Java request to Spring endpoint

Question

I am trying to make a request frome a Java app to another app that is written in Spring. Right now I am getting a 400.

This is the Spring endpoint I am trying to reach:

@GetMapping(value="/tts/{sessionid}/{fileId}/{text}")
ResponseEntity<byte[]> getAudioFile(
        @ApiParam(value = "Wave SessionId", required = true) @PathVariable String sessionid,
        @ApiParam(value = "File id", required = true) @PathVariable Integer fileId,
        @RequestParam(value = "Text", required = true) String text
) throws Exception

and here is my attempt to make a valid request:

    private void getTtsWave(String waveId, String token, int file_id, String tts_text) {        
        try {
            URL url = new URL(this.recorderendpoint + "/api/tts/" + waveId + "/" + String.valueOf(file_id) + "/{text}?Text=" + tts_text);
            HttpURLConnection con = (HttpURLConnection) url.openConnection();
            con.setRequestMethod("GET");
            con.setRequestProperty("Authorization", "Bearer " + token);
            int status = con.getResponseCode();
System.out.println(status);
            if (status == 200) {
                BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
                String inputLine;
                StringBuffer content = new StringBuffer();
                while ((inputLine = in.readLine()) != null) {
                    content.append(inputLine);
                }
                
                if (content != null && !content.equals("")) {
                    System.out.println(content);
                }
                
                in.close();
            }
        } catch (Exception e) {
            log("getTtsWave error: " + e, e.toString()); 
        }
    }

Why you have {text} in the end of your url since it is not treated as a path param? Maybe this is the error? — pleft
– pleft, Commented Aug 31, 2021 at 9:12
as mentioned above text is a required param, so its showing 400 bad request error — Senthil
– Senthil, Commented Aug 31, 2021 at 9:14
{text} in new URL() is a string literal but in Controller, it is a path Variable. so you need to change that to text. — Sagar Kharab
– Sagar Kharab, Commented Aug 31, 2021 at 9:22

pleft · Accepted Answer · 2021-08-31 09:20:44Z

@GetMapping(value="/tts/{sessionid}/{fileId}/{text}")
ResponseEntity<byte[]> getAudioFile

expects that {text} is a @PathVariable but in your getTtsWave method you are treating it as a "static" part of your url:

this.recorderendpoint + "/api/tts/" + waveId + "/" + String.valueOf(file_id) + "/{text}?Text=" + tts_text

Moreover in your getAudioFile you also have a parameter:

@RequestParam(value = "Text", required = true) String text

This one parameter is the required request param (not path param)

So I believe you should change to:

@GetMapping(value="/tts/{sessionid}/{fileId}")
ResponseEntity<byte[]> getAudioFile(
        @ApiParam(value = "Wave SessionId", required = true) @PathVariable String sessionid,
        @ApiParam(value = "File id", required = true) @PathVariable Integer fileId,
        @RequestParam(value = "Text", required = true) String text
) throws Exception

and construct your URL as:

this.recorderendpoint + "/api/tts/" + waveId + "/" + String.valueOf(file_id) + "?Text=" + tts_text

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