Content-Type header [application/x-www-form-urlencoded] is not supported on Elasticsearch

ElasticsearchCurlMime TypesContent TypeHttp Put

Elasticsearch Problem Overview

I used to have ElasticSearch 5.2, and just upgraded to 6.0.

I am trying to create an index template following guide here, but got error

Content-Type header [application/x-www-form-urlencoded] is not supported

My query is

curl -X PUT localhost:9200/_template/template_1 -d '
{
  "index_patterns": ["te*", "bar*"],
  "mappings": {
    "type1": {
      "properties": {
        "host_name": {
          "type": "keyword"
        }
      }
    }
  }
}'

Elasticsearch Solutions

Solution 1 - Elasticsearch

To fix this, add curl option -H 'Content-Type: application/json'

This error is due to strict content-type checking introduced in ElasticSearch 6.0, as explained in this post

> Starting from Elasticsearch 6.0, all REST requests that include a body must also provide the correct content-type for that body.

Solution 2 - Elasticsearch

The solution is to add Content-Type: application/json header

curl -XPUT 'localhost:9200/_template/template_1' \
  -H 'Content-Type: application/json' \
  -d '**your query**'

Solution 3 - Elasticsearch

"{ \"name\": { \"first\": {} }, \"address\": [ { \"address1\":\"lane\" } ] } "

In Windows, when you give JSON as a parameter, use double quotes only. Use escape character.

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Content TypeOriginal AuthorOriginal Content on Stackoverflow
QuestionBarry LeishmanView Question on Stackoverflow
Solution 1 - Elasticsearchkgf3JfUtWView Answer on Stackoverflow
Solution 2 - ElasticsearchZ.LIView Answer on Stackoverflow
Solution 3 - Elasticsearchcharlie9526View Answer on Stackoverflow