jxl实现excel导入导出的完整demo

@RequestMapping("/pointsImport.do")
public void StructureImport(HttpServletRequest request, HttpServletResponse response, Long driveId) {
    String msg = null;
    try {
        response.setContentType("text/html;charset=utf-8");
        MultipartHttpServletRequest re = (MultipartHttpServletRequest) request;
        MultipartFile fileM = re.getFile("upFile");
        CommonsMultipartFile cf = (CommonsMultipartFile) fileM;
        InputStream inputStream = cf.getInputStream();

        if (inputStream != null) {
            Workbook workbook = null;
            try {
                workbook = Workbook.getWorkbook(inputStream);
                processData(workbook, response, driveId);
            } catch (Exception e) {
                logger.error("上传文件错误:" + e);
            }
        }
    } catch (Exception e) {
        logger.error("上传文件错误:" + e);
    }

}

---

也可以用path来获取文件，可path大多时候，获取的是相对路径，具体为什么我也不清楚…..

            response.setContentType("text/html;charset=utf-8");
            MultipartHttpServletRequest re = (MultipartHttpServletRequest) request;
            CommonsMultipartFile file = (CommonsMultipartFile) re.getFile("upFile");
            DiskFileItem dfi = (DiskFileItem) file.getFileItem();
            String path = dfi.getStoreLocation().getPath().toString();
            File toFile = new File(path);

            if (toFile != null) {

                //file.transferTo(toFile);
                Workbook workbook = null;
                try {
                    // excel文件上传
                    workbook = Workbook.getWorkbook(toFile);
                    //处理数据，如果需要userid的话，这里可以追加
                    processData(workbook, response);
                } catch (Exception e) {
                    msg = "上传文件错误!";
                }
            }
        } catch (Exception e) {
            msg = "上传文件错误!";
        }

上传控件：

<form id="edit_form" action="<%=basePath%>tpManagerDownLoad/pointsImport.do" method="post" class="data-form" enctype="multipart/form-data">
    <input type="hidden" name="deviceStoreId" value="${deviceStoreId }" />
    <input type="hidden" name="id" value="${driveId}" />
    <input type="hidden" id="document" name="document" value="${document }" />
    <table width="100%">
        <tbody>
        <tr>
            <td class="field-lable"><label>驱动文件：label>td>
            <td><input type="file" title="请选择文件" id="upFile"  name="upFile" onselect="getFileName()" onchange="getFileName()"/>td>
        tr>
        tbody>
    table>
    <table class="btn-ct">
        <tbody><tr>
            <td>
                <button type="submit" id="save">确定button>
            td>
        tr>
        tbody>table>
    div>
form>

---

也可以这么写：

               <div class="panel-top-banner">
                        <form action="StructureExIm/StructureImport.do" id="form" method="post" enctype="multipart/form-data">
                            上传:
                            <input id="upFile" name="upFile" type="file" />
                            <input type="submit" value="提交"/>
                            <br/>
                        form>
                div>

所有上传和下载的代码demo：

package com.tdenergys.platform.web.controller;

import com.tdenergys.platform.core.model.Project;
import com.tdenergys.platform.core.model.Structure;
import com.tdenergys.platform.core.service.IProjectService;
import com.tdenergys.platform.core.service.IStructureService;
import jxl.*;
import jxl.format.Colour;
import jxl.format.UnderlineStyle;
import jxl.write.*;
import jxl.write.biff.RowsExceededException;
import org.apache.commons.fileupload.disk.DiskFileItem;
import org.apache.commons.lang.StringUtils;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.multipart.MultipartHttpServletRequest;
import org.springframework.web.multipart.commons.CommonsMultipartFile;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.lang.Boolean;
import java.util.*;
import java.util.regex.Matcher;

/**
* 结构导入
* Created by Jerry.ZR on 15-3-4.
*/
@Controller
@RequestMapping("/StructureExIm")
public class StructureExImController {

    @Resource(name = "structureService")
    private IStructureService structureService;

