1.导入Jar包：poi-3.8-20120326.jar、poi-ooxml-3.8-20120326.jar、poi-ooxml-schemas-3.8-20120326.jar、xbean.jar、dom4j-1.6.1.jar
类开始================
package servlet;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.math.BigDecimal;
import java.text.NumberFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.DateUtil;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
public class ReadExcleTest {
public static void main(String[] args) {
String path = "E:/yy.xls";
//String path = "E:/yy.xlsx";
Map<String, List<String[]>> map = getExcle(path);
List<String[]> list = map.get("Sheet1");
for (int i = 0; i < list.size(); i++) {
String[] str = list.get(i);
for (int j = 0; j < str.length; j++) {
System.out.print(str[j] + " | ");
}
System.out.println("");
}
}
/**
*获得excle的数据
*
* @param pathname
* @return
*/
public static Map<String, List<String[]>> getExcle(String pathname) {
InputStream fs = null;
Workbook wb = null;
Map<String, List<String[]>> map = new HashMap<String, List<String[]>>();
try {
// excle的类型
String readType = pathname.substring(pathname.lastIndexOf("."));
File file = new File(pathname);
if (file.exists()) {
fs = new FileInputStream(file);
} else {
System.out.println("文件不存在！");
}
if (readType.equals(".xls")) {
wb = new HSSFWorkbook(fs);
} else {
wb = new XSSFWorkbook(fs);
}
map = getExcleData_xls(wb);
} catch (Exception e) {
e.printStackTrace();
}
return map;
}
/**
* 获得excle xls格式的数据
*
* @param wb
* @return
*/
public static Map<String, List<String[]>> getExcleData_xls(Workbook wb) {
Map<String, List<String[]>> map = new HashMap<String, List<String[]>>();
try {
if (wb != null) {
// sheet个数
int numSheet = wb.getNumberOfSheets();
for (int i = 0; i < numSheet; i++) {
Sheet sheet = wb.getSheetAt(i);
String sheetname = sheet.getSheetName();
List<String[]> listData = getSheetData(sheet); // 读取sheet里的数据
listData = setMergedRegion(sheet, listData);
map.put(sheetname, listData);
}
}
} catch (Exception e) {
e.printStackTrace();
}
return map;
}
/**
* 获得sheet 里的数据
*
* @param sheet
* @return
*/
public static List<String[]> getSheetData(Sheet sheet) {
List<String[]> listData = new ArrayList<String[]>();
try {
if (sheet != null) {
for (int i = 0; i <= sheet.getLastRowNum(); i++) {
Row row = sheet.getRow(i);
String[] rowData = getRowData(row);
listData.add(rowData);
}
}
} catch (Exception e) {
e.printStackTrace();
}
return listData;
}
/**
* 获得row 的数据
*
* @param row
* @return
*/
public static String[] getRowData(Row row) {
String[] rowData = null;
try {
if (row != null) {
int numcell = row.getLastCellNum();
rowData = new String[numcell];
for (int i = 0; i < numcell; i++) {
Cell cell = row.getCell(i);
rowData[i] = getCellData(cell);
}
}
} catch (Exception e) {
e.printStackTrace();
}
return rowData;
}
/**
* 获得单元格的值
* @param cell
* @return
*/
public static String getCellData(Cell cell) {
String value = null;
try {
if (cell != null) {
switch (cell.getCellType()) {
case Cell.CELL_TYPE_NUMERIC: // 数值型
if (DateUtil.isCellDateFormatted(cell)) {
// 如果是Date类型则 ，获取该Cell的Date值
value =new SimpleDateFormat("yyyy-MM-dd").format(DateUtil
.getJavaDate(cell.getNumericCellValue()));
} else {// 纯数字，这里要判断是否为小数的情况，因为整数在写入时会被加上小数点
String t = cell.getNumericCellValue() + "";
BigDecimal n = new BigDecimal(cell
.getNumericCellValue());
// 判断是否有小数点
if (t.indexOf(".") < 0) {
value = n.intValue() + "";
} else {
// 数字格式化对象
NumberFormat nf = NumberFormat.getInstance();
// 小数点最大两位
nf.setMaximumFractionDigits(2);
// 执行格式化
value = nf.format(n.doubleValue());
}
}
break;
case Cell.CELL_TYPE_STRING: // 字符串型
value = cell.getRichStringCellValue().toString();
break;
case Cell.CELL_TYPE_FORMULA:// 公式型
// 读公式计算值
value = String.valueOf(cell.getNumericCellValue());
break;
case Cell.CELL_TYPE_BOOLEAN:// 布尔
value = " " + cell.getBooleanCellValue();
break;
/* 此行表示该单元格值为空 */
case Cell.CELL_TYPE_BLANK: // 空值
value = " ";
break;
case Cell.CELL_TYPE_ERROR: // 故障
value = " ";
break;
default:
value = cell.getRichStringCellValue().toString();
}
}
} catch (Exception e) {
e.printStackTrace();
}
return value;
}
/**
* 处理单元格值相等的单元格
*
* @param sheet
*/
@SuppressWarnings("unused")
public static List<String[]> setMergedRegion(Sheet sheet,
List<String[]> list) {
int num = sheet.getNumMergedRegions();
List<String[]> listDate = new ArrayList<String[]>();
try {
for (int i = 0; i < num; i++) {
CellRangeAddress rangeAddress = sheet.getMergedRegion(i);
int firstcell = rangeAddress.getFirstColumn();
int firstrow = rangeAddress.getFirstRow();
int lastcell = rangeAddress.getLastColumn();
int lastrow = rangeAddress.getLastRow();
// 处理合并行的值
if (firstcell == lastcell) {
for (int j = firstrow; j <= lastrow; j++) {
list.get(j)[firstcell] = list.get(firstrow)[firstcell];
}
}
// 处理合并列的值
if (firstrow == lastrow) {
for (int j = firstcell; j <= lastcell; j++) {
list.get(firstrow)[j] = list.get(firstrow)[j];
}
}
// 处理合并行列
if (firstcell != lastcell && firstrow != lastrow) {
for (int j = firstrow; j <= lastrow; j++) {
for (int k = firstcell; k <= lastcell; k++) {
list.get(j)[k] = list.get(firstrow)[firstcell];
}
}
}
}
listDate = list;
} catch (Exception e) {
e.printStackTrace();
}
return list;
}
}
类结束================