I found a solution to the 400 I was getting.
Because we are passing the whole thing through a proxy, it must be decoded,
broken into parts and re-encoded. There is a much more efficient way to do
this, but it was what I worked out for a very rough cut.
Code snippet below:
String dataUrl = request.getParameter("dataUrl");
dataUrl = URLDecoder.decode(dataUrl, Charset.defaultCharset()
.name());
String baseUrl = StringUtils.substringBefore(dataUrl, "?");
baseUrl += "?";
dataUrl = StringUtils.substringAfter(dataUrl, "?");
String[] queryParts = StringUtils.split(dataUrl, "&");
for (String currentPart : queryParts) {
String[] parmParts = new String[] {
StringUtils.substringBefore(currentPart, "=") +
"=",
StringUtils.substringAfter(currentPart, "=") };
baseUrl += StringUtils.endsWith(baseUrl, "?")? parmParts[0] :
"&" + parmParts[0];
baseUrl += URLEncoder.encode(parmParts[1], Charset
.defaultCharset().name());
}
dataUrl = baseUrl;
URL obj = new URL(dataUrl);
HttpURLConnection con = (HttpURLConnection) obj.openConnection();
// optional default is GET
con.setRequestMethod("GET");
con.setDoOutput(true);
con.connect();
int responseCode = con.getResponseCode();
/*--SNIP!--*/
-----Original Message-----
From: Mark Horninger
Sent: Thursday, July 30, 2015 8:54 AM
To: [email protected]
Subject: Solr throws 400 from proxy but returns fine from browser.
Hi,
I am trying to work around a CORS issue on my app server side by standing up a
proxy jsp in order to talk to Solr directly. It's really just a request
forwarder at this point in time. The problem is that the same query I run
through the proxy works fine through the browser, but when I run it in the
proxy it always returns a 400.
I've tried to do some initial research, but I am coming up empty. Can any one
please shed some light on the situation?
Some code snippets:
JS XMLHTTPReq call:
var queryStr = '(Line1:Tom OR Line2:Tom OR Line3:Tom)'; ...
var dataUrl = 'http://[snip!]:8983/solr/[snip!]/query?&q=' + queryStr +
'&fl=Field0, Field1+, Line2, Line3, Line4, Line5, Line6, Line7, Field8, Field9,
Field10 ...';
var strURL = 'proxy.jsp?dataUrl=' + encodeURIComponent(dataUrl);
var xmlHttpReq = false;
if (window.XMLHttpRequest) {
xmlHttpReq = new XMLHttpRequest();
} else if (window.ActiveXObject) {
xmlHttpReq = new ActiveXObject("Microsoft.XMLHTTP");
}
xmlHttpReq.open('GET', strURL, true);
xmlHttpReq.setRequestHeader('Content-Type',
'application/x-www-form-urlencoded');
xmlHttpReq.onreadystatechange = function() {
if (xmlHttpReq.readyState == 4) {
var temp = xmlHttpReq.responseText;
var refinedData = JSON.stringify(JSON.parse(temp).response.docs);
And the proxy call:
String dataUrl = request.getParameter("dataUrl");
dataUrl = URLDecoder.decode(dataUrl);
URL obj = new URL(dataUrl);
HttpURLConnection con = (HttpURLConnection) obj.openConnection();
// optional default is GET
con.setRequestMethod("GET");
con.setDoOutput(true);
con.setRequestProperty("Accept", "application/json");
int responseCode = con.getResponseCode();
I'm not sure why exactly this call is failing with a 400. Any help that could
be provided would be welcomed.
Thanks in advance!
-Mark
[GrayHair]
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