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返回目录：excel表格制作
package edu.sjtu.erplab.poi;
import java.io.InputStream&ch=ww.xqy.chain" target="_blank" class="link-baike">FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFDateUtil;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
/**
* 操作Excel表格的功能类
*/
public class ExcelReader {
private POIFSFileSystem fs;
private HSSFWorkbook wb;
private HSSFSheet sheet;
private HSSFRow row;
/**
* 读取Excel表格表头的内容
* @e799bee5baa6e997aee7ad94e4b893e5b19e362param InputStream
* @return String 表头内容的数组
*/
public String[] readExcelTitle(InputStream is) {
try {
fs = new POIFSFileSystem(is);
wb = new HSSFWorkbook(fs);
} catch (IOException e) {
e.printStackTrace();
}
sheet = wb.getSheetAt(0);
row = sheet.getRow(0);
// 标题总列数
int colNum = row.getPhysicalNumberOfCells();
System.out.println("colNum:" + colNum);
String[] title = new String[colNum];
for (int i = 0; i < colNum; i++) {
//title[i] = getStringCellValue(row.getCell((short) i));
title[i] = getCellFormatValue(row.getCell((short) i));
}
return title;
}
/**
* 读取Excel数据内容
* @param InputStream
* @return Map 包含单元格数据内容的Map对象
*/
public Map<Integer, String> readExcelContent(InputStream is) {
Map<Integer, String> content = new HashMap<Integer, String>();
String str = "";
try {
fs = new POIFSFileSystem(is);
wb = new HSSFWorkbook(fs);
} catch (IOException e) {
e.printStackTrace();
}
sheet = wb.getSheetAt(0);
// 得到总行数
int rowNum = sheet.getLastRowNum();
row = sheet.getRow(0);
int colNum = row.getPhysicalNumberOfCells();
// 正文内容应该从第二行开始,第一行为表头的标题
for (int i = 1; i <= rowNum; i++) {
row = sheet.getRow(i);
int j = 0;
while (j < colNum) {
// 每个单元格的数据内容用"-"分割开，以后需要时用String类的replace()方法还原数据
// 也可以将每个单元格的数据设置到一个javabean的属性中，此时需要新建一个javabean
// str += getStringCellValue(row.getCell((short) j)).trim() +
// "-";
str += getCellFormatValue(row.getCell((short) j)).trim() + " ";
j++;
}
content.put(i, str);
str = "";
}
return content;
}
/**
* 获取单元格数据内容为字符串类型的数据
*
* @param cell Excel单元格
* @return String 单元格数据内容
*/
private String getStringCellValue(HSSFCell cell) {
String strCell = "";
switch (cell.getCellType()) {
case HSSFCell.CELL_TYPE_STRING:
strCell = cell.getStringCellValue();
break;
case HSSFCell.CELL_TYPE_NUMERIC:
strCell = String.valueOf(cell.getNumericCellValue());
break;
case HSSFCell.CELL_TYPE_BOOLEAN:
strCell = String.valueOf(cell.getBooleanCellValue());
break;
case HSSFCell.CELL_TYPE_BLANK:
strCell = "";
break;
default:
strCell = "";
break;
}
if (strCell.equals("") || strCell == null) {
return "";
}
if (cell == null) {
return "";
}
return strCell;
}
/**
* 获取单元格数据内容为日期类型的数据
*
* @param cell
* Excel单元格
* @return String 单元格数据内容
*/
private String getDateCellValue(HSSFCell cell) {
String result = "";
try {
int cellType = cell.getCellType();
if (cellType == HSSFCell.CELL_TYPE_NUMERIC) {
Date date = cell.getDateCellValue();
result = (date.getYear() + 1900) + "-" + (date.getMonth() + 1)
+ "-" + date.getDate();
} else if (cellType == HSSFCell.CELL_TYPE_STRING) {
String date = getStringCellValue(cell);
result = date.replaceAll("[年月]", "-").replace("日", "").trim();
} else if (cellType == HSSFCell.CELL_TYPE_BLANK) {
result = "";
}
} catch (Exception e) {
System.out.println("日期格式不正确!");
e.printStackTrace();
}
return result;
}
/**
* 根据HSSFCell类型设置数据
* @param cell
* @return
*/
private String getCellFormatValue(HSSFCell cell) {
String cellvalue = "";
if (cell != null) {
// 判断当前Cell的Type
switch (cell.getCellType()) {
// 如果当前Cell的Type为NUMERIC
case HSSFCell.CELL_TYPE_NUMERIC:
case HSSFCell.CELL_TYPE_FORMULA: {
// 判断当前的cell是否为Date
if (HSSFDateUtil.isCellDateFormatted(cell)) {
// 如果是Date类型则，转化为Data格式
//方法1：这样子的data格式是带时分秒的：2011-10-12 0:00:00
//cellvalue = cell.getDateCellValue().toLocaleString();
//方法2：这样子的data格式是不带带时分秒的：2011-10-12
Date date = cell.getDateCellValue();
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
cellvalue = sdf.format(date);
}
// 如果是纯数字
else {
// 取得当前Cell的数值
cellvalue = String.valueOf(cell.getNumericCellValue());
}
break;
}
// 如果当前Cell的Type为STRIN
case HSSFCell.CELL_TYPE_STRING:
