生成Excel文件并写入数据

 导入的包是jxl的包

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import jxl.Workbook;
import jxl.write.Label;
import jxl.write.WritableCellFormat;
import jxl.write.WritableFont;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;
public class WriteExcel {
  //btlist标题栏和相关字段
  //nrlist内容
  //wjm文件名
  public static void WriteExcel(List<Fields> btlist,List<Map<String, Object>> nrlist,String wjm){
    try {
      int length=btlist.size();//获取字段数目
      FileOutputStream fos=new FileOutputStream("C:\\zc.xls");//文件的输出位置
      WritableWorkbook workbook=Workbook.createWorkbook(fos);
      WritableSheet sheet=workbook.createSheet("First sheet", 0);
      //设置一下标题样式
      WritableFont bold=new WritableFont(WritableFont.ARIAL,10,WritableFont.BOLD);
      WritableCellFormat btformat=new WritableCellFormat(bold);
      //保存标题
      for (int i = 0; i < length; i++) {
         Label label=new Label(i, 0, btlist.get(i).getFIELD_SHOW_NAME(),btformat);
         sheet.addCell(label);
      }
      //保存内容
      for (int i = 0; i <nrlist.size(); i++) {
        for (int j = 0; j <length; j++) {
          Label label=new Label(j, i+1, String.valueOf(nrlist.get(i).get(btlist.get(j).getFIELD_NAME())));
          sheet.addCell(label);
        }
      }
      workbook.write();
      workbook.close();
      fos.close();
    } catch (Exception e) {
      e.printStackTrace();
      throw new RuntimeException("失败",e);
    }
  }
  public static void main(String[] args) {   } }




如果用poi的话,方法如下(这个是直接在编辑器里写的,可能有小错误,但大概方法就是这样)

import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.stereotype.Service;

/**
* 生成excel文件
*
*/
@Service
public class TaskStepsFileService implements ITaskStepsFileService{

  private static final String FILE_NAME= "FileName";


  public void CreateExcel(List<List<String>> datalist) throws IOException {
    Workbook wb = new XSSFWorkbook();//如果想生成03版的,换一个Workbook就行了

    createDataSheet(wb, FILE_NAME, datalist);

    FileOutputStream fileOut = new FileOutputStream("C:/zc.xlsx");
    wb.write(fileOut);
    fileOut.close();
    wb.close();
  }

 

  private Sheet createDataSheet(Workbook wb, String sheetName,List<List<String>> listDatas) {
    Sheet sheet = wb.createSheet(sheetName);
    int rowIndex = 0;

    //这里循环放入内容
    for (int j = 0; j <listDatas.size(); j++) {
      Row row=sheet.createRow(rowIndex++);
      for (int i = 0; i <listData.get(j).size(); i++) {
      Cell cell=row.createCell(i);
      cell.setCellValue(listData.get(j).get(i));
    }

    return sheet;
  }

}

 
posted @ 2018-02-06 16:28  Ice_Blue_Brother  阅读(593)  评论(0编辑  收藏  举报