piter

DownloadAction.php

@@ -0,0 +1,70 @@
+<?php
+/**
+ * User: Scott_Huang
+ * Date: 6/16/2015
+ * Time: 5:48 PM
+ */
+
+namespace  ptrnov\postman4excel;
+
+use Yii;
+use yii\base\Action;
+class DownloadAction extends Action
+{
+    public function run($file_name, $file_type = 'excel', $deleteAfterDownload = true) {
+        if (empty($file_name)) {
+//            return $this->goBack();
+            return 0;
+        }
+		$baseRoot=Yii::getAlias('@vendor').'/ptrnov/yii2-postman4excel/tmp';
+		//$baseRoot=dirname(dirname(__DIR__)).'/cronjob/';
+        //$baseRoot = Yii::getAlias('@webroot') . "/uploads/";
+        $file_name = $baseRoot . $file_name;
+        //echo $file_name,"<BR/>";
+        if (!file_exists($file_name)) {
+            //HzlUtil::setMsg("Error", "File not exist");
+            return 0;
+        }
+        $fp = fopen($file_name, "r");
+        $file_size = filesize($file_name);
+//下载文件需要用到的头
+        if ($file_type == 'excel') {
+            header('Pragma: public');
+            header('Expires: 0');
+            header('Content-Encoding: none');
+            header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
+            header('Cache-Control: public');
+            header('Content-Type: application/vnd.ms-excel');
+            header('Content-Description: File Transfer');
+            Header("Content-Disposition: attachment; filename=" . basename($file_name));
+            header('Content-Transfer-Encoding: binary');
+            Header("Content-Length:" . $file_size);
+        } else if ($file_type == 'picture') { //pictures
+            Header("Content-Type:image/jpeg");
+            Header("Accept-Ranges: bytes");
+            Header("Content-Disposition: attachment; filename=" . basename($file_name));
+            Header("Content-Length:" . $file_size);
+        } else { //other files
+            Header("Content-type: application/octet-stream");
+            Header("Accept-Ranges: bytes");
+            Header("Content-Disposition: attachment; filename=" . basename($file_name));
+            Header("Content-Length:" . $file_size);
+        }
+
+        $buffer = 1024;
+        $file_count = 0;
+//向浏览器返回数据
+        while (!feof($fp) && $file_count < $file_size) {
+            $file_con = fread($fp, $buffer);
+            $file_count+=$buffer;
+            echo $file_con;
+        }
+        //echo fread($fp, $file_size);
+        fclose($fp);
+        if ($deleteAfterDownload) {
+           // unlink($file_name);
+        }
+        return 1;
+    }
+
+}