使用 JSON 在 CakePHP 中设置 Content-Type 标头

Question

I need to set Content-Type: application/json; charset=UTF-8 Content-Type: application/json; charset=UTF-8 in a data view from CakePHP. I've already tried to set $this->response->header('Content-Type', 'application/json; charset=UTF-8'); but that doesn't change anything. It still just output Content-Type: application/json .

Answer 1

its in the code (CakeResponse, line 447):

if (strpos($this->_contentType, 'text/') === 0) {
    $this->header('Content-Type', "{$this->_contentType}; charset={$this->_charset}");
} else {
    $this->header('Content-Type', "{$this->_contentType}");
}

so only for "text/..." the charset will be appended. I dont know why, though...

Answer 2

Funny, I had this same problem just last night. It seems that UTF-8 is the default JSON encoding and that's probably why the header isn't sent by Cake (but I couldn't find reference to this decision either way).

Solution for me was to use a php's json_decode() -- it should decode the string properly. I had lots of French accents showing up as java/C unicode, eg \é and thought it was a header problem. But after running the string through json_decode() the accented characters all showed correctly.

Marks' link the comments has good info too.

Answer 3

for this you can place this in the controller / function:

json_encode($updown_rs);

and in the view file (views/check_json):

var json_object = $.parseJSON(response);   

Answer 4

application/json doesn't have a charset parameter. There's no point in trying to set one. See http://rfc7159.net/rfc7159#ianacons .

Answer 5

我正在使用 cake 2.10.11 并在 json 布局中使用了此代码：

$this->response->charset('utf-8');

Answer 6

You can do it by using $this->RequestHandler->ext = 'json'; in your beforefilter method

check out the following example

public function beforeFilter(){
    parent::beforeFilter();
    $this->RequestHandler->ext = 'json';
}

public function index()
{
    $this->autoRender = false;
    $output = array(
      array('value' =>'first value'),
      array('value' =>'second value'),
    );
    $json = json_encode($output);
    $this->response->body($json);
}