springmvc + mybatis + poi导出Excel实例

1、前端js代码：

$("#fileExportAll").click(function(){
    
    
        var start = $("#startDate").val();
        var end = $("#endDate").val();
        window.location.href=CONTEXTPATH + "/test.do?method=exporDate&startDate=" + start + "&endDate=" + end;
    })

2、dao中的代码：

    @Override
    public void exportMerHistoryStatistics(Map model,HttpServletResponse response){
        List list = getSqlMapClientTemplate().queryForList("testPQ", model);
        ExportExcel e = new ExportExcel();
        String headers[][] = {
   
   {
   
   "NAME","名称"},{
   
   "ACCOUNT","账号"},{
   
   "TRANAMT","金额"},{
   
   "REPORTDATE","统计日期"}};
        e.exportExcel("测试", headers, list, response);

    }

3、通用导出工具(适合mybatis)

import java.io.IOException;
import java.io.OutputStream;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

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.HSSFFont;
import org.apache.poi.hssf.usermodel.HSSFRichTextString;
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;

@SuppressWarnings("all")
public class ExportExcel {

    /**
     * 将数据以EXCEL 的形式输出到指定IO设备上
     * 
     * @param title
     *            表格标题名
     * @param headers
     *            表格属性列名二维数组{英文列名，中文列头}
     * @param dataset
     *            List<Map>集合数据
     * @param out
     *            与输出设备关联的流对象，可以将EXCEL文档导出到本地或者网络中
     */
    @SuppressWarnings("unchecked")
    public void exportExcel(String title, String[][] headers,
            List<Map<String, Object>> dataset, HttpServletResponse response) {
        HSSFWorkbook workbook = new HSSFWorkbook();
        HSSFSheet sheet = workbook.createSheet(title);
        sheet.setDefaultColumnWidth(15);
        HSSFCellStyle style = workbook.createCellStyle();
        style.setFillForegroundColor(HSSFColor.WHITE.index);
        style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
        style.setBorderBottom(HSSFCellStyle.BORDER_NONE);
        style.setBorderLeft(HSSFCellStyle.BORDER_NONE);
        style.setBorderRight(HSSFCellStyle.BORDER_NONE);
        style.setBorderTop(HSSFCellStyle.BORDER_NONE);
        style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
        HSSFFont font = workbook.createFont();
        //font.setColor(HSSFColor.VIOLET.index);
        font.setFontHeightInPoints((short) 12);
        font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
        style.setFont(font);
        HSSFCellStyle style2 = workbook.createCellStyle();
        //style2.setFillForegroundColor(HSSFColor.LIGHT_YELLOW.index);
        style2.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
        style2.setBorderBottom(HSSFCellStyle.BORDER_THIN);
        style2.setBorderLeft(HSSFCellStyle.BORDER_THIN);
        style2.setBorderRight(HSSFCellStyle.BORDER_THIN);
        style2.setBorderTop(HSSFCellStyle.BORDER_THIN);
        style2.setAlignment(HSSFCellStyle.ALIGN_CENTER);
        style2.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
        HSSFFont font2 = workbook.createFont();
        font2.setBoldweight(HSSFFont.BOLDWEIGHT_NORMAL);
        style2.setFont(font2);
        HSSFRow row = sheet.createRow(0);
        for (int i = 0; i < headers.length; i++) {
    
    
            HSSFCell cell = row.createCell(i);
            cell.setCellStyle(style);
            HSSFRichTextString text = new HSSFRichTextString(headers[i][1]);
            cell.setCellValue(text);
        }

        String textValue = null;
        if(null != dataset){
            Map<String, Object> map = new HashMap<String, Object>();
            for(int i=0; i<dataset.size(); i++){
    
    
                map = dataset.get(i);
                int index = 0;
                row = sheet.createRow(i + 1);
                for(int j=0; j<headers.length; j++){
    
    
                    textValue = map.get(headers[j][0]).toString();
                    if(null != textValue){
                        HSSFCell cell = row.createCell(index++);
                        HSSFRichTextString richString = new HSSFRichTextString( textValue);
                        HSSFFont font3 = workbook.createFont();
                        //font3.setColor(HSSFColor.BLUE.index);
                        richString.applyFont(font3);
                        cell.setCellValue(richString);
                    }
                }
            }
        }

        try {
            response.reset();
            response.setContentType("application/vnd..ms-excel");
            response.setHeader("content-Disposition","attachment;filename="+URLEncoder.encode(title + ".xls","utf-8"));
            OutputStream out = response.getOutputStream();
            workbook.write(out);
            out.flush();
        } catch (IOException e) {
            e.printStackTrace();
        } 

    }

}