Java POI 超简洁的导出excel到指定路径 以及复制导出路径下的所有文件的excel到指定路径
Java POI 超简洁的导出excel到指定路径 以及复制导出路径下的所有文件的excel到指定路径
package com.qiya.springboot.controller;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
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.HSSFDataFormat;
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.ss.usermodel.BorderStyle;
import org.apache.poi.ss.usermodel.FillPatternType;
import org.apache.poi.ss.usermodel.HorizontalAlignment;
import org.apache.poi.ss.usermodel.IndexedColors;
import org.apache.poi.ss.usermodel.VerticalAlignment;
import org.apache.poi.ss.util.CellRangeAddress;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class ExportController {
// 下载文件的存放路径
private static final String rootFilePath = "F:/exportByJava/";
@Autowired
private JdbcTemplate jdbcTemplate;
/**
* @return expResult
* "/" == "\\"
*
*/
@RequestMapping("/exportUsers")
public boolean exportUsers(HttpServletRequest request, HttpServletResponse response) {
boolean expResult = false;
try {
HSSFWorkbook workbook = new HSSFWorkbook();
HSSFSheet sheet1 = workbook.createSheet("sheet1");
List<Map<String, Object>> usersList = jdbcTemplate
.queryForList("SELECT u.id,u.userName,u.userAge,u.userAddress FROM user u");
// 设置列宽
sheet1.setColumnWidth(0, 30*256);
// 合并单元格 参数说明：1：开始行 2：结束行 3：开始列 4：结束列
sheet1.addMergedRegion(new CellRangeAddress(0,0,0,3));
String[] headers = {"ID", "用户名", "年龄", "地址"};
HSSFCellStyle style = workbook.createCellStyle();
style.setDataFormat(HSSFDataFormat.getBuiltinFormat("m/d/yy h:mm:ss"));
HSSFFont font = workbook.createFont();
font.setBold(true);
style.setFont(font);
style.setAlignment(HorizontalAlignment.CENTER);
style.setVerticalAlignment(VerticalAlignment.CENTER);
// 下两行共同构成了背景色
style.setFillForegroundColor(IndexedColors.GREY_25_PERCENT.getIndex());
style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
style.setBorderTop(BorderStyle.THIN);
// 第一行
HSSFRow row0 = sheet1.createRow(0);
HSSFCell row0cell0 = row0.createCell(0);
HSSFRichTextString text = new HSSFRichTextString("用户表");
row0cell0.setCellValue(text);
row0cell0.setCellStyle(style);
// 第二行
HSSFRow row1 = sheet1.createRow(1);
for(int i=0;i<headers.length;i++){
HSSFCell cell = row1.createCell(i);
HSSFRichTextString text2 = new HSSFRichTextString(headers[i]);
cell.setCellValue(text2);
cell.setCellStyle(style);
}
// 第三行及以后
int rowNum = 2;
for(Map<String, Object> uMap : usersList){
int rowNumCellN = 0;
HSSFRow rowRowNum = sheet1.createRow(rowNum);
for(String uMapKey : uMap.keySet()) {
for(;rowNumCellN < uMap.size();) {
rowRowNum.createCell(rowNumCellN).setCellValue(String.valueOf(uMap.get(uMapKey)));
rowNumCellN++;
break;
}
}
rowNum++;
}
SimpleDateFormat format = new SimpleDateFormat("yyyyMMddHHmmss");
SimpleDateFormat formatToday = new SimpleDateFormat("yyyyMMdd");
String date = format.format(new Date());
String fileName = date+"_用户表.xls";
isDirExist(rootFilePath+formatToday.format(new Date()));
FileOutputStream outputStream = new FileOutputStream(rootFilePath+formatToday.format(new Date())+"/"+fileName);
workbook.write(outputStream); // 写入磁盘
outputStream.close();
workbook.close();
expResult = true;
} catch (Exception e) {
expResult = false;
e.printStackTrace();
}
return expResult;
}
/**
* @return 针对window.locatin.hef访问导出方法无法接收导出结果，
* 此方法用来调用exportUsers以显示导出结果，前台以ajax调用此方法
* */
@PostMapping("/showExpRes")
public Map<String, Object> showExpRes(HttpServletRequest request,HttpServletResponse response) {
boolean res = exportUsers(request, response);
Map<String, Object> map = new HashMap<>();
