Apache POI未在Excel中为每一列呈现输出
[英]Apache POI not rendering output in excel for every column
问题描述
I am using apache POI for reading data from database and rendering to excel. 
我正在使用apache POI从数据库读取数据并渲染为excel。 I used Oracle db. 我使用了Oracle数据库。 My Intended output in excel is desired output 我在excel中的预期输出是所需的输出
The actual output in excel is actual output Excel中的实际输出是实际输出
In this the employee names are Devendra Singh and Yuvraj Verma. 在此员工名称为Devendra Singh和Yuvraj Verma。 Below them are their respective token no is A1359 and A1539. 在它们下面是它们各自的标记，编号为A1359和A1539。 R,W,FH,OTR,OTW,OTFH are their production values for each employee. R，W，FH，OTR，OTW，OTFH是每个员工的生产值。
When using System.out.print the code is showing right positions but not in excel sheet. 使用System.out.print时，代码显示正确的位置，但不在Excel工作表中显示。 There is no exception also. 也没有例外。
//method to create cells
private static void createCell(XSSFWorkbook wb, XSSFRow row, short column, short halign, short valign,Object value) {
System.out.println("Creating row #"+row.getRowNum() + " Colm# "+column+" value "+value);
XSSFCell cell = row.createCell(column);
cell.setCellValue(value.toString());
CellStyle cellStyle = wb.createCellStyle();
if(column == 1) {
XSSFDataFormat df = wb.createDataFormat();
cellStyle.setDataFormat(df.getFormat("d mmm yy"));
}
cellStyle.setAlignment(halign);
cellStyle.setVerticalAlignment(valign);
cell.setCellStyle(cellStyle);
}
In the System.out.println() getting output as 在System.out.println（）中获取输出为
name DEVENDRA SINGH token:A1359 category:D depart:14 month:11 year:2015
Creating row #1 Colm# 2 value DEVENDRA SINGH
Creating row #2 Colm# 2 value A1359
Creating row #3 Colm# 2 value R
Creating row #3 Colm# 3 value W
Creating row #3 Colm# 4 value FH
Creating row #3 Colm# 5 value OT-R
Creating row #3 Colm# 6 value OT-W
Creating row #3 Colm# 7 value OT-FH
Creating row #4 Colm# 1 value 01/Nov/2015
Creating row #4 Colm# 2 value 12
Creating row #4 Colm# 3 value 3
Creating row #4 Colm# 4 value 4
Creating row #4 Colm# 5 value 5
Creating row #4 Colm# 6 value 6
Creating row #4 Colm# 7 value 7
Creating row #5 Colm# 1 value 02/Nov/2015
Creating row #5 Colm# 2 value 5
Creating row #5 Colm# 3 value 2
Creating row #5 Colm# 4 value 5
Creating row #5 Colm# 5 value 3
Creating row #5 Colm# 6 value 3
Creating row #5 Colm# 7 value 4
Creating row #6 Colm# 1 value 03/Nov/2015
Creating row #6 Colm# 2 value 0
Creating row #6 Colm# 3 value 0
Creating row #6 Colm# 4 value 0
Creating row #6 Colm# 5 value 0
Creating row #6 Colm# 6 value 0
Creating row #6 Colm# 7 value 0
Creating row #7 Colm# 1 value 04/Nov/2015
Creating row #7 Colm# 2 value 0
Creating row #7 Colm# 3 value 9
Creating row #7 Colm# 4 value 0
Creating row #7 Colm# 5 value 0
Creating row #7 Colm# 6 value 6
Creating row #7 Colm# 7 value 0
Creating row #8 Colm# 1 value 05/Nov/2015
Creating row #8 Colm# 2 value 3
Creating row #8 Colm# 3 value 0
Creating row #8 Colm# 4 value 0
Creating row #8 Colm# 5 value 0
Creating row #8 Colm# 6 value 6
Creating row #8 Colm# 7 value 0
Creating row #9 Colm# 1 value 06/Nov/2015
Creating row #9 Colm# 2 value 0
