java瀏覽器導出excel的Demo

前端直接訪問輸出流即可：window.location.href="${baseURL}/aaa/bbb";

注意瀏覽器下載不能使用Ajax異步下載，否則沒有效果

工具類：直接調用exportData方法即可，參數是前端請求發出的

package com.wb.util;

import java.io.IOException;
import java.io.OutputStream;
import java.net.URLEncoder;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFPalette;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
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.IndexedColors;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;

import com.wb.po.Person;

public class ExportToExcelUtil {
	
	public static boolean exportData(HttpServletRequest request, HttpServletResponse response){
		String fileName = getFileName();
		HSSFWorkbook workbook = new HSSFWorkbook();
		//填充內容
		createSheet(workbook, fileName, 10);
		//寫入到輸出流
		try {
            OutputStream outputStream = response.getOutputStream();
			try {
				fileName = URLEncoder.encode(fileName, "utf8");
			} catch (Exception e) {
				e.printStackTrace();
	            return false;
			}
			response.setCharacterEncoding("UTF-8");
			response.setContentType("application/msexcel;charset=utf-8");// 設置contentType爲excel格式
			response.setHeader("Content-Disposition", "Attachment;Filename="+ fileName+".xls");
			workbook.write(outputStream);
            outputStream.close();
        } catch (IOException e) {
            workbook = null;
            return false;
        }
		return true;
	}
	
	private static void createSheet(HSSFWorkbook workbook, String fileName, int num){
		List<String> titles = getExcelTitle();
		List<Person> persons = getPersonList(num);
		SimpleDateFormat dateFormat=new SimpleDateFormat("yyyy-MM-dd");
		
		Sheet sheet = workbook.createSheet(fileName);
		//創建標題行
		int rowNumber=0;
		Row row = sheet.createRow(rowNumber++);
		for(int i=0; i<titles.size(); i++){
			Cell cell = row.createCell(i);
			cell.setCellStyle(createTitleStyles(workbook));
			cell.setCellValue(titles.get(i));
		}
		//創建正文內容
		for(Person person : persons){
			row = sheet.createRow(rowNumber);
			Cell cell1 = row.createCell(0);
			cell1.setCellValue(rowNumber++);
			cell1.setCellStyle(createCellStyles(workbook));
			Cell cell2 = row.createCell(1);
			cell2.setCellValue(person.getName());
			cell2.setCellStyle(createCellStyles(workbook));
			Cell cell3 = row.createCell(2);
			cell3.setCellValue(person.getAge());
			cell3.setCellStyle(createCellStyles(workbook));
			Cell cell4 = row.createCell(3);
			cell4.setCellValue(person.getSex());
			cell4.setCellStyle(createCellStyles(workbook));
			Cell cell5 = row.createCell(4);
			cell5.setCellValue(dateFormat.format(person.getBirthday()));
			cell5.setCellStyle(createCellStyles(workbook));
		}
		//自適應列寬
        for(int ii=0; ii<6; ii++){
    		sheet.autoSizeColumn(ii, true);
        } 
	}

    private static CellStyle createCellStyles(HSSFWorkbook wb) {
        Font cellStyleFont = wb.createFont();
        cellStyleFont.setFontHeightInPoints((short) 12);
        cellStyleFont.setColor(IndexedColors.BLACK.getIndex());
        cellStyleFont.setFontName("微軟雅黑");    
        
        CellStyle cellStyle = wb.createCellStyle();
		cellStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);
        cellStyle.setRightBorderColor(IndexedColors.BLACK.getIndex());
        cellStyle.setLeftBorderColor(IndexedColors.BLACK.getIndex());
        cellStyle.setTopBorderColor(IndexedColors.BLACK.getIndex());
        cellStyle.setBottomBorderColor(IndexedColors.BLACK.getIndex());
        cellStyle.setFont(cellStyleFont);

        return cellStyle;
    }

    private static CellStyle createTitleStyles(HSSFWorkbook wb) {
        Font cellStyleFont = wb.createFont();
        cellStyleFont.setFontHeightInPoints((short) 12);
        cellStyleFont.setColor(IndexedColors.BLACK.getIndex());
        cellStyleFont.setFontName("微軟雅黑");    
        
        CellStyle cellStyle = wb.createCellStyle();
		cellStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);
        cellStyle.setRightBorderColor(IndexedColors.BLACK.getIndex());
        cellStyle.setLeftBorderColor(IndexedColors.BLACK.getIndex());
        cellStyle.setTopBorderColor(IndexedColors.BLACK.getIndex());
        cellStyle.setBottomBorderColor(IndexedColors.BLACK.getIndex());
        cellStyle.setFont(cellStyleFont);
        HSSFPalette palette = wb.getCustomPalette();  //wb HSSFWorkbook對象
		palette.setColorAtIndex((short)9, (byte)(0x3e), (byte)(0x94), (byte)(0xe1));
		cellStyle.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
		cellStyle.setFillForegroundColor((short)9);

        return cellStyle;
    }
	
	private static String getFileName(){
		return "test_export";
	}
	
	private static List<String> getExcelTitle(){
		List<String> titleList = new ArrayList<>();
		titleList.add("序號");
		titleList.add("姓名");
		titleList.add("年齡");
		titleList.add("性別");
		titleList.add("出生日期");
		return titleList;
	}
	
	private static List<Person> getPersonList(int num){
		List<Person> list = new ArrayList<>();
		for(int i=0; i<num; i++){
			Person person = new Person("genox", 20, "男", new Date());
			list.add(person);
		}		
		return list;
	}
	
}