2013年10月30日 · A 400 means that the request was malformed. In other words, the data stream sent by the client to the server didn't follow the rules. In the case of a REST API with a JSON …

2012年2月19日 · These caused java.io.IOException Server returned HTTP response code: 400 in the following code: java.net.URL url = new URL(urlString); java.io.InputStream in = …

2016年3月6日 · You missed the .git part, which is important. The url you are adding corresponds to the web page you view on GitHub, not the git repository.

2016年12月30日 · The currently accepted solution is misleading.. According to the official documentation, adding the transports: [ 'websocket' ] option effectively removes the ability to …

Change your return type to ResponseEntity<>, and then you can use the below for 400: return new ResponseEntity<>(HttpStatus.BAD_REQUEST); And for a correct request: return new …

2014年12月21日 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about …

2018年6月6日 · Looks like you are trying to obtain an OAuth 2.0 access token using the client_credientials grant. This is described in RFC6749

2017年6月23日 · For every post request, the client first sends an OPTIONS request to check whether the server is ready to accept the connection.

2023年3月6日 · Apart from what is in the accepted answer, there are many other cases where a 400 could happen because of validation issues. For example, I got 400 (from the chat …

2020年6月11日 · I have been trying to amend my snippet in Python, but to no avail so far. Once I run it, the following message gets populated: elasticsearch.exceptions.RequestError: …