OO-1050

src/main/java/org/olat/core/gui/components/table/DefaultXlsTableExporter.java

@@ -36,6 +36,7 @@ import org.apache.poi.ss.usermodel.Font;
 import org.apache.poi.ss.usermodel.Row;
 import org.apache.poi.ss.usermodel.Sheet;
 import org.apache.poi.ss.usermodel.Workbook;
+import org.apache.poi.ss.util.WorkbookUtil;
 import org.olat.core.gui.media.CleanupAfterDeliveryFileMediaResource;
 import org.olat.core.gui.media.MediaResource;
 import org.olat.core.gui.render.StringOutput;
@@ -71,7 +72,8 @@ public class DefaultXlsTableExporter implements TableExporter {
 		headerCellStyle = getHeaderCellStyle(wb);
 		
 		String tableExportTitle = translator.translate("table.export.title");
-		Sheet exportSheet = wb.createSheet(tableExportTitle);
+		String saveTitle = WorkbookUtil.createSafeSheetName(tableExportTitle);
+		Sheet exportSheet = wb.createSheet(saveTitle);
 		createHeader(table, translator, cdcnt, exportSheet);
 		createData(table, cdcnt, rcnt, exportSheet);
 		

src/main/java/org/olat/course/db/CustomDBController.java

@@ -32,6 +32,7 @@ import org.apache.poi.ss.usermodel.Font;
 import org.apache.poi.ss.usermodel.Row;
 import org.apache.poi.ss.usermodel.Sheet;
 import org.apache.poi.ss.usermodel.Workbook;
+import org.apache.poi.ss.util.WorkbookUtil;
 import org.olat.core.CoreSpringFactory;
 import org.olat.core.gui.UserRequest;
 import org.olat.core.gui.components.form.flexible.FormItem;
@@ -264,7 +265,8 @@ public class CustomDBController extends FormBasicController {
 
 		Workbook wb = new HSSFWorkbook();
 		CellStyle headerCellStyle = getHeaderCellStyle(wb);
-		Sheet exportSheet = wb.createSheet(courseTitle);
+		String saveTitle = WorkbookUtil.createSafeSheetName(courseTitle);
+		Sheet exportSheet = wb.createSheet(saveTitle);
 		
 		//create the headers
 		Row headerRow = exportSheet.createRow(0);

src/main/java/org/olat/instantMessaging/manager/ChatLogHelper.java

@@ -38,6 +38,7 @@ import org.apache.poi.ss.usermodel.Font;
 import org.apache.poi.ss.usermodel.Row;
 import org.apache.poi.ss.usermodel.Sheet;
 import org.apache.poi.ss.usermodel.Workbook;
+import org.apache.poi.ss.util.WorkbookUtil;
 import org.olat.basesecurity.IdentityImpl;
 import org.olat.core.gui.media.MediaResource;
 import org.olat.core.gui.media.WorkbookMediaResource;
@@ -115,7 +116,8 @@ public class ChatLogHelper {
 
 		Workbook wb = new HSSFWorkbook();
 		String tableExportTitle = translator.translate("logChat.export.title");
-		Sheet exportSheet = wb.createSheet(tableExportTitle);
+		String saveTitle = WorkbookUtil.createSafeSheetName(tableExportTitle);
+		Sheet exportSheet = wb.createSheet(saveTitle);
 		Formatter formatter = Formatter.getInstance(locale);
 		
 		//headers