    @Resource(name = "projectService")
    private IProjectService projectService;


    private static final String IMPORT_TEMP_FILE_NAME = "Structure_import_temp.xls";

    private static final String[] STORE_HOUSE_IMPORT_TEMP_FILE_TITLE =
            {"项目名称", "父亲名称", "结构名称", "结构编号"};

    private static final String[] STORE_HOUSE_IMPORT_TEMP_FILE_TITLE_ID =
            {"project_id", "parent_id", "name", "code"};

    public static final String STORE_HOUSE_FAIL = "失败";

    public static final String STORE_HOUSE_SUCCESS = "成功";

    private static final String IMPORT_TEMP_RESULT_NAME = "Structure_import_result";

    //数据字典页的表头
    private static final String[] STORE_HOUSE_DICTIONARY_TITLE = {"项目名称"};
    //与数据字典表头对应的id号
    private static final String STORE_HOUSE_DICTIONARY_ID = "projectName";

    /**
     * 设备导入 模版下载
     *
     * @param request
     * @param response
     * @return
     */
    @RequestMapping("/StructureDownload.do")
    public void StructureDownload(HttpServletRequest request, HttpServletResponse response) {
        response.setCharacterEncoding("utf-8");
        response.setContentType("aplication/msexcel;charset=utf-8"); // 设置文件类型
        response.setHeader("Content-disposition", "attachment; filename=" + IMPORT_TEMP_FILE_NAME);

        WritableWorkbook workbook = null;
        String[] titles = STORE_HOUSE_IMPORT_TEMP_FILE_TITLE;
        String[] titleIds = STORE_HOUSE_IMPORT_TEMP_FILE_TITLE_ID;

        try {
            // 创建工作簿
            workbook = Workbook.createWorkbook(response.getOutputStream());
            // 创建导入数据页
            WritableSheet sheet0 = workbook.createSheet("导入数据", 0);

            CellView cellView = new CellView();
            // 设置自动大小
            cellView.setAutosize(true);
            // 设置字体 普通格式
            WritableFont font = new WritableFont(WritableFont.ARIAL, 10);
            WritableCellFormat cellFormat = new WritableCellFormat(font);
            // 设置背景颜色;
            cellFormat.setBackground(Colour.YELLOW);

            // 设置必填字段为红色字体 特殊字体
            WritableFont fontRed = new WritableFont(WritableFont.ARIAL, 10, WritableFont.NO_BOLD, false, UnderlineStyle.NO_UNDERLINE, Colour.RED);
            WritableCellFormat cellFormatRed = new WritableCellFormat(fontRed);
            // 设置背景色为黄色
            cellFormatRed.setBackground(Colour.YELLOW);

            // 定义单元格为文本样式
            WritableCellFormat wcf = new WritableCellFormat(NumberFormats.TEXT);
            // 定义一个列显示样式
            CellView cv = new CellView();
            // 把定义的单元格格式初始化进去
            cv.setFormat(wcf);
            // 设置列宽度（不设置的话是0，不会显示）
            cv.setSize(10 * 265);

            //excel写上注释
            WritableCellFeatures projectNameWCF = new WritableCellFeatures();
            projectNameWCF.setComment("项目名称不能为空");

            WritableCellFeatures structureNameWCF = new WritableCellFeatures();
            structureNameWCF.setComment("结构名称不能为空");


            if (titles != null) {

                for (int i = 0; i < titles.length; i++) {
                    // 将所有列设置为文本格式，且宽度为10 * 265
                    sheet0.setColumnView(i, cv);

                    String title = titles[i];
                    String titleId = titleIds[i];
                    if (StringUtils.isNotBlank(title)) {
                        // 列名
                        Label label = null;
                        // 设置必填字段为红色字体
                        if (i == 0 || i == 2) {
                            // Label(列,行,标题)
                            label = new Label(i, 0, titles[i], cellFormatRed);
                        } else {
                            label = new Label(i, 0, titles[i], cellFormat);
                        }
                        //编写excel注释
                        if ("project_id".equals(titleId)) {
                            label.setCellFeatures(projectNameWCF);
                        }
                        if ("name".equals(titleId)) {
                            label.setCellFeatures(structureNameWCF);
                        }
                        sheet0.addCell(label);
                    }
                }
            }

            // 创建数据辞典页
            WritableSheet sheet1 = workbook.createSheet("数据辞典", 1);

            Map result2 = new HashMap();

            Project p = new Project();
            List list = projectService.selectEntitys(p);
            result2.put("projectName", list);

            List