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Java操作Excel

Springmvc 使用 AbstractExcelView 导出excel

[javascript] view plain copy

$("#exportBtn").click(function () {
location.href = "${pageContext.request.contextPath}/report/export?" + $("form").serialize()
});

参考了网上资料，实现Spring mvc 下Excel导出，如有更好方法请大家拍砖

1.新建类继承AbstractExcelView

Java代码

import java.io.OutputStream;
import java.util.Map;
import javacommon.util.MyUtils;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.springframework.web.servlet.view.document.AbstractExcelView;
public class ViewExcel extends AbstractExcelView {
@Override
protected void buildExcelDocument(Map<String, Object> obj,
HSSFWorkbook workbook, HttpServletRequest request, HttpServletResponse response)
throws Exception {
HSSFSheet sheet = workbook.createSheet("list");
sheet.setDefaultColumnWidth((short) 12);
HSSFCell cell = getCell(sheet, 0, 0);
setText(cell, "Spring Excel test");
HSSFCellStyle dateStyle = workbook.createCellStyle();
//dateStyle.setDataFormat(HSSFDataFormat.getBuiltinFormat("mm/dd/yyyy"));
cell = getCell(sheet, 1, 0);
cell.setCellValue("日期：2008-10-23");
//cell.setCellStyle(dateStyle);
getCell(sheet, 2, 0).setCellValue("测试1");
getCell(sheet, 2, 1).setCellValue("测试2");
HSSFRow sheetRow = sheet.createRow(3);
for (short i = 0; i < 10; i++) {
sheetRow.createCell(i).setCellValue(i * 10);
}
String filename = "测试.xls";//设置下载时客户端Excel的名称
filename = MyUtils.encodeFilename(filename, request);//处理中文文件名
response.setContentType("application/vnd.ms-excel");
response.setHeader("Content-disposition", "attachment;filename=" + filename);
OutputStream ouputStream = response.getOutputStream();
workbook.write(ouputStream);
ouputStream.flush();
ouputStream.close();
}
}

处理中文文件名的方法：

Java代码

/**
* 设置下载文件中文件的名称
*
* @param filename
* @param request
* @return
*/
public static String encodeFilename(String filename, HttpServletRequest request) {
/**
* 获取客户端浏览器和操作系统信息
* 在IE浏览器中得到的是：User-Agent=Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; Maxthon; Alexa Toolbar)
* 在Firefox中得到的是：User-Agent=Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.7.10) Gecko/20050717 Firefox/1.0.6
*/
String agent = request.getHeader("USER-AGENT");
try {
if ((agent != null) && (-1 != agent.indexOf("MSIE"))) {
String newFileName = URLEncoder.encode(filename, "UTF-8");
newFileName = StringUtils.replace(newFileName, "+", "%20");
if (newFileName.length() > 150) {
newFileName = new String(filename.getBytes("GB2312"), "ISO8859-1");
newFileName = StringUtils.replace(newFileName, " ", "%20");
}
return newFileName;
}
if ((agent != null) && (-1 != agent.indexOf("Mozilla")))
return MimeUtility.encodeText(filename, "UTF-8", "B");
return filename;
} catch (Exception ex) {
return filename;
}
}

2接下来在你的下载 Controller里面返回ModelAndView 即可

Java代码

/**
* 导出Excel
* @param model
* @param projectId
* @param request
* @return
*/
@RequestMapping(value="/dcExcel",method=RequestMethod.GET)
public ModelAndView toDcExcel(ModelMap model, HttpServletRequest request){
List list = new ArrayList(); //测试数据没有用到
Map map = new HashMap();
list.add("test1");
list.add("test2");
map.put("list", list);
ViewExcel viewExcel = new ViewExcel();
return new ModelAndView(viewExcel, model);
}

代码很简单，只实现下载，关于Excel 格式数据方面请参考 poi 框架

POI官方网址：http://poi.apache.org/
POI 的功能实在很强大，而且是apache的子项目，它下面又包含一些Component，比如处理Excel XLS，PowerPoint PPT，Word DOC，Outlook MSG，Excel XLSX等，下面就简单讲下poi处理excel的一些内容。

