测试POI的Excel导出导入

xmlbeans-2.6.0.jar
poi-3.11-20141221.jar
poi-ooxml-3.11-20141221.jar
poi-ooxml-schemas-3.11-20141221.jar

@Test
public void testCreatePOI03Excel() throws Exception {
// 1.创建工作簿
HSSFWorkbook workbook = new HSSFWorkbook();
// 2.创建工作表
HSSFSheet sheet = workbook.createSheet("hello world");
// 3.创建行：创建第三行
HSSFRow row = sheet.createRow(2);
// 4.创建单元格：创建第三行第三列
HSSFCell cell = row.createCell(2);
cell.setCellValue("hello world");

// 输出到硬盘
FileOutputStream outputStream = new FileOutputStream("D:\\buaa\\测试.xls");
workbook.write(outputStream);
workbook.close();
outputStream.close();
}

@Test
public void testReadPOI03Excel() throws Exception {
FileInputStream inputStream = new FileInputStream("D:\\buaa\\测试.xls");
// 1.读取工作簿
HSSFWorkbook workbook = new HSSFWorkbook(inputStream);
// 2.读取工作表
HSSFSheet sheet = workbook.getSheetAt(0);
// 3.读取行：读取第三行
HSSFRow row = sheet.getRow(2);
// 4.读取单元格：读取第三行第三列
HSSFCell cell = row.getCell(2);
System.out.println("第三行第三列的内容是：" + cell.getStringCellValue());

workbook.close();
inputStream.close();
}

@Test
public void testCreatePOI07Excel() throws Exception {
// 1.创建工作簿
XSSFWorkbook workbook = new XSSFWorkbook();
// 2.创建工作表
XSSFSheet sheet = workbook.createSheet("hello world");
// 3.创建行：创建第三行
XSSFRow row = sheet.createRow(2);
// 4.创建单元格：创建第三行第三列
XSSFCell cell = row.createCell(2);
cell.setCellValue("hello world");

// 输出到硬盘
FileOutputStream outputStream = new FileOutputStream("D:\\buaa\\测试.xlsx");
workbook.write(outputStream);
workbook.close();
outputStream.close();
}

@Test
public void testReadPOI07Excel() throws Exception {
FileInputStream inputStream = new FileInputStream("D:\\buaa\\测试.xlsx");
// 1.读取工作簿
XSSFWorkbook workbook = new XSSFWorkbook(inputStream);
// 2.读取工作表
XSSFSheet sheet = workbook.getSheetAt(0);
// 3.读取行：读取第三行
XSSFRow row = sheet.getRow(2);
// 4.读取单元格：读取第三行第三列
XSSFCell cell = row.getCell(2);
System.out.println("第三行第三列的内容是：" + cell.getStringCellValue());

workbook.close();
inputStream.close();
}

@Test
public void testReadPOI03And07Excel() throws Exception {
String fileName = "D:\\buaa\\测试.xls";
if (fileName.matches("^.+\\.(?i)((xls)|(xlsx))$")) {// 判断是否Excel文档
boolean is03Excel = fileName.matches("^.+\\.(?i)(xls)$");
FileInputStream inputStream = new FileInputStream(fileName);
// 1.读取工作簿
Workbook workbook = is03Excel ? new HSSFWorkbook(inputStream) : new XSSFWorkbook(inputStream);
// 2.读取工作表
Sheet sheet = workbook.getSheetAt(0);
// 3.读取行：读取第三行
Row row = sheet.getRow(2);
// 4.读取单元格：读取第三行第三列
Cell cell = row.getCell(2);
System.out.println("第三行第三列的内容是：" + cell.getStringCellValue());
workbook.close();
inputStream.close();
}
}

@Test
public void testExcelStyle() throws Exception {
// 1.创建工作簿
XSSFWorkbook workbook = new XSSFWorkbook();
// 1.1创建合并单元格，合并第三行的第三列到第五列
CellRangeAddress cellRangeAddress = new CellRangeAddress(2, 2, 2, 4);
//1.2创建单元格样式
XSSFCellStyle style = workbook.createCellStyle();
style.setAlignment(XSSFCellStyle.ALIGN_CENTER); //水平居中
style.setVerticalAlignment(XSSFCellStyle.VERTICAL_CENTER); //垂直居中
//1.3创建字体
XSSFFont font = workbook.createFont();
font.setBoldweight(XSSFFont.BOLDWEIGHT_BOLD); //加粗字体
font.setFontHeightInPoints((short) 16);
//加载字体
style.setFont(font);
//1.4单元格背景 (此例为07版，03版稍微有些不同)
//设置背景填充模式
style.setFillPattern(XSSFCellStyle.SOLID_FOREGROUND);
//设置填充背景色
style.setFillBackgroundColor(IndexedColors.YELLOW.getIndex());
//设置填充前景色
style.setFillForegroundColor(IndexedColors.RED.getIndex());
// 2.创建工作表
XSSFSheet sheet = workbook.createSheet("Hello World");
// 2.1加载合并单元格对像
sheet.addMergedRegion(cellRangeAddress);
// 3.创建行：创建第三行
XSSFRow row = sheet.createRow(2);
// 4.创建单元格：创建第三行第三列
XSSFCell cell = row.createCell(2);
// 加载样式
cell.setCellStyle(style);
cell.setCellValue("Hello World");

// 输出到硬盘
FileOutputStream outputStream = new FileOutputStream("D:\\buaa\\测试.xlsx");
workbook.write(outputStream);
workbook.close();
outputStream.close();