Creating row #9 Colm# 3 value 0
Creating row #9 Colm# 4 value 0
Creating row #9 Colm# 5 value 0
Creating row #9 Colm# 6 value 0
Creating row #9 Colm# 7 value 0
Creating row #10 Colm# 1 value 07/Nov/2015
Creating row #10 Colm# 2 value 0
Creating row #10 Colm# 3 value 0
Creating row #10 Colm# 4 value 0
Creating row #10 Colm# 5 value 0
Creating row #10 Colm# 6 value 0
Creating row #10 Colm# 7 value 0
Creating row #11 Colm# 1 value 08/Nov/2015
Creating row #11 Colm# 2 value 0
Creating row #11 Colm# 3 value 0
Creating row #11 Colm# 4 value 0
Creating row #11 Colm# 5 value 0
Creating row #11 Colm# 6 value 0
Creating row #11 Colm# 7 value 0
Creating row #12 Colm# 1 value 09/Nov/2015
Creating row #12 Colm# 2 value 0
Creating row #12 Colm# 3 value 0
Creating row #12 Colm# 4 value 0
Creating row #12 Colm# 5 value 0
Creating row #12 Colm# 6 value 0
Creating row #12 Colm# 7 value 0
Creating row #13 Colm# 1 value 10/Nov/2015
Creating row #13 Colm# 2 value 0
Creating row #13 Colm# 3 value 0
Creating row #13 Colm# 4 value 0
Creating row #13 Colm# 5 value 0
Creating row #13 Colm# 6 value 0
Creating row #13 Colm# 7 value 0
Creating row #14 Colm# 1 value 11/Nov/2015
Creating row #14 Colm# 2 value 0
Creating row #14 Colm# 3 value 0
Creating row #14 Colm# 4 value 0
Creating row #14 Colm# 5 value 0
Creating row #14 Colm# 6 value 0
Creating row #14 Colm# 7 value 0
Creating row #15 Colm# 1 value 12/Nov/2015
Creating row #15 Colm# 2 value 0
Creating row #15 Colm# 3 value 0
Creating row #15 Colm# 4 value 0
Creating row #15 Colm# 5 value 0
Creating row #15 Colm# 6 value 0
Creating row #15 Colm# 7 value 0
Creating row #16 Colm# 1 value 13/Nov/2015
Creating row #16 Colm# 2 value 0
Creating row #16 Colm# 3 value 0
Creating row #16 Colm# 4 value 0
Creating row #16 Colm# 5 value 0
Creating row #16 Colm# 6 value 0
Creating row #16 Colm# 7 value 0
Creating row #17 Colm# 1 value 14/Nov/2015
Creating row #17 Colm# 2 value 0
Creating row #17 Colm# 3 value 0
Creating row #17 Colm# 4 value 0
Creating row #17 Colm# 5 value 0
Creating row #17 Colm# 6 value 0
Creating row #17 Colm# 7 value 0
Creating row #18 Colm# 1 value 15/Nov/2015
Creating row #18 Colm# 2 value 0
Creating row #18 Colm# 3 value 0
Creating row #18 Colm# 4 value 0
Creating row #18 Colm# 5 value 0
Creating row #18 Colm# 6 value 0
Creating row #18 Colm# 7 value 0
Creating row #19 Colm# 1 value 16/Nov/2015
Creating row #19 Colm# 2 value 0
Creating row #19 Colm# 3 value 0
Creating row #19 Colm# 4 value 0
Creating row #19 Colm# 5 value 0
Creating row #19 Colm# 6 value 0
Creating row #19 Colm# 7 value 0
Creating row #20 Colm# 1 value 17/Nov/2015
Creating row #20 Colm# 2 value 0
Creating row #20 Colm# 3 value 0
Creating row #20 Colm# 4 value 0
Creating row #20 Colm# 5 value 0
Creating row #20 Colm# 6 value 0
Creating row #20 Colm# 7 value 0
Creating row #21 Colm# 1 value 18/Nov/2015
Creating row #21 Colm# 2 value 0
Creating row #21 Colm# 3 value 0
Creating row #21 Colm# 4 value 0
Creating row #21 Colm# 5 value 0
Creating row #21 Colm# 6 value 0
Creating row #21 Colm# 7 value 0
