The 'Content-Type' header cannot be defined for HTTP GET requests

I am currently working on setting up my GET requests to include the specific header:

Content-Type: application/json

Based on information from the documentation, I need to make the following adjustment:

To customize these defaults, you can add or remove properties from the configuration objects. To include headers for an HTTP method other than POST or PUT, simply create a new object with the lowercase HTTP method as the key, for example:

$httpProvider.defaults.headers.get = { 'My-Header' : 'value' }

However, when I try to implement this in my app.ts file, it does not compile:

mainapp.config(($httpProvider: ng.IHttpProvider) => {
        $httpProvider.defaults.headers.get = {"Content-Type" : "application/json";
    });

The error message indicates that the type of get should be string|(() => string).

After attempting to adjust by using:

mainapp.config(($httpProvider: ng.IHttpProvider) => {
    $httpProvider.defaults.headers.get = "Content-Type: application/json";
});

Unfortunately, this modification did not impact my GET requests at all.

Any assistance would be greatly appreciated.

Answer №1

My goal is to configure my GET requests with the following header:

Content-Type: application/json

This seems contradictory. Since a GET request typically does not include a body, specifying a content type may not be necessary.

Perhaps what you meant was to set the Accept header to application/json instead. This would indicate to the server how you expect the response from your GET request to be formatted.

If you're wondering why your code isn't working, it appears that there is a missing curly brace in your syntax. While you can try setting the header this way as a workaround, it's generally not recommended. Ideally, you should address the root issue which involves a server requiring a Content-Type header for GET requests.

if (!$httpProvider.defaults.headers.get) {
    $httpProvider.defaults.headers.get = { };
}
$httpProvider.defaults.headers.get["Content-Type"] = "application/json";

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