用二维数组解决问题：
int dictsize = dictInfo.size();
int listsize = ((JavaList) dictInfo.get(dictInfo.getKeys().get(0))).size();
//数据处理
String[][] parameter = new String[dictsize][listsize];
for (int i = 0; i < dictsize; i++) {
JavaList list = (JavaList) dictInfo.getKeys();
JavaList listInfo = (JavaList) dictInfo.get(list.get(i)); //获取列数据
for (int j = 0; j < listsize; j++) {
parameter[i][j] = listInfo.get(j).toString();
}
}
//写第二行……
for (int i = 0; i < listsize; i++) {
HSSFRow dataRow = sheet.createRow(i + 1);
dataRow.setHeight((short) (15 * 20));
for (int j = 0; j < dictsize; j++) {
Cell dataCell = dataRow.createCell(j);
HSSFFont dataFont = wb.createFont();
dataFont.setFontName("华文细黑");
dataFont.setFontHeightInPoints((short) 10);
dataFont.setBoldweight(HSSFFont.BOLDWEIGHT_NORMAL);
HSSFCellStyle dataStyle = wb.createCellStyle();
dataStyle.setAlignment(HSSFCellStyle.ALIGN_LEFT);
dataStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
dataStyle.setFont(dataFont);
dataCell.setCellStyle(dataStyle);
dataCell.setCellValue(parameter[j][i]);
}
}