Requirements: Import execl to the database, modify if the data exists, add it if it does not exist
The main technical point is to try not to operate the database in the loop. First find out if the data in the database exists, modify it if it exists, and add it if it does not exist (designed to batch modification, very slow); here, delete operation is used, that is Delete the data in the database uniformly, and then directly add all the table data, but in this case the id will change, so it is only suitable for the id field without foreign keys.
1. Controller code
//1.文件上传
function upload(){
if(IS_POST){
$file = $_FILES;
foreach ($file as $k => $v) {
//生成唯一的ID
$filename = md5(uniqid(microtime(true),true));
if($file[$k]['error']==0){
$config=array(
'maxSize'=>70000000,
'exts'=>array('xls','xlsx'),
'rootPath'=>'Public/Uploads/',
//保存的文件名
'saveName' =>$filename,
//开启子目录
'subName' =>array('date','Ymd'),
);
$upload=new \Think\Upload($config);
// dump($upload);die;
$info=$upload->upload();
if($info){
//根目录
$rootPath=$config['rootPath'];
//文件保存路径
$savepath=$info[$k]['savepath'];
//文件名称
$savename=$info[$k]['savename'];
$fileUrl = $_SERVER['DOCUMENT_ROOT'].'/'.$rootPath.$savepath.$savename;
$data['msg']='文件上传成功';
$data['fileUrl']=$fileUrl;
$this->ajaxReturn($data);
}else{
$data['msg']=$upload->getError();
// dump($data);die;
$this->ajaxReturn($data);
}
}else{
$data['msg']='文件上传错误';
// dump($data);die;
$this->ajaxReturn($data);
}
}
}else{
$data['msg']='参数错误';
$this->ajaxReturn($data);
}
}
//2.整理execl导入的数据
function importDriver()
{
$fileUrl=I("post.file");
$filename=$fileUrl;
//导入PHPExcel类库，因为PHPExcel没有用命名空间，只能inport导入
vendor('PHPExcel.PHPExcel');
//创建PHPExcel对象，注意，不能少了
$PHPExcel = new \PHPExcel();
$exts=substr(strrchr($filename, '.'), 1);
//如果excel文件后缀名为.xls，导入这个类
if ($exts == 'xlsx') {
$objReader =\PHPExcel_IOFactory::createReader('Excel2007');
$objPHPExcel =$objReader->load($fileUrl, $encode = 'utf-8');
} else if ($exts == 'xls'){
$objReader =\PHPExcel_IOFactory::createReader('Excel5');
$objPHPExcel =$objReader->load($fileUrl, $encode = 'utf-8');
}
//获取表中的第一个工作表，如果要获取第二个，把0改为1，依次类推
$currentSheet = $objPHPExcel->getSheet(0);
//获取总列数
$allColumn = $currentSheet->getHighestColumn();
//获取总行数
$allRow = $currentSheet->getHighestRow();
//循环获取表中的数据，$currentRow表示当前行，从哪行开始读取数据，索引值从0开始
for ($currentRow = 1; $currentRow <= $allRow; $currentRow++) {
//从哪列开始，A表示第一列
for ($currentColumn = 'A'; $currentColumn <= $allColumn; $currentColumn++) {
//数据坐标
$address = $currentColumn . $currentRow;
//读取到的数据，保存到数组$data中
$cell = $currentSheet->getCell($address)->getValue();
if ($cell instanceof PHPExcel_RichText) {
$cell = $cell->__toString();
}
$data[$currentRow - 1][$currentColumn] = $cell;
// print_r($cell);
}
}
array_shift($data);
foreach ($data as $k=>$v){
$l[$k]['driver_id']=$v['A'];
$l[$k]['realname']=$v['B'];
$l[$k]['phone']=$v['C'];
$l[$k]['idnumber']=$v['D'];
}
// 写入数据库操作
return $this->insert_data($l,$filename);
}
//3.修改添加数据库
function insert_data($l,$url){
$l=$this->assoc_unique($l,"idnumber");//数据去重
$where['idnumber']=array('NEQ','');
$idnumberArr=M("driver_join")->field("idnumber")->where($where)->select();
foreach ($idnumberArr as $k=>$v){
$idnumberArrs[$k]=$v['idnumber'];
}
$info=array();
if(!empty($idnumberArrs)){
foreach ($l as $k=>$v){
if(in_array($v['idnumber'],$idnumberArrs)){
array_push($info,$v['idnumber']);
}
}
}
if(!empty($info)){
//删除已经有的
$wheres['idnumber']=array('IN',$info);
M("driver_join")->where($wheres)->delete();
}
M("driver_join")->addAll($l);
//删除上传的文件
unlink($url);
$this->ajaxReturn(['code'=>200,'msg'=>'导入成功']);
}
//4.二维数组去重
function assoc_unique($arr, $key) {
$tmp_arr = array();
foreach ($arr as $k => $v) {
if (in_array($v[$key], $tmp_arr)) {//搜索$v[$key]是否在$tmp_arr数组中存在，若存在返回true
unset($arr[$k]);
} else {
$tmp_arr[] = $v[$key];
}
}
sort($arr); //sort函数对数组进行排序
return $arr;
}2. Front-end code (using layui upload)
<button type="button" class="layui-btn" id="test3"><i class="layui-icon"></i>批量导入</button>
<script>
layui.use('upload', function() {
console.log('进来啦');
var upload = layui.upload;
upload.render({
elem: '#test3'
,url: '/Admin/Join/upload' //改成您自己的上传接口
,accept: 'file' //普通文件
,done: function(res){
// console.log(res);
$.post("/Admin/Join/importDriver",{'file':res.fileUrl},function (msg) {
console.log(msg);
if(msg.code=200){
layer.msg('上传成功');
//请求table数据
$.post(
'/index.php/Admin/Join/join_list_data',
function(res){
render_table(res.data.data);
render_page(res.data.page);
layer.close(loading)
}
);
}
},'json');
}
});
});
</script>3. Front-end code (native button)
<style>
.btnimport{display:inline-block;color:#fff; background-color: #1fb5ad;padding: 5px 10px; font-size: 12px; line-height: 1.5; border-radius: 3px; position: absolute;right: 200px;top: 182px;}
.btnimport input{position: absolute;opacity:0;filter:alpha(opacity=0);cursor:pointer;width: 50px;}
</style>
<div class="btnimport" id="imports">
<form action="upload" method="post" enctype="multipart/form-data" lay-filter="formDemos">
<input class="fileupload" type="file" id="fileExecl" name="importExcel" accept=".xlsx,.xls" >
</form>
<span>批量导入</span>
</div>
<script>
// 导入司机信息
$("#fileExecl").change(function () {
if ($("#fileExecl").val().length > 0) {
ajax_upload();
}
});
function ajax_upload()
{
var formData = new FormData();
formData.append('file', $('#fileExecl')[0].files[0]);
console.log(formData.get('file'));
$.ajax({
url: "upload",
type: "post",
data: formData,
processData: false,
contentType: false,
success: function (data) {
if(data.msg=="文件上传成功"){
$.post("importDriver",{'file':data.fileUrl},function (msg) {
if(msg.code=200){
alert(msg.msg)
}
},'json');
}
$('.tc_box').hide();
formData=null;
$("#fileExecl").val('');
},
error: function (e) {
formData=null;
alert("错误！！");
$("#fileExecl").val('');
}
})
}
</script>