下面的jar包来源于当前最新的poi 3.6版本。

1.poi来生成excel

package com.test.poi;

import java.io.FileOutputStream;
import java.util.Date;

import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFDataFormat;
import org.apache.poi.hssf.usermodel.HSSFFont;
import org.apache.poi.hssf.usermodel.HSSFHyperlink;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.util.HSSFColor;
import org.apache.poi.ss.util.CellRangeAddress;

public class WriteExcel {

public static void main(String[] args) throws Exception {
// 创建Excel的工作书册 Workbook,对应到一个excel文档
HSSFWorkbook wb = new HSSFWorkbook();

// 创建Excel的工作sheet,对应到一个excel文档的tab
HSSFSheet sheet = wb.createSheet("sheet1");

    // 设置excel每列宽度
    sheet.setColumnWidth(0, 4000);
    sheet.setColumnWidth(1, 3500);

    // 创建字体样式
    HSSFFont font = wb.createFont();
    font.setFontName("Verdana");
    font.setBoldweight((short) 100);
    font.setFontHeight((short) 300);
    font.setColor(HSSFColor.BLUE.index);

    // 创建单元格样式
    HSSFCellStyle style = wb.createCellStyle();
    style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
    style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
    style.setFillForegroundColor(HSSFColor.LIGHT_TURQUOISE.index);
    style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);

    // 设置边框
    style.setBottomBorderColor(HSSFColor.RED.index);
    style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
    style.setBorderLeft(HSSFCellStyle.BORDER_THIN);
    style.setBorderRight(HSSFCellStyle.BORDER_THIN);
    style.setBorderTop(HSSFCellStyle.BORDER_THIN);

style.setFont(font);// 设置字体

    // 创建Excel的sheet的一行
    HSSFRow row = sheet.createRow(0);
    row.setHeight((short) 500);// 设定行的高度
    // 创建一个Excel的单元格
    HSSFCell cell = row.createCell(0);

// 合并单元格(startRow，endRow，startColumn，endColumn)
sheet.addMergedRegion(new CellRangeAddress(0, 0, 0, 2));

    // 给Excel的单元格设置样式和赋值
    cell.setCellStyle(style);
    cell.setCellValue("hello world");

    // 设置单元格内容格式
    HSSFCellStyle style1 = wb.createCellStyle();
    style1.setDataFormat(HSSFDataFormat.getBuiltinFormat("h:mm:ss"));

style1.setWrapText(true);// 自动换行

row = sheet.createRow(1);

// 设置单元格的样式格式

    cell = row.createCell(0);
    cell.setCellStyle(style1);
    cell.setCellValue(new Date());

    // 创建超链接
    HSSFHyperlink link = new HSSFHyperlink(HSSFHyperlink.LINK_URL);
    link.setAddress("http://www.baidu.com");
    cell = row.createCell(1);
    cell.setCellValue("百度");
    cell.setHyperlink(link);// 设定单元格的链接

    FileOutputStream os = new FileOutputStream("e:\\workbook.xls");
    wb.write(os);
    os.close();
}

}

2.poi读取excel
package com.test.poi;

import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Iterator;

import org.apache.poi.hssf.extractor.ExcelExtractor;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;

public class ReadExcel {

public static void main(String[] args) throws Exception {
    HSSFWorkbook wb = null;
    POIFSFileSystem fs = null;
    try {
      fs = new POIFSFileSystem(new FileInputStream("e:\\workbook.xls"));
      wb = new HSSFWorkbook(fs);
    } catch (IOException e) {
      e.printStackTrace();
    }

    HSSFSheet sheet = wb.getSheetAt(0);
    HSSFRow row = sheet.getRow(0);
    HSSFCell cell = row.getCell(0);
    String msg = cell.getStringCellValue();
    System.out.println(msg);
}
public static void method2() throws Exception {

InputStream is = new FileInputStream("e:\\workbook.xls");
HSSFWorkbook wb = new HSSFWorkbook(new POIFSFileSystem(is));

