Drupal-8 restful webservices only delivering HTML - web-services

Question

I have a freshly configured Drupal 8.0 beta 12 with HAL, HTTP Basic Authentication, RESTful Web Services and Serialization modules enabled. The installation is in a subfolder (D8_beta12). When I access the web services for the first page created (id=1) like
curl -H "Accept: application/json" --request GET http://localhost/d8_beta12/node/1
DRUPAL only delivers HTML format of the node. I have tried to configure via REST UI to JSON only but that didn't help. DRUPAL would answer the requests even if the web services are disabled.
Its probably the user, who's sitting in front of DRUPAL, who is the problem (me) - but I don't get it. Any help deply appreciated - I have been working hours on this, reviewing all of DRUPALs forums and here as well.
Thanks,
Andi

Answer 1

I was getting the same and found a note about it https://drupal.stackexchange.com/questions/161421/d8-services-errors-no-route-found-for-the-specified-formats
So I updated the request to :
node/1?_format=json
Update: Found note about it in a webchick slideshare:
http://www.slideshare.net/webchickenator/plain-english-guide-to-drupal-8-criticals/51

Answer 2

Please try replacing aaplication/json with application/hal+json.
curl -H "Accept: application/hal+json" --request GET http://localhost/d8_beta12/node/1
You may also like to go through this precise tutorial.

Answer 3

from postman if you are trying or from other rest api you are trying make sure you follow below format
http://localhost/da/drupal819/node/253?_format=json
output
{
"nid": [
{
"value": "253"
}
],
"uuid": [
{
"value": "6f255c93-6886-4c38-b4cb-c40469073d1c"
}
],
"vid": [
{
"value": "253"
}
],
"langcode": [
{
"value": "en"
}
],
"type": [
{
"target_id": "article",
"target_type": "node_type",
"target_uuid": "ee2c7b5e-d57e-4714-9193-daff153c63ff"
}
],
"title": [
{
"value": "Commodo Pagus Quia"
}
],
"uid": [
{
"target_id": "14",
"target_type": "user",
"target_uuid": "0b8602ec-8003-4e3d-8406-5bd53e47df71",
"url": "/da/drupal819/user/14"
}
],
"status": [
{
"value": "1"
}
],
"created": [
{
"value": "1474126412"
}
],
"changed": [
{
"value": "1474175616"
}
],
"promote": [
{
"value": "1"
}
],
"sticky": [
{
"value": "0"
}
],
"revision_timestamp": [
{
"value": "1474175616"
}
],
"revision_uid": [
{
"target_id": "14",
"target_type": "user",
"target_uuid": "0b8602ec-8003-4e3d-8406-5bd53e47df71",
"url": "/da/drupal819/user/14"
}
],
"revision_log": [],
"revision_translation_affected": [
{
"value": "1"
}
],
"default_langcode": [
{
"value": "1"
}
],
"path": [],
"body": [
{
"value": "Duis revitas melior paulatim quibus quidne rusticus velit vereor.\n\n",
"format": "plain_text",
"summary": "Duis vitas melior paulatim quibus quidne rusticus velit vereor.\n\n"
}
],
"comment": [
{
"status": "2",
"cid": "165",
"last_comment_timestamp": "1474175616",
"last_comment_name": "",
"last_comment_uid": "13",
"comment_count": "1"
}
],
"field_image": [
{
"target_id": "248",
"alt": "Diam iriure neo quadrum refero valetudo verto ymo.",
"title": "Os patria refoveo si valetudo.",
"width": "225",
"height": "526",
"target_type": "file",
"target_uuid": "02050136-7a51-4183-9c28-7d7cc793183a",
"url": "http://localhost/da/drupal819/sites/default/files/2016-09/gen8C.tmp.jpeg"
}
],
"field_tags": []
}
you can try other format as well
1) http://localhost/da/drupal819/node/253?_format=hal_json
2) http://localhost/da/drupal819/node/253?_format=xml
to support all above format you need to make that format support from rest configuration from admin panel
and even you need to provide get permission for rest call from permission page for anonymous user.