我仍然是初学者的Andorid编程,并需要一些帮助以下:
我现在有两个代码,第一个将图像上传到服务器,并将路径存储到MySQL表中。第二个代码将2个EditText字段值存储到MySQL数据库表中。我真正想要的是将这两个代码结合起来,这样就可以将一个图像上传到服务器,然后将带有2个EditText字段值的关联字符串路径一次存储到MySQL数据库表中。
1.)为了上传图像并将字符串路径存储到MySQL表中,我有以下代码:
上传图像到服务器(JAVA端):
public class MainActivity extends Activity implements OnClickListener {
private TextView messageText;
private Button uploadButton, btnselectpic;
private ImageView imageview;
private int serverResponseCode = 0;
private ProgressDialog dialog = null;
private String upLoadServerUri = null;
private String imagepath = null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
uploadButton = (Button) findViewById(R.id.uploadButton);
btnselectpic = (Button) findViewById(R.id.button_selectpic);
messageText = (TextView) findViewById(R.id.messageText);
imageview = (ImageView) findViewById(R.id.imageView_pic);
btnselectpic.setOnClickListener(this);
uploadButton.setOnClickListener(this);
upLoadServerUri = "http://10.0.2.2/uploads/UploadToServer.php";
ImageView img = new ImageView(this);
}
@Override
public void onClick(View arg0) {
if (arg0 == btnselectpic) {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(
Intent.createChooser(intent, "Complete action using"), 1);
} else if (arg0 == uploadButton) {
dialog = ProgressDialog.show(MainActivity.this, "",
"Uploading file...", true);
messageText.setText("uploading started.....");
new Thread(new Runnable() {
public void run() {
uploadFile(imagepath);
}
}).start();
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == 1 && resultCode == RESULT_OK) {
// Bitmap photo = (Bitmap) data.getData().getPath();
Uri selectedImageUri = data.getData();
imagepath = getPath(selectedImageUri);
Bitmap bitmap = BitmapFactory.decodeFile(imagepath);
imageview.setImageBitmap(bitmap);
messageText.setText("Uploading file path:" + imagepath);
}
}
public String getPath(Uri uri) {
String[] projection = { MediaStore.Images.Media.DATA };
Cursor cursor = managedQuery(uri, projection, null, null, null);
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
public int uploadFile(String sourceFileUri) {
String fileName = sourceFileUri;
HttpURLConnection conn = null;
DataOutputStream dos = null;
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
int bytesRead, bytesAvailable, bufferSize;
byte[] buffer;
int maxBufferSize = 1 * 1024 * 1024;
File sourceFile = new File(sourceFileUri);
if (!sourceFile.isFile()) {
dialog.dismiss();
Log.e("uploadFile", "Source File not exist :" + imagepath);
runOnUiThread(new Runnable() {
public void run() {
messageText.setText("Source File not exist :" + imagepath);
}
});
return 0;
} else {
try {
// open a URL connection to the Servlet
FileInputStream fileInputStream = new FileInputStream(
sourceFile);
URL url = new URL(upLoadServerUri);
// Open a HTTP connection to the URL
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("uploaded_file", fileName);
dos = new DataOutputStream(conn.getOutputStream());
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"uploaded_file\";filename=\""
+ fileName + "\"" + lineEnd);
dos.writeBytes(lineEnd);
// create a buffer of maximum size
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
buffer = new byte[bufferSize];
// read file and write it into form...
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);
}
// send multipart form data necesssary after file data...
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
// Responses from the server (code and message)
serverResponseCode = conn.getResponseCode();
String serverResponseMessage = conn.getResponseMessage();
Log.i("uploadFile", "HTTP Response is : "
+ serverResponseMessage + ": " + serverResponseCode);
if (serverResponseCode == 200) {
runOnUiThread(new Runnable() {
public void run() {
String msg = "File Upload Completed.\n\n See uploaded file here : \n\n"
+ " F:/wamp/wamp/www/uploads";
messageText.setText(msg);
Toast.makeText(MainActivity.this,
"File Upload Complete.", Toast.LENGTH_SHORT)
.show();
}
});
}
// close the streams //
fileInputStream.close();
dos.flush();
dos.close();
} catch (MalformedURLException ex) {
dialog.dismiss();
ex.printStackTrace();
runOnUiThread(new Runnable() {
public void run() {
messageText
.setText("MalformedURLException Exception : check script url.");
Toast.makeText(MainActivity.this,
