循环注意

int lineNum = 0;
            for (String key : titleMap.keySet()) {
//                row.createCell(lineNum).setCellValue(x.get(key));
                listvalue.add(key);
                System.out.println(lineNum);
                System.out.println(key);
                lineNum++;
            }
         

            for (int j=0;j<titleMap.size();j++) {
                listvalue1.add(headListCode.get(j));
                System.out.println(j);
                System.out.println(headListCode.get(j));
//                row.createCell(j).setCellValue(x.get(headListCode.get(j)));
            }