excel - Spring MVC / AbstractExcelView / Apache POI : File Error -

-

i'm using apache poi , extending springs abstractexcelview create excel sheets.

public class excelspreadsheetview extends abstractexcelview {  protected void buildexceldocument(map<string, object> model,             hssfworkbook workbook, httpservletrequest request,             httpservletresponse response) throws exception {  //get positions loop through model @suppresswarnings("unchecked") list<position> positions = (list<position>) model.get("positions");  int lastrow = 0;  mysheet = wb.createsheet("sheet1");  myrow = mysheet.createrow(lastrow); mycell = myrow.createcell(0);  //loop through positions (int p = 0; p < positions.size(); p++) {      myrow = mysheet.createrow(lastrow);      mycell = myrow.createcell(0);      mycell.setcellvalue(new hssfrichtextstring(positions.get(p).getpositionname()));      lastrow++; }  //response stuff goes here, shouldnt need  }

i can create sheet when have following code after poi code:

response.setheader("content-disposition", "inline;filename=\"spreadsheet.xls\""); response.setcontenttype("application/octet-stream"); outputstream out = response.getoutputstream(); wb.write(out); out.flush(); out.close();

thing is, in none of examples online people include writing out outputstream or setting contenttype, seems abstractexcelview handles that.

when comment out 6 lines above, tries create file (i can see in console logs parsing data correctly), when go open file, excel fails open , displays following:

"file error: data may have been lost."

i know code works is, i'm trying right way , follow else doing online. don't think have code in outputstream or contenttype stuff, works if do.

any appreciated!

show me more code please.

you use hssfsheet ?

public class excelreportview extends abstractexcelview {     @override     protected void buildexceldocument(map<string, object> model, hssfworkbook workbook, httpservletrequest request,             httpservletresponse response) throws exception {          // create wordsheet         hssfsheet sheet = workbook.createsheet("title");          hssfrow header = sheet.createrow(0);         header.createcell(0).setcellvalue("whatever");         header.createcell(1).setcellvalue("whatever");          int rownum = 1;         (...) {             // create row data             hssfrow row = sheet.createrow(rownum++);             row.createcell(0).setcellvalue("whatever");             row.createcell(1).setcellvalue("whatever");         }     } }

Comments

Post a Comment

Popular posts from this blog

java - Jmockit String final length method mocking Issue -

-
using jmockit 1.2 jar, trying mock string's length method getting unexpected invocation exception: failed: test java.lang.illegalstateexception: missing invocation mocked type @ point; please make sure such invocations appear after declaration of suitable mock field or parameter @ stringdemo.testa$1.<init>(testa.java:17) @ stringdemo.testa.test(testa.java:13) i using testng: @test public void test() throws exception { new expectations() { @mocked("length") string astring; { astring.length(); result = 2; } }; system.out.println(a.showa("test")); } } actual class a: public class { public static int showa(string str){ int a= str.length(); return a; } } this wrong way of recording expected results. shouldn't mock , record string's length() method, record showa() instead. here solution @suppresswarnings("unused...
Read more

asp.net - Razor Page Hosted on IIS 6 Fails Every Morning -

-
i have simple page in intranet uses razor/asp fetch single record table , display it, plus few graphic, dashboard display. meaning, no user intervention other first time open ie internal url. the problem having every morning ie displays "page not found or network error" message. refresh page, , it's stuck , doesn't display anything. try different pc, open ie internal url , it's stuck... ...until following: login server hosting page run inetmgr go web sites, etc right click on page that's giving me problem , select browse at moment, error message: server error in '/' application. -------------------------------------------------------------------------------- type of page not served. description: type of page have requested not served because has been explicitly forbidden. extension '.cshtml' may incorrect. please review url below , make sure spelled correctly. requested url: /application/dashboard.cshtml ---------------...
Read more

ios - Can NSManagedObject conform to NSCoding -

-
i need transfer single object across device. right converting nsmanagedobject dictionary , archiving , sending nsdata. upon receiving unarchiving it. transfer nsmanagedobject archiving , unarchiving instead of creating intermediate data object. @interface test : nsmanagedobject<nscoding> @property (nonatomic, retain) nsstring * title; @end @implementation test @dynamic title; - (id)initwithcoder:(nscoder *)coder { self = [super init]; if (self) { self.title = [coder decodeobjectforkey:@"title"]; //<crash } return self; } - (void)encodewithcoder:(nscoder *)coder { [coder encodeobject:self.title forkey:@"title"]; } @end nsdata *archivedobjects = [nskeyedarchiver archiveddatawithrootobject:testobj]; nsdata *objectsdata = archivedobjects; if ([objectsdata length] > 0) { nsarray *objects = [nskeyedunarchiver unarchiveobjectwithdata:objectsdata]; } the problem above code is. crashes @ self.title in initwithcoder sa...
Read more