将JSON从angular 2发布到php

问题描述

我尝试将数据从angular 2发布到php:

I try to post data from angular 2 to php:

let headers = new Headers();
headers.append('Content-Type', 'application/json');
var order = {'order': this.orders};

this.http.post('http://myserver/processorder.php', JSON.stringify(order), {
    headers: headers
}).subscribe(res => {
    console.log('post result %o', res);
});

在角度2中，只能将字符串发布为数据，而不能发布Json吗?对我来说还可以，但是我很难在php上获取发布的数据.我尝试了$obj = $_POST['order'];

In angular 2 one can only post string as data and not Json? That's ok for me but I struggle to get the posted data on php. I tried $obj = $_POST['order'];

推荐答案

Marc B是正确的，但是正在发生的事情是$ _POST数组将包含一个空值，其键集设置为您要传递的JSON字符串.

Marc B is correct, however what is happening is that the $_POST array will contain an empty value with a key set to the JSON string you are passing...

Array
(
    [{"order":"foobar"}] =>
)

您可以通过使用...获取密钥来抓住"这一点(尽管这是错误的方法).

You "can" grab that (although this would be the wrong approach) by getting the key using...

key($_POST)

例如:

$obj = json_decode(key($_POST));
echo $obj->order;

但是，您可以做的是将数据作为值键对发送:

BUT what you can do is send the data as value key pairs:

let headers = new Headers();
headers.append('Content-Type', 'application/x-www-form-urlencoded; charset=UTF-8');
let order = 'order=foobar';

this.http.post('http://myserver/processorder.php', order, {
    headers: headers
}).subscribe(res => {
    console.log('post result %o', res);
});

然后在PHP中，您可以使用以下方法获取数据:

Then in PHP you can grab the data using:

$_POST['order']

几件事要注意:

• 已将标头Content-Type更改为application/x-www-form-urlencoded(更多内容用于我自己的测试，因为这不会执行任何预检请求)
• 请注意，订单是键值对字符串，而不是JSON
• 请注意，此.http.post中的 order 已按原样传递而没有JSON.stringify

• changed header Content-Type to application/x-www-form-urlencoded (more for my own testing since this doesn't do any preflight requests)
• notice that order is a key value pair string instead of JSON
• notice that order in this.http.post is getting passed as-is without JSON.stringify

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