java - Sending text file to client through Spring MVC web application -

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after doing research online on subject managed things working code:

@requestmapping(value = "/report040generated", method = requestmethod.get)     public string index(model model, httpservletresponse response, httpservletrequest request) throws ioexception {          string mystring = "hello";         response.setcontenttype("text/plain");         response.setheader("content-disposition","attachment;filename=myfile.txt");         servletoutputstream out = response.getoutputstream();         out.println(mystring);         out.flush();         out.close();          return "index";     }

my proble when click on jsp button, files gets downloaded method doesn't redirect "index" .jsp view , gives me illegalstateexcepton:

severe: servlet.service() servlet jsp threw exception java.lang.illegalstateexception: getoutputstream() has been called response

any suggestions might causing issue ?

it not possible redirect page when returning file file http response. explanation here: spring - download file , redirect


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