java 读取 Excel 读取兼容2003,2007

java
读取 Excel
读取兼容2003,2007
需要jar包，至少要这几种

poi-3.7-20101029.jar

poi-ooxml-3.7-20101029.jar

poi-ooxml-schemas-3.7-20101029.jar

xmlbeans-2.3.0.jar

package com.yiwanj.core.util;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.text.DecimalFormat;

import java.text.SimpleDateFormat;

import java.util.LinkedList;

import java.util.List;

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.xssf.usermodel.XSSFCell;

import org.apache.poi.xssf.usermodel.XSSFRow;

import org.apache.poi.xssf.usermodel.XSSFSheet;

import org.apache.poi.xssf.usermodel.XSSFWorkbook;

public class ExcelUtil {

public static void main(String[] args) {

File file = new File("D:\\Tomcat 6\\webapps\\export\\upload\\Book1.xlsx");

try {

List list = readExcel(file);

for (int i = 0; i < list.size(); i++) {

List one = (List) list.get(i);

System.out.println(one.get(0));

System.out.println(one.get(1));

System.out.println(one.get(2));

System.out.println(one.get(3));

}

} catch (IOException e) {

e.printStackTrace();

}

}

/**

* 对外提供读取excel
的方法

* */

public static List<List<Object>> readExcel(File file) throws IOException{

String fileName = file.getName();

String extension = fileName.lastIndexOf(".")==-1?"":fileName.substring(fileName.lastIndexOf(".")+1);

if("xls".equals(extension)){

return read2003Excel(file);

}else if("xlsx".equals(extension)){

return read2007Excel(file);

}else{

throw new IOException("不支持的文件类型");

}

}

/**

* 读取 office 2003 excel

* @throws IOException

* @throws FileNotFoundException */

private static List<List<Object>> read2003Excel(File file) throws IOException{

List<List<Object>> list = new LinkedList<List<Object>>();

HSSFWorkbook hwb = new HSSFWorkbook(new FileInputStream(file));

HSSFSheet sheet = hwb.getSheetAt(0);

Object value = null;

HSSFRow row = null;

HSSFCell cell = null;

for(int i = sheet.getFirstRowNum();i<= sheet.getPhysicalNumberOfRows();i++){

row = sheet.getRow(i);

if (row == null) {

continue;

}

List<Object> linked = new LinkedList<Object>();

for (int j = row.getFirstCellNum(); j <= row.getLastCellNum(); j++) {

cell = row.getCell(j);

if (cell == null) {

continue;

}

DecimalFormat df = new DecimalFormat("0");// 格式化 number String
字符

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");//
格式化日期字符串

DecimalFormat nf = new DecimalFormat("0.00");// 格式化数字

switch (cell.getCellType()) {

case XSSFCell.CELL_TYPE_STRING:

System.out.println(i+"行"+j+"
列 is String type");

value = cell.getStringCellValue();

break;

case XSSFCell.CELL_TYPE_NUMERIC:

System.out.println(i+"行"+j+"
列 is Number type ; DateFormt:"+cell.getCellStyle().getDataFormatString());

if("@".equals(cell.getCellStyle().getDataFormatString())){

value = df.format(cell.getNumericCellValue());

} else if("General".equals(cell.getCellStyle().getDataFormatString())){

value = nf.format(cell.getNumericCellValue());

}else{

value = sdf.format(HSSFDateUtil.getJavaDate(cell.getNumericCellValue()));

}

break;

case XSSFCell.CELL_TYPE_BOOLEAN:

System.out.println(i+"行"+j+"
列 is Boolean type");

value = cell.getBooleanCellValue();

break;

case XSSFCell.CELL_TYPE_BLANK:

System.out.println(i+"行"+j+"
列 is Blank type");

value = "";

break;

default:

System.out.println(i+"行"+j+"
列 is default type");

value = cell.toString();

}

if (value == null || "".equals(value)) {

continue;

}

linked.add(value);

}

list.add(linked);

}

return list;

}

/**

* 读取Office 2007 excel

* */

private static List<List<Object>> read2007Excel(File file) throws IOException {

List<List<Object>> list = new LinkedList<List<Object>>();

// 构造 XSSFWorkbook
对象，strPath
传入文件路径

XSSFWorkbook xwb = new XSSFWorkbook(new FileInputStream(file));

// 读取第一章表格内容

XSSFSheet sheet = xwb.getSheetAt(0);

Object value = null;

XSSFRow row = null;

XSSFCell cell = null;

for (int i = sheet.getFirstRowNum(); i <= sheet

.getPhysicalNumberOfRows(); i++) {

row = sheet.getRow(i);

if (row == null) {

continue;

}

List<Object> linked = new LinkedList<Object>();

for (int j = row.getFirstCellNum(); j <= row.getLastCellNum(); j++) {

cell = row.getCell(j);

if (cell == null) {

continue;

}

DecimalFormat df = new DecimalFormat("0");// 格式化 number String
字符

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");//
格式化日期字符串

DecimalFormat nf = new DecimalFormat("0.00");// 格式化数字

switch (cell.getCellType()) {

case XSSFCell.CELL_TYPE_STRING:

System.out.println(i+"行"+j+"
列 is String type");

value = cell.getStringCellValue();

break;

case XSSFCell.CELL_TYPE_NUMERIC:

System.out.println(i+"行"+j+"
列 is Number type ; DateFormt:"+cell.getCellStyle().getDataFormatString());

if("@".equals(cell.getCellStyle().getDataFormatString())){

value = df.format(cell.getNumericCellValue());

} else if("General".equals(cell.getCellStyle().getDataFormatString())){

value = nf.format(cell.getNumericCellValue());

}else{

value = sdf.format(HSSFDateUtil.getJavaDate(cell.getNumericCellValue()));

}

break;

case XSSFCell.CELL_TYPE_BOOLEAN:

System.out.println(i+"行"+j+"
列 is Boolean type");

value = cell.getBooleanCellValue();

break;

case XSSFCell.CELL_TYPE_BLANK:

System.out.println(i+"行"+j+"
列 is Blank type");

value = "";

break;

default:

System.out.println(i+"行"+j+"
列 is default type");

value = cell.toString();

}

if (value == null || "".equals(value)) {

continue;

}

linked.add(value);

}

list.add(linked);

}

return list;

}

}