直接上代码：
poi版本大于3.8
public class ExcelUtil {
//声明一个模板工作薄(写入流式数据)
private Workbook writeDataWorkBook;
//样式列表
private Map<String, CellStyle> cellStyleMap;
//Excel当前数据行数(将要写入数据的索引数)
private int currentRowNum = 0;
//数据输出流
private OutputStream outputStream;
/**
* 释放资源
*/
public void dispose() {
try {
if (writeDataWorkBook != null) {
writeDataWorkBook.write(outputStream);
}
if (outputStream != null) {
outputStream.flush();
outputStream.close();
}
if (cellStyleMap != null) {
cellStyleMap.clear();
}
cellStyleMap = null;
outputStream = null;
writeDataWorkBook = null;
} catch (IOException e) {
}
}
/**
* 导出字符串数据
*
* @param file 文件名
* @param columnNames 表头
* @param sheetTitle sheet页Title
*/
public void exportExcelTitle(HttpServletResponse response, String sheetName, List<String> columnNames,
String sheetTitle, List<List<Object>> objects) {
//创建xlsx格式的Excel
XSSFWorkbook wb = new XSSFWorkbook();
/**
* SXSSFWorkbook被写入的表格，可进行海量写入
* 参数：
* @wb2007版本Excel
* @100批量写入条数
*/
SXSSFWorkbook tplWorkBook = new SXSSFWorkbook(wb, 100);
Map<String, CellStyle> cellStyleMap = styleMap(tplWorkBook);
// 表头样式
CellStyle headStyle = cellStyleMap.get("head");
// 生成一个表格
Sheet sheet = tplWorkBook.getSheet(sheetName);
if (sheet == null) {
sheet = tplWorkBook.createSheet(sheetName);
}
// 合并单元格
sheet.addMergedRegion(new CellRangeAddress(currentRowNum, currentRowNum, 0, columnNames.size() - 1));
// 产生表格标题行
Row rowMerged = sheet.createRow(currentRowNum);
Cell mergedCell = rowMerged.createCell(0);
mergedCell.setCellStyle(headStyle);
mergedCell.setCellValue(new XSSFRichTextString(sheetTitle));
//写入成功一行数据递增行数
currentRowNum = currentRowNum + 1;
// 产生表格表头列标题行
Row row = sheet.createRow(currentRowNum);
for (int i = 0; i < columnNames.size(); i++) {
Cell cell = row.createCell(i);
cell.setCellStyle(headStyle);
RichTextString text = new XSSFRichTextString(columnNames.get(i));
cell.setCellValue(text);
}
//写入成功一行数据递增行数
currentRowNum = currentRowNum + 1;
//内容样式
CellStyle contentStyle = cellStyleMap.get("content");
//正文整数样式
CellStyle contentIntegerStyle = cellStyleMap.get("integer");
//正文带小数整数样式
CellStyle contentDoubleStyle = cellStyleMap.get("double");
for (List<Object> dataRow : objects) {
Row row1 = sheet.createRow(currentRowNum);
for (int j = 0; j < dataRow.size(); j++) {
Cell contentCell = row1.createCell(j);
Object dataObject = dataRow.get(j);
contentCell.setCellStyle(contentStyle);
String str = dataObject.toString();
if(str.contains("-") && str.contains(":") && str.contains(".0")){
str.trim();
str = str.substring(0, str.lastIndexOf(" "));
contentCell.setCellStyle(contentStyle);
contentCell.setCellValue(str);
}else if(this.isNum(str)){
if(str.contains(".")){
contentCell.setCellStyle(contentDoubleStyle);
contentCell.setCellValue(Double.parseDouble(str));
}else{
contentCell.setCellStyle(contentIntegerStyle);
contentCell.setCellValue(Integer.parseInt(str));
}
}else{
contentCell.setCellStyle(contentStyle);
contentCell.setCellValue(str);
}
}
//写入成功一行数据递增行数
currentRowNum = currentRowNum + 1;
}
for(int i = 0 ; i<columnNames.size() ; i ++){
sheet.autoSizeColumn((short)i); //调整宽度
}
try {
this.setResponseHeader(response, sheetName);
OutputStream ops = response.getOutputStream();
tplWorkBook.write(ops);
ops.flush();
ops.close();
} catch (IOException e) {
}
}
