我想创建一个拍照并将其发送到在线服务器的应用。我已经阅读了很多教程和文章，到目前为止这是我的代码：
if (!(/(.)\1{2}/.test(string))){
console.log('there are no running 3 chars occur in the string');
} else {
console.log('there are 3 running same char occur in the string');
}
MultipartEntity.java
import android.app.Activity;
import android.content.Intent;
import android.content.res.Configuration;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.text.SimpleDateFormat;
import java.util.Date;
public class MainActivity extends Activity implements OnClickListener {
private Button mTakePhoto;
private ImageView mImageView;
private static final String TAG = "upload";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mTakePhoto = (Button) findViewById(R.id.take_photo);
mImageView = (ImageView) findViewById(R.id.imageview);
mTakePhoto.setOnClickListener(this);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
int id = v.getId();
switch (id) {
case R.id.take_photo:
takePhoto();
break;
}
}
private void takePhoto() {
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, 1);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
Log.i(TAG, "onActivityResult: " + this);
if (requestCode == REQUEST_TAKE_PHOTO && resultCode == Activity.RESULT_OK) {
Bitmap photo = (Bitmap) data.getExtras().get("data");
mImageView.setImageBitmap(photo);
try {
sendPhoto(photo);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
private void sendPhoto(Bitmap bitmap) throws Exception {
new UploadTask().execute(bitmap);
}
private class UploadTask extends AsyncTask<Bitmap, Void, Void> {
protected Void doInBackground(Bitmap... bitmaps) {
if (bitmaps[0] == null)
return null;
setProgress(0);
Bitmap bitmap = bitmaps[0];
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, 100, stream); // convert Bitmap to ByteArrayOutputStream
InputStream in = new ByteArrayInputStream(stream.toByteArray()); // convert ByteArrayOutputStream to ByteArrayInputStream
DefaultHttpClient httpclient = new DefaultHttpClient();
try {
HttpPost httppost = new HttpPost(
"http://xxxx/photo.php"); // server
MultipartEntity reqEntity = new MultipartEntity();
reqEntity.addPart("myFile",
System.currentTimeMillis() + ".jpg", in);
httppost.setEntity(reqEntity);
Log.i(TAG, "request " + httppost.getRequestLine());
HttpResponse response = null;
try {
response = httpclient.execute(httppost);
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
if (response != null)
Log.i(TAG, "response " + response.getStatusLine().toString());
} finally {
}
} finally {
}
if (in != null) {
try {
in.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if (stream != null) {
try {
stream.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return null;
}
@Override
protected void onProgressUpdate(Void... values) {
// TODO Auto-generated method stub
super.onProgressUpdate(values);
}
@Override
protected void onPostExecute(Void result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
Toast.makeText(MainActivity.this, R.string.uploaded, Toast.LENGTH_LONG).show();
}
}
@Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
Log.i(TAG, "onResume: " + this);
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
// TODO Auto-generated method stub
super.onConfigurationChanged(newConfig);
}
@Override
protected void onSaveInstanceState(Bundle outState) {
// TODO Auto-generated method stub
super.onSaveInstanceState(outState);
Log.i(TAG, "onSaveInstanceState");
}
String mCurrentPhotoPath;
static final int REQUEST_TAKE_PHOTO = 1;
File photoFile = null;
private void dispatchTakePictureIntent() {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
// Ensure that there's a camera activity to handle the intent
if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
// Create the File where the photo should go
File photoFile = null;
try {
photoFile = createImageFile();
} catch (IOException ex) {
// Error occurred while creating the File
}
// Continue only if the File was successfully created
if (photoFile != null) {
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT,
Uri.fromFile(photoFile));
startActivityForResult(takePictureIntent, REQUEST_TAKE_PHOTO);
}
}
}
private File createImageFile() throws IOException {
// Create an image file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
String imageFileName = "JPEG_" + timeStamp + "_";
String storageDir = Environment.getExternalStorageDirectory() + "/picupload";
File dir = new File(storageDir);
if (!dir.exists())
dir.mkdir();
File image = new File(storageDir + "/" + imageFileName + ".jpg");
// Save a file: path for use with ACTION_VIEW intents
mCurrentPhotoPath = image.getAbsolutePath();
Log.i(TAG, "photo path = " + mCurrentPhotoPath);
return image;
}
}
AndroidManifest：
import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.message.BasicHeader;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
public class MultipartEntity implements HttpEntity {
private String boundary = null;
ByteArrayOutputStream out = new ByteArrayOutputStream();
