如何在java中使用poi从excel的第一行读取到最后一行?
我使用ApachePOI读取表单excel文件,代码也可以正常工作,但代码从中间读取数据,而不是从文件的第一行读取 代码是:如何在java中使用poi从excel的第一行读取到最后一行?,java,excel,apache-poi,Java,Excel,Apache Poi,我使用ApachePOI读取表单excel文件,代码也可以正常工作,但代码从中间读取数据,而不是从文件的第一行读取 代码是: package org.sample; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.hssf.usermodel.HSSFSheet; import org.apache.poi.hssf.usermodel.HSSFRow; import org.apache.poi.
package org.sample;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFCell;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;
import java.util.ArrayList;
public class Main {
@SuppressWarnings("unchecked")
public static void main(String[] args) throws Exception {
//
// An excel file name. You can create a file name with a full
// path information.
//
String fileName = "D:/workspace/ReadExlsx/xlsx/SampleData.xls";
// Create an ArrayList to store the data read from excel sheet.
//
List sheetData = new ArrayList();
FileInputStream fis = null;
try {
//
// Create a FileInputStream that will be use to read the
// excel file.
//
fis = new FileInputStream(fileName);
//
// Create an excel workbook from the file system.
//
HSSFWorkbook workbook = new HSSFWorkbook(fis);
//
// Get the first sheet on the workbook.
//
HSSFSheet sheet = workbook.getSheetAt(0);
//
// When we have a sheet object in hand we can iterator on
// each sheet's rows and on each row's cells. We store the
// data read on an ArrayList so that we can printed the
// content of the excel to the console.
//
Iterator rows = sheet.rowIterator();
while (rows.hasNext()) {
HSSFRow row = (HSSFRow) rows.next();
Iterator cells = row.cellIterator();
List data = new ArrayList();
while (cells.hasNext()) {
HSSFCell cell = (HSSFCell) cells.next();
data.add(cell);
}
sheetData.add(data);
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (fis != null) {
fis.close();
}
}
showExelData(sheetData);
}
private static void showExelData(List sheetData) {
//
// Iterates the data and print it out to the console.
//
for (int i = 0; i < sheetData.size(); i++) {
List list = (List) sheetData.get(i);
//for (int j = 0; j < list.size(); j++) {
HSSFCell employeeid = (HSSFCell) list.get(0);
HSSFCell department = (HSSFCell) list.get(3);
HSSFCell date = (HSSFCell) list.get(5);
System.out.print(employeeid.getRichStringCellValue().getString()+" , ");
System.out.print(department.getRichStringCellValue().getString()+" , ");
System.out.print(date.getRichStringCellValue().getString());
//if (j < list.size() - 1) {
// System.out.print(", ");
//}
// }
System.out.println("");
}
}
}
package org.sample;
导入org.apache.poi.hssf.usermodel.HSSFWorkbook;
导入org.apache.poi.hssf.usermodel.HSSFSheet;
导入org.apache.poi.hssf.usermodel.HSSFRow;
导入org.apache.poi.hssf.usermodel.HSSFCell;
导入java.io.FileInputStream;
导入java.io.IOException;
导入java.util.Iterator;
导入java.util.List;
导入java.util.ArrayList;
公共班机{
@抑制警告(“未选中”)
公共静态void main(字符串[]args)引发异常{
//
//excel文件名。您可以创建具有完整名称的文件名
//路径信息。
//
String fileName=“D:/workspace/ReadExlsx/xlsx/SampleData.xls”;
//创建ArrayList以存储从excel工作表读取的数据。
//
List sheetData=new ArrayList();
FileInputStream fis=null;
试一试{
//
//创建一个FileInputStream,用于读取
//excel文件。
//
fis=新文件输入流(文件名);
//
//从文件系统创建excel工作簿。
//
HSSF工作手册=新的HSSF工作手册(fis);
//
//获取工作簿上的第一张工作表。
//
HSSFSheet sheet=工作簿。getSheetAt(0);
//
//当我们手头有一个sheet对象时,我们可以对其进行迭代
//每个工作表的行和每行的单元格上。我们存储
//在ArrayList上读取数据,以便打印
//将excel的内容发送到控制台。
//
迭代器行=sheet.rowIterator();
while(rows.hasNext()){
HSSFRow行=(HSSFRow)行。下一步();
迭代器单元格=行。单元格迭代器();
列表数据=新的ArrayList();
while(cells.hasNext()){
HSSFCell单元格=(HSSFCell)单元格。下一步();
添加数据(单元格);
}
sheetData.add(数据);
}
}捕获(IOE异常){
e、 printStackTrace();
}最后{
如果(fis!=null){
fis.close();
}
}
showExelData(sheetData);
}
私有静态void showExelData(列表数据){
//
//迭代数据并将其打印到控制台。
//
对于(int i=0;i
请帮助解决此问题。如果您有数据int I行和J列,您应该尝试以下代码:
for (int i = 0; i < sheetData.size(); i++) {
List list = (List) sheetData.get(i);
for (int j = 0; j < list.size(); j++) {
HSSFCell employeeid = (HSSFCell) list.get(j);
System.out.print(employeeid.getRichStringCellValue().getString());
if (j < list.size() - 1) {
System.out.print(", ");
}
}
System.out.println("");
}
for(int i=0;i
对我来说,它工作得很好。我的poi版本是poi-3.8-20120306。//获取XLS文件的工作簿实例
XSSFWorkbook workbook = new XSSFWorkbook(file);
//从工作簿中获取第一张工作表
XSSFSheet sheet = workbook.getSheetAt(0);
ArrayList<String> columndata = null;
Iterator<Row> rowIterator = sheet.iterator();
columndata = new ArrayList<>();
while (rowIterator.hasNext()) {
Row row = rowIterator.next();
Iterator<Cell> cellIterator = row.cellIterator();
while (cellIterator.hasNext()) {
Cell cell = cellIterator.next();
if (row.getRowNum() > 0) { // To filter column headings
if (cell.getColumnIndex() == 0) {// To match column
// index
switch (cell.getCellType()) {
case Cell.CELL_TYPE_NUMERIC:
columndata.add(cell.getNumericCellValue() + "");
break;
case Cell.CELL_TYPE_STRING:
columndata.add(cell.getStringCellValue());
break;
}
}
}
}
}
XSSFSheet sheet=workbook.getSheetAt(0);
ArrayList columndata=null;
迭代器rowIterator=sheet.Iterator();
columndata=新的ArrayList();
while(roweiterator.hasNext()){
行=行迭代器。下一步();
迭代器cellIterator=row.cellIterator();
while(cellIterator.hasNext()){
Cell=cellIterator.next();
如果(row.getRowNum()>0){//要筛选列标题
如果(cell.getColumnIndex()==0){//匹配列
//索引
开关(cell.getCellType()){
case Cell.Cell\u类型\u数值:
columndata.add(cell.getNumericCellValue()+);
打破
case Cell.Cell\u类型\u字符串:
add(cell.getStringCellValue());
打破
}
}
}
}
}