map.put("res", res);
return map;
}
/**
* @return map
* */
@PostMapping("/mvFile")
public Map<String, Object> mvFile(HttpServletRequest request) {
// windows中是反斜杠，java中是正斜杠
// 最好不要用get方式传带路径的参数，避免很多错误
String fileDir = request.getParameter("fileDir");
System.out.println(fileDir);
Map<String, Object> resMap = new HashMap<>();
SimpleDateFormat formatToday = new SimpleDateFormat("yyyyMMdd");
// 待移动的文件夹
File file = new File(rootFilePath+formatToday.format(new Date()));
File[] fileArr = file.listFiles();
if(fileArr == null) {
return null;
}
try {
for(File mvfile: fileArr) {
FileInputStream in = new FileInputStream(mvfile);
FileOutputStream out = new FileOutputStream(new File(fileDir+"/"+mvfile.getName()));
byte[] buff = new byte[1024]; // 1kb = 1024Byte
System.out.println("移动的文件："+fileDir+"/"+mvfile.getName());
int n = 0;
while((n = in.read(buff)) != -1) {
out.write(buff, 0, n);
}
out.flush();
in.close();
out.close();
}
resMap.put("success", "true");
} catch (Exception e) {
resMap.put("success", "false");
e.printStackTrace();
}
return resMap;
}
/**
* @param 当前文件夹路径
* */
public void isDirExist(String fileDir) {
File file = new File(fileDir);
if(!file.exists()) {
file.mkdir();
}
}
}
html只用看导出部分就行。。。
<html>
<head>
<meta charset="UTF-8">
<link rel="stylesheet" type="text/css" href="css/bootstrap.min.css">
<link rel="stylesheet" type="text/css" href="css/bootstrap-table.min.css">
<!-- jQuery文件。务必在bootstrap.min.js 之前引入 -->
<script type="text/javascript" src="js/jquery-3.1.1.min.js"></script>
<!-- popper.min.js 用于弹窗、提示、下拉菜单 -->
<script type="text/javascript" src="js/bootstrap.min.js"></script>
<script type="text/javascript" src="js/bootstrap-table.js"></script>
<script type="text/javascript" src="js/bootstrap-table-zh-CN.min.js"></script>
</head>
<body>
<div class="container">
<!-- 信息框 -->
<div class="form-group">
<button class="btn btn-success" id="heroInfo"
title="详细信息" data-content="女 23岁" data-placement="bottom">霞</button>
</div><!-- 结束信息框 -->
<div id="toolbar" class="btn-group">
<button id="btn_add" type="button" class="btn btn-default" onclick="openAddModel()" >
<span class="glyphicon glyphicon-plus" aria-hidden="true"></span>新增
</button>
<button id="btn_edit" type="button" class="btn btn-default" onclick='updateUser()'>
<span class="glyphicon glyphicon-pencil" aria-hidden="true"></span>修改
</button>
<button id="btn_delete" type="button" class="btn btn-default" onclick='delUser()'>
<span class="glyphicon glyphicon-remove" aria-hidden="true"></span>删除
</button>
<button type="button" class="btn btn-default" onclick="exportUsers()">
<span class="glyphicon glyphicon-export" aria-hidden="true"></span>导出
</button>
</div>
<div style="float:right;margin-top: 10px;">
<span><input type="text" id="unameCon" placeholder="请输入用户名进行查找（输入全名搜索速度更快哦！）"
style="width:300px; height: 34px;font-size: 12px;vertical-align:middle;border-radius: 4px;border: solid 1px #D0CDC7;" />
</span>
<button id="btn_search" type="button" class="btn btn-default" style="margin-left:0px" onclick="searchByCon()">
<span class="glyphicon glyphicon-search" aria-hidden="true"></span>搜索
</button>
<button id="btn_reset" type="button" class="btn btn-default">
<span class="glyphicon glyphicon-refresh" aria-hidden="true"></span>重置
</button>
</div>
<table id="allUsers"></table>
<!-- 修改单个用户模态框 -->
<div class="modal fade" id="openUserInfoModal" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
<h4 class="modal-title" id="myModalLabel">用户信息</h4>
</div>
<div class="modal-body">
<div class='table table-condensed'>