// 取得当前的Cell字符串
cellvalue = cell.getRichStringCellValue().getString();
break;
// 默认的Cell值
default:
cellvalue = " ";
}
} else {
cellvalue = "";
}
return cellvalue;
}
public static void main(String[] args) {
try {
// 对读取Excel表格标题测试
InputStream is = new FileInputStream("d:\\test2.xls");
ExcelReader excelReader = new ExcelReader();
String[] title = excelReader.readExcelTitle(is);
System.out.println("获得Excel表格的标题:");
for (String s : title) {
System.out.print(s + " ");
}
// 对读取Excel表格内容测试
InputStream is2 = new FileInputStream("d:\\test2.xls");
Map<Integer, String> map = excelReader.readExcelContent(is2);
System.out.println("获得Excel表格的内容:");
for (int i = 1; i <= map.size(); i++) {
System.out.println(map.get(i));
}
} catch (FileNotFoundException e) {
System.out.println("未找到指定路径的文件!");
e.printStackTrace();
}
}
}
POIFSFileSystem fs=new POIFSFileSystem(new FileInputStream("d:\\test.xls"));
HSSFWorkbook wb = new HSSFWorkbook(fs);
HSSFSheet sheet = wb.getSheetAt(0);
HSSFRow row = sheet.getRow(0);
//f列索引位置
int index = 1;
HSSFCell cell = row.getCell((short) index);
String msg = cell.getStringCellValue();
读取excel中的数据，先加zhidao载好excel表，然后逐行逐列读取即可。
对于上面的行数专不一样，其实行数是一样的，只是下面两行的C列数据为空而已，代码中加上判断即可。
示例代码如下：
for(int rowIndex=0;rowIndex<sheet.getPhysicalNumberOfRows();rowIndex++)
{
Row row = sheet.getRow(rowIndex);
if(row == null) continue;
for(int cellIndex=0;cellIndex<row.getPhysicalNumberOfCells();cellIndex++)
{
Cell content = row.getCell(cellIndex);
if(content== null) continue; //判断空
//对于内容进行操作
....
}
}
有问题欢迎提问，满意请采纳，属谢谢！
XlsMain .java 类
//该类有main方法，主e69da5e887aae79fa5e98193366要负责运行程序，同时该类中也包含了用poi读取Excel(2003版)
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
/**
*
* @author Hongten</br>
*
* 参考地址：http://hao0610.iteye.com/blog/1160678
*
*/
public class XlsMain {
public static void main(String[] args) throws IOException {
XlsMain xlsMain = new XlsMain();
XlsDto xls = null;
List<XlsDto> list = xlsMain.readXls();
try {
XlsDto2Excel.xlsDto2Excel(list);
} catch (Exception e) {
e.printStackTrace();
}
for (int i = 0; i < list.size(); i++) {
xls = (XlsDto) list.get(i);
System.out.println(xls.getXh() + " " + xls.getXm() + " "
+ xls.getYxsmc() + " " + xls.getKcm() + " "
+ xls.getCj());
}
}
/**
* 读取xls文件内容
*
* @return List<XlsDto>对象
* @throws IOException
* 输入/输出(i/o)异常
*/
private List<XlsDto> readXls() throws IOException {
InputStream is = new FileInputStream("pldrxkxxmb.xls");
HSSFWorkbook hssfWorkbook = new HSSFWorkbook(is);
XlsDto xlsDto = null;
List<XlsDto> list = new ArrayList<XlsDto>();
// 循环工作表Sheet
for (int numSheet = 0; numSheet < hssfWorkbook.getNumberOfSheets(); numSheet++) {
HSSFSheet hssfSheet = hssfWorkbook.getSheetAt(numSheet);
if (hssfSheet == null) {
continue;
}
// 循环行Row
for (int rowNum = 1; rowNum <= hssfSheet.getLastRowNum(); rowNum++) {
HSSFRow hssfRow = hssfSheet.getRow(rowNum);
if (hssfRow == null) {
continue;
}
xlsDto = new XlsDto();
// 循环列Cell
// 0学号 1姓名 2学院 3课程名 4 成绩
// for (int cellNum = 0; cellNum <=4; cellNum++) {
HSSFCell xh = hssfRow.getCell(0);
if (xh == null) {
continue;
}
xlsDto.setXh(getValue(xh));
HSSFCell xm = hssfRow.getCell(1);
if (xm == null) {
continue;
}
xlsDto.setXm(getValue(xm));
HSSFCell yxsmc = hssfRow.getCell(2);
if (yxsmc == null) {
continue;
}
xlsDto.setYxsmc(getValue(yxsmc));
HSSFCell kcm = hssfRow.getCell(3);
if (kcm == null) {
continue;
}
xlsDto.setKcm(getValue(kcm));
HSSFCell cj = hssfRow.getCell(4);
if (cj == null) {
continue;
}
xlsDto.setCj(Float.parseFloat(getValue(cj)));
list.add(xlsDto);
}
}
return list;
}
/**
* 得到Excel表中的值
*
* @param hssfCell
* Excel中的每一个格子
* @return Excel中每一个格子中的值
*/
@SuppressWarnings("static-access")
private String getValue(HSSFCell hssfCell) {
if (hssfCell.getCellType() == hssfCell.CELL_TYPE_BOOLEAN) {
// 返回布尔类型的值
return String.valueOf(hssfCell.getBooleanCellValue());
} else if (hssfCell.getCellType() == hssfCell.CELL_TYPE_NUMERIC) {
// 返回数值类型的值
return String.valueOf(hssfCell.getNumericCellValue());
} else {
// 返回字符串类型的值
return String.valueOf(hssfCell.getStringCellValue());
}
}
}