public void exportExcelCompare(HttpServletResponse response, String sheetName, List<String> columnNames,
String sheetTitle, List<List<Object>> objects,int length) {
Workbook tplWorkBook = new XSSFWorkbook();
Map<String, CellStyle> cellStyleMap = styleMap(tplWorkBook);
// 表头样式
CellStyle headStyle = cellStyleMap.get("head");
CellStyle contentStyle = cellStyleMap.get("content");
// 生成一个表格
Sheet sheet = tplWorkBook.getSheet(sheetName);
if (sheet == null) {
sheet = tplWorkBook.createSheet(sheetName);
}
// 合并单元格
sheet.addMergedRegion(new CellRangeAddress(currentRowNum, currentRowNum, 0, columnNames.size() - 1));
// 产生表格标题行
Row rowMerged = sheet.createRow(currentRowNum);
Cell mergedCell = rowMerged.createCell(0);
mergedCell.setCellStyle(headStyle);
mergedCell.setCellValue(new XSSFRichTextString(sheetTitle));
//写入成功一行数据递增行数
currentRowNum = currentRowNum + 1;
// 产生表格表头列标题行
Row row = sheet.createRow(currentRowNum);
sheet.addMergedRegion(new CellRangeAddress(currentRowNum, currentRowNum, 0,length));
sheet.addMergedRegion(new CellRangeAddress(currentRowNum, currentRowNum, length+1,length*2+1));
Cell headerCell = row.createCell(0);
headerCell.setCellStyle(contentStyle);
headerCell.setCellValue("民航局");
Cell headerCells = row.createCell(8);
headerCells.setCellStyle(contentStyle);
headerCells.setCellValue("空管局");
//写入成功一行数据递增行数
currentRowNum = currentRowNum + 1;
//正文整数样式
CellStyle contentIntegerStyle = cellStyleMap.get("integer");
//正文带小数整数样式
CellStyle contentDoubleStyle = cellStyleMap.get("double");
for (List<Object> dataRow : objects) {
Row row1 = sheet.createRow(currentRowNum);
for (int j = 0; j < dataRow.size(); j++) {
Cell contentCell = row1.createCell(j);
Object dataObject = dataRow.get(j);
contentCell.setCellStyle(contentStyle);
String str = dataObject.toString();
if(str.contains("-") && str.contains(":") && str.contains(".0")){
str.trim();
str = str.substring(0, str.lastIndexOf(" "));
contentCell.setCellStyle(contentStyle);
contentCell.setCellValue(str);
}else if(this.isNum(str)){
if(str.contains(".")){
contentCell.setCellStyle(contentDoubleStyle);
contentCell.setCellValue(Double.parseDouble(str));
}else{
contentCell.setCellStyle(contentIntegerStyle);
contentCell.setCellValue(Integer.parseInt(str));
}
}else{
contentCell.setCellStyle(contentStyle);
contentCell.setCellValue(str);
}
}
//写入成功一行数据递增行数
currentRowNum = currentRowNum + 1;
}
for(int i = 0 ; i<columnNames.size() ; i ++){
sheet.autoSizeColumn((short)i); //调整宽度
}
try {
this.setResponseHeader(response, sheetName);
OutputStream ops = response.getOutputStream();
tplWorkBook.write(ops);
ops.flush();
ops.close();
} catch (IOException e) {
}
}
/**
* 设置响应头
* @param response
* @param fileName
*/
public void setResponseHeader(HttpServletResponse response, String fileName) {
try {
fileName = new String(fileName.getBytes(),"ISO8859-1");
response.setContentType("application/octet-stream;charset=ISO8859-1");
response.setHeader("Content-Disposition", "attachment;filename="+ fileName+".xlsx");
response.addHeader("Pargam", "no-cache");
response.addHeader("Cache-Control", "no-cache");
} catch (Exception ex) {
ex.printStackTrace();
}
}
/**
* 判断是否是数值型数据
*/
public boolean isNum(String str) {
try {
new BigDecimal(str);
if(str.contains("E")){
return false;
}
return true;
} catch (Exception e) {
return false;
}
}
/**
* 单元格样式(Integer)列表
*/
