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Creating session after sending response to client
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Planned maintenance scheduled April 23, 2019 at 23:30 UTC (7:30pm US/Eastern)
Data science time! April 2019 and salary with experience
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I am trying to execute a method(which takes a long time for execution) immediately after sending response from controller without having to keep the client wait for response.
My source code for sending the response is as follows,
@RequestMapping(value = "exportExcelReportService", method = RequestMethod.POST)
@ResponseStatus(value = HttpStatus.OK)
public void exportExcelReportServiceGetJsonObject(@ModelAttribute ReqParam reqParam, HttpServletResponse response)
java.io.PrintWriter wr;
try
wr = response.getWriter();
response.setStatus(HttpServletResponse.SC_OK);
wr.print(response);
wr.flush();
wr.close();
exportDataUsingVMService.getByteArrayForExcelSheet(reqParam);
catch (IOException e)
// TODO Auto-generated catch block
e.printStackTrace();
Over here getByteArrayForExcelSheet will get executed after the response has been sent to client. But I'm unable to create session in this method,
public void getByteArrayForExcelSheet(ReqParam reqParam)
JSONObject jObject = null;
HttpSession httpsession = request.getSession(false);
Where request is autowired like this,
@Autowired
private HttpServletRequest request;
I get exception in getByteArrayForExcelSheet like this,
java.lang.IllegalStateException: Cannot create a session after the response has been committed
java spring spring-mvc
edited Mar 22 at 12:49
vs97
1,2581322
asked Mar 22 at 12:39
AJNAJN
11611
add a comment |
I am trying to execute a method(which takes a long time for execution) immediately after sending response from controller without having to keep the client wait for response.
My source code for sending the response is as follows,
@RequestMapping(value = "exportExcelReportService", method = RequestMethod.POST)
@ResponseStatus(value = HttpStatus.OK)
public void exportExcelReportServiceGetJsonObject(@ModelAttribute ReqParam reqParam, HttpServletResponse response)
java.io.PrintWriter wr;
try
wr = response.getWriter();
response.setStatus(HttpServletResponse.SC_OK);
wr.print(response);
wr.flush();
wr.close();
exportDataUsingVMService.getByteArrayForExcelSheet(reqParam);
catch (IOException e)
// TODO Auto-generated catch block
e.printStackTrace();
Over here getByteArrayForExcelSheet will get executed after the response has been sent to client. But I'm unable to create session in this method,
public void getByteArrayForExcelSheet(ReqParam reqParam)
JSONObject jObject = null;
HttpSession httpsession = request.getSession(false);
Where request is autowired like this,
@Autowired
private HttpServletRequest request;
I get exception in getByteArrayForExcelSheet like this,
java.lang.IllegalStateException: Cannot create a session after the response has been committed
java spring spring-mvc
edited Mar 22 at 12:49
vs97
1,2581322
asked Mar 22 at 12:39
AJNAJN
11611
2
Create the session before you send the response; the session requires a cookie; and the cookie must be sent as a header. Thus you must create the session first (but you can pass it to your method).
– Elliott Frisch
Mar 22 at 12:42
Thank you very much @ElliottFrisch, I attached the httpsession to reqParam before sending the response, like this, reqParam.setHttpsession(request.getSession()); then I used it in my getByteArrayForExcelSheet method.
– AJN
Mar 22 at 12:58
add a comment |
I am trying to execute a method(which takes a long time for execution) immediately after sending response from controller without having to keep the client wait for response.
My source code for sending the response is as follows,
@RequestMapping(value = "exportExcelReportService", method = RequestMethod.POST)
@ResponseStatus(value = HttpStatus.OK)
public void exportExcelReportServiceGetJsonObject(@ModelAttribute ReqParam reqParam, HttpServletResponse response)
java.io.PrintWriter wr;
try
wr = response.getWriter();
response.setStatus(HttpServletResponse.SC_OK);
wr.print(response);
wr.flush();
wr.close();
exportDataUsingVMService.getByteArrayForExcelSheet(reqParam);
catch (IOException e)
// TODO Auto-generated catch block
e.printStackTrace();
Over here getByteArrayForExcelSheet will get executed after the response has been sent to client. But I'm unable to create session in this method,
public void getByteArrayForExcelSheet(ReqParam reqParam)
JSONObject jObject = null;
HttpSession httpsession = request.getSession(false);
Where request is autowired like this,
@Autowired
private HttpServletRequest request;
I get exception in getByteArrayForExcelSheet like this,
java.lang.IllegalStateException: Cannot create a session after the response has been committed
java spring spring-mvc
edited Mar 22 at 12:49
vs97
1,2581322
asked Mar 22 at 12:39
AJNAJN
11611
I am trying to execute a method(which takes a long time for execution) immediately after sending response from controller without having to keep the client wait for response.
