Java向Excel文件写入数据

1、依赖包配置

 
   net.sourceforge.jexcelapi
   jxl
   2.6.12

 

2、java实现类

package com.bjsd.apps.bidding.service.impl;

import java.io.FileOutputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;

import jxl.Workbook;
import jxl.format.Alignment;
import jxl.format.Border;
import jxl.format.BorderLineStyle;
import jxl.write.Label;
import jxl.write.WritableCellFormat;
import jxl.write.WritableFont;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;
import jxl.write.WriteException;

public class ExcelOperaation {
  public void writeExcel(String path, List list, String sheet, String[] title) {
    try {
      // 创建Excel工作薄
      WritableWorkbook wwb = null;
      // 新建立一个jxl文件
      OutputStream os = new FileOutputStream(path);
      wwb = Workbook.createWorkbook(os);
      // 添加第一个工作表并设置第一个Sheet的名字
      WritableSheet sheets = wwb.createSheet(sheet, 1);
      Label label;
      for (int i = 0; i < title.length; i++) {
        // Label(x,y,z) 代表单元格的第x+1列，第y+1行, 内容z
        // 在Label对象的子对象中指明单元格的位置和内容
        // label = new Label(i, 0, title[i]);
        label = new Label(i, 0, title[i], getHeader());
        // 设置列宽
        sheets.setColumnView(i, 20);
        // sheets.setColumnView(4, 100);
        // 将定义好的单元格添加到工作表中
        sheets.addCell(label);
      }

      // 设置单元格属性
      WritableCellFormat wc = new WritableCellFormat();
      // 设置居中
      wc.setAlignment(Alignment.CENTRE);
      // 设置边框线
      wc.setBorder(Border.ALL, BorderLineStyle.THIN);

      for (int i = 0; i < list.size(); i++) {
        String[] arrData = list.get(i);
        for (int j = 0; j < arrData.length; j++) {
          // 向特定单元格写入数据
          // sheets.setColumnView(j, 20);
          label = new Label(j, 1 + i, arrData[j], wc);
          sheets.addCell(label);
        }
      }
      // 写入数据
      wwb.write();
      // 关闭文件
      wwb.close();
    }
    catch (Exception e) {
      e.printStackTrace();
      return;
    }
  }

  public static WritableCellFormat getHeader() {
    // 定义字体
    WritableFont font = new WritableFont(WritableFont.TIMES, 10, WritableFont.BOLD);
    try {
      // 黑色字体
      font.setColour(jxl.format.Colour.BLACK);
    }
    catch (WriteException e1) {
      e1.printStackTrace();
    }
    WritableCellFormat format = new WritableCellFormat(font);
    try {
      // 左右居中
      format.setAlignment(jxl.format.Alignment.CENTRE);
      // 上下居中
      format.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);
      // 黑色边框
      format.setBorder(Border.ALL, BorderLineStyle.THIN, jxl.format.Colour.BLACK);
      // 黄色背景
      format.setBackground(jxl.format.Colour.YELLOW);
    }
    catch (WriteException e) {
      e.printStackTrace();
    }
    return format;
  }

  public static void main(String args[]) {
    ExcelOperaation excel = new ExcelOperaation();
    // 文件保存路径
    String path = "E:/test.xlsx";
    // 准备测试数据
    List list = new ArrayList<>();
    for (int i = 0; i < 5; i++) {
      String content[] = { i + "", "hello" };
      list.add(content);
    }

    // sheet页名称
    String sheet = "hhh";
    // 列名
    String title[] = { "id", "content" };
    excel.writeExcel(path, list, sheet, title);
  }
}