java - Display text value in a form or a textArea, textForm by GSP and Groovy code -
so have uploadform , after choosed file upload,and submit,and therefore want display content of file documents textarea or form,but don't know how parameter file , render text in file.
here code:file displayform.gsp
<%@ page contenttype="text/html;charset=utf-8" %> <html> <head> <meta http-equiv="content-type" content="text/html; charset=iso-8859-1"/> <meta name="layout" content="main"/> <title>upload</title> </head> <body> <div class="body"> </div> <g:uploadform action ="uploaded" > <input type = "file" name = "cfile" value = "file"/> <g:actionsubmit action="displayform" value = "submit" /> </g:uploadform> <p> <textfield rows="50" cols="100" value = "${cfile}" name="displayresult"/ > </p> <input type="button" value = "display" name = "display"> <br /> </body> </html> and file samplecontroller.groovy:
class samplecontroller{ def f def displayform() { if(params.cfile){ if(params.cfile instanceof org.springframework.web.multipart.commons.commonsmultipartfile){ //new fileoutputstream('d:/submitted_file.txt').leftshift( params.cfile.getinputstream() ); f=params.cfile.transferto(new file('d:/submitted_file.uima')); render file:params.cfile.tostring() ,contenttype: "text", encoding:"utf-8" }else{ log.error("wrong attachment type [${cfile.getclass()}]"); } } } as can see above,i wan't read file 'd:/submitted_file.uima' , render it.
if call render method,it got error file null.
i got problem @ call file parameter file .gsp.should call name "cfile" or "value" or "id" or uploadform , textarea(textfield).
the render file:x method accepts byte[], java.io.file or inputstream parameters while seem passing in commonsmultipartfile. try calling render file: f, ... in above code, instead, render file saved disk.
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