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[DOCS] Low Level REST Client should emphasize ContentType (#22940)

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This adds a callout to note that the Low Level REST Client example sets the `ContentType` explicitly and that users should do the same.
This commit is contained in:
Chris Earle 2017-02-03 19:49:35 -05:00 committed by GitHub
parent 39e7c30912
commit dabc51f988
1 changed files with 8 additions and 2 deletions
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10
docs/java-rest/usage.asciidoc
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@ -233,15 +233,19 @@ HttpEntity entity = new NStringEntity(
" \"post_date\" : \"2009-11-15T14:12:12\",\n" +
" \"message\" : \"trying out Elasticsearch\"\n" +
"}", ContentType.APPLICATION_JSON);
Response indexResponse = restClient.performRequest(
"PUT",
"/twitter/tweet/1",
Collections.<String, String>emptyMap(),
entity);
--------------------------------------------------
IMPORTANT: The `ContentType` that you specify for the `HttpEntity` is important
because it will be used to set the `Content-Type` header so that Elasticsearch
can properly parse the content. Future releases of Elasticsearch will require this
to be set properly.
Note that the low-level client doesn't expose any helper for json marshalling
and un-marshalling. Users are free to use the library that they prefer for that
purpose.
@ -262,6 +266,7 @@ The following is a basic example of how async requests can be sent:
--------------------------------------------------
int numRequests = 10;
final CountDownLatch latch = new CountDownLatch(numRequests);
for (int i = 0; i < numRequests; i++) {
restClient.performRequestAsync(
"PUT",
@ -283,6 +288,7 @@ for (int i = 0; i < numRequests; i++) {
}
);
}
//wait for all requests to be completed
latch.await();