Creating row #22 Colm# 1 value 19/Nov/2015
Creating row #22 Colm# 2 value 0
Creating row #22 Colm# 3 value 0
Creating row #22 Colm# 4 value 0
Creating row #22 Colm# 5 value 0
Creating row #22 Colm# 6 value 0
Creating row #22 Colm# 7 value 0
Creating row #23 Colm# 1 value 20/Nov/2015
Creating row #23 Colm# 2 value 0
Creating row #23 Colm# 3 value 0
Creating row #23 Colm# 4 value 0
Creating row #23 Colm# 5 value 0
Creating row #23 Colm# 6 value 0
Creating row #23 Colm# 7 value 0
Creating row #24 Colm# 1 value 21/Nov/2015
Creating row #24 Colm# 2 value 0
Creating row #24 Colm# 3 value 0
Creating row #24 Colm# 4 value 0
Creating row #24 Colm# 5 value 0
Creating row #24 Colm# 6 value 0
Creating row #24 Colm# 7 value 0
Creating row #25 Colm# 1 value 22/Nov/2015
Creating row #25 Colm# 2 value 0
Creating row #25 Colm# 3 value 0
Creating row #25 Colm# 4 value 0
Creating row #25 Colm# 5 value 0
Creating row #25 Colm# 6 value 0
Creating row #25 Colm# 7 value 0
Creating row #26 Colm# 1 value 23/Nov/2015
Creating row #26 Colm# 2 value 0
Creating row #26 Colm# 3 value 0
Creating row #26 Colm# 4 value 0
Creating row #26 Colm# 5 value 0
Creating row #26 Colm# 6 value 0
Creating row #26 Colm# 7 value 0
Creating row #27 Colm# 1 value 24/Nov/2015
Creating row #27 Colm# 2 value 0
Creating row #27 Colm# 3 value 0
Creating row #27 Colm# 4 value 0
Creating row #27 Colm# 5 value 0
Creating row #27 Colm# 6 value 0
Creating row #27 Colm# 7 value 0
Creating row #28 Colm# 1 value 25/Nov/2015
Creating row #28 Colm# 2 value 0
Creating row #28 Colm# 3 value 0
Creating row #28 Colm# 4 value 0
Creating row #28 Colm# 5 value 0
Creating row #28 Colm# 6 value 0
Creating row #28 Colm# 7 value 0
Creating row #29 Colm# 1 value 26/Nov/2015
Creating row #29 Colm# 2 value 0
Creating row #29 Colm# 3 value 0
Creating row #29 Colm# 4 value 0
Creating row #29 Colm# 5 value 0
Creating row #29 Colm# 6 value 0
Creating row #29 Colm# 7 value 0
Creating row #30 Colm# 1 value 27/Nov/2015
Creating row #30 Colm# 2 value 0
Creating row #30 Colm# 3 value 0
Creating row #30 Colm# 4 value 0
Creating row #30 Colm# 5 value 0
Creating row #30 Colm# 6 value 0
Creating row #30 Colm# 7 value 0
Creating row #31 Colm# 1 value 28/Nov/2015
Creating row #31 Colm# 2 value 0
Creating row #31 Colm# 3 value 0
Creating row #31 Colm# 4 value 0
Creating row #31 Colm# 5 value 0
Creating row #31 Colm# 6 value 0
Creating row #31 Colm# 7 value 0
Creating row #32 Colm# 1 value 29/Nov/2015
Creating row #32 Colm# 2 value 0
Creating row #32 Colm# 3 value 0
Creating row #32 Colm# 4 value 0
Creating row #32 Colm# 5 value 0
Creating row #32 Colm# 6 value 0
Creating row #32 Colm# 7 value 0
Creating row #33 Colm# 1 value 30/Nov/2015
Creating row #33 Colm# 2 value 0
Creating row #33 Colm# 3 value 0
Creating row #33 Colm# 4 value 0
Creating row #33 Colm# 5 value 0
Creating row #33 Colm# 6 value 0
Creating row #33 Colm# 7 value 0
***end****
***start****
name YUVRAJ VERMA token:A1539 category:D depart:14 month:11 year:2015
Creating row #1 Colm# 8 value YUVRAJ VERMA
Creating row #2 Colm# 8 value A1539
