我必须允许用户在我的Android应用程序到PHP服务器的单个请求中上传多个文件（可以是图像/视频/音频）。我正在使用REST Web服务。
对于此功能，我使用以下代码：
/* To upload the multiple documents */
public void uploadFile() {
String charset = "UTF-8";
File[] uploadFileArray = new File[mediaList.size()];
for (int i = 0; i < mediaList.size(); i++) {
uploadFileArray[i] = new File(mediaList.get(i).getMediaPath());
}
try {
MultipartUtility multipart = new MultipartUtility(upLoadServerUri, charset);
for (int i = 0; i < mediaList.size(); i++) {
if (isImage)) {
multipart.addFilePart("image_doc[]", uploadFileArray[i]);
}
else if (isVideo) {
multipart.addFilePart("video_doc[]", uploadFileArray[i]);
}
else if (isAudio) {
multipart.addFilePart("audio_doc[]", uploadFileArray[i]);
}
}
List<String> responseUploadDocument = multipart.finish();
System.out.println("SERVER REPLIED:");
for (String line : responseUploadDocument) {
System.out.println(line);
responseUploadDocumentString = line;
}
if (responseUploadDocumentString != null) {
JSONObject jsonObj = new JSONObject(responseUploadDocumentString);
statusUploadDoc = jsonObj.getString("status");
}
} catch (Exception e) {
e.printStackTrace();
}
}
我的MultipartUtility Class如下：
public class MultipartUtility {
private final String boundary;
private static final String LINE_FEED = "\r\n";
private HttpURLConnection httpConn;
private String charset;
private OutputStream outputStream;
private PrintWriter writer;
public MultipartUtility(String requestURL, String charset)
throws IOException {
this.charset = charset;
boundary = "===" + System.currentTimeMillis() + "===";
URL url = new URL(requestURL);
httpConn = (HttpURLConnection) url.openConnection();
***httpConn.setChunkedStreamingMode(0);***
httpConn.setUseCaches(false);
httpConn.setDoOutput(true); // indicates POST method
httpConn.setDoInput(true);
httpConn.setRequestProperty("Content-Type",
"multipart/form-data; boundary=" + boundary);
httpConn.setRequestProperty("User-Agent", "CodeJava Agent");
httpConn.setRequestProperty("Test", "Bonjour");
outputStream = httpConn.getOutputStream();
writer = new PrintWriter(new OutputStreamWriter(outputStream, charset),
true);
}
public void addFormField(String name, String value) {
writer.append("--" + boundary).append(LINE_FEED);
writer.append("Content-Disposition: form-data; name=\"" + name + "\"")
.append(LINE_FEED);
writer.append("Content-Type: text/plain; charset=" + charset).append(
LINE_FEED);
writer.append(LINE_FEED);
writer.append(value).append(LINE_FEED);
writer.flush();
}
public void addFilePart(String fieldName, File uploadFile)
throws IOException {
String fileName = uploadFile.getName();
writer.append("--" + boundary).append(LINE_FEED);
writer.append(
"Content-Disposition: form-data; name=\"" + fieldName
+ "\"; filename=\"" + fileName + "\"")
.append(LINE_FEED);
writer.append(
"Content-Type: "
+ URLConnection.guessContentTypeFromName(fileName))
.append(LINE_FEED);
writer.append("Content-Transfer-Encoding: binary").append(LINE_FEED);
writer.append(LINE_FEED);
writer.flush();
FileInputStream inputStream = new FileInputStream(uploadFile);
byte[] buffer = new byte[4096];
int bytesRead = -1;
while ((bytesRead = inputStream.read(buffer)) != -1) {
outputStream.write(buffer, 0, bytesRead);
}
outputStream.flush();
inputStream.close();
writer.append(LINE_FEED);
writer.flush();
}
public void addHeaderField(String name, String value) {
writer.append(name + ": " + value).append(LINE_FEED);
writer.flush();
}
public List<String> finish() throws IOException {
List<String> response = new ArrayList<String>();
writer.append(LINE_FEED).flush();
writer.append("--" + boundary + "--").append(LINE_FEED);
writer.close();
// checks server's status code first
int status = httpConn.getResponseCode();
if (status == HttpURLConnection.HTTP_OK) {
BufferedReader reader = new BufferedReader(new InputStreamReader(
httpConn.getInputStream()));
String line = null;
while ((line = reader.readLine()) != null) {
response.add(line);
}
reader.close();
httpConn.disconnect();
} else {
throw new IOException("Server returned non-OK status: " + status);
}
return response;
}
}
但现在的问题是：
在本地服务器上：
在Live Server上：
我的本地和实时服务器都具有相同的配置。我不明白为什么setChunkedStremmingMode（0）不适用于实时服务器。
请检查服务器上处理文件上载的php.ini文件中的这两个设置。
; Maximum allowed size for uploaded files.
