java poi 模板 导出_java后台poi根据模板导出excel
public classExcelUtils {private static final String INSPECTIONRECORD_SURFACE_TEMPLET_PATH = "download\\template\\materialList.xlsx";private static XSSFCellStyle cellstyle = null;public static void exportBom(HttpServletRequest request, HttpServletResponse response, Map map) throwsIOException {//模板的路径，这个在自己的项目中很容易弄错，相对位置一定要写对啊
String psth = request.getRealPath("/") +INSPECTIONRECORD_SURFACE_TEMPLET_PATH;
Workbook webBook=readExcel(psth);
Sheet sheet= webBook.getSheetAt(0);//调用样式方法
cellstyle =createCellStyle(webBook);
sheet.setColumnWidth(0, 3766);//列宽
sheet.setColumnWidth(1, 4766);//列宽//开始操作模板，找到某行某列(某个cell)，需要注意的是这里有个坑，行和列的计数都是从0开始的//一次数据插入的位置不对，别灰心，多试几次就好啦，你要是能看懂我下面的代码，数据插在了什么位置，你就明白了//打印时间
int rows = 0;
Row row=sheet.getRow(rows);//调用方法，赋值并给定样式(写样式的时候这个工具类只能用XSSF而不能用HSSF,不然样式会没响应)
setCellStyleWithValue(row.createCell(0),(String) map.get("title"));
rows= 2;
row=sheet.getRow(rows);
row.createCell(1).setCellValue((String) map.get("date"));//setCellStyleWithValue(row.createCell(1),(String) map.get("date"));//负责人
rows = 3;
row=sheet.getRow(rows);
row.createCell(1).setCellValue((String) map.get("leader"));//setCellStyleWithValue(row.createCell(1),(String) map.get("leader"));//审核人
rows = 4;
row=sheet.getRow(rows);
row.createCell(1).setCellValue((String) map.get("Auditleader"));//setCellStyleWithValue(row.createCell(1),(String) map.get("Auditleader"));//在调用模板的时候，数据的插入不能直接应用模板行，不然数据会覆盖掉哪行
rows = 7;
row=sheet.createRow(rows);
row.createCell(0).setCellValue("编号");
row.createCell(1).setCellValue("名称");
row.createCell(2).setCellValue("规格");
row.createCell(3).setCellValue("数量");
row.createCell(4).setCellValue("益值");
row.setRowStyle(cellstyle);
List> list = (List>) map.get("resultList");for (int i = 0; i < list.size(); i++) {
row= sheet.createRow(rows++);/*row.createCell(0).setCellValue(StringUtils.objToStr(list.get(i).get("物料编号")));
row.createCell(1).setCellValue(StringUtils.objToStr(list.get(i).get("物料名称")));
row.createCell(2).setCellValue(StringUtils.objToStr(list.get(i).get("物料规格")));
row.createCell(3).setCellValue(Double.parseDouble(StringUtils.objToStr(list.get(i).get("物料消耗数量"))));
row.createCell(4).setCellValue(Float.parseFloat(StringUtils.objToStr(list.get(i).get("物料消耗损益值"))));*/setCellStyleWithValue(row.createCell(0),StringUtils.objToStr(list.get(i).get("物料编号")));
setCellStyleWithValue(row.createCell(1),StringUtils.objToStr(list.get(i).get("物料名称")));
setCellStyleWithValue(row.createCell(2),StringUtils.objToStr(list.get(i).get("物料规格")));
setCellStyleWithValue(row.createCell(3),Double.parseDouble(StringUtils.objToStr(list.get(i).get("物料消耗数量"))));
setCellStyleWithValue(row.createCell(4),Float.parseFloat(StringUtils.objToStr(list.get(i).get("物料消耗损益值"))));
}
writeExcel(response, webBook, (String) map.get("title"));
}private staticXSSFWorkbook readExcel(String filePath) {
InputStream in= null;
XSSFWorkbook work= null;try{
in= newFileInputStream(filePath);
work= newXSSFWorkbook(in);
}catch(FileNotFoundException e) {
System.out.println("文件路径错误");
e.printStackTrace();
}catch(IOException e) {
System.out.println("文件输入流错误");
e.printStackTrace();
}returnwork;
}private static void writeExcel(HttpServletResponse response, Workbook work, String fileName) throwsIOException {
OutputStream out= null;try{
out=response.getOutputStream();
response.setContentType("application/ms-excel;charset=UTF-8");
response.setHeader("Content-Disposition", "attachment;filename=".concat(String.valueOf(URLEncoder.encode(fileName+ ".xls", "UTF-8"))));
work.write(out);
}catch(IOException e) {
System.out.println("输出流错误");
e.printStackTrace();
}finally{
out.close();
}
}private staticCell setCellStyleWithStyleAndValue(CellStyle style, Cell cell, String value) {
cell.setCellStyle(style);
cell.setCellValue(value);returncell;
}private staticCell setCellStyleWithStyleAndValue(CellStyle style, Cell cell, Double value) {
cell.setCellStyle(style);
cell.setCellValue(value);returncell;
}private staticCell setCellStyleWithValue(Cell cell, String value) {
cell.setCellStyle(cellstyle);
cell.setCellValue(value);returncell;
}private staticCell setCellStyleWithStyleAndValue(CellStyle style, Cell cell, RichTextString value) {
cell.setCellStyle(style);
cell.setCellValue(value);returncell;
}private static Cell setCellStyleWithValue(Cell cell, intvalue) {
cell.setCellStyle(cellstyle);
cell.setCellValue(value);returncell;
}private static Cell setCellStyleWithValue(Cell cell, doublevalue) {
cell.setCellStyle(cellstyle);
cell.setCellValue(value);returncell;
}private staticXSSFCellStyle createCellStyle(Workbook wb) {
cellstyle=(XSSFCellStyle) wb.createCellStyle();
cellstyle.setAlignment(XSSFCellStyle.ALIGN_CENTER);//cellstyle.setBorderBottom(XSSFCellStyle.BORDER_THIN);//cellstyle.setBorderLeft(XSSFCellStyle.BORDER_THIN);//cellstyle.setBorderRight(XSSFCellStyle.BORDER_THIN);//cellstyle.setBorderTop(XSSFCellStyle.BORDER_THIN);
cellstyle.setVerticalAlignment(XSSFCellStyle.VERTICAL_CENTER);returncellstyle;
}
}
我自己的空模板，有数据的图就不贴出来了！