boolean isSetLast = false;
boolean isSetFirst = false;
public MultipartEntity() {
this.boundary = System.currentTimeMillis() + "";
}
public void writeFirstBoundaryIfNeeds(){
if(!isSetFirst){
try {
out.write(("--" + boundary + "\r\n").getBytes());
} catch (final IOException e) {
}
}
isSetFirst = true;
}
public void writeLastBoundaryIfNeeds() {
if(isSetLast){
return ;
}
try {
out.write(("\r\n--" + boundary + "--\r\n").getBytes());
} catch (final IOException e) {
}
isSetLast = true;
}
public void addPart(final String key, final String value) {
writeFirstBoundaryIfNeeds();
try {
out.write(("Content-Disposition: form-data; name=\"" +key+"\"\r\n").getBytes());
out.write("Content-Type: text/plain; charset=UTF-8\r\n".getBytes());
out.write("Content-Transfer-Encoding: 8bit\r\n\r\n".getBytes());
out.write(value.getBytes());
out.write(("\r\n--" + boundary + "\r\n").getBytes());
} catch (final IOException e) {
}
}
public void addPart(final String key, final String fileName, final InputStream fin){
addPart(key, fileName, fin, "application/octet-stream");
}
public void addPart(final String key, final String fileName, final InputStream fin, String type){
writeFirstBoundaryIfNeeds();
try {
type = "Content-Type: "+type+"\r\n";
out.write(("Content-Disposition: form-data; name=\""+ key+"\"; filename=\"" + fileName + "\"\r\n").getBytes());
out.write(type.getBytes());
out.write("Content-Transfer-Encoding: binary\r\n\r\n".getBytes());
final byte[] tmp = new byte[4096];
int l = 0;
while ((l = fin.read(tmp)) != -1) {
out.write(tmp, 0, l);
}
out.flush();
} catch (final IOException e) {
} finally {
try {
fin.close();
} catch (final IOException e) {
}
}
}
public void addPart(final String key, final File value) {
try {
addPart(key, value.getName(), new FileInputStream(value));
} catch (final FileNotFoundException e) {
}
}
@Override
public long getContentLength() {
writeLastBoundaryIfNeeds();
return out.toByteArray().length;
}
@Override
public Header getContentType() {
return new BasicHeader("Content-Type", "multipart/form-data; boundary=" + boundary);
}
@Override
public boolean isChunked() {
return false;
}
@Override
public boolean isRepeatable() {
return false;
}
@Override
public boolean isStreaming() {
return false;
}
@Override
public void writeTo(final OutputStream outstream) throws IOException {
outstream.write(out.toByteArray());
}
@Override
public Header getContentEncoding() {
return null;
}
@Override
public void consumeContent() throws IOException,
UnsupportedOperationException {
if (isStreaming()) {
throw new UnsupportedOperationException(
"Streaming entity does not implement #consumeContent()");
}
}
@Override
public InputStream getContent() throws IOException,
UnsupportedOperationException {
return new ByteArrayInputStream(out.toByteArray());
}
}
和我的php：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.diana.data" >
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
问题是当它到达这一行时它崩溃了，我不知道为什么。
<?php
// Path to move uploaded files
$target_path = "http://xxxx/photos/";
// array for final json respone
$response = array();
// getting server ip address
$server_ip = gethostbyname(gethostname());
// final file url that is being uploaded
$file_upload_url = 'http://' . $server_ip . '/' . 'AndroidFileUpload' . '/' . $target_path;
if (isset($_FILES['image']['name'])) {
$target_path = $target_path . basename($_FILES['image']['name']);
$response['file_name'] = basename($_FILES['image']['name']);
$response['email'] = $email;
try {
// Throws exception incase file is not being moved
if (!move_uploaded_file($_FILES['image']['tmp_name'], $target_path)) {
// make error flag true
$response['error'] = true;
$response['message'] = 'Could not move the file!';
}
// File successfully uploaded
$response['message'] = 'File uploaded successfully!';
$response['error'] = false;
$response['file_path'] = $file_upload_url . basename($_FILES['image']['name']);
} catch (Exception $e) {
// Exception occurred. Make error flag true
$response['error'] = true;
$response['message'] = $e->getMessage();
}
} else {
// File parameter is missing
$response['error'] = true;
$response['message'] = 'Not received any file!F';
}
// Echo final json response to client
echo json_encode($response);
?>
这是我的logcat：
response = httpclient.execute(httppost);
任何想法/提示可能是什么问题？
答案 0 :(得分：4)
正如堆栈跟踪所说：
Caused by: java.lang.SecurityException: Permission denied (missing INTERNET permission?)
您需要在清单文件中添加internet permission。
<uses-permission android:name="android.permission.INTERNET" />
另一个问题是：
Caused by: libcore.io.GaiException: getaddrinfo failed: EAI_NODATA (No address associated with hostname)
您可能需要检查用于发送请求的主机名。 （http://xxxx/photo.php）
答案 1 :(得分：3)
该错误明确告诉您您缺少权限以及互联网权限。
将INTERNET权限添加到清单文件中。
你必须添加这一行：
<uses-permission android:name="android.permission.INTERNET" />
另一个问题可能是您可能错误地添加了权限，或者如果不是，那么您需要检查THIS ANSWER
检查您的主机地址，或者您也可以尝试在互联网下添加此权限：
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>