My source code for sending the response is as follows,
@RequestMapping(value = "exportExcelReportService", method = RequestMethod.POST)
@ResponseStatus(value = HttpStatus.OK)
public void exportExcelReportServiceGetJsonObject(@ModelAttribute ReqParam reqParam, HttpServletResponse response)
java.io.PrintWriter wr;
try
wr = response.getWriter();
response.setStatus(HttpServletResponse.SC_OK);
wr.print(response);
wr.flush();
wr.close();
exportDataUsingVMService.getByteArrayForExcelSheet(reqParam);
catch (IOException e)
// TODO Auto-generated catch block
e.printStackTrace();
Over here getByteArrayForExcelSheet will get executed after the response has been sent to client. But I'm unable to create session in this method,
public void getByteArrayForExcelSheet(ReqParam reqParam)
JSONObject jObject = null;
HttpSession httpsession = request.getSession(false);
Where request is autowired like this,
@Autowired
private HttpServletRequest request;
I get exception in getByteArrayForExcelSheet like this,
java.lang.IllegalStateException: Cannot create a session after the response has been committed
java spring spring-mvc
java spring spring-mvc
edited Mar 22 at 12:49
vs97
1,2581322
asked Mar 22 at 12:39
AJNAJN
11611
edited Mar 22 at 12:49
vs97
1,2581322
asked Mar 22 at 12:39
AJNAJN
11611
edited Mar 22 at 12:49
vs97
1,2581322
edited Mar 22 at 12:49
vs97
1,2581322
edited Mar 22 at 12:49
vs97
1,2581322
1,2581322
asked Mar 22 at 12:39
AJNAJN
11611
asked Mar 22 at 12:39
AJNAJN
11611
asked Mar 22 at 12:39
AJNAJN
11611
11611
2
Create the session before you send the response; the session requires a cookie; and the cookie must be sent as a header. Thus you must create the session first (but you can pass it to your method).
– Elliott Frisch
Mar 22 at 12:42
Thank you very much @ElliottFrisch, I attached the httpsession to reqParam before sending the response, like this, reqParam.setHttpsession(request.getSession()); then I used it in my getByteArrayForExcelSheet method.
– AJN
Mar 22 at 12:58
add a comment |
2
Create the session before you send the response; the session requires a cookie; and the cookie must be sent as a header. Thus you must create the session first (but you can pass it to your method).
– Elliott Frisch
Mar 22 at 12:42
Thank you very much @ElliottFrisch, I attached the httpsession to reqParam before sending the response, like this, reqParam.setHttpsession(request.getSession()); then I used it in my getByteArrayForExcelSheet method.
– AJN
Mar 22 at 12:58
2
2
Create the session before you send the response; the session requires a cookie; and the cookie must be sent as a header. Thus you must create the session first (but you can pass it to your method).
– Elliott Frisch
Mar 22 at 12:42
Create the session before you send the response; the session requires a cookie; and the cookie must be sent as a header. Thus you must create the session first (but you can pass it to your method).
– Elliott Frisch
Mar 22 at 12:42
Thank you very much @ElliottFrisch, I attached the httpsession to reqParam before sending the response, like this, reqParam.setHttpsession(request.getSession()); then I used it in my getByteArrayForExcelSheet method.
– AJN
Mar 22 at 12:58
Thank you very much @ElliottFrisch, I attached the httpsession to reqParam before sending the response, like this, reqParam.setHttpsession(request.getSession()); then I used it in my getByteArrayForExcelSheet method.
– AJN
Mar 22 at 12:58
add a comment |
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2
Create the session before you send the response; the session requires a cookie; and the cookie must be sent as a header. Thus you must create the session first (but you can pass it to your method).
– Elliott Frisch
Mar 22 at 12:42
Thank you very much @ElliottFrisch, I attached the httpsession to reqParam before sending the response, like this, reqParam.setHttpsession(request.getSession()); then I used it in my getByteArrayForExcelSheet method.
– AJN
Mar 22 at 12:58