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)

偶遇晨光

2016-05-26