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php – 将图像从Android上传到MySQL数据库

发布时间:2020-12-13 16:46:22 所属栏目:PHP教程 来源:网络整理
导读:美好的一天!我正在尝试搜索从 Android上传图像文件到在线MySQL数据库的基本教程,但我找不到任何. 我现在正在开展一项活动,可以将用户的个人资料图片从Android上传到在线服务器. 我需要的是显示一个按钮,当它被点击时,用户可以从文件中选择一个图像.有人可以
美好的一天!我正在尝试搜索从 Android上传图像文件到在线MySQL数据库的基本教程,但我找不到任何.

我现在正在开展一项活动,可以将用户的个人资料图片从Android上传到在线服务器.

我需要的是显示一个按钮,当它被点击时,用户可以从文件中选择一个图像.有人可以指导我这样做吗?提前致谢!

解决方法

在客户端,您可以这样做.

HttpURLConnection connection = null;
DataOutputStream outputStream = null;
DataInputStream inputStream = null;    

String pathToOurFile = "path of the image.jpeg";
String urlServer = "http://xxx.xxx.xxx.xxx/uploader.php";
String lineEnd = "rn";
String twoHyphens = "--";
String boundary =  "*****";

int bytesRead,bytesAvailable,bufferSize;
byte[] buffer;
int maxBufferSize = 1*1024*1024;

try {
        FileInputStream fileInStream = new FileInputStream(new File(pathToOurFile) );

        URL url = new URL(urlServer);
        connection = (HttpURLConnection) url.openConnection();

       // Allow Inputs & Outputs
        connection.setDoInput(true);
        connection.setDoOutput(true);
        connection.setUseCaches(false);

        // Enable POST method
        connection.setRequestMethod("POST");

        connection.setRequestProperty("Connection","Keep-Alive");
        connection.setRequestProperty("Content-Type","multipart/form-data;boundary="+boundary);

        outputStream = new DataOutputStream( connection.getOutputStream() );
        outputStream.writeBytes(twoHyphens + boundary + lineEnd);
        outputStream.writeBytes("Content-Disposition: form-data; name="uploadedfile";filename="" + pathToOurFile +""" + lineEnd);
        outputStream.writeBytes(lineEnd);

        bytesAvailable = fileInStream.available();
        bufferSize = Math.min(bytesAvailable,maxBufferSize);
        buffer = new byte[bufferSize];

        // Read file
        bytesRead = fileInStream.read(buffer,bufferSize);

        while (bytesRead > 0)
        {
            outputStream.write(buffer,bufferSize);
            bytesAvailable = fileInStream.available();
            bufferSize = Math.min(bytesAvailable,maxBufferSize);
            bytesRead = fileInStream.read(buffer,bufferSize);
        }

        outputStream.writeBytes(lineEnd);
        outputStream.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);

        // Responses from the server (code and message)
        serverResponseCode = connection.getResponseCode();
        serverResponseMessage = connection.getResponseMessage();

        fileInputStream.close();
        outputStream.flush();
        outputStream.close();
    }
    catch (Exception ex)
    {
        //Exception handling
    }

服务器端

<?php
    $target_path  = "./";
    $target_path = $target_path . basename( $_FILES['uploadedfile']['name']);
    if(move_uploaded_file($_FILES['uploadedfile']['tmp_name'],$target_path)) {
         echo "Success";
    } else{
        echo "Error";
    }
?>

(编辑:李大同)

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