Creating row #3 Colm# 8 value R
Creating row #3 Colm# 9 value W
Creating row #3 Colm# 10 value FH
Creating row #3 Colm# 11 value OT-R
Creating row #3 Colm# 12 value OT-W
Creating row #3 Colm# 13 value OT-FH
Creating row #4 Colm# 8 value 2
Creating row #4 Colm# 9 value 0
Creating row #4 Colm# 10 value 3
Creating row #4 Colm# 11 value 0
Creating row #4 Colm# 12 value 3
Creating row #4 Colm# 13 value 0
Creating row #5 Colm# 8 value 0
Creating row #5 Colm# 9 value 0
Creating row #5 Colm# 10 value 0
Creating row #5 Colm# 11 value 4
Creating row #5 Colm# 12 value 0
Creating row #5 Colm# 13 value 0
Creating row #6 Colm# 8 value 3
Creating row #6 Colm# 9 value 0
Creating row #6 Colm# 10 value 0
Creating row #6 Colm# 11 value 0
Creating row #6 Colm# 12 value 0
Creating row #6 Colm# 13 value 0
Creating row #7 Colm# 8 value 0
Creating row #7 Colm# 9 value 68
Creating row #7 Colm# 10 value 8
Creating row #7 Colm# 11 value 0
Creating row #7 Colm# 12 value 0
Creating row #7 Colm# 13 value 0
Creating row #8 Colm# 8 value 0
Creating row #8 Colm# 9 value 0
Creating row #8 Colm# 10 value 0
Creating row #8 Colm# 11 value 0
Creating row #8 Colm# 12 value 0
Creating row #8 Colm# 13 value 0
Creating row #9 Colm# 8 value 0
Creating row #9 Colm# 9 value 0
Creating row #9 Colm# 10 value 0
Creating row #9 Colm# 11 value 0
Creating row #9 Colm# 12 value 0
Creating row #9 Colm# 13 value 0
Creating row #10 Colm# 8 value 0
Creating row #10 Colm# 9 value 0
Creating row #10 Colm# 10 value 0
Creating row #10 Colm# 11 value 0
Creating row #10 Colm# 12 value 0
Creating row #10 Colm# 13 value 0
Creating row #11 Colm# 8 value 0
Creating row #11 Colm# 9 value 0
Creating row #11 Colm# 10 value 0
Creating row #11 Colm# 11 value 0
Creating row #11 Colm# 12 value 0
Creating row #11 Colm# 13 value 0
Creating row #12 Colm# 8 value 0
Creating row #12 Colm# 9 value 0
Creating row #12 Colm# 10 value 0
Creating row #12 Colm# 11 value 0
Creating row #12 Colm# 12 value 0
Creating row #12 Colm# 13 value 0
Creating row #13 Colm# 8 value 0
Creating row #13 Colm# 9 value 0
Creating row #13 Colm# 10 value 0
Creating row #13 Colm# 11 value 0
Creating row #13 Colm# 12 value 0
Creating row #13 Colm# 13 value 0
Creating row #14 Colm# 8 value 0
Creating row #14 Colm# 9 value 0
Creating row #14 Colm# 10 value 0
Creating row #14 Colm# 11 value 0
Creating row #14 Colm# 12 value 0
Creating row #14 Colm# 13 value 0
Creating row #15 Colm# 8 value 0
Creating row #15 Colm# 9 value 0
Creating row #15 Colm# 10 value 0
Creating row #15 Colm# 11 value 0
Creating row #15 Colm# 12 value 0
Creating row #15 Colm# 13 value 0
Creating row #16 Colm# 8 value 0
Creating row #16 Colm# 9 value 0
Creating row #16 Colm# 10 value 0
Creating row #16 Colm# 11 value 0
Creating row #16 Colm# 12 value 0
Creating row #16 Colm# 13 value 0
Creating row #17 Colm# 8 value 0
Creating row #17 Colm# 9 value 0
Creating row #17 Colm# 10 value 0
Creating row #17 Colm# 11 value 0
Creating row #17 Colm# 12 value 0
Creating row #17 Colm# 13 value 0
Creating row #18 Colm# 8 value 0
Creating row #18 Colm# 9 value 0
