与描述一样，我正在Android中拍照。它被压缩并添加到byte[]然后base64encoded。它使用 JSON 发送到我的网络服务，在那里它“被认为”被解码并保存在 SQL表格行中。我可以将编码的字符串保存在一个单独的行中，所以我知道它已经到了那里。
任何人都可以看看这个并向我展示我做错了吗？ *抱歉冗长的代码。如果得到帮助，我不想错过任何东西！
ANDROID SIDE
@Override
protected String doInBackground(String... args) {
// TODO Auto-generated method stub
// Check for success tag
int success;
stream = new ByteArrayOutputStream();
picture.compress(Bitmap.CompressFormat.JPEG, 50, stream);
image = stream.toByteArray();
String ba1 = Base64.encodeToString(image, Base64.DEFAULT);
SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(MainScreen.this);
String post_username = sp.getString("username", "anon");
try {
ArrayList<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("username", post_username));
params.add(new BasicNameValuePair("picture", ba1));
JSONObject json = jsonParser.makeHttpRequest(POST_COMMENT_URL,
"POST", params);
success = json.getInt(TAG_SUCCESS);
if (success == 1) {
Log.d("Picture Added!", json.toString());
//finish();
return json.getString(TAG_MESSAGE);
} else {
Log.d("Upload Failure!", json.getString(TAG_MESSAGE));
return json.getString(TAG_MESSAGE);
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
protected void onPostExecute(String file_url) {
// dismiss the dialog once product deleted
pDialog.dismiss();
if (file_url != null) {
Toast.makeText(MainScreen.this, file_url, Toast.LENGTH_LONG)
.show();
}
}
}
}
PHP SIDE
<?php
require("config.inc.php");
if (!empty($_POST)) {
$user = $_POST['username'];
$data = $_POST['picture'];
$data = base64_decode($data);
$im = imagecreatefromstring($data);
header('Content-Type: image/jpeg', true);
ob_start();
imagejpeg($im);
$imagevariable = ob_get_contents();
ob_end_clean();
$query = "INSERT INTO pictures ( username, photo, rawdata ) VALUES ( :user, :photo, :raw ) ";
$query_params = array(
':user' => $user,
':photo' => $imagevariable,
':raw' => $_POST['picture']
);
try {
$stmt = $db->prepare($query);
$result = $stmt->execute($query_params);
}
catch (PDOException $ex) {
$response["success"] = 0;
$response["message"] = "Database Error. Couldn't add post!";
die(json_encode($response));
}
$response["success"] = 1;
$response["message"] = "Picture Successfully Added!";
echo json_encode($response);
} else {
}
?>
答案 0 :(得分：5)
我想发布我的解决方案，以防其他人遇到问题。我总是来到S.O.为了答案所以现在轮到我帮助别人了。使用位图我遇到了内存不足错误的问题。我将其更改为多部分帖子，将图片作为文件和字符串上传，但您可以添加任何字符串。第一部分是android端，下面是数据库的php。使用移动文件方法将图片添加到目录中的文件中。数据库存储该图片的路径。我搜索了两天，将它们从堆栈溢出的帖子中拼凑起来。
<强>机器人
public void onClick(View v) {
if (v.getId() == R.id.capture_btn) {
try {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, CAMERA_IMAGE_CAPTURE);
} catch (ActivityNotFoundException anfe) {
String errorMessage = "Whoops - your device doesn't support capturing images!";
Toast toast = Toast.makeText(this, errorMessage,
Toast.LENGTH_SHORT);
toast.show();
}
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == CAMERA_IMAGE_CAPTURE
&& resultCode == Activity.RESULT_OK) {
getLastImageId();
new PostPicture().execute();
}
}
private int getLastImageId() {
// TODO Auto-generated method stub
final String[] imageColumns = { MediaStore.Images.Media._ID,
MediaStore.Images.Media.DATA };
final String imageOrderBy = MediaStore.Images.Media._ID + " DESC";
Cursor imageCursor = managedQuery(
MediaStore.Images.Media.EXTERNAL_CONTENT_URI, imageColumns,
null, null, imageOrderBy);
if (imageCursor.moveToFirst()) {
int id = imageCursor.getInt(imageCursor
