JAVA用POI读取和创建2003和2007版本Excel完美示例

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.text.DecimalFormat;

import java.text.SimpleDateFormat;

import java.util.Date;

import java.util.LinkedList;

import java.util.List;

import org.apache.poi.hssf.usermodel.HSSFCell;

import org.apache.poi.hssf.usermodel.HSSFCellStyle;

import org.apache.poi.hssf.usermodel.HSSFDataFormat;

import org.apache.poi.hssf.usermodel.HSSFDateUtil;

import org.apache.poi.hssf.usermodel.HSSFFont;

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.hssf.util.HSSFColor;

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

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

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

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

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

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

/**

* 可以从http://poi.apache.org/ 这里下载到POI的jar包 POI

创建和读取2003-2007版本Excel文件

public class CreatAndReadExcel {

public static void main(String[] args) throws Exception {

creat2003Excel();// 创建2007版Excel文件

creat2007Excel();// 创建2003版Excel文件

//读取2003Excel文件

String path2003 = System.getProperty("user.dir")

+ System.getProperty("file.separator") + "style_2003.xls";// 获取项目文件路径

+2003版文件名

System.out.println("路径：" + path2003);

File f2003 = new File(path2003);

try {

readExcel(f2003);

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

//读取2007Excel文件

String path2007 = System.getProperty("user.dir")

+ System.getProperty("file.separator") + "style_2007.xlsx";// 获取项目文件路径

+2007版文件名

System.out.println("路径：" + path2007);

File f2007 = new File(path2007);

try {

readExcel(f2007);

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

/**

* 创建2007版Excel文件

* @throws FileNotFoundException

* @throws IOException

private static void creat2007Excel() throws FileNotFoundException,

IOException {

// HSSFWorkbook workBook = new HSSFWorkbook();// 创建一个excel文档对象

XSSFWorkbook workBook = new XSSFWorkbook();

XSSFSheet sheet = workBook.createSheet();// 创建一个工作薄对象

sheet.setColumnWidth(1, 10000);// 设置第二列的宽度为

XSSFRow row = sheet.createRow(1);// 创建一个行对象

row.setHeightInPoints(23);// 设置行高23像素

XSSFCellStyle style = workBook.createCellStyle();// 创建样式对象

// 设置字体

XSSFFont font = workBook.createFont();// 创建字体对象

font.setFontHeightInPoints((short) 15);// 设置字体大小

font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);// 设置粗体

font.setFontName("黑体");// 设置为黑体字

style.setFont(font);// 将字体加入到样式对象

// 设置对齐方式

style.setAlignment(HSSFCellStyle.ALIGN_CENTER_SELECTION);// 水平居中

style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);// 垂直居中

// 设置边框

style.setBorderTop(HSSFCellStyle.BORDER_THICK);// 顶部边框粗线

style.setTopBorderColor(HSSFColor.RED.index);// 设置为红色

style.setBorderBottom(HSSFCellStyle.BORDER_DOUBLE);// 底部边框双线

style.setBorderLeft(HSSFCellStyle.BORDER_MEDIUM);// 左边边框

style.setBorderRight(HSSFCellStyle.BORDER_MEDIUM);// 右边边框

// 格式化日期

style.setDataFormat(HSSFDataFormat.getBuiltinFormat("m/d/yy h:mm"));

XSSFCell cell = row.createCell(1);// 创建单元格

cell.setCellValue(new Date());// 写入当前日期

cell.setCellStyle(style);// 应用样式对象

// 文件输出流

FileOutputStream os = new FileOutputStream("style_2007.xlsx");

workBook.write(os);// 将文档对象写入文件输出流

os.close();// 关闭文件输出流

System.out.println("创建成功 office 2007 excel");

}

/**

* 创建2003版本的Excel文件

private static void creat2003Excel() throws FileNotFoundException,

IOException {

HSSFWorkbook workBook = new HSSFWorkbook();// 创建一个excel文档对象

HSSFSheet sheet = workBook.createSheet();// 创建一个工作薄对象

sheet.setColumnWidth(1, 10000);// 设置第二列的宽度为

HSSFRow row = sheet.createRow(1);// 创建一个行对象

row.setHeightInPoints(23);// 设置行高23像素

HSSFCellStyle style = workBook.createCellStyle();// 创建样式对象

// 设置字体

HSSFFont font = workBook.createFont();// 创建字体对象

font.setFontHeightInPoints((short) 15);// 设置字体大小

font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);// 设置粗体

font.setFontName("黑体");// 设置为黑体字

style.setFont(font);// 将字体加入到样式对象

// 设置对齐方式

style.setAlignment(HSSFCellStyle.ALIGN_CENTER_SELECTION);// 水平居中

style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);// 垂直居中

// 设置边框

style.setBorderTop(HSSFCellStyle.BORDER_THICK);// 顶部边框粗线

style.setTopBorderColor(HSSFColor.RED.index);// 设置为红色

style.setBorderBottom(HSSFCellStyle.BORDER_DOUBLE);// 底部边框双线

style.setBorderLeft(HSSFCellStyle.BORDER_MEDIUM);// 左边边框

style.setBorderRight(HSSFCellStyle.BORDER_MEDIUM);// 右边边框

// 格式化日期

style.setDataFormat(HSSFDataFormat.getBuiltinFormat("m/d/yy h:mm"));

HSSFCell cell = row.createCell(1);// 创建单元格

cell.setCellValue(new Date());// 写入当前日期

cell.setCellStyle(style);// 应用样式对象

// 文件输出流

FileOutputStream os = new FileOutputStream("style_2003.xls");

workBook.write(os);// 将文档对象写入文件输出流

os.close();// 关闭文件输出流

System.out.println("创建成功 office 2003 excel");

}

/**

* 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;

System.out.println("读取office 2003 excel内容如下：");

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();

System.out.print(" " + value + " ");

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()));

}

System.out.print(" " + value + " ");

break;

case XSSFCell.CELL_TYPE_BOOLEAN:

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

value = cell.getBooleanCellValue();

System.out.print(" " + value + " ");

break;

case XSSFCell.CELL_TYPE_BLANK:

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

value = "";

System.out.print(" " + value + " ");

break;

default:

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

value = cell.toString();

System.out.print(" " + value + " ");

}

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

continue;

}

linked.add(value);

}

System.out.println("");

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>>();

// String path = System.getProperty("user.dir") +

// System.getProperty("file.separator")+"dd.xlsx";

// System.out.println("路径："+path);

// 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;

System.out.println("读取office 2007 excel内容如下：");

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();

System.out.print(" " + value + " ");

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()));

}

System.out.print(" " + value + " ");

break;

case XSSFCell.CELL_TYPE_BOOLEAN:

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

value = cell.getBooleanCellValue();

System.out.print(" " + value + " ");

break;

case XSSFCell.CELL_TYPE_BLANK:

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

value = "";

// System.out.println(value);

break;

default:

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

value = cell.toString();

System.out.print(" " + value + " ");

}

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

continue;

}

linked.add(value);

}

System.out.println("");

list.add(linked);

}

return list;

}

JAVA用POI读取和创建2003和2007版本Excel完美示例

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