upload_max_filesize = 150M
; Must be greater than or equal to upload_max_filesize
post_max_size = 150M
您需要首先在服务器上正确设置这些设置，然后只有大文件上传才能正常工作。还要检查本地服务器上的设置。在编写代码来处理上传之前，这些设置更为重要，因为根据我的代码是正确的，因为文件上传对您有用。问题似乎是php.ini设置....
我有一个项目，可以上传高达48-50 MB的图像/文件大小。 [我正在使用Retrofit进行网络通信。]以下是示例项目的链接：https://github.com/DearDhruv/Retrofit-with-EventBus
这是代码：
private void startUploading(final File file) {
if (file == null || !isPictureValid(file.getAbsolutePath())) {
showMsg("File is not valid, try again.");
} else if (file.exists()) {
showProgressDialog();
String mimeType = "image/jpeg"
// "application/octet-stream"
// "multipart/form-data"
// "image/*"
// "multipart/mixed"
;
TypedFile typedFile = new TypedFile(mimeType, file);
mApiClient.uploadFile(UPLOAD_FILE_REQUEST_TAG, typedFile);
} else {
showMsg("File is corrupted.");
}
}
这是服务器端代码：
class ImageUploadStatus {
public $result_code = 0;
public $message = "Image upload failed.";}
class ImageResults {
public $name = "";
public $url = "";
public $size = "";
}
$status = new ImageUploadStatus ();
$results = new ImageResults ();
if ($_FILES ["file"] ["error"] > 0) {
header ( "HTTP/1.1 400 Bad Request" );
// echo "Error: " . $_FILES ["file"] ["error"] . "<br /> \n";
$status->message = "Error: " . $_FILES ["file"] ["error"];
} else {
if ($_FILES ["file"] ["error"] > 0) {
// echo "Error: " . $_FILES ["file"] ["error"] . "<br /> \n";
$status->message = "Error: " . $_FILES ["file"] ["error"];
} else {
// echo "Upload: " . $_FILES ["file"] ["name"] . "<br /> \n";
// echo "Type: " . $_FILES ["file"] ["type"] . "<br /> \n";
// echo "Size: " . ($_FILES ["file"] ["size"] / 1024) . " Kb<br /> \n";
// echo "Stored in: " . $_FILES ["file"] ["tmp_name"] . "<br /> \n";
}
$target_path = "../api/uploads/";
$target_path = $target_path . basename ( $_FILES ['file'] ['name'] );
//if (is_uploaded_file ( $_FILES ['uploadedfile'] ['tmp_name'] )) {
// echo "There was an error uploading the file, please try again!";
//$status->message = "There was an error uploading the file, please try again!";
//}
if (move_uploaded_file ( $_FILES ['file'] ['tmp_name'], $target_path )) {
// echo "The file " . basename ( $_FILES ['file'] ['name'] ) . " has been uploaded";
$status->message = "Image upload successful";
$status->result_code = 1;
$results->name = $_FILES ["file"] ["name"] . "";
$results->url = $target_path . "";
$results->size = ($_FILES ["file"] ["size"] / 1); // 1024 to convert in KB
} else {
// echo "There was an error Moving the file, please try again!";
//$status->message = "There was an error Moving the file, please try again!";
switch($_FILES['file']['error']){
case 0: //no error; possible file attack!
$status->message = "There was a problem with your upload.";
break;
case 1: //uploaded file exceeds the upload_max_filesize directive in php.ini
$status->message = "The file you are trying to upload is too big.";
break;
case 2: //uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the html form
$status->message = "The file you are trying to upload is too big.";
break;
case 3: //uploaded file was only partially uploaded
$status->message = "The file you are trying upload was only partially uploaded.";
break;
case 4: //no file was uploaded
$status->message = "You must select an image for upload.";
break;
default: //a default error, just in case! :)
$status->message = "There was a problem with your upload.";
break;
}
}
$response = array (
'status' => $status,
'results' => $results
);
// echo (json_encode ( $status ));
// echo (json_encode ( $results ));
echo (json_encode ( $response ));
}
我想这可能会有所帮助。
您可能还需要在PHP配置中提供上载文件的最大大小。