英文:
Sending a file to PHP
问题
在我的Android Studio代码中，我打开摄像头并拍照，然后可以保存照片。然而，我想将这张JPG图片发送到我的PHP代码。我已经解决了将字符串发送到PHP的问题，但是当我尝试发送图像时却无法工作。因此，我将图像编码为base64字符串，试图通过这种方式发送，但仍然不起作用。
Java代码：
public class celebs extends AsyncTask<String, String, String> {
@Override
protected String doInBackground(String... params) {
// ...
String encode = encodeFileToBase64Binary(Image);
try {
// ...
URL url = new URL("http://10.167.120.26/App/pythonconnect.php?" + encode);
// ...
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}
@RequiresApi(api = Build.VERSION_CODES.O)
private static String encodeFileToBase64Binary(File file){
String encodedfile = null;
try {
FileInputStream fileInputStreamReader = new FileInputStream(file);
byte[] bytes = new byte[(int)file.length()];
fileInputStreamReader.read(bytes);
encodedfile = Base64.getEncoder().encodeToString(bytes);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return encodedfile;
}
PHP代码：
<?php
if (isset($_POST["Image"])) {
include "connection.php";
$image = $_POST["Image"];
$message = exec("/Applications/XAMPP/xamppfiles/htdocs/App/database.py 2>&1 '$imagestr'");
echo($message);
}
?>
错误信息：
java.io.FileNotFoundException: http://192.168.43.35:80/App/pythonconnect.php?Image=%2F9j%2F4QFnRXhpZg...
（以下部分由于篇幅限制省略，如果需要继续翻译，请提供更多信息。）
英文:
In my Android Studio code, I open up my camera and take a picture which I can save. However, I then want to send this JPG picture to my PHP code. I have it sorted for sending strings to PHP however when I try to send an image it doesn't work. Because of this I have encoded my image into a base64 string to try and send it that way but it's still not working.
Java code:
public class celebs extends AsyncTask<String, String, String> {
@Override
protected void onPreExecute() {
super.onPreExecute();
}
@Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
//Toast.makeText(getBaseContext(),s,Toast.LENGTH_SHORT).show();
}
@RequiresApi(api = Build.VERSION_CODES.O)
@SuppressLint("WrongThread")
@Override
protected String doInBackground(String... params) {
sharedPreferenceConfig = new SharedPreferenceConfig(getApplicationContext());
Intent intent = getIntent();
File Image = (File) intent.getSerializableExtra("Image");
String encode = encodeFileToBase64Binary(Image);
try {
String data = URLEncoder.encode("Image", "UTF-8") + "=" +
URLEncoder.encode(String.valueOf(Image), "UTF-8");
//URL url = new URL("http://192.168.43.35:80/App/pythonconnect.php?" + data);
URL url = new URL("http://10.167.120.26/App/pythonconnect.php?" + encode);
System.out.println("1");
URLConnection con = url.openConnection();
System.out.println("2");
con.setDoOutput(true);
System.out.println("3");
BufferedReader read = new BufferedReader(new InputStreamReader(con.getInputStream()));
