From bdf5540010d56e2103f80cc21366c835e8ff1a69 Mon Sep 17 00:00:00 2001 From: Glen Stampoultzis Date: Tue, 12 Feb 2002 04:51:07 +0000 Subject: [PATCH] Reformatted so it fits on a page. I'll git-svn-id: https://svn.apache.org/repos/asf/jakarta/poi/trunk@352093 13f79535-47bb-0310-9956-ffa450edef68 --- src/documentation/xdocs/hssf/how-to.xml | 322 +++++++++++++++--------- 1 file changed, 200 insertions(+), 122 deletions(-) diff --git a/src/documentation/xdocs/hssf/how-to.xml b/src/documentation/xdocs/hssf/how-to.xml index 0ff0a223c2..98b785406c 100644 --- a/src/documentation/xdocs/hssf/how-to.xml +++ b/src/documentation/xdocs/hssf/how-to.xml @@ -95,98 +95,135 @@ does not close it for you.

Here is some example code (excerpted and adapted from org.apache.poi.hssf.dev.HSSF test class):

- FileOutputStream out = new FileOutputStream("/home/me/myfile.xls"); // create a new file - HSSFWorkbook wb = new HSSFWorkbook(); // create a new workbook - HSSFSheet s = wb.createSheet(); // create a new sheet - HSSFRow r = null; // declare a row object reference - HSSFCell c = null; // declare a cell object reference - HSSFCellStyle cs = wb.createCellStyle(); // create 3 cell styles - HSSFCellStyle cs2 = wb.createCellStyle(); - HSSFCellStyle cs3 = wb.createCellStyle(); - HSSFFont f = wb.createFont(); // create 2 fonts objects - HSSFFont f2 = wb.createFont(); - - f.setFontHeightInPoints((short)12); //set font 1 to 12 point type - f.setColor((short)0xA); //make it red - f.setBoldweight(f.BOLDWEIGHT_BOLD); // make it bold - //arial is the default font - - f2.setFontHeightInPoints((short)10); //set font 2 to 10 point type - f2.setColor((short)0xf); //make it the color at palette index 0xf (white) - f2.setBoldweight(f2.BOLDWEIGHT_BOLD); //make it bold - - cs.setFont(f); //set cell stlye - cs.setDataFormat(HSSFDataFormat.getFormat("($#,##0_);[Red]($#,##0)"));//set the cell format see HSSFDataFromat for a full list - - cs2.setBorderBottom(cs2.BORDER_THIN); //set a thin border - cs2.setFillPattern((short)1); //fill w fg fill color - cs2.setFillForegroundColor((short)0xA); // set foreground fill to red + // create a new file + FileOutputStream out = new FileOutputStream("/home/me/myfile.xls"); + // create a new workbook + HSSFWorkbook wb = new HSSFWorkbook(); + // create a new sheet + HSSFSheet s = wb.createSheet(); + // declare a row object reference + HSSFRow r = null; + // declare a cell object reference + HSSFCell c = null; + // create 3 cell styles + HSSFCellStyle cs = wb.createCellStyle(); + HSSFCellStyle cs2 = wb.createCellStyle(); + HSSFCellStyle cs3 = wb.createCellStyle(); + // create 2 fonts objects + HSSFFont f = wb.createFont(); + HSSFFont f2 = wb.createFont(); - cs2.setFont(f2); // set the font + //set font 1 to 12 point type + f.setFontHeightInPoints((short)12); + //make it red + f.setColor((short)0xA); + // make it bold + //arial is the default font + f.setBoldweight(f.BOLDWEIGHT_BOLD); - wb.setSheetName(0,"HSSF Test"); // set the sheet name to HSSF Test - for (rownum = (short)0; rownum < 300; rownum++) // create a sheet with 300 rows (0-299) - { - r = s.createRow(rownum); // create a row - if ( (rownum % 2) == 0) { // on every other row - r.setHeight((short)0x249); // make the row height bigger (in twips - 1/20 of a point) + //set font 2 to 10 point type + f2.setFontHeightInPoints((short)10); + //make it the color at palette index 0xf (white) + f2.setColor((short)0xf); + //make it bold + f2.setBoldweight(f2.BOLDWEIGHT_BOLD); + + //set cell stlye + cs.setFont(f); + //set the cell format see HSSFDataFromat for a full list + cs.setDataFormat(HSSFDataFormat.getFormat("($#,##0_);[Red]($#,##0)")); + + //set a thin border + cs2.setBorderBottom(cs2.BORDER_THIN); + //fill w fg fill color + cs2.setFillPattern((short)1); + // set foreground fill to red + cs2.setFillForegroundColor((short)0xA); + + // set the font + cs2.setFont(f2); + + // set the sheet name to HSSF Test + wb.setSheetName(0,"HSSF Test"); + // create a sheet with 300 rows (0-299) + for (rownum = (short)0; rownum < 300; rownum++) + { + // create a row + r = s.createRow(rownum); + // on every other row + if ( (rownum % 2) == 0) { + // make the row height bigger (in twips - 1/20 of a point) + r.setHeight((short)0x249); } - + //r.setRowNum(( short ) rownum); - for (short cellnum = (short)0; cellnum < 50; cellnum += 2) // create 50 cells (0-49) (the += 2 becomes apparent later + // create 50 cells (0-49) (the += 2 becomes apparent later + for (short cellnum = (short)0; cellnum < 50; cellnum += 2) { - c = r.createCell(cellnum,HSSFCell.CELL_TYPE_NUMERIC); // create a numeric cell - c.setCellValue(rownum * 10000 + cellnum // do some goofy math to demonstrate decimals + // create a numeric cell + c = r.createCell(cellnum,HSSFCell.CELL_TYPE_NUMERIC); + // do some goofy math to demonstrate decimals + c.setCellValue(rownum * 10000 + cellnum + ((( double ) rownum / 1000) + (( double ) cellnum / 10000))); - - if ( (rownum % 2) == 0) { // on every other row - c.setCellStyle(cs); // set this cell to the first cell style we defined + + // on every other row + if ( (rownum % 2) == 0) { + // set this cell to the first cell style we defined + c.setCellStyle(cs); } + // create a string cell (see why += 2 in the + c = r.createCell((short)(cellnum+1),HSSFCell.CELL_TYPE_STRING); - c = r.createCell((short)(cellnum+1),HSSFCell.CELL_TYPE_STRING); // create a string cell (see why += 2 in the - // for loop (we want 2 cells per loop) - c.setCellValue("TEST"); // set the cell's string value to "TEST" - s.setColumnWidth((short)(cellnum+1), (short)((50*8) / ((double)1/20)) ); // make this column a bit wider - - if ( (rownum % 2) == 0) { // on every other row - c.setCellStyle(cs2); // set this to the white on red cell style - } // we defined above - - } + // set the cell's string value to "TEST" + c.setCellValue("TEST"); + // make this column a bit wider + s.setColumnWidth((short)(cellnum+1), (short)((50*8) / ((double)1/20)) ); + + // on every other row + if ( (rownum % 2) == 0) { + // set this to the white on red cell style + // we defined above + c.setCellStyle(cs2); + } + + } } - - + //draw a thick black border on the row at the bottom using BLANKS - rownum++; // advance 2 rows + // advance 2 rows rownum++; - + rownum++; + r = s.createRow(rownum); - - - - cs3.setBorderBottom(cs3.BORDER_THICK); // define the third style to be the default - // except with a thick black border at the bottom - - for (short cellnum = (short)0; cellnum < 50; cellnum++) { //create 50 cells - c = r.createCell(cellnum,HSSFCell.CELL_TYPE_BLANK); //create a blank type cell (no value) - c.setCellStyle(cs3); // set it to the thick black border style + + // define the third style to be the default + // except with a thick black border at the bottom + cs3.setBorderBottom(cs3.BORDER_THICK); + + //create 50 cells + for (short cellnum = (short)0; cellnum < 50; cellnum++) { + //create a blank type cell (no value) + c = r.createCell(cellnum,HSSFCell.CELL_TYPE_BLANK); + // set it to the thick black border style + c.setCellStyle(cs3); } - + //end draw thick black border - - - //demonstrate adding/naming and deleting a sheet - // create a sheet, set its title then delete it - s = wb.createSheet(); + + + // demonstrate adding/naming and deleting a sheet + // create a sheet, set its title then delete it + s = wb.createSheet(); wb.setSheetName(1,"DeletedSheet"); wb.removeSheetAt(1); //end deleted sheet - - - wb.write(out); // write the workbook to the output stream - out.close(); // close our file (don't blow out our file handles + + // write the workbook to the output stream + // close our file (don't blow out our file handles + wb.write(out); + out.close(); @@ -205,8 +242,7 @@ method (sheet.removeRow(hssfrow)) and create objects just as you would if creating a new xls. When you are done modifying cells just call workbook.write(outputstream) just as you did above.

An example of this can be seen in -org.apache.poi.hssf.dev.HSSF. See -http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/*checkout*/poi/poi/production/src/net/sourceforge/poi/hssf/dev/HSSF.java?rev=HEAD&content-type=text/plain.

+org.apache.poi.hssf.dev.HSSF.

 @@ -246,77 +282,117 @@ registered to listen for until the file has been completely read.

