在 Java 中创建 Excel 文件
我想创建一个 Excel 文件并写入数据,就像用 Java 编写文本文件一样。我试图将文件扩展名从 .txt
更改为 .xls
。但我想在 Excel 文件中加粗字母。我怎样才能做到这一点?
我曾尝试使用 JXL API,但每次我必须创建一个标签时,我都不想添加任何标签。不能O编辑表格的行和列吗?
原文由 guna 发布,翻译遵循 CC BY-SA 4.0 许可协议
回答:
用easyPoi,以下是类似代码:
@RequestMapping(value = "/exportXls") public ModelAndView exportXls(HttpServletRequest request, HttpServletResponse response) {
// Step.1 组装查询条件
QueryWrapper<ExcelObject> queryWrapper = null;
try {
String paramsStr = request.getParameter("paramsStr");
if (oConvertUtils.isNotEmpty(paramsStr)) {
String deString = URLDecoder.decode(paramsStr, "UTF-8");
ExcelObject excelObject = JSON.parseObject(deString, ExcelObject.class);
queryWrapper = QueryGenerator.initQueryWrapper(excelObject, request.getParameterMap());
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
//Step.2 AutoPoi 导出Excel
ModelAndView mv = new ModelAndView(new JeecgEntityExcelView());
List<ExcelObject> pageList = excelObjectService.list(queryWrapper);
//导出文件名称
mv.addObject(NormalExcelConstants.FILE_NAME, "Excel列表");
mv.addObject(NormalExcelConstants.CLASS, ExcelObject.class);
mv.addObject(NormalExcelConstants.PARAMS, new ExportParams("Excel列表数据", "导出人:xxx", "导出信息"));
mv.addObject(NormalExcelConstants.DATA_LIST, pageList);
return mv;
}
回答:
//Find jar from here "http://poi.apache.org/download.html"import java.io.*;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.usermodel.HSSFRow;
public class CreateExlFile{
public static void main(String[]args) {
try {
String filename = "C:/NewExcelFile.xls" ;
HSSFWorkbook workbook = new HSSFWorkbook();
HSSFSheet sheet = workbook.createSheet("FirstSheet");
HSSFRow rowhead = sheet.createRow((short)0);
rowhead.createCell(0).setCellValue("No.");
rowhead.createCell(1).setCellValue("Name");
rowhead.createCell(2).setCellValue("Address");
rowhead.createCell(3).setCellValue("Email");
HSSFRow row = sheet.createRow((short)1);
row.createCell(0).setCellValue("1");
row.createCell(1).setCellValue("Sankumarsingh");
row.createCell(2).setCellValue("India");
row.createCell(3).setCellValue("sankumarsingh@gmail.com");
FileOutputStream fileOut = new FileOutputStream(filename);
workbook.write(fileOut);
fileOut.close();
workbook.close();
System.out.println("Your excel file has been generated!");
} catch ( Exception ex ) {
System.out.println(ex);
}
}
}
原文由 Sankumarsingh 发布,翻译遵循 CC BY-SA 3.0 许可协议
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