java导出Excel表格

最近自己着手写了一个前后端分离的后台管理系统（主要是写着玩，java还是熟悉一点，所以前后端均是自己写），后端使用的Java SpringMVC。后来想着在用户管理中添加一个导出功能，所以就上网查了资料，实现了简单的导出功能，在这里记录下自己的过程。

1、在java项目中引入导出功能需要的jar包

　　poi-3.9.jar

　　poi-examples-3.9.jar

　　poi-excelant-3.9.jar

　　poi-ooxml-3.9.jar

　　poi-ooxml-schemas-3.9.jar

　　poi-scratchpad-3.9.jar

 

　　项目中使用的是maven结构，所以在pom.xml文件中添加如下部分：

　　

 

2、domain实体类-SysUser.java

 

3、controller层-SysUserController.java

package com.lin.controller;import java.io.BufferedInputStream;import java.io.BufferedOutputStream;import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.IOException;import java.io.InputStream;import java.text.SimpleDateFormat;import java.util.ArrayList;import java.util.Date;import java.util.HashMap;import java.util.List;import java.util.Map;import javax.annotation.Resource;import javax.servlet.ServletContext;import javax.servlet.ServletOutputStream;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.springframework.beans.factory.annotation.Value;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import org.springframework.web.bind.annotation.RequestParam;import org.springframework.web.bind.annotation.ResponseBody;import org.springframework.web.multipart.MultipartFile;import org.springframework.web.multipart.MultipartHttpServletRequest;import org.springframework.web.multipart.MultipartResolver;import org.springframework.web.multipart.commons.CommonsMultipartResolver;import com.lin.domain.data.ResData;import com.lin.domain.data.ResListData;import com.lin.domain.error.Error;import com.lin.domain.sysUser.SysUser;import com.lin.service.RoleService;import com.lin.service.SysUserService;import com.lin.utils.Aes;import com.lin.utils.DateTimeUtils;import com.lin.utils.ExcelUtil;import com.lin.utils.ResponseUtils;import com.lin.utils.Upload;import com.lin.utils.Utils;import com.sun.jersey.api.client.Client;import net.sf.json.JSONObject;/** * 后台用户-controller * @author libo */@Controller@RequestMapping("/sysUser")public class SysUserController {    @Resource    private SysUserService sysUserService;    @Resource    private RoleService rService;        @Value(value="${headImgPath}")    //后台图片保存地址    private String headImgPath;        @Value(value="${uploadHost}")    private String uploadHost;    //项目host路径            @Value(value="${sysUserDefImg}")    private String sysUserDefImg;    //系统用户默认头像/**     * 导出系统用户数据     * @param req     * @param res     * @param name     * @param phone     * @param email     * @param roleId     * @param createTimeStart     * @param createTimeEnd     * @param status     * @param departmentId     * @throws IOException     */    @ResponseBody    @RequestMapping(value="/exportSysUsers.do", method=RequestMethod.GET)    public void exportSysUsers(HttpServletRequest req,HttpServletResponse res,            String name, String phone, String email, Integer roleId, String createTimeStart, String createTimeEnd,             Integer status, Integer departmentId) throws IOException{        Map<String,Object> params = new HashMap<String,Object>();        params.put("name", "".equals(name) || null == name ? null : name);        params.put("phone", "".equals(phone) || null == phone ? null : phone);        params.put("email", "".equals(email) || null == email ? null : email);        params.put("roleId", "".equals(roleId) || null == roleId ? null : roleId);        params.put("createTimeStart", "".equals(createTimeStart) || null == createTimeStart ? null : createTimeStart+" 00:00:00");        params.put("createTimeEnd", "".equals(createTimeEnd) || null == createTimeEnd ? null : createTimeEnd+" 23:59:59");        params.put("status", "".equals(status) || null == status ? null : status);        params.put("departmentId", "".equals(departmentId) || null == departmentId ? null : departmentId);                Date d = new Date();        SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss");        String formatTime = sdf.format(d);        