A code excerpt from org.apache.poi.hssf.dev.EFHSSF (which is in CVS or the source distribution) is reprinted below with excessive comments:

-class EFHSSFListener implements HSSFListener { //this non-public class implements the required interface - EFHSSF efhssf; // we construct it with a copy of its container class...this is cheap but effective - public EFHSSFListener(EFHSSF efhssf) { + +//this non-public class implements the required interface +// we construct it with a copy of its container class...this is cheap but effective +class EFHSSFListener implements HSSFListener { + EFHSSF efhssf; + public EFHSSFListener(EFHSSF efhssf) { this.efhssf = efhssf; } - - public void processRecord(Record record) { // we just use this as an adapter so we pass the record to the method in the container class + + // we just use this as an adapter so we pass the record to the method in the container class + public void processRecord(Record record) { efhssf.recordHandler(record); } } //here is an excerpt of the main line execution code from EFHSSF public void run() throws IOException { - FileInputStream fin = new FileInputStream(infile); // create a new file input stream with the input file specified - // at the command line - Filesystem poifs = new Filesystem(fin); // create a new org.apache.poi.poifs.filesystem.Filesystem - InputStream din = poifs.createDocumentInputStream("Workbook"); // get the Workbook (excel part) stream in a InputStream - HSSFRequest req = new HSSFRequest(); // construct out HSSFRequest object - req.addListenerForAllRecords(new EFHSSFListener(this)); // lazy listen for ALL records with the listener shown above - HSSFEventFactory factory = new HSSFEventFactory(); // create our event factory - factory.processEvents(req,din); // process our events based on the document input stream - fin.close(); // once all the events are processed close our file input stream - din.close(); // and our document input stream (don't want to leak these!) - FileOutputStream fout = new FileOutputStream(outfile); // create a new output stream from filename specified at the command line - workbook.write(fout); // write the HSSFWorkbook (class member) we created out to the file. - fout.close(); // close our file output stream - System.out.println("done."); // print done. Go enjoy your copy of the file. + // create a new file input stream with the input file specified + // at the command line + FileInputStream fin = new FileInputStream(infile); + // create a new org.apache.poi.poifs.filesystem.Filesystem + Filesystem poifs = new Filesystem(fin); + // get the Workbook (excel part) stream in a InputStream + InputStream din = poifs.createDocumentInputStream("Workbook"); + // construct out HSSFRequest object + HSSFRequest req = new HSSFRequest(); + // lazy listen for ALL records with the listener shown above + req.addListenerForAllRecords(new EFHSSFListener(this)); + // create our event factory + HSSFEventFactory factory = new HSSFEventFactory(); + // process our events based on the document input stream + factory.processEvents(req,din); + // once all the events are processed close our file input stream + fin.close(); + // and our document input stream (don't want to leak these!) + din.close(); + // create a new output stream from filename specified at the command line + FileOutputStream fout = new FileOutputStream(outfile); + // write the HSSFWorkbook (class member) we created out to the file. + workbook.write(fout); + // close our file output stream + fout.close(); + // print done. Go enjoy your copy of the file. + System.out.println("done."); } //here is an excerpt of the recordHander called from our listener. - public void recordHandler(Record record) { // the record handler in the container class is intent on just rewriting the fire - HSSFRow row = null; + // the record handler in the container class is intent on just rewriting the file + public void recordHandler(Record record) { + HSSFRow row = null; HSSFCell cell = null; int sheetnum = -1; switch (record.getSid()) { - case BOFRecord.sid: // the BOFRecord can represent either the beginning of a sheet or the workbook + // the BOFRecord can represent either the beginning of a sheet or the workbook + case BOFRecord.sid: BOFRecord bof = (BOFRecord) record; if (bof.getType() == bof.TYPE_WORKBOOK) { - workbook = new HSSFWorkbook(); //if its the workbook then create a new HSSFWorkbook - } else if (bof.getType() == bof.TYPE_WORKSHEET) { // assigned to the class level member + //if its the workbook then create a new HSSFWorkbook + workbook = new HSSFWorkbook(); + // assigned to the class level member + } else if (bof.getType() == bof.TYPE_WORKSHEET) { sheetnum++; - cursheet = workbook.getSheetAt(sheetnum); // otherwise if its a sheet increment the sheetnum index - } // get the sheet at that index and assign it to method variable - break; // cursheet (the sheet was created when the BoundSheetRecord record occurred - case BoundSheetRecord.sid: - BoundSheetRecord bsr = (BoundSheetRecord) record; // when