php 在 CodeIgniter 中检索 JSON POST 数据
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Retrieve JSON POST data in CodeIgniter
提问by Abhinav
I have been trying to retrieve JSON data from my php file.Its giving me a hard time.This is my code
我一直在尝试从我的 php 文件中检索 JSON 数据。这给我带来了困难。这是我的代码
Code in my VIEW:
我的 VIEW 中的代码：
var productDetails = {'id':ISBNNumber,'qty':finalqty,'price':finalprice,'name':bookTitle};
var base_url = '<?php echo site_url() ?>';
$.ajax({
url: "<?php echo base_url() ?>index.php/user/Add_to_cart/addProductsToCart",
type: 'POST',
data:productDetails,
dataType:'JSON',
});
Trying to retrieve in my Controller:
试图在我的控制器中检索：
echo $this->input->post("productDetails");
Outputs Nothing.
什么都不输出。
Here are my headers:
这是我的标题：
Remote Address:[::1]:80
Request URL:http://localhost/CI/index.php/user/Add_to_cart/addProductsToCart
Request Method:POST
Status Code:200 OK
Request Headersview source
Accept:application/json, text/javascript, */*; q=0.01
Accept-Encoding:gzip, deflate
Accept-Language:en-US,en;q=0.8,fr;q=0.6
Connection:keep-alive
Content-Length:52
Content-Type:application/x-www-form-urlencoded; charset=UTF-8
Cookie:ci_session=3E5SPro57IrJJkjs2feMNlmMrTqEXrTNN8UyEfleeothNnHwNxuCZDSx4a7cJZGjj7fyr2KLpj%2BPNJeGRSzSPVmcFHVEdhSk4D47ziOl4eZcTUAZlQrWa3EYIeQJVWxMpiGZS26MEfbSXNmfel9e8TcsJTreZHipvfisrJovbXEAW4Uv%2BwrJRep1KCi1MMaDCVJb9UEinRVcDtYe%2F86jhn7kOj4kraVmVzx%2FsOaO0rAxLyAUtez%2Feaa4zBwpN3Td153sAoIb3WxVHoEj2oKyH5prVHigbIhIBR6XZqjBkM6hjBuoD2OSZ2wgLbp9DEENMoqui4WYyHROBuS2DYiJajblcS0KiFga5k%2FQOODvE7p6n%2BozN5ciDliVjJ4PnJ5PD1GaPEmec5%2FbQSlOHYWZk%2F2Blzw3Nw0EtLL7wKDzzQY%3Df645c36bb3548eb8de915b73f8763d97a47783ce
Host:localhost
Origin:http://localhost
Referer:http://localhost/CI/index.php/user/view_available_books/viewAvailableBooks/5
User-Agent:Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.111 Safari/537.36
X-Requested-With:XMLHttpRequest
**Form Dataview** sourceview URL encoded
id:234
qty:1
price:0.00
name:dasdadsd2q3e!@!@@
My Response which I can See in Developer tools:
我可以在开发人员工具中看到的响应：
Array
(
[id] => 234
[qty] => 1
[price] => 0.00
[name] => dasdadsd2q3e!@!@@
)
But in browser, the output is nothing. I am trying to solve it for more than 4 hours now but in vain.
但是在浏览器中，输出什么都没有。我现在试图解决它4个多小时但徒劳无功。
print_r($_POST); // outputs nothing
echo $data = file_get_contents('php://input'); //outputs nothing
echo $id = $this->input->post('productDetails');// outputs nothing
My View Code:
我的查看代码：
<script>
$('#addtoCart').on('click',function(event){
event.preventDefault();
$(this).attr('disabled',"disabled");
finalprice = $.trim($('#price').val());
finalqty = $.trim($('#quantity').val());
var productDetails = JSON.stringify({'id':ISBNNumber,'qty':finalqty,'price':finalprice,'name':bookTitle});
var base_url = '<?php echo site_url() ?>';
// console.log($);
$.ajax({
url: "<?php echo base_url() ?>index.php/user/Add_to_cart/addProductsToCart",
type: 'POST',
contentType: "application/json; charset=utf-8",
data:productDetails,
dataType:'html',
});
});
</script>
Controller Code:
控制器代码：
function addProductsToCart(){
var_dump(json_decode(file_get_contents("php://input")));
print_r($_POST);
// $data = json_decode($_POST["productDetails"]);
// var_dump($data);
// echo $data = file_get_contents('php://input');
// print_r(json_decode($data));
// $id = $this->input->post('id');
// $qty = $this
}
采纳答案by AdrienXL
General method I use for my Ajax Calls in CI :
我在 CI 中用于 Ajax 调用的一般方法：
JS :
JS：
post_array =
{
"myvar" : "value1",
"myvar2": "value2"
}
$.post(baseUrl + "/AjaxController/my_function", post_array,
function(data)
{
var res = jQuery.parseJSON(data);
alert(res.property);
}
Controller :
控制器 ：
public function my_function()
{
$myvar = $this->input->post('myvar');
$myvar2 = $this->input->post('myvar2');
//Stuff
echo json_encode($myobject);
}
回答by jimasun
I had the exact same problem. CodeIgniter doesn't know how to fetch JSON. I first thought is about the encoding Because I use fetch.jsand not jQuery. Whatever I was doing I was getting an notting. $_POSTwas empty as well as $this->input->post(). Here is how I've solved the problem.
