AngularJS POST失败:飞行前响应具有无效的HTTP状态代码404

我知道有很多这样的问题,但是我所见的问题都没有解决。我已经使用了至少3个微框架。所有这些都无法执行简单的POST,它应该将数据返回:

angularJS客户端:

var app = angular.module('client', []);

app.config(function ($httpProvider) {

//uncommenting the following line makes GET requests fail as well

//$httpProvider.defaults.headers.common['Access-Control-Allow-Headers'] = '*';

delete $httpProvider.defaults.headers.common['X-Requested-With'];

});

app.controller('MainCtrl', function($scope, $http) {

var baseUrl = 'http://localhost:8080/server.php'

$scope.response = 'Response goes here';

$scope.sendRequest = function() {

$http({

method: 'GET',

url: baseUrl + '/get'

}).then(function successCallback(response) {

$scope.response = response.data.response;

}, function errorCallback(response) { });

};

$scope.sendPost = function() {

$http.post(baseUrl + '/post', {post: 'data from client', withCredentials: true })

.success(function(data, status, headers, config) {

console.log(status);

})

.error(function(data, status, headers, config) {

console.log('FAILED');

});

}

});

SlimPHP服务器:

<?php

require 'vendor/autoload.php';

$app = new \Slim\Slim();

$app->response()->headers->set('Access-Control-Allow-Headers', 'Content-Type');

$app->response()->headers->set('Content-Type', 'application/json');

$app->response()->headers->set('Access-Control-Allow-Methods', 'GET, POST, OPTIONS');

$app->response()->headers->set('Access-Control-Allow-Origin', '*');

$array = ["response" => "Hello World!"];

$app->get('/get', function() use($array) {

$app = \Slim\Slim::getInstance();

$app->response->setStatus(200);

echo json_encode($array);

});

$app->post('/post', function() {

$app = \Slim\Slim::getInstance();

$allPostVars = $app->request->post();

$dataFromClient = $allPostVars['post'];

$app->response->setStatus(200);

echo json_encode($dataFromClient);

});

$app->run();

我已启用CORS,并且GET请求有效。html使用服务器发送的JSON内容进行更新。但是我得到了

XMLHttpRequest无法加载 http:// localhost:8080 / server.php /

post。飞行前的响应具有无效的HTTP状态代码404

每次我尝试使用POST时。为什么?

编辑:根据Pointy的要求 req /</p><p>res标头

回答:

好的,这就是我的解决方法。这都与CORS政策有关。在发布POST请求之前,Chrome正在执行预检OPTIONS请求,服务器应在实际请求之前对其进行处理和确认。现在,这真的不是我想要的那样简单的服务器。因此,重置标头客户端可以防止预检:

app.config(function ($httpProvider) {

$httpProvider.defaults.headers.common = {};

$httpProvider.defaults.headers.post = {};

$httpProvider.defaults.headers.put = {};

$httpProvider.defaults.headers.patch = {};

});

浏览器现在将直接发送POST。希望这对很多人有帮助…我的真正问题是对CORS的了解不足。

链接到一个很好的解释:http :

//www.html5rocks.com/en/tutorials/cors/

以上是 AngularJS POST失败:飞行前响应具有无效的HTTP状态代码404 的全部内容, 来源链接: utcz.com/qa/398018.html

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