<div style="display:none;"><input type="text" name="id" id="uid" /></div>
<div class="form-group">用户名：<input type="text" name="name" id="unameModal" /></div>
<div class="form-group" id="unaemErrorMsgModal"></div>
<div class="form-group">年 龄：<input type="number" name="age" id="uageModal" /></div>
<div class="form-group" id="uageErrorMsgModal"></div>
<div class="form-group">地 址：<input type="text" name="address" id="uaddressModal" /></div>
<div class="form-group" id="uaddressErrorMsgModal"></div>
</div>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" onclick="saveInfo()">保存</button>
<button type="button" class="btn btn-default" data-dismiss="modal">关闭</button>
</div>
</div>
</div>
</div> <!-- 结束单个用户信息框修改 -->
</div>
<div>
<button class="btn btn-info" onclick="mvFile()">移动excel到指定目录</button>
<input type = "text" id="filePath" style="width:300px; height: 34px;font-size: 12px;vertical-align:middle;border-radius: 4px;border: solid 1px #D0CDC7;" placeholder = "请填写存放路径"/>
<div id="showUserByPermission" style="width: 500px; margin-left: 100px;"></div>
</div>
<script>
$(function () {
doSearch();
$("#heroInfo").popover({
trigger: 'focus'
});
});
function delUser(){
// 获取curPage=>redis
var page = $("#allUsers").bootstrapTable("getPage");
var users = $("#allUsers").bootstrapTable('getSelections');
if(users.length==0){
alert("请选择要删除的行！");
return;
}
var ids = "";
for(var i=0;i<users.length;i++){
if(i==users.length-1){
ids += users[i].id;
}else{
ids += users[i].id+"#";
}
}
$.ajax({
url:"/nianyu/user/delUser?curPage="+page.pageNumber,
type:"post",
dataType:"json",
data:{
"ids":ids
},
success:function(data){
var delFailCount = data.delFailCount;
var delSuccessCount= data.delSuccessCount;
var n = delSuccessCount-delFailCount;
if(delSuccessCount>0){
alert("删除成功！"+"删除成功"+delSuccessCount+"条！"+"删除失败"+delFailCount+"条！");
$("#allUsers").bootstrapTable('refresh');
}else{
alert("删除失败！"+"删除成功"+delSuccessCount+"条！"+"删除失败"+delFailCount+"条！");
$("#allUsers").bootstrapTable('refresh');
}
}
});
}
function updateUser(){
var users = $("#allUsers").bootstrapTable('getSelections');
if(users.length==0){
alert("请选择要修改的行！");
return;
}else if(users.length>1){
alert("不能一次修改多行！");
return;
}else{
$('#openUserInfoModal').modal("show");
// 判断是否进入修改的参数，很重要，困扰了两个多小时
istate = 0;
$.ajax({
url:"/nianyu/user/queryUserInfo?id="+users[0].id,
type:"post",
dataType:"json",
success:function(data){
var user = data.res;
$('#uid').val(user.id);
$('#unameModal').val(user.userName);
$('#uageModal').val(user.userAge);
$('#uaddressModal').val(user.userAddress);
}
});
}
}
function openAddModel(){
// 判断是否进入新增的参数，很重要，困扰了两个多小时
istate = 1;
$('#unameModal').val("");
$('#uageModal').val("");
$('#uaddressModal').val("");
$('#openUserInfoModal').modal("show");
}
function saveInfo(){
// 获取curPage=>redis
var page = $("#allUsers").bootstrapTable("getPage");
$("#unaemErrorMsgModal").empty();
$("#uageErrorMsgModal").empty();
$("#uaddressErrorMsgModal").empty();
var uid = $('#uid').val();
var unameModal = $('#unameModal').val();
var uageModal = $('#uageModal').val();
var uaddressModal = $('#uaddressModal').val();
if(!unameModal){
str = "错误！用户名不能为空！";
$("#unaemErrorMsgModal").append(str);
return;
}else if(!uageModal){
str = "错误！年龄不能为空！";
$("#uageErrorMsgModal").append(str);
return;
}else if(!uaddressModal){
str = "错误！地址不能为空！";
$("#uaddressErrorMsgModal").append(str);
return;
}
if(istate==1){
$.ajax({
url:"/nianyu/user/addUser?curPage="+page.pageNumber,
type:"post",
dataType:"json",
data:{
"userName":unameModal,