"MalformedURLException", Toast.LENGTH_SHORT)
.show();
}
});
Log.e("Upload file to server", "error: " + ex.getMessage(), ex);
} catch (Exception e) {
dialog.dismiss();
e.printStackTrace();
runOnUiThread(new Runnable() {
public void run() {
messageText.setText("Got Exception : see logcat ");
Toast.makeText(MainActivity.this,
"Got Exception : see logcat ",
Toast.LENGTH_SHORT).show();
}
});
Log.e("Upload file to server Exception",
"Exception : " + e.getMessage(), e);
}
dialog.dismiss();
return serverResponseCode;
} // End else block
}
}
-将图像上传到服务器并存储字符串路径(PHP端):
$file_path = "uploads/";
$file_path = $file_path . basename( $_FILES['uploaded_file']['name']);
if(move_uploaded_file($_FILES['uploaded_file']['tmp_name'], $file_path)) {
// replace $host,$username,$password,$dbname with real info
$link=mysqli_connect($host,$username,$password,$dbname);
mysqli_query($link,"INSERT INTO `files` (filename,path) VALUES ('".$_FILES['uploaded_file']['tmp_name']."','".$file_path."')") or trigger_error($link->error."[ $sql]");
mysqli_close($link);
} else{
echo "fail";
2.)对于插入EditText值从Android到MySQL数据库我有以下代码:
-MySQL数据库表插入值(JAVA端):
public class MainActivity extends Activity {
String name;
String id;
InputStream is=null;
String result=null;
String line=null;
int code;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final EditText e_id=(EditText) findViewById(R.id.editText1);
final EditText e_name=(EditText) findViewById(R.id.editText2);
Button insert=(Button) findViewById(R.id.button1);
insert.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
id = e_id.getText().toString();
name = e_name.getText().toString();
insert();
}
});
}
public void insert()
{
ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("id",id));
nameValuePairs.add(new BasicNameValuePair("name",name));
try
{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://10.0.2.2/insert.php");
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
Log.e("pass 1", "connection success ");
}
catch(Exception e)
{
Log.e("Fail 1", e.toString());
Toast.makeText(getApplicationContext(), "Invalid IP Address",
Toast.LENGTH_LONG).show();
}
try
{
BufferedReader reader = new BufferedReader
(new InputStreamReader(is,"iso-8859-1"),8);
StringBuilder sb = new StringBuilder();
while ((line = reader.readLine()) != null)
{
sb.append(line + "\n");
}
is.close();
result = sb.toString();
Log.e("pass 2", "connection success ");
}
catch(Exception e)
{
Log.e("Fail 2", e.toString());
}
try
{
JSONObject json_data = new JSONObject(result);
code=(json_data.getInt("code"));
if(code==1)
{
Toast.makeText(getBaseContext(), "Inserted Successfully",
Toast.LENGTH_SHORT).show();
}
else
{
Toast.makeText(getBaseContext(), "Sorry, Try Again",
Toast.LENGTH_LONG).show();
}
}
catch(Exception e)
{
Log.e("Fail 3", e.toString());
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
}
-将值插入MySQL数据库表(PHP端):
<?php
$host='127.0.0.1';
$uname='root';
$pwd='password';
$db="android";
$con = mysql_connect($host,$uname,$pwd) or die("connection failed");
mysql_select_db($db,$con) or die("db selection failed");
$id=$_REQUEST['id'];
$name=$_REQUEST['name'];
$flag['code']=0;
if($r=mysql_query("insert into sample values('$id','$name') ",$con))
{
$flag['code']=1;
echo"hi";
}
print(json_encode($flag));
mysql_close($con);
?>
我如何组合1。)和2。)?我试了将近三天,但它根本不起作用,我绝望了:S.希望有人能帮忙。
提前谢谢。
在同一活动中,首先通过在两个不同的函数中调用这两个代码文件,然后在上载图像文件时,使用子字符串函数从imagepath字符串中获取图像名称,并将该图像名称与JSON数据一起发送到服务器端,同时以ip_地址/image_upload_文件夹/imagename格式插入存储该图像路径。
我用Android将图像上传到Firebase存储。我有一个应用程序,它可以在抓拍照片后立即发送图像。 但我想创建一个应用程序,在发送前在ImageView中显示照片。我想在照片下面写一些文字,然后把它们都上传。 我应该使用哪些工具来执行此操作?我要从存储器下载毕加索。但我无法管理如何在捕获照片后显示ImageView,然后编写一些文本(如名称或描述)并将其发送给Firebase。第二个挑战是如何
这几天来,我一直对这个问题耿耿于怀,似乎在任何地方都找不到正确的答案。任何帮助都将不胜感激! 最终目标:让用户上传最多4张图片。检查错误。使用文件名上传图片到文件系统中的用户文件夹中(mkdir如果不存在),将文件路径存储在SQL表的相应部分。 我不断地改变事情以获得部分结果,现在我已经把自己编码成了一个大习惯。如果您有任何问题,请告诉我,甚至可以建议一个更好的方法来实现最终目标。 谢谢!! 从框
问题内容: 我要上传图像并将其保存在服务器中。我上传了图像并获得了预览,但是我被困在将图像发送到服务器上。我想使用角度服务将此图像发送到服务器。 这是HTML代码 这是指令 问题答案: 假设您在后端中期望Multipart,这是一段对我有用的代码。 这是一个jsfiddle。 请注意 以下部分: 是一些Angular魔术,为了使$ http解析FormData并找到正确的内容类型,等等。
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我在我的屏幕上有四个图像视图,从相机中捕获图像并显示在其中,现在我想将这些图像上传到服务器上。因此,我使用了下面的代码来获取它们的路径,但它通过了异常。是否有可能从摄像机拍摄的图像视图将图像上传到服务器(无需将图像存储到内存中)。
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