Creating row #18 Colm# 10 value 0
Creating row #18 Colm# 11 value 0
Creating row #18 Colm# 12 value 0
Creating row #18 Colm# 13 value 0
Creating row #19 Colm# 8 value 0
Creating row #19 Colm# 9 value 0
Creating row #19 Colm# 10 value 0
Creating row #19 Colm# 11 value 0
Creating row #19 Colm# 12 value 0
Creating row #19 Colm# 13 value 0
Creating row #20 Colm# 8 value 0
Creating row #20 Colm# 9 value 0
Creating row #20 Colm# 10 value 0
Creating row #20 Colm# 11 value 0
Creating row #20 Colm# 12 value 0
Creating row #20 Colm# 13 value 0
Creating row #21 Colm# 8 value 0
Creating row #21 Colm# 9 value 0
Creating row #21 Colm# 10 value 0
Creating row #21 Colm# 11 value 0
Creating row #21 Colm# 12 value 0
Creating row #21 Colm# 13 value 0
Creating row #22 Colm# 8 value 0
Creating row #22 Colm# 9 value 0
Creating row #22 Colm# 10 value 0
Creating row #22 Colm# 11 value 0
Creating row #22 Colm# 12 value 0
Creating row #22 Colm# 13 value 0
Creating row #23 Colm# 8 value 0
Creating row #23 Colm# 9 value 0
Creating row #23 Colm# 10 value 0
Creating row #23 Colm# 11 value 0
Creating row #23 Colm# 12 value 0
Creating row #23 Colm# 13 value 0
Creating row #24 Colm# 8 value 0
Creating row #24 Colm# 9 value 0
Creating row #24 Colm# 10 value 0
Creating row #24 Colm# 11 value 0
Creating row #24 Colm# 12 value 0
Creating row #24 Colm# 13 value 0
Creating row #25 Colm# 8 value 0
Creating row #25 Colm# 9 value 0
Creating row #25 Colm# 10 value 0
Creating row #25 Colm# 11 value 0
Creating row #25 Colm# 12 value 0
Creating row #25 Colm# 13 value 0
Creating row #26 Colm# 8 value 0
Creating row #26 Colm# 9 value 0
Creating row #26 Colm# 10 value 0
Creating row #26 Colm# 11 value 0
Creating row #26 Colm# 12 value 0
Creating row #26 Colm# 13 value 0
Creating row #27 Colm# 8 value 0
Creating row #27 Colm# 9 value 0
Creating row #27 Colm# 10 value 0
Creating row #27 Colm# 11 value 0
Creating row #27 Colm# 12 value 0
Creating row #27 Colm# 13 value 0
Creating row #28 Colm# 8 value 0
Creating row #28 Colm# 9 value 0
Creating row #28 Colm# 10 value 0
Creating row #28 Colm# 11 value 0
Creating row #28 Colm# 12 value 0
Creating row #28 Colm# 13 value 0
Creating row #29 Colm# 8 value 0
Creating row #29 Colm# 9 value 0
Creating row #29 Colm# 10 value 0
Creating row #29 Colm# 11 value 0
Creating row #29 Colm# 12 value 0
Creating row #29 Colm# 13 value 0
Creating row #30 Colm# 8 value 0
Creating row #30 Colm# 9 value 0
Creating row #30 Colm# 10 value 0
Creating row #30 Colm# 11 value 0
Creating row #30 Colm# 12 value 0
Creating row #30 Colm# 13 value 0
Creating row #31 Colm# 8 value 0
Creating row #31 Colm# 9 value 0
Creating row #31 Colm# 10 value 0
Creating row #31 Colm# 11 value 0
Creating row #31 Colm# 12 value 0
Creating row #31 Colm# 13 value 0
Creating row #32 Colm# 8 value 0
Creating row #32 Colm# 9 value 0
Creating row #32 Colm# 10 value 0
Creating row #32 Colm# 11 value 0
Creating row #32 Colm# 12 value 0
Creating row #32 Colm# 13 value 0
Creating row #33 Colm# 8 value 0
Creating row #33 Colm# 9 value 0
Creating row #33 Colm# 10 value 0
