我想在上传图片时传递参数。但是图像上传但我无法获取参数。实际上，参数或图像都可以上传，但不能同时上传。此外，参数不作为字符串接收，而是作为������JFIF������H��H��������XExif����MM��* received 。 我需要帮助。我找了类似的问题，但找不到答案。
_conn = (HttpURLConnection)_url.openConnection();
_conn.setDoOutput(true);
_conn.setDoInput(true);
_conn.setUseCaches(false);
_conn.setRequestProperty("Connection", "Keep-Alive");
_conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);
dos = new DataOutputStream(_conn.getOutputStream());
dos.writeBytes(twoHyphens + boundary + lineEnd);
String id = "h";
dos.writeBytes("Content-Disposition: form-data; name=\"id\"" + lineEnd);
dos.writeBytes("content-type: text/plain");
dos.writeBytes(id);
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"photo\";filename=\"" + path + "\"" + lineEnd);
dos.writeBytes(lineEnd);
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);
}
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
dos.flush();
dos.close();
fileInputStream.close();
BufferedReader reader = new BufferedReader(new InputStreamReader(_conn.getInputStream()));
String temp_string;
StringBuilder mystring = new StringBuilder();
while((temp_string = reader.readLine()) != null)
{
mystring.append(temp_string);
}
Log.v(LOG_TAG, mystring.toString());
return mystring.toString();
}
这是php代码
if($_SERVER["REQUEST_METHOD"] == "POST")
{
$id = $_POST['id'];
echo "id ". (string)$id;
if(isset($_FILES["photo"]["name"])){
$temp = explode(".",$_FILES["photo"]["name"]);
$target_file = $target_dir . $id. "." . end($temp);
echo $target_file;
if(move_uploaded_file($_FILES["photo"]["tmp_name"], $target_file))
{
echo "success";
}
else
{
echo( "error".$con->error);
}
答案 0 :(得分：-1)
我碰巧做了类似的事情。我在这里发布我的代码。我希望您能够根据需要进行编辑。在这里，我上传图像并传递json对象。 如果您仍然面临这个问题，请告诉我。这段代码对我来说非常合适。
String attachmentName = "bitmap";
String attachmentFileName = "bitmap.bmp";
String crlf = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
@Override
protected void onPreExecute() {
super.onPreExecute();
// Shows Progress Bar Dialog and then call doInBackground method
// showDialog(progress_bar_type);
progDailog.setMessage("Please Wait!");
progDailog.setIndeterminate(false);
progDailog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
progDailog.setCancelable(true);
progDailog.show();
}
protected Boolean doInBackground(String... urls) {
Log.d("inbakcground", "cheked");
Log.d("str ", PublishActivity.recipeStr[0]);
try {
ImageButton coverImage = (ImageButton) findViewById(R.id.CoverPic);
JSONObject recipeJson = new JSONObject();
recipeJson.put("Title", PublishActivity.recipeStr[0]);
recipeJson.put("Ingredients", PublishActivity.recipeStr[1]);
recipeJson.put("Recipe", PublishActivity.recipeStr[2]);
recipeJson.put("Author", PublishActivity.recipeStr[3]);
URL urlImage = new URL("http://10.0.2.2:8080/websevice");
HttpURLConnection urlConnectionImage = (HttpURLConnection) urlImage.openConnection();
Bitmap bitmap = ((BitmapDrawable) coverImage.getDrawable()).getBitmap();
urlConnectionImage.setUseCaches(false);
urlConnectionImage.setDoOutput(true);
urlConnectionImage.setDoInput(true);
urlConnectionImage.setRequestMethod("POST");
urlConnectionImage.setRequestProperty("Connection", "Keep-Alive");
urlConnectionImage.setRequestProperty("Cache-Control", "no-cache");
urlConnectionImage.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + this.boundary);
DataOutputStream request = new DataOutputStream(urlConnectionImage.getOutputStream());
request.writeBytes(this.twoHyphens + this.boundary + this.crlf);
request.writeBytes("Content-Disposition: form-data; name=\"" + this.attachmentName + "\";filename=\"" + this.attachmentFileName + "\"" + this.crlf);
request.writeBytes(this.crlf);
/* byte[] pixels = new byte[bitmap.getWidth() * bitmap.getHeight()];
for (int i = 0; i < bitmap.getWidth(); ++i) {
for (int j = 0; j < bitmap.getHeight(); ++j) {
//we're interested only in the MSB of the first byte,
//since the other 3 bytes are identical for B&W images
pixels[i + j] = (byte) ((bitmap.getPixel(i, j) & 0x80) >> 7);
}
}*/
ByteArrayOutputStream bos = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, 0 /*ignored for PNG*/, bos);
byte[] bitmapdata = bos.toByteArray();
request.write(bitmapdata);
request.writeBytes(this.crlf);
// request.writeBytes(this.twoHyphens + this.boundary + this.twoHyphens + this.crlf);
request.writeBytes(this.twoHyphens + this.boundary + this.crlf);
/******json***********/
String name = "recipe";
// request.writeBytes(this.twoHyphens + this.boundary + this.crlf);
request.writeBytes("Content-Disposition: form-data; name=\"" + name + "\";"+ this.crlf);
request.writeBytes(this.crlf);
request.writeBytes(recipeJson.toString());
request.writeBytes(this.crlf);
request.writeBytes(this.twoHyphens + this.boundary + this.twoHyphens + this.crlf);
request.flush();
Log.d("imageout", Integer.toString(urlConnectionImage.getResponseCode()));
request.close();
} catch (Exception e) {
Log.d("exeJsonPublish", e.toString());
return false;
}
return false;
}
@Override
protected void onPostExecute(Boolean result) {
super.onPostExecute(result);
progDailog.dismiss();
if (result) {
Log.d("hello1 in else", "else");
Toast.makeText(getApplicationContext(), "Successful", Toast.LENGTH_LONG).show();
Intent homeI = new Intent(getApplicationContext(), MainActivity.class);
homeI.putExtra("fromPublish", true);
homeI.putExtra("position", 0);
setResult(RESULT_OK, homeI);
finish();
} else
Toast.makeText(getApplicationContext(), "Failed", Toast.LENGTH_LONG).show();
Log.d("hello in else", "else");
}