Java PHP 将文本文件发送到服务器

Question

我想将一个文本文件从java类发送到php并将其存储在服务器上。但是文件永远不会到达那里

这是我的Java代码：

public class JavaUrlConnectionReader
{
    public static void main(String[] args) throws Exception {
        HttpURLConnection httpUrlConnection = (HttpURLConnection) new URL("http://URL/upload.php").openConnection();
        httpUrlConnection.setDoOutput(true);
        httpUrlConnection.setRequestMethod("POST");
        File myFile = new File ("/path_to_file/test.txt");
        byte [] mybytearray  = new byte [(int)myFile.length()];
        FileInputStream fis = new FileInputStream(myFile);
        OutputStream os = httpUrlConnection.getOutputStream();
        BufferedInputStream bis= new BufferedInputStream(fis);
        bis.read(mybytearray,0,mybytearray.length);
        System.out.println("Sending the file of size:"+ mybytearray.length + " bytes");
        os.write(mybytearray,0,mybytearray.length);
        System.out.println("File sent.");
        BufferedReader in = new BufferedReader(new InputStreamReader(httpUrlConnection.getInputStream()));
        String s = null;
        while ((s = in.readLine()) != null) {
            System.out.println(s);
        }
        os.flush();
        bis.close();
        os.close();
        fis.close();
        in.close();
     }
}

这是PHP脚本

    <?php 
$target_path = "../output/"; 
$target_path = $target_path . basename( $_FILES['uploadedfile']['name']); 

if(move_uploaded_file($_FILES['uploadedfile']['tmp_name'], $target_path)) { 
    echo "The file ". basename( $_FILES['uploadedfile']['name'])." has been uploaded"; 
} 
else{ 
    echo "There was an error uploading the file, please try again!"; 
}

?> 

似乎文本文件永远不会到达那里。我认为java代码应该没问题。我在 php 文件中做错了什么。任何帮助 php 文件有什么问题？

Answer 1

这是我用来上传文件的方式。也许它会帮助你。

        String postReceiverUrl = "http://URL/upload.php";
        HttpClient httpClient = new DefaultHttpClient();
        HttpPost httpPost = new HttpPost(postReceiverUrl);
        //Create File
        File file = new File("/path_to_file/test.txt");
        FileBody fileBody = new FileBody(file);
        //Set up HTTP post
        MultipartEntity reqEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
        reqEntity.addPart("MyTxtFile", fileBody);
        httpPost.setEntity(reqEntity);
        HttpResponse response = httpClient.execute(httpPost);
        HttpEntity resEntity = response.getEntity();
        if (resEntity != null) {
            String responseStr = EntityUtils.toString(resEntity).trim();
            System.out.println(responseStr);
            System.out.println(response.getStatusLine());
        }

上传.php文件

<?php 
$target_path = "../output/"; 
$target_path = $target_path . basename( $_FILES['MyTxtFile']['name']); 

if(move_uploaded_file($_FILES['MyTxtFile']['tmp_name'], $target_path)) { 
echo "The file ". basename( $_FILES['MyTxtFile']['name'])." has been uploaded"; 
} 
else{ 
echo "There was an error uploading the file, please try again!"; 
}

?> 

Answer 2

似乎您只是准备了 POST 参数，并没有最终发送 HTTP 请求。

我更喜欢使用 Apache httpcomponents-client 库，这里非常简单：

HttpClient httpclient = new DefaultHttpClient();
        HttpPost httppost = new HttpPost(url);
        // Request parameters and other properties.
        List<NameValuePair> params = new ArrayList<NameValuePair>(2);
        for (Entry<String, String> p : postArgs.entrySet()) {
            params.add(new BasicNameValuePair(p.getKey(), p.getValue()));
        }
        httppost.setEntity(new UrlEncodedFormEntity(params, "UTF-8"));
        // Execute and get the response.
        HttpResponse response = httpclient.execute(httppost);
        HttpEntity entity = response.getEntity();
        if (entity != null) {
            InputStream instream = entity.getContent();
            return instream;
        }