angular.js - Data format for angular submission form

Question

This is how I submit the form

$http({
    headers: {
        'Content-Type': 'application/x-www-form-urlencoded'
    },
    method: 'POST',
    url: url,
    data: {
        type: 1
    }
})

Why does my server receive something like this?

{ '{"type":1}': '' }

Answer 1

Problem solved
Reason:
By default, jQuery transmits data using Content-Type: x-www-form-urlencoded and the familiar foo=bar&baz=moe serialization. AngularJS, however, transmits data using Content-Type: application/json and { "foo": "bar ", "baz": "moe" } JSON serialization

By default, jQuery transmits data using Content-Type: x-www-form-urlencodedand and a sequence similar to "foo=bar&baz=moe", whereas AngularJS, transmits data using Content-Type: application/json and { "foo ": "bar", "baz": "moe" } Such json sequence.

Solution

.config(function($httpProvider) {
    $httpProvider.defaults.headers.put['Content-Type'] = 'application/x-www-form-urlencoded';
    $httpProvider.defaults.headers.post['Content-Type'] = 'application/x-www-form-urlencoded';

    // Override $http service's default transformRequest
    $httpProvider.defaults.transformRequest = [function(data) {
        /**
         * The workhorse; converts an object to x-www-form-urlencoded serialization.
         * @param {Object} obj
         * @return {String}
         */
        var param = function(obj) {
            var query = '';
            var 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;
        };

        return angular.isObject(data) && String(data) !== '[object File]'
                ? param(data)
                : data;
    }];
})

Answer 2

Maybe you are used to using jquery,
jquery encapsulates the query_string operation
Just add this code to angular and change the example name

APP.config(['$httpProvider',function($httpProvider) {

            $httpProvider.defaults.headers.post['Content-Type'] = 'application/x-www-form-urlencoded';
             // Override $http service's default transformRequest
            $httpProvider.defaults.transformRequest = [function(data) {
                /**
                 * The workhorse; converts an object to x-www-form-urlencoded serialization.
                 * @param {Object} obj
                 * @return {String}
                 */
                var param = function(obj) {
                    var query = '';
                    var 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;
                };

                return angular.isObject(data) && String(data) !== '[object File]'
                        ? param(data)
                        : data;
            }];


        }]);

Answer 3

1. Read the official documentation of angularjs to understand its usage. It seems that the header of $http is a little different.
2. Download the fiddler tool and view information such as request headers and params.

Answer 4

The server cannot directly use $_REQUEST/$_POST to obtain it, but needs to use:
$params = json_decode(file_get_contents('php://input'),true);

To get submission data