    ExcelExtractor extractor = new ExcelExtractor(wb);
    extractor.setIncludeSheetNames(false);
    extractor.setFormulasNotResults(false);
    extractor.setIncludeCellComments(true);

String text = extractor.getText();
System.out.println(text);
}

public static void method3() throws Exception {
HSSFWorkbook wb = new HSSFWorkbook(new FileInputStream("e:\\workbook.xls"));
HSSFSheet sheet = wb.getSheetAt(0);

    for (Iterator<Row> iter = (Iterator<Row>) sheet.rowIterator(); iter.hasNext();) {
      Row row = iter.next();
      for (Iterator<Cell> iter2 = (Iterator<Cell>) row.cellIterator(); iter2.hasNext();) {
        Cell cell = iter2.next();
        String content = cell.getStringCellValue();// 除非是sring类型，否则这样迭代读取会有错误
        System.out.println(content);
      }
    }
}
}

注：HSSFWorkbook，XSSFWorkbook的区别：前者是解析出来excel 2007 以前版本的，后缀名为xls的，后者是解析excel 2007 版的，后缀名为xlsx。

在实际应用中，要对excel文件进行判断，该用哪个workbook来对其进行解析处理，而且，通常把这些方法都做了相应封装，使其更面向对象，上例只是main方法的简单示例而已，仅供参考！

poi API大全

(2014-04-18 16:00:41)

标签：

poiapi大全

it

分类：计算机

一、 POI简介

Apache POI是Apache软件基金会的开放源码函式库，POI提供API给Java程序对Microsoft Office格式档案读和写的功能。

二、 HSSF概况

HSSF 是Horrible SpreadSheet Format的缩写，通过HSSF，你可以用纯Java代码来读取、写入、修改Excel文件。HSSF 为读取操作提供了两类API：usermodel和eventusermodel，即“用户模型”和“事件-用户模型”。

三、 POI EXCEL文档结构类

HSSFWorkbook excel文档对象

HSSFSheet excel的sheet HSSFRow excel的行

HSSFCell excel的单元格 HSSFFont excel字体

HSSFName 名称 HSSFDataFormat 日期格式

HSSFHeader sheet头

HSSFFooter sheet尾

HSSFCellStyle cell样式

HSSFDateUtil 日期

HSSFPrintSetup 打印

HSSFErrorConstants 错误信息表

四、 EXCEL常用操作方法

1、得到Excel常用对象

[c-sharp] view plaincopyprint?

POIFSFileSystem fs=newPOIFSFileSystem(new FileInputStream("d:/test.xls"));
//得到Excel工作簿对象
HSSFWorkbook wb = new HSSFWorkbook(fs);
//得到Excel工作表对象
HSSFSheet sheet = wb.getSheetAt(0);
//得到Excel工作表的行
HSSFRow row = sheet.getRow(i);
//得到Excel工作表指定行的单元格
HSSFCell cell = row.getCell((short) j);
cellStyle = cell.getCellStyle();//得到单元格样式

2、建立Excel常用对象

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HSSFWorkbook wb = new HSSFWorkbook();//创建Excel工作簿对象
HSSFSheet sheet = wb.createSheet("new sheet");//创建Excel工作表对象
HSSFRow row = sheet.createRow((short)0); //创建Excel工作表的行
cellStyle = wb.createCellStyle();//创建单元格样式
row.createCell((short)0).setCellStyle(cellStyle); //创建Excel工作表指定行的单元格
row.createCell((short)0).setCellValue(1); //设置Excel工作表的值

3、设置sheet名称和单元格内容

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wb.setSheetName(1, "第一张工作表",HSSFCell.ENCODING_UTF_16);
cell.setEncoding((short) 1);
cell.setCellValue("单元格内容");

4、取得sheet的数目

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wb.getNumberOfSheets()

5、根据index取得sheet对象

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HSSFSheet sheet = wb.getSheetAt(0);

6、取得有效的行数

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int rowcount = sheet.getLastRowNum();