"userAge":uageModal,
"userAddress":uaddressModal
},
success:function(data){
$("#allUsers").bootstrapTable('refresh');
$('#openUserInfoModal').modal('hide');
if("success"==data.res){
alert("保存成功！");
}else{
alert("保存失败！")
}
}
});
}else{
$.ajax({
url:"/nianyu/user/updateUserInfo?curPage="+page.pageNumber,
type:"post",
dataType:"json",
data:{
"id":uid,
"userName":unameModal,
"userAge":uageModal,
"userAddress":uaddressModal
},
success:function(data){
$('#uid').val('');
$("#allUsers").bootstrapTable('refresh');
$('#openUserInfoModal').modal('hide');
if("success"==data.res){
alert("修改成功！");
}else{
alert("修改失败！")
}
}
});
}
}
// javascript加载bootstraptable
function doSearch(){
$("#allUsers").bootstrapTable({ // 对应table标签的id
url: "/nianyu/user/queryUserInfoByPageRedis", // 获取表格数据的url
method: 'get', //请求方式（*）
toolbar: '#toolbar', //工具按钮用哪个容器
striped: true, //是否显示行间隔色
cache: false, //是否使用缓存，默认为true，所以一般情况下需要设置一下这个属性（*）
pagination: true, //是否显示分页（*）
sortable: false, //是否启用排序
sortOrder: "asc", //排序方式
sidePagination: "server", //分页方式：client客户端分页，server服务端分页（*）
pageNumber:1, //初始化加载第一页，默认第一页
pageSize: 10, //每页的记录行数（*）
pageList: [10], //可供选择的每页的行数（*）
search: false, //是否显示表格搜索，此搜索是客户端搜索，不会进服务端，所以，个人感觉意义不大
strictSearch: false,
showColumns: false, //是否显示所有的列
showRefresh: false, //是否显示刷新按钮
minimumCountColumns: 2, //最少允许的列数
clickToSelect: true, //是否启用点击选中行
height: 543, //行高，如果没有设置height属性，表格自动根据记录条数觉得表格高度
uniqueId: "ID", //每一行的唯一标识，一般为主键列
showToggle:false, //是否显示详细视图和列表视图的切换按钮
cardView: false, //是否显示详细视图
detailView: false, //是否显示父子表
queryParams: function (params) {
return {
pageSize: params.limit, // 每页要显示的数据条数
offset: params.offset, // 每页显示数据的开始行号
sort: params.sort, // 要排序的字段
sortOrder: params.order, // 排序规则
userName:$("#unameCon").val(),
}
},
columns: [
{
checkbox: true, // 显示一个勾选框
align: 'center' // 居中显示
}, {
field: 'number',
title: '序号',
align: 'center',
valign: 'middle',
formatter: function(value, row, index){
// 在bootstrap-table.js 中增加getPage(),
var page = $("#allUsers").bootstrapTable("getPage");
return page.pageSize * (page.pageNumber - 1) + index + 1;
}
}, {
field: 'id',
title: 'ID', // 表格表头显示文字
align: 'center', // 左右居中
valign: 'middle' // 上下居中
}, {
field: 'userName', // 返回json数据中的name
title: '用户名', // 表格表头显示文字
align: 'center', // 左右居中
valign: 'middle' // 上下居中
}, {
field: 'userAge',
title: '年龄',
align: 'center',
valign: 'middle'
}, {
field: 'userAddress',
title: '地址',
align: 'center',
valign: 'middle'
}/* {
title: "操作",
align: 'center',
valign: 'middle',
width: 160, // 定义列的宽度，单位为像素px
formatter: function (value, row, index) {
return '';
}
} */
],
onLoadSuccess: function(){ //加载成功时执行
console.info("加载成功");
},
onLoadError: function(){ //加载失败时执行
console.info("加载数据失败");
}
})
}
function exportUsers(){
// window.location.href = "/nianyu/exportUsers";
$.ajax({
url:"/nianyu/showExpRes",
type:"post",
dataType:"json",
success:function(data){
if(data.res) {
alert("导出成功！");
}else {
alert("导出失败!");
}
}
});
}
function searchByCon(){
if($('#unameCon').val().length > 0 ){
$("#btn_edit").attr('disabled',true);
$('#btn_delete').attr('disabled',true);
$("#allUsers").bootstrapTable('refresh');
}else{
$("#btn_edit").attr('disabled',false);
$('#btn_delete').attr('disabled',false);
$("#allUsers").bootstrapTable('refresh');
}
}
function mvFile() {
var fileDir = $("#filePath").val();
$.ajax({
url: "/nianyu/mvFile",
type:"post",
dataType:"json",
data:{
"fileDir":fileDir
},
success:function(data){
if("true" == data.success) {
alert("移动成功！");
}else {
alert("移动失败！");
}
}
})
}
</script>
</body>
</html>