問題描述

我需要一種上傳文件并將其發布到 php 頁面的方法...

I need a way to upload a file and POST it into php page...

我的php頁面是:

<?php 
$maxsize = 10485760;
$array_estensioni_ammesse=array('.tmp');
$uploaddir = 'uploads/';
if (is_uploaded_file($_FILES['file']['tmp_name']))
{
    if($_FILES['file']['size'] <= $maxsize)
    {
        $estensione = strtolower(substr($_FILES['file']['name'], strrpos($_FILES['file']['name'], "."), strlen($_FILES['file']['name'])-strrpos($_FILES['file']['name'], ".")));
        if(!in_array($estensione, $array_estensioni_ammesse))
        {
            echo "File is not valid!
";
        }
        else
        {
            $uploadfile = $uploaddir . basename($_FILES['file']['name']); 
            echo "File ". $_FILES['file']['name'] ." uploaded successfully.
"; 
            if (move_uploaded_file($_FILES['file']['tmp_name'], $uploadfile))
            {
                echo "File is valid, and was successfully moved.
";
            } 
            else 
                print_r($_FILES); 
        }
    }
    else
        echo "File is not valid!
";
}
else
{ 
    echo "Upload Failed!!!"; 
    print_r($_FILES);
} 
?>

我在我的桌面應用程序中使用這個 java 代碼:

and i use this java code in my desktop application:

HttpURLConnection httpUrlConnection = (HttpURLConnection)new URL("http://www.mypage.org/upload.php").openConnection();
        httpUrlConnection.setDoOutput(true);
        httpUrlConnection.setRequestMethod("POST");
        OutputStream os = httpUrlConnection.getOutputStream();
        Thread.sleep(1000);
        BufferedInputStream fis = new BufferedInputStream(new FileInputStream("tmpfile.tmp"));

        long totalByte = fis.available();
        long byteTrasferred = 0;
        for (int i = 0; i < totalByte; i++) {
            os.write(fis.read());
            byteTrasferred = i + 1;
        }

        os.close();
        BufferedReader in = new BufferedReader(
                new InputStreamReader(
                httpUrlConnection.getInputStream()));

        String s = null;
        while ((s = in.readLine()) != null) {
            System.out.println(s);
        }
        in.close();
        fis.close();

但我總是收到上傳失敗?。?！"消息.

But I receive always the "Upload Failed!!!" message.

推薦答案

即使線程很老了，可能還是有人在尋找更簡單的方法來解決這個問題(比如我:))

Even though the thread is very old, there may still be someone around looking for a more easy way to solve this problem (like me :))

經過一番研究，我找到了一種在不更改原始海報 Java 代碼的情況下上傳文件的方法.您只需要使用以下 PHP 代碼:

After some research I found a way to uplaod a file without changing the original poster's Java-Code. You just have to use the following PHP-code:

<?php
  $filename="abc.xyz";
  $fileData=file_get_contents('php://input');
  $fhandle=fopen($filename, 'wb');
  fwrite($fhandle, $fileData);
  fclose($fhandle);
  echo("Done uploading");
?>

此代碼只是獲取 java 應用程序發送的原始數據并將其寫入文件.然而，有一個問題:你沒有得到原始文件名，所以你必須以其他方式傳輸它.

This code is just fetching the raw data sent by the java-application and writing it into a file. There is, however one problem: You dont get the original filename, so you have to transmit it somehow else.

我通過使用 GET 參數解決了這個問題，這對 Java 代碼進行了一些必要的更改:

I solved this problem by using a GET-Parameter, which makes a little change in the Java-code necessary:

HttpURLConnection httpUrlConnection = (HttpURLConnection)new URL("http://www.mypage.org/upload.php").openConnection();

更改為

HttpURLConnection httpUrlConnection = (HttpURLConnection)new URL("http://www.mypage.org/upload.php?filename=abc.def").openConnection();

在您的 PHP 腳本中更改行

In your PHP-script you change the line

$filename="abc.xyz";

到

$filename=$_GET['filename'];

這個解決方案不使用任何外部庫，在我看來比其他一些發布的更簡單......

This solution doesn't use any external librarys and seems to me much more simple than some of the other posted ones...

希望我能幫助任何人:)

Hope I could help anyone:)

這篇關于使用 Java 將文件上傳和 POST 到 PHP 頁面的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！