java-使用HttpURLConnection的Android多部分文件上传-400错误的请求错误
作者：互联网
我正在尝试编写通用代码以将文件上传到任何服务器(多部分POST).
我在代码和各种stackoverflow解决方案中尝试了不同的标头和请求类型,但仍然无法上传任何文件.
我不断收到以下HTML消息作为响应：
400错误的要求
<html>
<body>
<script type="text/javascript" src="/aes.js"></script>
<script>
function toNumbers(d) {
var e = [];
d.replace(/(..)/g, function(d) {
e.push(parseInt(d, 16))
});
return e
}
function toHex() {
for (var d = [], d = 1 == arguments.length && arguments[0].constructor == Array ? arguments[0] : arguments, e = "", f = 0; f < d.length; f++) e += (16 > d[f] ? "0" : "") + d[f].toString(16);
return e.toLowerCase()
}
var a = toNumbers("f655ba9d09a112d4968c63579db590b4"),
b = toNumbers("98344c2eee86c3994890592585b49f80"),
c = toNumbers("0a569f28135dfc293e0b189974d6ae3d");
document.cookie = "__test=" + toHex(slowAES.decrypt(c, 2, a, b)) + "; expires=Thu, 31-Dec-37 23:55:55 GMT; path=/";
location.href = "http://xxxxxxxxxx/uploadServer.php?i=1";
</script>
<noscript>This site requires Javascript to work, please enable Javascript in your browser or use a browser with Javascript support</noscript>
</body>
</html>
如何编写通用代码将文件上传到Android中的服务器？
Android代码：
private int uploadFile(final String selectedFilePath, String serverURL) {
Log.d(TAG, "uploadFile.... File->"+selectedFilePath+" to Server->"+serverURL);
int serverResponseCode = 0;
HttpURLConnection conn;
DataOutputStream dos;
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
int bytesRead, bytesAvailable, bufferSize;
byte[] buffer;
int maxBufferSize = 1 * 1024 * 1024;
File selectedFile = new File(selectedFilePath);
String[] parts = selectedFilePath.split("/");
final String fileName = parts[parts.length - 1];
Log.d(TAG, fileName);
if (!selectedFile.isFile()) {
// TODO no file exists
Log.i(TAG, selectedFile+" not exists");
return 0;
} else {
try {
FileInputStream fileInputStream = new FileInputStream(selectedFile);
URL url = new URL(serverURL);
conn = (HttpURLConnection) url.openConnection();
conn.setDoInput(true); // Allow Inputs
conn.setDoOutput(true); // Allow Outputs
conn.setUseCaches(false); // Don't use a Cached Copy
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("ENCTYPE", "multipart/form-data");
conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);
conn.setRequestProperty("uploadedfile", fileName);
conn.setRequestProperty("connection", "close");
dos = new DataOutputStream(conn.getOutputStream());
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"uploadedfile\";filename=\"" + fileName + "\"" + lineEnd);
dos.writeBytes(lineEnd);
// create a buffer of maximum size
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
buffer = new byte[bufferSize];
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
while (bytesRead > 0) {
dos.write(buffer, 0, bufferSize);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
Log.i(TAG,"while..");
}
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
conn.connect();
// Responses from the server (code and message)
serverResponseCode = conn.getResponseCode();
String serverResponseMessage = conn.getResponseMessage().toString();
Log.i(TAG, "HTTP Response is : " + serverResponseMessage + ": " + serverResponseCode);
DataInputStream inStream;
String str="";
String response="";
try {
inStream = new DataInputStream(conn.getInputStream());
while ((str = inStream.readLine()) != null) {
Log.e(TAG, "SOF Server Response" + str);
response=str;
}
inStream.close();
}
catch (IOException ioex) {
Log.e(TAG, "SOF error: " + ioex.getMessage(), ioex);
}
conn.disconnect();
//close the streams //
fileInputStream.close();
dos.flush();
dos.close();
if(serverResponseCode == 201){
Log.e(TAG,"*** SERVER RESPONSE: 201"+response);
}
}
catch (MalformedURLException ex) {
ex.printStackTrace();
Log.e(TAG, "UL error: " + ex.getMessage(), ex);
}
catch (Exception e) {
e.printStackTrace();
Log.e(TAG, "Exception : "+ e.getMessage());
}
return serverResponseCode;
}
用于测试文件上传的PHP代码：
<?php
$target_path = "uploads/";
$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!";
}
?>
解决方法:
我设法成功地测试了我的代码.
看来问题出在免费托管网站上.
现在,我创建了一个Servlet,并在我的计算机上进行了本地测试,然后将其上传到AWS并通过设备进行了测试.两种方式都可以从Android上传文件.
标签：android,java,file-upload,multipartform-data,httpurlconnection 来源： https://codeday.me/bug/20191011/1895310.html