we find a boundsheet record create a new sheet in the workbook and - workbook.createSheet(bsr.getSheetname()); // assign it the name specified in this record. + // otherwise if its a sheet increment the sheetnum index + cursheet = workbook.getSheetAt(sheetnum); + } break; - case RowRecord.sid: // if this is a row record add the row to the current sheet + // get the sheet at that index and assign it to method variable + // cursheet (the sheet was created when the BoundSheetRecord record occurred + case BoundSheetRecord.sid: + // when we find a boundsheet record create a new sheet in the workbook and + BoundSheetRecord bsr = (BoundSheetRecord) record; + // assign it the name specified in this record. + workbook.createSheet(bsr.getSheetname()); + break; + // if this is a row record add the row to the current sheet + case RowRecord.sid: RowRecord rowrec = (RowRecord) record; - cursheet.createRow(rowrec.getRowNumber()); // assign our row the rownumber specified in the Row Record + // assign our row the rownumber specified in the Row Record + cursheet.createRow(rowrec.getRowNumber()); break; - case NumberRecord.sid: // if this is a NumberRecord (RKRecord, MulRKRecord get converted to Number - NumberRecord numrec = (NumberRecord) record; // records) then get the row specified in the number record from the current - row = cursheet.getRow(numrec.getRow()); // sheet. With this instance of HSSFRow create a new HSSFCell with the column - cell = row.createCell(numrec.getColumn(),HSSFCell.CELL_TYPE_NUMERIC); //number specified in the record and assign it type NUMERIC - cell.setCellValue(numrec.getValue()); // set the HSSFCell's value to the value stored in the NumberRecord + // if this is a NumberRecord (RKRecord, MulRKRecord get converted to Number + // records) then get the row specified in the number record from the current + // sheet. With this instance of HSSFRow create a new HSSFCell with the column + // number specified in the record and assign it type NUMERIC + case NumberRecord.sid: + NumberRecord numrec = (NumberRecord) record; + row = cursheet.getRow(numrec.getRow()); + cell = row.createCell(numrec.getColumn(),HSSFCell.CELL_TYPE_NUMERIC); + // set the HSSFCell's value to the value stored in the NumberRecord + cell.setCellValue(numrec.getValue()); break; - case SSTRecord.sid: // if this is the SSTRecord (occurs once in the workbook) then add all of its - SSTRecord sstrec = (SSTRecord) record; // strings to our workbook. We'll look them up later when we add LABELSST records. + // if this is the SSTRecord (occurs once in the workbook) then add all of its + // strings to our workbook. We'll look them up later when we add LABELSST records. + case SSTRecord.sid: + SSTRecord sstrec = (SSTRecord) record; for (int k = 0; k < sstrec.getNumUniqueStrings(); k++) { workbook.addSSTString(sstrec.getString(k)); } break; - case LabelSSTRecord.sid: // if this is a LabelSSTRecord then get the row specified in the LabelSSTRecord from - LabelSSTRecord lrec = (LabelSSTRecord) record; // the current sheet. With this instance of HSSFRow create a new HSSFCell with the - row = cursheet.getRow(lrec.getRow()); // column nubmer specified in the record and set the type to type STRING. + // if this is a LabelSSTRecord then get the row specified in the LabelSSTRecord from + // the current sheet. With this instance of HSSFRow create a new HSSFCell with the + // column nubmer specified in the record and set the type to type STRING. + case LabelSSTRecord.sid: + LabelSSTRecord lrec = (LabelSSTRecord) record; + row = cursheet.getRow(lrec.getRow()); cell = row.createCell(lrec.getColumn(),HSSFCell.CELL_TYPE_STRING); - cell.setCellValue(workbook.getSSTString(lrec.getSSTIndex())); //set the cells value to the string in our workbook object (added in the case - break; //above) at the index specified by the LabelSSTRecord. + //set the cells value to the string in our workbook object (added in the case + //above) at the index specified by the LabelSSTRecord. + cell.setCellValue(workbook.getSSTString(lrec.getSSTIndex())); + break; } } @@ -356,7 +432,9 @@ export CLASSPATH=$CLASSPATH:$HSSFDIR/hssf.jar:$HSSFDIR/poi-poifs.jar:$HSSFDIR/po @@ -375,7 +453,7 @@ you get no logging. If the log configuration dictates the logging be turned off, you get no logging.

Here is an example hssflog.properties (actually its not an example its mine): -# Set root category priority to DEBUG and its only appender to A1. +# Set root category priority to DEBUG and its only appender to A1. log4j.rootCategory=DEBUG, A1 # A1 is set to be a ConsoleAppender. @@ -386,7 +464,7 @@ log4j.appender.A1.layout=org.apache.log4j.PatternLayout log4j.appender.A1.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n #uncomment below to change the level to WARN to disable debugging information. This effectively turns off logging. #the default level is DEBUG (and changing it to DEBUG is the basically the same thing as leaving it commented out). -#log4j.category.org.apache.poi=WARN

+#log4j.category.org.apache.poi=WARN