS 预检通道未成功）。

.config(function($httpProvider) { // CORS post跨域配置$httpProvider.defaults.useXDomain = true;  $httpProvider.defaults.headers.post['Content-Type'] = 'application/x-www-form-urlencoded;charset=utf-8';var param = function(obj) {  // 修改angularjs $http.post的默认传参方式var query = '', name, value, fullSubName, subName, subValue, innerObj, i;for(name in obj) {value = obj[name];if(value instanceof Array) {for(i=0; i<value.length; ++i) {subValue = value[i];fullSubName = name + '[' + i + ']';innerObj = {};innerObj[fullSubName] = subValue;query += param(innerObj) + '&';}}else if(value instanceof Object) {for(subName in value) {subValue = value[subName];fullSubName = name + '[' + subName + ']';innerObj = {};innerObj[fullSubName] = subValue;query += param(innerObj) + '&';}}else if(value !== undefined && value !== null)query += encodeURIComponent(name) + '=' + encodeURIComponent(value) + '&';}return query.length ? query.substr(0, query.length - 1) : query;};$httpProvider.defaults.transformRequest = [function(data) {return angular.isObject(data) && String(data) !== '[object File]' ? param(data) : data;}];delete $httpProvider.defaults.headers.common['X-Requested-With'];
})

header('Access-Control-Allow-Origin: *');//(我不知道这个是怎么配置的，PHP的？)

    <!--跨域..--><httpProtocol><customHeaders><add name="Access-Control-Allow-Origin" value="*" /><!--Content-Type,--><add name="Access-Control-Allow-Headers" value="Origin, X-Requested-With, Content-Type, Accept" /><add name="Access-Control-Allow-Methods" value="GET,POST,PUT, DELETE, OPTIONS" /></customHeaders></httpProtocol></system.webServer>