poi导出Excel直接在浏览器下载

需求：导出成Excel格式，要在浏览器看到类似于下载的效果。

导出的Excel和下载在同一个目录下。

xxController.java

// 导出
@RequestMapping(value = "/createExcelToDisk", method = RequestMethod.GET, produces = "application/json;charset=utf-8")
public @ResponseBody String createExcelToDisk(HttpServletResponse response,List<Object>valueList,) throws IOException, IllegalAccessException, ClassNotFoundException {
        response.reset(); // 清除buffer缓存
        // 指定下载的文件名
        response.setHeader("Content-Disposition", "attachment;filename=contacts" + CurrentTime.getDateTime() + ".xlsx");
        response.setContentType("application/vnd.ms-excel;charset=UTF-8");
        response.setHeader("Pragma", "no-cache");
        response.setHeader("Cache-Control", "no-cache");
        response.setDateHeader("Expires", 0);
        XSSFWorkbook workbook = null;
        try {
            workbook = ExcelUtils.exportContacts(valueList);
            OutputStream output;
            try {
                output = response.getOutputStream();
                BufferedOutputStream bufferedOutPut = new BufferedOutputStream(output);
                bufferedOutPut.flush();
                workbook.write(bufferedOutPut);
                bufferedOutPut.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        } catch (Exception e1) {
            e1.printStackTrace();
        }
        return null;
    }

ExcelUtils.java 

package com.ky.lm.util.common;

import java.util.List;

import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

public class ExcelUtils {

    public static XSSFWorkbook exportContacts(List<Object> valueList)
            throws IllegalArgumentException, IllegalAccessException, ClassNotFoundException {
        XSSFWorkbook xssfWorkbook = null;
        String sheetName = "客户列表";
        xssfWorkbook = createExcelFile(valueList, sheetName);
        return xssfWorkbook;
    }

    public static XSSFWorkbook createExcelFile(List<Object> valueList, String sheetName)
            throws IllegalArgumentException, IllegalAccessException, ClassNotFoundException {
        // 创建新的Excel工作簿
        XSSFWorkbook workbook = new XSSFWorkbook();
        // 在Excel工作簿中建一工作表，其名为缺省值, 也可以指定Sheet名称
        XSSFSheet sheet = workbook.createSheet(sheetName);
        XSSFRow row = sheet.createRow(0);
        XSSFCell cell = row.createCell(0);
        cell.setCellValue("姓名");
        cell = row.createCell(1);
        cell.setCellValue("年龄");
        for (int i = 0; i < valueList.size(); i++) {
            row = sheet.createRow((int) i + 1);
                        row.createCell(i).setCellValue(valueList[i]);
        }
        return workbook;
    }

}

效果

这里补充一个要点：导出直接在浏览器下载这样的格式    ！！不支持ajax！！  最好用a标签来写。

有什么不明白的可以在评论里提问哦 ^ - ^ !