I have the following curl request:
curl -X GET http://hostname:4444/grid/api/hub -d '{"configuration":["slotCounts"]}'
which returns a JSON object.
How can I make such request and get the response in Java? I tried this:
URL url = new URL("http://hostname:4444/grid/api/hub -d '{\"configuration\":[\"slotCounts\"]}'");
try (BufferedReader reader = new BufferedReader(new InputStreamReader(
url.openStream(), "UTF-8"))) {
for (String line; (line = reader.readLine()) != null;) {
System.out.println(line);
}
}
But it returns an exception:
Caused by: java.io.IOException: Server returned HTTP response code: 400 for URL: http://hostname:4444/grid/api/hub -d '{"configuration":["slotCounts"]}'
Based on the comments, managed to solve it myself.
private static class HttpGetWithEntity extends
HttpEntityEnclosingRequestBase {
public final static String METHOD_NAME = "GET";
@Override
public String getMethod() {
return METHOD_NAME;
}
}
private void getslotsCount() throws IOException,
URISyntaxException {
HttpGetWithEntity httpEntity = new HttpGetWithEntity();
URL slots = new URL("http://hostname:4444/grid/api/hub");
httpEntity.setURI(pendingRequests.toURI());
httpEntity
.setEntity(new StringEntity("{\"configuration\":[\""
+ PENDING_REQUEST_COUNT + "\"]}",
ContentType.APPLICATION_JSON));
HttpClient client = HttpClientBuilder.create().build();
HttpResponse response = client.execute(getPendingRequests);
BufferedReader rd = new BufferedReader(new InputStreamReader(response
.getEntity().getContent()));
// At this point I can just get the response using readLine()
System.out.println(rd.readLine());
}
That's not how sending data in Java works. The -d flag is for the CURL CLI only. In Java you should use a library like Apache HTTP Client: https://stackoverflow.com/a/3325065/5898512
Then parse the result with JSON: https://stackoverflow.com/a/5245881/5898512
As per your exception/error log, it clearly says that the service http://hostname:4444/grid/api/hub
is receiving bad request(Status code 400).
And i think you need to check the service to which you are hitting and what exactly it accepts. Ex: the service may accept only application/json
/ application/x-www-form-urlencoded
or the parameter to service that expecting but you are not sending that.
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