private CellStyle createCellContent4IntegerStyle(Workbook workbook) {
CellStyle style = workbook.createCellStyle();
// 设置边框样式
style.setBorderBottom(XSSFCellStyle.BORDER_THIN);
style.setBorderLeft(XSSFCellStyle.BORDER_THIN);
style.setBorderRight(XSSFCellStyle.BORDER_THIN);
style.setBorderTop(XSSFCellStyle.BORDER_THIN);
//设置对齐样式
style.setAlignment(XSSFCellStyle.ALIGN_CENTER);
// 生成字体
Font font = workbook.createFont();
// 正文样式
style.setFillPattern(XSSFCellStyle.NO_FILL);
style.setVerticalAlignment(XSSFCellStyle.VERTICAL_CENTER);
font.setBoldweight(XSSFFont.BOLDWEIGHT_NORMAL);
// 把字体应用到当前的样式
style.setFont(font);
style.setDataFormat(HSSFDataFormat.getBuiltinFormat("#,##0"));//数据格式只显示整数
return style;
}
/**
* 单元格样式(Double)列表
*/
private CellStyle createCellContent4DoubleStyle(Workbook workbook) {
CellStyle style = workbook.createCellStyle();
// 设置边框样式
style.setBorderBottom(XSSFCellStyle.BORDER_THIN);
style.setBorderLeft(XSSFCellStyle.BORDER_THIN);
style.setBorderRight(XSSFCellStyle.BORDER_THIN);
style.setBorderTop(XSSFCellStyle.BORDER_THIN);
//设置对齐样式
style.setAlignment(XSSFCellStyle.ALIGN_CENTER);
// 生成字体
Font font = workbook.createFont();
// 正文样式
style.setFillPattern(XSSFCellStyle.NO_FILL);
style.setVerticalAlignment(XSSFCellStyle.VERTICAL_CENTER);
font.setBoldweight(XSSFFont.BOLDWEIGHT_NORMAL);
// 把字体应用到当前的样式
style.setFont(font);
style.setDataFormat(HSSFDataFormat.getBuiltinFormat("#,##0.00"));//保留两位小数点
return style;
}
/**
* 创建单元格表头样式
*
* @param workbook 工作薄
*/
private CellStyle createCellHeadStyle(Workbook workbook) {
CellStyle style = workbook.createCellStyle();
// 设置边框样式
style.setBorderBottom(XSSFCellStyle.BORDER_THIN);
style.setBorderLeft(XSSFCellStyle.BORDER_THIN);
style.setBorderRight(XSSFCellStyle.BORDER_THIN);
style.setBorderTop(XSSFCellStyle.BORDER_THIN);
//设置对齐样式
style.setAlignment(XSSFCellStyle.ALIGN_CENTER);
// 生成字体
Font font = workbook.createFont();
// 表头样式
style.setFillPattern(XSSFCellStyle.SOLID_FOREGROUND);
style.setFillForegroundColor(HSSFColor.GREY_25_PERCENT.index);
font.setFontHeightInPoints((short) 12);
font.setBoldweight(XSSFFont.BOLDWEIGHT_BOLD);
// 把字体应用到当前的样式
style.setFont(font);
return style;
}
/**
* 创建单元格正文样式
*
* @param workbook 工作薄
*/
private CellStyle createCellContentStyle(Workbook workbook) {
CellStyle style = workbook.createCellStyle();
// 设置边框样式
style.setBorderBottom(XSSFCellStyle.BORDER_THIN);
style.setBorderLeft(XSSFCellStyle.BORDER_THIN);
style.setBorderRight(XSSFCellStyle.BORDER_THIN);
style.setBorderTop(XSSFCellStyle.BORDER_THIN);
//设置对齐样式
style.setAlignment(XSSFCellStyle.ALIGN_CENTER);
// 生成字体
Font font = workbook.createFont();
// 正文样式
style.setFillPattern(XSSFCellStyle.NO_FILL);
style.setVerticalAlignment(XSSFCellStyle.VERTICAL_CENTER);
font.setBoldweight(XSSFFont.BOLDWEIGHT_NORMAL);
// 把字体应用到当前的样式
style.setFont(font);
return style;
}
/**
* 单元格样式列表
*/
private Map<String, CellStyle> styleMap(Workbook workbook) {
Map<String, CellStyle> styleMap = new LinkedHashMap<String, CellStyle>();
styleMap.put("head", createCellHeadStyle(workbook));
styleMap.put("content", createCellContentStyle(workbook));
styleMap.put("integer", createCellContent4IntegerStyle(workbook));
styleMap.put("double", createCellContent4DoubleStyle(workbook));
return styleMap;
}
}
批量导出Excel（.xlsx格式）
猜你喜欢
转载自ear.iteye.com/blog/2382733
今日推荐
周排行