Creating row #33 Colm# 11 value 0
Creating row #33 Colm# 12 value 0
Creating row #33 Colm# 13 value 0
***end****
Code that calls the above code is below: 调用上述代码的代码如下：
try {
Class.forName("com.mysql.jdbc.Driver");
Connection connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/nmdckdl" ,
"root" , "" );
//connection = DBUtility.getConnection();
Statement statement = connection.createStatement();
workbook = new XSSFWorkbook();
FileOutputStream out = new FileOutputStream(new File("incentiveDetails.xlsx"));
XSSFSheet spreadsheet = workbook.createSheet("Individual Incentive");
XSSFRow row=spreadsheet.createRow(1);
/*Creating headers */
spreadsheet.addMergedRegion(new CellRangeAddress(
1, // mention first row here
3, //mention last row here, it is 1 as we are doing a column wise merging
1, //mention first column of merging
1 //mention last column to include in merge
));
createCell(workbook, row, (short) 1, CellStyle.ALIGN_CENTER_SELECTION, CellStyle.VERTICAL_CENTER,"Date");
int year,month;
String name,department,category,token;
year = 2015; month = 11;
String tempDt = year+"-"+month+"-01"; //yyyy-mm-dd
java.sql.Date date = valueOf(tempDt); //convert string date to java.sql.Date
ProductionDetailsDao production = new ProductionDetailsDao();
String oracleDate = production.javaSqlDateToString(date,"yyyy-MM-dd");
SimpleDateFormat oracleFormat = new SimpleDateFormat("yyyy-MM-dd");
String[] temp = oracleDate.split("-");
temp[2]= "__";
String temp2 = String.join("-", temp).toUpperCase();
ResultSet resultSet = statement.executeQuery("select name,token,cat,dep from indinc_t where dt like '"+ temp2 +"' group by token order by token asc");
List<ProductionDetailsBean> productionList = null;
int empCount =0,i=1;
while(resultSet.next()) {
row.setRowNum(1);
empCount++;
System.out.println("***start****");
name = resultSet.getString("Name");
token = resultSet.getString("Token");
category = resultSet.getString("Cat");
department = resultSet.getString("Dep");
System.out.println("name "+name+" token:"+token+" category:"+category + " depart:"+department+" month:"+month+ " year:"+year);
spreadsheet.addMergedRegion(new CellRangeAddress(1,1,i+1,i+6));
createCell(workbook, row, (short) (i+1), CellStyle.ALIGN_CENTER_SELECTION, CellStyle.ALIGN_GENERAL,name);
row=spreadsheet.createRow(2);
spreadsheet.addMergedRegion(new CellRangeAddress(2,2, i+1,i+6));
createCell(workbook, row, (short) (i+1), CellStyle.ALIGN_CENTER_SELECTION, CellStyle.ALIGN_GENERAL,token);
row=spreadsheet.createRow(3);
createCell(workbook, row, (short) (i+1), CellStyle.ALIGN_CENTER_SELECTION, CellStyle.ALIGN_CENTER,"R");
createCell(workbook, row, (short) (i+2), CellStyle.ALIGN_CENTER_SELECTION, CellStyle.ALIGN_CENTER,"W");
createCell(workbook, row, (short) (i+3), CellStyle.ALIGN_CENTER_SELECTION, CellStyle.ALIGN_CENTER,"FH");
createCell(workbook, row, (short) (i+4), CellStyle.ALIGN_CENTER_SELECTION, CellStyle.ALIGN_CENTER,"OT-R");
createCell(workbook, row, (short) (i+5), CellStyle.ALIGN_CENTER_SELECTION, CellStyle.ALIGN_CENTER,"OT-W");