.getColumnIndexOrThrow(MediaStore.Images.Media._ID));
fullPath = imageCursor.getString(imageCursor
.getColumnIndex(MediaStore.Images.Media.DATA));
Log.d("pff", "getLastImageId: :id " + id);
Log.d("pff", "getLastImageId: :path " + fullPath);
return id;
} else {
return 0;
}
}
class PostPicture extends AsyncTask<String, String, String> {
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(MainScreen.this);
pDialog.setMessage("Uploading Picture");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
@Override
protected String doInBackground(String... args) {
// TODO Auto-generated method stub
// Check for success tag
HttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost("http://www.your-php-page.php");
try {
MultipartEntity entity = new MultipartEntity(
HttpMultipartMode.BROWSER_COMPATIBLE);
File file = new File(fullPath);
cbFile = new FileBody(file, "image/jpeg");
Log.d("sending picture", "guest name is " + guest_name);
Log.d("Sending picture", "guest code is " + guest_code);
entity.addPart("name",
new StringBody(guest_name, Charset.forName("UTF-8")));
entity.addPart("code",
new StringBody(guest_code, Charset.forName("UTF-8")));
entity.addPart("picture", cbFile);
post.setEntity(entity);
HttpResponse response1 = client.execute(post);
HttpEntity resEntity = response1.getEntity();
String Response = EntityUtils.toString(resEntity);
Log.d("Response", Response);
} catch (IOException e) {
Log.e("asdf", e.getMessage(), e);
}
return null;
}
protected void onPostExecute(String file_url) {
// dismiss the dialog once product deleted
pDialog.dismiss();
if (file_url != null) {
Toast.makeText(MainScreen.this, file_url, Toast.LENGTH_LONG)
.show();
}
}
}
这是 PHP 。另请注意，我正在包含我的数据库登录页面。你可以输入你的d.b.密码并在这里登录，但我选择不这样做。
<?php
require("config.inc.php");
if (!empty($_POST)) {
if (empty($_POST['name'])) {
$response["success"] = 0;
$response["message"] = "Did not receive a name";
die(json_encode($response));
} else {
$name = $_POST['name'];
}
if (empty($_FILES['picture'])) {
$response["success"] = 0;
$response["message"] = "Did not receive a picture";
die(json_encode($response));
} else {
$file = $_FILES['picture'];
}
$target_path = "uploads/whatever-you-want-it-to-be/";
// It could be any string value above
/* Add the original filename to our target path.
Result is "uploads/filename.extension" */
$target_path = $target_path . basename( $_FILES['picture']['name']);
if(move_uploaded_file($_FILES['picture']['tmp_name'], $target_path)) {
echo "The file ". basename( $_FILES['picture']['name']).
" has been uploaded";
} else{
$response["success"] = 0;
$response["message"] = "Database Error. Couldn't upload file.";
die(json_encode($response));
}
} else {
$response["success"] = 0;
$response["message"] = "You have entered an incorrect code. Please try again.";
die(json_encode($response));
}
$query = "INSERT INTO name-of-table ( directory, name, photo ) VALUES ( directory, :name, :photo ) ";
$query_params = array(
':directory' => $directory,
':name' => $name,
':photo' => $_FILES['picture']['name']
);
try {
$stmt = $db->prepare($query);
$result = $stmt->execute($query_params);
}
catch (PDOException $ex) {
$response["success"] = 0;
$response["message"] = "Database Error. Couldn't add path to picture";
die(json_encode($response));
}
$response["success"] = 1;
$response["message"] = "Picture Successfully Added!";
die (json_encode($response));
}
?>