java 如何使用 Apache POI 使用来自数组列表的数据填充 Excel 工作表
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How to populate an Excel sheet with the data from an arraylist using Apache POI
提问by user2550165
How to populate an Excel sheet with the data from an arraylist using Apache POI?
如何使用 Apache POI 使用来自数组列表的数据填充 Excel 工作表？
public String exporttoexcel(UserDetails user) throws Exception {
System.out.print("Inside serviceimpl.ExportToExcel method");
HSSFWorkbook wb = new HSSFWorkbook();
HSSFSheet sheet = wb.createSheet("new sheet");
HSSFRow row = sheet.createRow((short)0);
List<UserDetails> lstUserDetail = getUserDetailList();
for (int i=0; i<lstUserDetail.size(); i++) {
UserDetails lstUserDetail1 = lstUserDetail.get(i);
String a=lstUserDetail1.getStrUserName();
System.out.print("useridddd is"+a);
HSSFCell cell = row.createCell((short) 0);
cell.setCellValue(lstUserDetail1.getStrUserId());
cell.setCellValue(lstUserDetail1.getStrUserName());
cell.setCellValue(lstUserDetail1.getStrEMail());
cell.setCellValue(lstUserDetail1.getStrUserStatus());
cell.setCellValue(lstUserDetail1.getStrUserRole());
}
FileOutputStream fileOut = new FileOutputStream("workbook.xls");
wb.write(fileOut);
fileOut.close();
System.out.print("file created");
return null;
}
回答by Sankumarsingh
You have created one single cell and entering all the values in a same single cell each time.
您已经创建了一个单元格并每次都在同一个单元格中输入所有值。
You need to take two loops. One for iterating through row and another for iterating through column. Though I have not tested... use code like below.
您需要进行两个循环。一个用于遍历行，另一个用于遍历列。虽然我没有测试过......使用如下代码。
for(int RowNum=0; RowNum<MaxArrayLength;RowNum++){
HSSFRow row = sheet.createRow(RowNum);
for(int ColNum=0; ColNum<ArrayWidth;ColNum++){
HSSFCell cell = row.createCell(ColNum);
cell.setCellValue(ArrayList[RowNum][ColNum]);
}
}
回答by Nani
FileOutputStream fileOut = new FileOutputStream("your file path");
XSSFWorkbook workbook = new XSSFWorkbook();
XSSFSheet sheet = workbook.createSheet("sheet name");
try {
//creating the headers
Row row = sheet.createRow(0);
row.createCell(0).setCellValue("name");
row.createCell(1).setCellValue("Name1");
row.createCell(2).setCellValue("name2");
//get the list which u want
List<String> list = getNamesList();
int rowNum = 1;
for (Name name : list ) {
Row row1 = sheet.createRow(rowNum++);
row1.createCell(0).setCellValue((name.get..));
}
workbook.write(fileOut);
}
