java写入excel文件poi

java写入excel文件

java写入excel文件poi，支持xlsx与xls，没有文件自动创建

package com.utils;

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

import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.util.HSSFColor;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.Font;
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.ss.util.CellRangeAddress;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import com.exception.SimpleException;

/**
 * 从excel读取数据/往excel中写入 excel有表头，表头每列的内容对应实体类的属性
 *
 * @author nagsh
 *
 */
public class ExcelManage {  

    public static void main(String[] args) throws IOException {
        String path = "E:/";
        String fileName = "被保险人员清单(新增)04";
        String fileType = "xlsx";
        List<InsuraceExcelBean> list = new ArrayList<>();
        for(int i=0; i<6; i++){
            InsuraceExcelBean bean = new InsuraceExcelBean();
            bean.setInsuraceUser("test"+i);
            bean.setBankCardId("4444444444"+i+","+"55544444444444"+i+","+"999999999999999"+i);
            bean.setIdCard("666666"+i);
            bean.setBuyTime("2016-05-06");
            bean.setInsEndTime("2016-05-07");
            bean.setInsStartTime("2017-05-06");
            bean.setMoney("20,000");
            bean.setType("储蓄卡");

            list.add(bean);
        }
        String title[] = {"被保险人姓名","身份证号","账户类型","银行卡号","保险金额(元)","购买时间","保单生效时间","保单失效时间"};
//        createExcel("E:/被保险人员清单(新增).xlsx","sheet1",fileType,title);  

        writer(path, fileName, fileType,list,title);
    }  

    @SuppressWarnings("resource")
    public static void writer(String path, String fileName,String fileType,List<InsuraceExcelBean> list,String titleRow[]) throws IOException {
        Workbook wb = null;
        String excelPath = path+File.separator+fileName+"."+fileType;
        File file = new File(excelPath);
        Sheet sheet =null;
        //创建工作文档对象
        if (!file.exists()) {
            if (fileType.equals("xls")) {
                wb = new HSSFWorkbook();

            } else if(fileType.equals("xlsx")) {

                    wb = new XSSFWorkbook();
            } else {
                throw new SimpleException("文件格式不正确");
            }
            //创建sheet对象
            sheet = (Sheet) wb.createSheet("sheet1");
            OutputStream outputStream = new FileOutputStream(excelPath);
            wb.write(outputStream);
            outputStream.flush();
            outputStream.close();

        } else {
            if (fileType.equals("xls")) {
                wb = new HSSFWorkbook();  

            } else if(fileType.equals("xlsx")) {
                wb = new XSSFWorkbook();  

            } else {
                throw new SimpleException("文件格式不正确");
            }
        }
         //创建sheet对象
        if (sheet==null) {
            sheet = (Sheet) wb.createSheet("sheet1");
        }

        //添加表头
        Row row = sheet.createRow(0);
        Cell cell = row.createCell(0);
        row.setHeight((short) 540);
        cell.setCellValue("被保险人员清单");    //创建第一行    

        CellStyle style = wb.createCellStyle(); // 样式对象
        // 设置单元格的背景颜色为淡蓝色
        style.setFillForegroundColor(HSSFColor.PALE_BLUE.index); 

        style.setVerticalAlignment(CellStyle.VERTICAL_CENTER);// 垂直
        style.setAlignment(CellStyle.ALIGN_CENTER);// 水平
        style.setWrapText(true);// 指定当单元格内容显示不下时自动换行

        cell.setCellStyle(style); // 样式，居中

        Font font = wb.createFont();
        font.setBoldweight(Font.BOLDWEIGHT_BOLD);
        font.setFontName("宋体");
        font.setFontHeight((short) 280);
        style.setFont(font);
        // 单元格合并
        // 四个参数分别是：起始行，起始列，结束行，结束列
        sheet.addMergedRegion(new CellRangeAddress(0, 0, 0, 7));
        sheet.autoSizeColumn(5200);

        row = sheet.createRow(1);    //创建第二行
        for(int i = 0;i < titleRow.length;i++){
            cell = row.createCell(i);
            cell.setCellValue(titleRow[i]);
            cell.setCellStyle(style); // 样式，居中
            sheet.setColumnWidth(i, 20 * 256);
        }
        row.setHeight((short) 540); 

        //循环写入行数据
        for (int i = 0; i < list.size(); i++) {
            row = (Row) sheet.createRow(i+2);
            row.setHeight((short) 500);
            row.createCell(0).setCellValue(( list.get(i)).getInsuraceUser());
            row.createCell(1).setCellValue(( list.get(i)).getIdCard());
            row.createCell(2).setCellValue(( list.get(i)).getType());
            row.createCell(3).setCellValue(( list.get(i)).getBankCardId());
            row.createCell(4).setCellValue(( list.get(i)).getMoney());
            row.createCell(5).setCellValue(( list.get(i)).getBuyTime());
            row.createCell(6).setCellValue(( list.get(i)).getInsStartTime());
            row.createCell(7).setCellValue(( list.get(i)).getInsEndTime());
        }  

        //创建文件流
        OutputStream stream = new FileOutputStream(excelPath);
        //写入数据
        wb.write(stream);
        //关闭文件流
        stream.close();
    }  

}  

可以直接测试通过

poi处理，要jar的可以去下载也可以留言传送过去poi-3.12.jar，poi-ooxml-3.12.jar，poi-ooxml-schemas-3.12.jar

下载地址 http://i.cnblogs.com/Files.aspx  (poi.zip包)

网盘下载jar包：

https://pan.baidu.com/s/18XXedGT0KToE4Tpihf4Quw 提取码：mers

偶遇晨光

2016-05-26