Chantal Ackermann created SOLR-11760:
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Summary: Accept Header is not honored / Errors
Key: SOLR-11760
URL: https://issues.apache.org/jira/browse/SOLR-11760
Project: Solr
Issue Type: Bug
Security Level: Public (Default Security Level. Issues are Public)
Components: Response Writers
Affects Versions: 6.6
Reporter: Chantal Ackermann
Priority: Minor
We generally request JSON from SOLR, via HTTP with {{wt=json}} (without using a
client impl).
In certain error cases, however, no JSON is returned but XML, most likely
because the request handler that understands the parameter {{wt=json}} is not
even executed if the error is a fundamental one. It would be nice if in this
case the `Accept:application/json` header could be honored.
{code}
$ http http://localhost:8983/solr/offers_gb/select q==*:* wt=json rows=1
Accept:"application/json" -v
POST /solr/offers_gb/select?q=%2A%3A%2A HTTP/1.1
Accept: application/json
Accept-Encoding: gzip, deflate
Connection: keep-alive
Content-Length: 27
Content-Type: application/json
Host: localhost:8983
User-Agent: HTTPie/0.9.4
{
"rows": "1",
"wt": "json"
}
HTTP/1.1 400 Bad Request
Content-Length: 525
Content-Type: application/xml; charset=UTF-8
<?xml version="1.0" encoding="UTF-8"?>
<response>
<lst name="responseHeader"><int name="status">400</int><int
name="QTime">0</int><lst name="params"><str name="q">*:*</str><str
name="json">{"wt": "json", "rows": "1"}</str></lst></lst><lst name="error"><lst
name="metadata"><str
name="error-class">org.apache.solr.common.SolrException</str><str
name="root-error-class">org.apache.solr.common.SolrException</str></lst><str
name="msg">Unknown top-level key in JSON request : wt</str><int
name="code">400</int></lst>
</response>
{code}
As opposed to:
{code}
$ http http://localhost:8983/solr/offers_gb/select q==bla:* wt==json rows==1
Accept:"application/json" -v
GET /solr/offers_gb/select?q=bla%3A%2A&wt=json&rows=1 HTTP/1.1
Accept: application/json
Accept-Encoding: gzip, deflate
Connection: keep-alive
Host: localhost:8983
User-Agent: HTTPie/0.9.4
HTTP/1.1 400 Bad Request
Cache-Control: no-cache, no-store
Content-Length: 282
Content-Type: application/json; charset=UTF-8
ETag: "1605105208b"
Expires: Sat, 01 Jan 2000 01:00:00 GMT
Last-Modified: Wed, 13 Dec 2017 17:56:18 GMT
Pragma: no-cache
{
"error": {
"code": 400,
"metadata": [
"error-class",
"org.apache.solr.common.SolrException",
"root-error-class",
"org.apache.solr.common.SolrException"
],
"msg": "undefined field bla"
},
"responseHeader": {
"QTime": 0,
"params": {
"q": "bla:*",
"rows": "1",
"wt": "json"
},
"status": 400,
"zkConnected": true
}
}
{code}
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