StringBuilder s = new StringBuilder();
String line = null;
while ((line = read.readLine()) != null) {
s.append(line);
}
final String result = s.toString();
System.out.println(result);
}
catch (Exception e) {
e.printStackTrace();
}
return null;
}
}
@RequiresApi(api = Build.VERSION_CODES.O)
private static String encodeFileToBase64Binary(File file){
String encodedfile = null;
try {
FileInputStream fileInputStreamReader = new FileInputStream(file);
byte[] bytes = new byte[(int)file.length()];
fileInputStreamReader.read(bytes);
encodedfile = Base64.getEncoder().encodeToString(bytes);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return encodedfile;
}
ERROR:
W/System.err: java.io.FileNotFoundException: http://192.168.43.35:80/App/pythonconnect.php?Image=%2F9j%2F4QFnRXhpZgAATU0AKgAAAAgABwEAAAQAAAABAAAPwAEBAAQAAAABAAAL0AEPAAIAAAAHAAAAYgEQAAIAAAAJAAAAaQESAAMAAAABAAMAAAEyAAIAAAAUAAAAcodpAAQAAAABAAAAhgAAAABHb29nbGUAUGl4ZWwgM2EAMjAyMDowMzoxNSAxNjozODoyMwAADYKaAAUAAAABAAABKIKdAAUAAAABAAABMIgnAAMAAAABAEsAAJAQAAIAAAAHAAABOJIBAAoAAAABAAABP5ICAAUAAAABAAABR5IGAAUAAAABAAABT5IJAAMAAAABAAAAAJIKAAUAAAABAAABV5KQAAIAAAAENjY0AKACAAQAAAABAAAPwKADAAQAAAABAAAL0KQMAAMAAAABAAEAAAAAAAAAmCMDO5rKAAAAALQAAABkKzAwOjAwAP%2F%2F%2FWgAAABkAAAAqQAAAGQAAABjAAAD6AAAEVgAAAPo%2F%2BAAEEpGSUYAAQEAAAEAAQAA%2F9sAQwACAQEBAQECAQEBAgICAgIEAwICAgIFBAQDBAYFBgYGBQYGBgcJCAYHCQcGBggLCAkKCgoKCgYICwwLCgwJCgoK%2F9sAQwECAgICAgIFAwMFCgcGBwoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoK%2F%2BICZElDQ19QUk9GSUxFAAEBAAACVAAAAAAEAAAAbW50clJHQiBYWVogB%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%2BEAAC2w3BhcmEAAAAAAAMAAAACZmYAAPKnAAANWQAAE9AAAApbc2YzMgAAAAAAAQxCAAAF3v%2F%2F8ycAAAeTAAD9kP%2F%2F%2B6P%2F%2F%2F2kAAAD3AAAwG7%2FwAARCAvQD8ADASIAAhEBAxEB%2F8QAHwAAAQUBAQEBAQEAAAAAAAAAAAECAwQFBgcICQoL%2F8QAtRAAAgEDAwIEAwUFBAQAAAF9AQIDAAQRBRIhMUEGE1FhByJxFDKBkaEII0KxwRVS0fAkM2JyggkKFhcYGRolJicoKSo0NTY3ODk6Q0RFRkdISUpTVFVWV1hZWmNkZWZnaGlqc3R1dnd4eXqDhIWGh4iJipKTlJWWl5iZmqKjpKWmp6ipqrKztLW2t7i5usLDxMXGx8jJytLT1NXW19jZ2uHi4%2BTl5ufo6erx8vP09fb3%2BPn6%2F8QAHwEAAwEBAQEBAQEBAQAAAAAAAAECAwQFBgcICQoL%2F8QAtREAAgECBAQDBAcFBAQAAQJ3AAECAxEEBSExBhJBUQdhcRMiMoEIFEKRobHBCSMzUvAVYnLRChYkNOEl8RcYGRomJygpKjU2Nzg5OkNERUZHSElKU1RVVldYWVpjZGVmZ2hpanN0dXZ3eHl6goOEhYaHiImKkpOUlZaXmJmaoqOkpaanqKmqsrO0tba3uLm6wsPExcbHyMnK0tPU1dbX2Nna4uPk5ebn6Onq8vP09fb3%2BPn6%2F9oADAMBAAIRAxEAPwD8aoLF7hZDf3ckkxUhgDxgAdB2%2FLvT2VrYHex2YxjOec%2B1Kv2K2v8Azri3Bkf%2FAFeAcH05%2FwA%2FrVd9Se3vlhuYf3RYZYLkk%2BmenT9a%2BgOcuvHIrZhnYqVC9Og4%2FwAKSTMNu9vHKGjaT5uPbp%2Bn%2FwBao3ubkt%2FooyJGG4txge3qeB%2FOrK2ub1be225IJchzg%2F8A1v8ACgDP1BEEK2guiYiwUAHj%2FP6GrNwzwwswQO4XsvYD9fSporpEZkW2WN8YcFMkn15%2Fzz9KqXlzqcKb7a3VmUgMzdMZpbDTsKoEnzttU7Rjd%2BVWklnhfYk5VsdQaYlstzHIphY3EgGJFx8oHtRBZyWKorZ%2BRgAzAZH5ewpjkOlu7V7ZIi0geBmO12JVzx6%2Buf0ot7xdRsk1CKb96s5YID0XGMdOOp57fSrP2bTJpFluZAwB6bTkn8KbthVtoDLEONynB6cfyoJImRLu7kvchVRQrEjG4jHI%2FwA55zT7O3uJlluJioiVMonGScdOe3T8%2FwAaR7aF1dVDbW%2B7uPHtmpUE1nch7l%2F3RTDQgDH1%2FwDrUAVkuCoVCASenOKlg1S4j02XTIxtEkqsxDZ3Y6dfqeKLC2%2B0281xKq5jcBVyckE9ffHGfr3ogjsYtTFw23oB1wTzXQVEijtbd7KWwWUK8pGVVeD7EjoOP%2F15qV7FoAV%2B1ENgEYOc%2FwCee9OeNRcLHCg%2FeZLEY4%2FxpGggs7uMXV9kSLjaU6dx0%2Fz2oKK%2BoXUEbx2NzF5izDBcrkcfyz%2BVJc3t5YwiGyuAqLhQW5wMdvfp%2BXtWi9jHI6XjIhgRsFANxJx7%2FUfrSSJomoRMsoUIWICE9uCCT%2FkVoZlCWa0S2tLm3tw4VcmMDkkjkjB9%2B1aKzxx28sdhaCJJySUbBPJz%2Fj%2BdVrwW9jcxJAu9Ix8jp0wfpVld0w3ISQB19qlRsBVVXjlVUyN6fNkDgU6dp4UjhNw5NudqxDt3%2FH%2BtNkvbaeVo4ZQzRHB24x2%2FOnMJEaN4pMSPyXBPGPapMx0kEczI7XDCTIwhb7nA%2FKn3xtYHCW8geVF%2BYYIG4%2Bmaq3Nnbeetzjb8w3Ko4xj26VavVtSEMMZVg4JYvnPt04oAZNFaarMun3kq7wMIAuNxPb3zmrEFtOZR5t2FaOJgdxIJ%2FwDr5%2FyKSXdviME6xZO4lRg4Hv8A4eopggaOQG6uQzkkqNpAxTNCG1M8EACQSMATyF44J5qxLFdWmniRZFd5zvIPHHHH%2FwBYUkokuV2QyFQhG7CggjPP%2BfpU7WqSIGYgHPykihIDJsRb2btLNGqTFyWfcTkEnI5%2Bv6mrl0mJh9hsi5dDlnI9%2FwDPp1qW6s4zEGkUMBy2cEU%2B0kt5FeJSY227UYDOcke2OlZAQ2VxJfCRHYmUITnrz6%2B%2FSobqb7OY3v4gVBO3K53ZpNOt5La8mfljuI%2BY%2FpirbGOaYTXMYO1sqMELn8PxquYhqxJdWZ1Bopbm02KqZDYySCOf0pbxbGKLdESCW6Fun1z71De3E8Ej3M%2F%2BpH3FiXBX%2FPp%2BVS2lk01k1zC6FmYAeZggf5%2Fzmr3EKst8EWJrf92vysVGenr%2BlS4tonLRoFcqTgcH%2FPWnQfbYUf7ZcMTgAc8ADt%2FL8hUFub2GARJJkmT77L2yB6UgHm3tZpEm853cEF
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:255)
at com.example.wit.Celeb$celebs.doInBackground(Celeb.java:99)
at com.example.wit.Celeb$celebs.doInBackground(Celeb.java:51)
at android.os.AsyncTask$3.call(AsyncTask.java:378)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:289)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.lang.Thread.run(Thread.java:919)
My php code:
<?php
if (isset($_POST["Image"])) {
"include connection.php";
$image = $_POST["Image"];
$message = exec("/Applications/XAMPP/xamppfiles/htdocs/App/database.py 2>&1 '$imagestr'");
echo($message);
}
?>
答案1
得分: 0
Sending image as base64 encoded string in not an ideal method because GET and POST have character limitation in their request. This will cause 413 request entity too large error.
Best method for sending image to server is using Multipart request from Android.
Take a look at this solution
英文:
Sending image as base64 encoded string in not an ideal method because GET and POST have character limitation in their request. This will cause 413 request entity too large error.
Best method for sending image to server is using Multipart request from Android.
Take a look at this solution
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