在apache poi中的每个10个项目之后插入新行

Question

我有一个List<String>，它具有很少的元素，我想使用Apache POI将这些元素写入Excel工作表。此外，我想在每10个项目后将数据放入单独的行中。例如，我的列表中的以下内容：

["aaa","bbb","ccc","ddd","eee","fff","ggg","hhh","iii","jjj","kkk","lll","mmm","nnn","ooo","ppp","qqq","rrr","sss","ttt",....] 

我想这在Excel工作表中以下格式

 col1, col2, col3, col4, col5, col6, col7, col8, col9, col10 
row1 : aaa, bbb, ccc, ddd, eee, fff, ggg, hhh, iii, jjj 
row2 : kkk, lll, mmm, nnn, ooo, ppp, qqq, rrr, sss, ttt 

这可以通过Apache POI实现？

我曾尝试以下（我真的坏循环）

public void csvUpdateWorksheet1(String fileName, String sheetName, List<String> data) { 

    HSSFWorkbook workbook = new HSSFWorkbook(); 
    HSSFSheet sheet = workbook.createSheet(sheetName); 

    logger.info(data.size()); 
    int rownum = 0; 
    for (int i = 0; i < data.size(); i++) { 
     Row row = sheet.createRow(i); 
     Cell cell = row.createCell(i); 
     cell.setCellValue(data.get(i));  
    }   
    csvWriteToFile(workbook, fileName);    
} 

Answer 1

您需要创建的下一行，一旦你的当前行中创建10个细胞。

int r = 0; 
int c = 0; 
int maxCellsPerRow = 10; 
Row row = sheet.createRow(r); 
for (String str : data) 
{ 
    Cell cell = row.createCell(c); 
    cell.setCellValue(str); 

    c++; 
    // Create and advance to next row if needed. 
    if (c >= maxCellsPerRow) 
    { 
     c = 0; 
     r++; 
     row = sheet.createRow(r); 
    } 
} 

Answer 2

int rownum = 0; 
int colnum = 0; 
int itemsPerRow = 20; 
String outfilename = "test.xls"; 
List<String> values = new ArrayList<String>(); 
// add some values ... 

HSSFWorkbook book = new HSSFWorkbook(); 

HSSFSheet sheet = book.createSheet(

HSSFRow row = sheet.getRow(rownuw); 

for(String s : values) { 

    HSSFCell cell = row.createCell(colnum); 
    cell.setCellValue(Integer.parseInt(id)); 
    colnum = (column+1)%itemsPerRow; 
    if(colnum == 0) { 
     rownum++; 
     row = sheet.getRow(rownuw); 
    } 
} 

File f = new File("src/main/resources/films.xls"); 
FileOutputStream fos = new FileOutputStream(f); 

book.write(fos); 
fos.flush(); 
fos.close();