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Detailed explanation on uploading word, txt, Excel, PPT and other files to WeChat mini program

jacklove

Jun 11, 2018 pm 05:34 PM

Currently, the mini program does not have an API that can implement this function, so I implement it here by using web-view;

Implementation process:

1. Configure the business domain name in the background of the mini program

2. Write an html on the server to implement the form upload file

3. The back-end php receives the file and saves it to a server folder, and saves the file name to the database for later retrieval

4. Create a page in the WeChat applet and use web-view to upload files;

Rendering:

Detailed implementation:

1. Configure the business domain name in the mini program background

Address: https://mp.weixin.qq.com/wxopen/appdatacount

2. Write an html on the server to implement the form upload file

index.html file

<!DOCTYPE html>
<html>

	<head>
		<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0" />
		<meta charset="UTF-8">
		<title>Title</title>
		<script src="https://ajax.aspnetcdn.com/ajax/jQuery/jquery-3.2.1.js"></script>
	</head>

	<body>
		<form id="form1" action="https://dwb.lynncain.cn/H5/up_file.php" target="frame1" method="post" enctype="multipart/form-data">
			<input type="file" name="file">
			<input type="button" value="上傳" onclick="upload()">
		</form>
		<iframe name="frame1" frameborder="0" height="40"></iframe>
		<!-- 其實我們可以把iframe標(biāo)簽隱藏掉 -->
		<script type="text/javascript">
			function upload() {
				$("#form1").submit();
				var t = setInterval(function() {
					//獲取iframe標(biāo)簽里body元素里的文字。即服務(wù)器響應(yīng)過來的"上傳成功"或"上傳失敗"
					var word = $("iframe[name=&#39;frame1&#39;]").contents().find("body").text();
					if(word != "") {
//						alert(word); //彈窗提示是否上傳成功
//						clearInterval(t); //清除定時器
					}
				}, 1000);
			}
		</script>
	</body>

</html>

##3. The back-end php receives the file and saves it to a server folder, and saves the file name to the database for later retrieval using

up_file.php file:

<?php  
    header("Content-Type:text/html;charset=utf8"); 
	header("Access-Control-Allow-Origin: *"); //解決跨域
	header(&#39;Access-Control-Allow-Methods:POST&#39;);// 響應(yīng)類型  
	header(&#39;Access-Control-Allow-Headers:*&#39;); // 響應(yīng)頭設(shè)置 
    $link=mysql_connect("localhost","root","root"); 
    mysql_select_db("new_test", $link); //選擇數(shù)據(jù)庫
    mysql_query("SET NAMES utf8");//解決中文亂碼問題
	error_reporting(0);
	if ($_FILES["file"]["error"] > 0)  
	  {  
	  echo "錯誤: " . $_FILES["file"]["error"] . "<br />";  
	  }  
	else  
	  {  
		$dlog["name"]=$_FILES["file"]["name"];
  		$dlogs=$dlog;	
    	//echo urldecode(json_encode($dlogs));
		$name =$_FILES["file"]["name"];
		echo &#39;上傳成功！&#39;;
		echo $name;
			//插入數(shù)據(jù)到數(shù)據(jù)庫 
			$strsql = "insert into name (fileName) values(&#39;$name&#39;)";
			//mysql_query() 函數(shù)執(zhí)行一條 MySQL 查詢。SELECT，SHOW，EXPLAIN 或 DESCRIBE 都需要用這個函數(shù)執(zhí)行
			$result = @mysql_query($strsql);
//	  echo "文件名: " . $_FILES["file"]["name"] . "<br />";  
//	  echo "類型: " . $_FILES["file"]["type"] . "<br />";  
//	  echo "大小: " . ($_FILES["file"]["size"] / 1024) . " Kb<br />";   
	  }  
	 if (file_exists("upload/" . $_FILES["file"]["name"]))  
	    {  
//	      echo $_FILES["file"]["name"] . " 文件已經(jīng)存在. ";  
	    }  
	else  
	    {  
	      move_uploaded_file($_FILES["file"]["tmp_name"],  
	      "upload/" . $_FILES["file"]["name"]);  
//	      echo "文件已經(jīng)被存儲到: " . "upload/" . $_FILES["file"]["name"];  
	    }   
?>

4. Create a WeChat applet page, which uses web-view to upload files;

web.wxml file

<!--pages/web/web.wxml-->
 <web-view src=&#39;https://dwb.lynncain.cn/H5/&#39;></web-view>

Note: The WeChat applet web-view tag is used as above, no redundant code is required.

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