我有同样的问题。CodeIgniter 不知道如何获取 JSON。我首先想到的是关于编码 因为我使用fetch.js而不是jQuery. 无论我在做什么，我都得到了一个notting。$_POST也是空的$this->input->post()。这是我解决问题的方法。
Send request (as object prop -- because your js lib might vary):
发送请求（作为对象道具——因为你的 js 库可能会有所不同）：
method: 'POST',
headers: {
'Accept': 'application/json',
'Content-Type': 'application/json'
},
body: JSON.stringify({
ready: 'ready'
})
Node: I encode my data of type
objectintojson.jQuerydoes this by itself when you set thedataType: 'JSON'option.
节点：我将我的类型数据编码
object为json.jQuery当您设置dataType: 'JSON'选项时，它会自行执行此操作。
CodeIgniter (3.1 in my case):
CodeIgniter（在我的例子中是 3.1）：
$stream_clean = $this->security->xss_clean($this->input->raw_input_stream);
$request = json_decode($stream_clean);
$ready = $request->ready;
Note: You need to clean your
$this->input->raw_input_stream. You are not using$this->input->post()which means this is not done automatically by CodeIgniter.
注意：您需要清洁您的
$this->input->raw_input_stream. 您没有使用$this->input->post()这意味着这不是由 CodeIgniter 自动完成的。
As for the response:
至于回应：
$response = json_encode($request);
header('Content-Type: application/json');
echo $response;
Alternatively you can do:
或者你可以这样做：
echo $stream_clean;
Note: It is not required to set the
header('Content-Type: application/json')but I think it is a good practice to do so. Therequestalready set the'Accept': 'application/json'header.
注意：不需要设置，
header('Content-Type: application/json')但我认为这样做是一个很好的做法。在request已经设置了'Accept': 'application/json'头。
So, the trick here is to use $this->input->raw_input_streamand decode your data by yourself.
所以，这里的诀窍是自己使用$this->input->raw_input_stream和解码你的数据。
回答by Erdin? ?orbac?
Although OP seems satisfied, choosen answer doesn't tell us the reason and the real solution . (btw that post_array is not an array it's an object indeed ) @jimasun's answer has the right approach. I will just make things clear and add a solution beyond CI.
虽然 OP 看起来很满意，但选择的答案并没有告诉我们原因和真正的解决方案。（顺便说一句，post_array 不是一个数组，它确实是一个对象）@jimasun 的答案有正确的方法。我只会把事情说清楚，并添加一个超越 CI 的解决方案。
So the reason of problem is ;
所以问题的原因是;
Not CI or PHP, but your server doesn't know how to handle a request which has an application/json content-type. So you will have no $_POST data. Php has nothing to do with this. Read more at : Reading JSON POST using PHP
不是 CI 或 PHP，但您的服务器不知道如何处理具有 application/json 内容类型的请求。所以你将没有 $_POST 数据。PHP 与此无关。阅读更多内容：使用 PHP 读取 JSON POST
And the solution is ; Either don't send request as application/json or process request body to get post data.
解决方案是; 不要将请求作为 application/json 发送或处理请求正文以获取发布数据。
For CI @jimasun's answer is precise way of that.
对于 CI @jimasun 的回答就是准确的方法。
And you can also get request body using pure PHP like this.
您还可以像这样使用纯 PHP 获取请求正文。
$json_request_body = file_get_contents('php://input');
回答by JOSE ANGEL RAMIREZ HERNANDEZ
I had the same problem but I found the solution.
我遇到了同样的问题，但我找到了解决方案。
This is the Json that I am sending [{"name":"JOSE ANGEL", "lastname":"Ramirez"}]
这是我发送的 Json [{"name":"JOSE ANGEL", "lastname":"Ramirez"}]
$data = json_decode(file_get_contents('php://input'), true);
echo json_encode($data);
This code was tested and the result is [{"name":"JOSE ANGEL","lastname":"Ramirez"}]
这段代码经过测试，结果是 [{"name":"JOSE ANGEL","lastname":"Ramirez"}]
回答by Rana Soyab
You only have your own answer.
你只有你自己的答案。
print_r($_POST);
print_r($_POST);
Return :
返回 ：
Array
(
[id] => 234
[qty] => 1
[price] => 0.00
[name] => dasdadsd2q3e!@!@@
)
Then how will you get : echo $id = $this->input->post('productDetails');
那么你将如何获得： echo $id = $this->input->post('productDetails');
You will get id by echo $id = $this->input->post('id');
您将通过以下方式获得 id echo $id = $this->input->post('id');