String fileName="系统用户表-"+formatTime;        //填充projects数据        List<SysUser> userList = sysUserService.getUserList(params);        List<Map<String,Object>> list=createExcelRecord(userList);        String columnNames[]={"姓名", "性别", "邮箱", "电话", "部门", "角色", "状态", "创建时间"};//列名        String keys[] = {"name", "gender", "email", "phone", "department", "role", "status", "createTime"};//map中的key        ByteArrayOutputStream os = new ByteArrayOutputStream();        try {            ExcelUtil.createWorkBook(list,keys,columnNames).write(os);        } catch (IOException e) {            e.printStackTrace();        }        byte[] content = os.toByteArray();        InputStream is = new ByteArrayInputStream(content);        // 设置response参数，可以打开www.cqben.com下载页面        res.reset();        res.setContentType("application/vnd.ms-excel;charset=utf-8");        res.setHeader("Content-Disposition", "attachment;filename="+ new String((fileName + ".xls").getBytes(), "iso-8859-1"));        ServletOutputStream out = res.getOutputStream();        BufferedInputStream bis = null;        BufferedOutputStream bos = null;        try {            bis = new BufferedInputStream(is);            bos = new BufferedOutputStream(out);            byte[] buff = new byte[2048];            int bytesRead;            // Simple read/write loop.            while (-1 != (bytesRead = bis.read(buff, 0, buff.length))) {                bos.write(buff, 0, bytesRead);            }        } catch (final IOException e) {            throw e;        } finally {            if (bis != null)                bis.close();            if (bos != null)                bos.close();        }    }        /**     * 生成Excel数据     * @param userList     * @return     */    private List<Map<String, Object>> createExcelRecord(List<SysUser> userList) {        List<Map<String, Object>> listmap = new ArrayList<Map<String, Object>>();        Map<String, Object> map = new HashMap<String, Object>();        map.put("sheetName", "sheet1");        listmap.add(map);        SysUser user = null;        for (int j = 0; j < userList.size(); j++) {            user = userList.get(j);            Map<String, Object> mapValue = new HashMap<String, Object>();            mapValue.put("name", user.getName());            mapValue.put("gender", (user.getGender()==1) ? "男":((user.getGender()==0) ? "女" : "保密"));            mapValue.put("email", user.getEmail());            mapValue.put("phone", user.getPhone());            mapValue.put("department", user.getDepartment().getName());            mapValue.put("role", user.getRole().getName());            mapValue.put("status", user.getStatus()==1 ? "启用" : "禁用");            mapValue.put("createTime", user.getCreateTime().substring(0, 19));            listmap.add(mapValue);        }        return listmap;    }        }

 

4、前端部分

　　　　　/**         * 点击导出按钮，导出用户数据         */        $scope.exportData = function () {            //请求接口的参数            var name = $scope.nameSearch || '',                 //姓名                phone = $scope.phoneSearch || '',              //电话                email = $scope.emailSearch || '',              //邮箱                roleId = $scope.roleIdSearch || '',            //角色id                departmentId = $scope.departmentIdSearch || '', //部门id                createTimeStart = $('#createTimeRange').val() ? $('#createTimeRange').val().substring(0,10)+' 00:00:00' : '',  //创建时间（起始时间）                createTimeEnd = $('#createTimeRange').val() ? $('#createTimeRange').val().substring(13,23)+' 23:59:59' : '',   //创建时间（截止时间）                status = $scope.statusSearch || '';             //状态（1=正常，0=禁用）            var url = apiServ.sysUser.exportSysUsers.url+'?name='+name+'&phone='+phone+'&email='+email+'&roleId='+roleId+'&departmentId='+departmentId+                '&createTimeStart='+createTimeStart+'&createTimeEnd='+createTimeEnd+'&status='+status;            window.open(url);        }

 

5、效果-导出的文件