使用HttpURLConnection的Android多部分文件上传 - 400错误请求错误 [英] Android Multipart File Upload using HttpURLConnection - 400 Bad Request Error
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问题描述
我已经尝试了不同的头和请求类型在我的代码和各种各样的stackoverflow解决方案，但仍然无法上传任何文件。
以HTML消息作为响应：
400 BAD请求
< html> ;
< body>
< script type =text / javascriptsrc =/ aes.js>< / script>
< script>
函数toNumbers（d）{
var e = [];
d.replace（/(..)/ g，function（d）{
e.push（parseInt（d，16））
}）;
return e
函数toHex（）{
for（var d = []，d = 1 == arguments.length&&&&& 0] .constructor == Array？arguments [0]：arguments，e =，f = 0; f 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>该网站需要使用Javascript才能正常运行，请在您的浏览器中启用Javascript，或使用带有Javascript支持的浏览器< / 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\\\
;
String twoHyphens = - ;
String boundary =*****;
int bytesRead，bytesAvailable，bufferSize;
byte [] buffer;
int maxBufferSize = 1 * 1024 * 1024;
文件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）;
返回0;
} else {
try {
FileInputStream fileInputStream = new FileInputStream（selectedFile）;
URL url =新的URL（serverURL）;
conn =（HttpURLConnection）url.openConnection（）;
conn.setDoInput（true）; //允许输入
conn.setDoOutput（true）; //允许输出
conn.setUseCaches（false）; //不要使用缓存副本
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）;
//创建最大大小的缓冲区
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（）;
//服务器响应（代码和消息）
serverResponseCode = conn.getResponseCode（）;
String serverResponseMessage = conn.getResponseMessage（）。toString（）;
$ b Log.i（TAG，HTTP Response is：+ serverResponseMessage +：+ serverResponseCode）;
DataInputStream inStream;
String str =;
String response =;
尝试{
inStream = new DataInputStream（conn.getInputStream（））; （（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（）;
//关闭流//
fileInputStream.close（）;
dos.flush（）;
dos.close（）;
if（serverResponseCode == 201）{
Log.e（TAG，*** SERVER RESPONSE：201+ response）;
$ b $ 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;
}
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））{
echoThe file。 basename（$ _FILES ['uploadedfile'] ['name']）。已上传;
} else {
echo上传文件时出现错误，请重试！;
}
？>
解决方案
我成功地测试了我的代码。
这似乎是免费的托管网站的问题。
我现在创建了一个servlet并在我的机器上进行了本地测试，然后将其上传到AWS并通过设备进行测试。两种方式，我能够从Android上传我的文件。
I am trying to write a generic code to upload files to any server (Multipart POST).
I have tried different headers and request types in my code and various stackoverflow solutions, but still not able to upload any file.
I keep getting following HTML message as response:
400 BAD Request
<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>
How can I write a generic code to upload files to servers in Android?
Android Code:
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;
}
PHP code for testing file upload:
<?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!";
}
?>
解决方案
I manage to test my code successfully.
It seems the issue was with the free hosting site.
I now created a servlet and tested locally on my machine and I uploaded it to AWS and tested via the device. Both ways, I was able to upload my file from Android.
这篇关于使用HttpURLConnection的Android多部分文件上传 - 400错误请求错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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