有人能告诉我为什么下面的语句没有将post数据发送到指定的url吗?url被调用，但在服务器上，当我打印$_POST -我得到一个空数组。如果我在控制台中打印消息，然后将其添加到数据-它显示了正确的内容。
$http.post('request-url', { 'message' : message });
我也尝试过将数据作为字符串(具有相同的结果):
$http.post('request-url', "message=" + message);
当我以以下格式使用它时，它似乎正在工作:
$http({
method: 'POST',
url: 'request-url',
data: "message=" + message,
headers: {'Content-Type': 'application/x-www-form-urlencoded'}
});
但是是否有一种方法可以用$http.post() -我总是必须包括头以便它工作吗?我相信上面的内容类型是指定发送数据的格式，但我可以把它作为javascript对象发送吗?
只是提出一个现代化版本的@FelipeMiosso的答案:
.config(["$httpProvider", function ($httpProvider) {
function buildKey(parentKey, subKey) {
return parentKey + "[" + subKey + "]";
}
function buildObject(key, value) {
var object = {};
object[key] = value;
return object;
}
function join(array) {
return array.filter(function (entry) {
return entry;
}).join("&");
}
function arrayToQueryString(parentKey, array) {
return join(array.map(function (value, subKey) {
return toQueryString(buildObject(buildKey(parentKey, subKey), value));
}));
}
function objectToQueryString(parentKey, object) {
return join(Object.keys(object).map(function (subKey) {
return toQueryString(buildObject(buildKey(parentKey, subKey), object[subKey]));
}));
}
function toQueryString(input) {
return join(Object.keys(input).map(function (key) {
var value = input[key];
if (value instanceof Array) {
return arrayToQueryString(key, value);
} else if (value instanceof Object) {
return objectToQueryString(key, value);
} else if (undefined !== value && null !== value) {
return encodeURIComponent(key) + "=" + encodeURIComponent(value);
} else {
return "";
}
}));
}
function isQueryStringEligible(input) {
return null !== input && "object" === typeof input && "[object File]" !== String(input);
}
var interceptor = [function () {
return {
request: function (config) {
if (0 <= ["post", "put", "patch"].indexOf(config.method.toLowerCase()) && isQueryStringEligible(config.data)) {
config.headers["Content-Type"] = "application/x-www-form-urlencoded;charset=utf-8";
config.data = toQueryString(config.data);
}
return config;
}
};
}];
$httpProvider.interceptors.push(interceptor);
}])
ES6版本:
.config(["$httpProvider", function ($httpProvider) {
"use strict";
const buildKey = (parentKey, subKey) => `${parentKey}[${subKey}]`;
const buildObject = (key, value) => ({ [key]: value });
const join = (array) => array.filter((entry) => entry).join("&");
const arrayToQueryString = (parentKey, array) =>
join(array.map((value, subKey) =>
toQueryString(buildObject(buildKey(parentKey, subKey), value))));
const objectToQueryString = (parentKey, object) =>
join(Object.keys(object).map((subKey) =>
toQueryString(buildObject(buildKey(parentKey, subKey), object[subKey]))));
const toQueryString = (input) => join(Object.keys(input).map((key) => {
const value = input[key];
if (value instanceof Array) {
return arrayToQueryString(key, value);
} else if (value instanceof Object) {
return objectToQueryString(key, value);
} else if (undefined !== value && null !== value) {
return `${encodeURIComponent(key)}=${encodeURIComponent(value)}`;
} else {
return "";
}
}));
const isQueryStringEligible = (input) =>
null !== input && "object" === typeof input && "[object File]" !== String(input);
const interceptor = [() => ({
request(config) {
if (0 <= ["post", "put", "patch"].indexOf(config.method.toLowerCase()) && isQueryStringEligible(config.data)) {
config.headers["Content-Type"] = "application/x-www-form-urlencoded;charset=utf-8";
config.data = toQueryString(config.data);
}
return config;
}
})];
$httpProvider.interceptors.push(interceptor);
}])
It's not angular's fault. Angular is designed to work in JSON world. So when $http service send AJAX request, it send all your data as a payload, not as form-data so that your backend application can handle it. But jQuery does some things internally. You instruct jQuery's $ajax module to bind form-data as JSON but before sending AJAX request, it serialized JSON and add application/x-www-form-urlencoded header. This way your backend application able to received form-data in form of post parameters and not JSON.
但是你可以修改angular $http服务的默认行为
添加标题
序列化json
$httpParamSerializerJQLike是angular的内置服务，它以同样的方式序列化json。jQuery的参数。
$http({
method: 'POST',
url: 'request-url',
data: $httpParamSerializerJQLike(json-form-data),
headers: {
'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8;'
}
});
如果你需要一个插件先将表单数据序列化成JSON，可以使用这个插件https://github.com/marioizquierdo/jquery.serializeJSON
刚从angular 1.2更新到1.3，在代码中发现了一个问题。转换资源将导致一个无限循环，因为(我认为)$promise再次持有相同的对象。也许它会帮助到某人……
我可以解决这个问题:
[...]
/**
* The workhorse; converts an object to x-www-form-urlencoded serialization.
* @param {Object} obj
* @return {String}
*/
var param = function (obj) {
var query = '', name, value, fullSubName, subName, subValue, innerObj, i;
angular.forEach(obj, function(value, name) {
+ if(name.indexOf("$promise") != -1) {
+ return;
+ }
value = obj[name];
if (value instanceof Array) {
for (i = 0; i < value.length; ++i) {
[...]