createCell(workbook, row, (short) (i+6), CellStyle.ALIGN_CENTER_SELECTION, CellStyle.ALIGN_CENTER,"OT-FH");
ProductionDetailsDao prodDao = new ProductionDetailsDao();
ProductionDetailsBean prod;
productionList = new ArrayList();
PreparedStatement ps = null;
token = token.toUpperCase();
String data,query ;
int rom,waste,fh,otrom,otwaste,otfh;
try {
query = "SELECT * from indinc_t WHERE upper(token) = ? and dep = ? and cat = ? and dt like ? order by dt";
ps = connection.prepareStatement(query);
if(ps == null){
System.out.println("Error in setting preparerd statement...");
} else {
ps.setString(1, token.toUpperCase());
ps.setString(2, department.toUpperCase());
ps.setString(3, category.toUpperCase());
ps.setString(4, temp2);
ResultSet rs = ps.executeQuery();
int r= 3;
while (rs.next()) {
prod = new ProductionDetailsBean();
rom = rs.getInt("ROM");
waste = rs.getInt("WASTE");
fh = rs.getInt("FHR");
otrom = rs.getInt("ROM85");
otwaste = rs.getInt("WASTE85");
otfh = rs.getInt("FHR85");
date = rs.getDate("DT");// Date received in format yyyy-mm-dd java.sql.Date
System.out.println("date is "+date);
String strDt="";
if( date !=null ) {
SimpleDateFormat sdf = new SimpleDateFormat("dd/MMM/yyyy");
strDt = sdf.format(date);
}
r++;
row=spreadsheet.createRow(r);
if(empCount == 1) {
createCell(workbook, row, (short) empCount, CellStyle.ALIGN_CENTER, CellStyle.VERTICAL_CENTER,strDt);
}
createCell(workbook, row, (short) (i+1), CellStyle.ALIGN_CENTER, CellStyle.VERTICAL_CENTER,rom);
createCell(workbook, row, (short) (i+2), CellStyle.ALIGN_CENTER, CellStyle.VERTICAL_CENTER,waste);
createCell(workbook, row, (short) (i+3), CellStyle.ALIGN_CENTER, CellStyle.VERTICAL_CENTER,fh);
createCell(workbook, row, (short) (i+4), CellStyle.ALIGN_CENTER, CellStyle.VERTICAL_CENTER,otrom);
createCell(workbook, row, (short) (i+5), CellStyle.ALIGN_CENTER_SELECTION, CellStyle.VERTICAL_CENTER,otwaste);
createCell(workbook, row, (short) (i+6), CellStyle.ALIGN_CENTER_SELECTION, CellStyle.VERTICAL_CENTER,otfh);
}
}
} catch (Exception e) {
System.out.println(e.getMessage());
}
i=i+6;
System.out.println("***end****");
}
workbook.write(out);
out.close();
System.out.println("incentive details.xlsx written successfully");
}
catch (SQLException ex) {
System.out.println(ex.getMessage());
Logger.getLogger(DownloadExcel.class.getName()).log(Level.SEVERE, null, ex);
}
1 个解决方案
解决方案1
2 已采纳 2015-12-31 08:26:44
You should not call 你不应该打电话
row.setRowNum(1);
or 要么
spreadsheet.createRow
in a loop of this kind. 在这种循环中。 The first call just doesn't make sense, and the second call will overwrite the rows you have already created in the previous loop iteration. 第一次调用没有意义，第二次调用将覆盖您在上一个循环迭代中已经创建的行。 Instead, create the rows before the loop, and then retrieve them inside the loop using spreadsheet.getRow . 取而代之的是，在循环之前创建行，然后使用spreadsheet.getRow .getRow在循环内部检索它们。
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使用Apache POI将列添加到Excel - Adding column to Excel using Apache POI
apache poi excel大自动列宽 - apache poi excel big auto column width
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