如何从GALLARY上传图片到服务器？ [英] How to upload image from gallary to server?
本文介绍了如何从GALLARY上传图片到服务器？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我想从我的画廊浏览图片，并试图在服务器发送和下面这个教程<一个href=\"http://androidexample.com/Upload_File_To_Server_-_Android_Example/index.php?view=article_discription&aid=83&aaid=106\" rel=\"nofollow\">http://androidexample.com/Upload_File_To_Server_-_Android_Example/index.php?view=article_discription&aid=83&aaid=106使用JSON但每当我试图把它上传显示文件上传全成，但是当我点击浏览按钮我GALLARY显示什么都没有，所以我需要首先从画廊浏览，并显示在我的ImageView的图像，然后上传successfullcan任何机构告诉我是什么问题呢？
UploadToServer：
公共类UploadToServer延伸活动{
TextView中MessageText中;
按钮uploadButton;
INT serverResponse code = 0;
ProgressDialog对话框= NULL;
字符串upLoadServerUri = NULL;/********** 文件路径 *************/
最后弦乐uploadFilePath =到/ mnt / SD卡/图片/;
最后弦乐uploadFileName =service_lifecycle.png;
私有静态诠释RESULT_LOAD_IMAGE = 1;
@覆盖
公共无效的onCreate（捆绑savedInstanceState）{
super.onCreate（savedInstanceState）;
的setContentView（R.layout.activity_upload_to_server）;
ImageView的buttonLoadImage =（ImageView的）findViewById（R.id.buttonLoadPicture）;
buttonLoadImage.setOnClickListener（新View.OnClickListener（）{ @覆盖
公共无效的onClick（查看为arg0）{ 意图I =新意图（
Intent.ACTION_PICK，
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI）; startActivityForResult（ⅰ，RESULT_LOAD_IMAGE）;
}
}）;
uploadButton =（按钮）findViewById（R.id.uploadButton）;
MessageText中=（的TextView）findViewById（R.id.messageText）; messageText.setText（上传文件路径： - 到/ mnt / SD卡/图片/+ uploadFileName）; / ************* PHP脚本路径**************** /
upLoadServerUri =http://www.androidexample.com/media/UploadToServer.php; uploadButton.setOnClickListener（新OnClickListener（）{
@覆盖
公共无效的onClick（视图v）{ 对话框= ProgressDialog.show（UploadToServer.this，，上传文件...，真正的）; 新主题（新的Runnable接口（）{
公共无效的run（）{
runOnUiThread（新的Runnable（）{
公共无效的run（）{
messageText.setText（上传开始......）;
}
}）; uploadFile（uploadFilePath ++ uploadFileName）; }
}）。开始（）;
}
}）;
}
@覆盖
保护无效的onActivityResult（INT申请code，INT结果code，意图数据）{
// TODO自动生成方法存根
如果（要求code == RESULT_LOAD_IMAGE＆放大器;＆安培;结果code == RESULT_OK＆放大器;＆安培;！NULL =数据）{
乌里selectedImageUri = data.getData（）;
字符串TEMPPATH =的getPath（selectedImageUri，这一点）; //添加此 ImageView的ImageView的=（ImageView的）findViewById（R.id.imgView）;
imageView.setImageBitmap（BitmapFactory.de codeFILE（TEMPPATH））;
}
}
私人字符串的getPath（URI URI，UploadToServer uploadToServer）{
如果（URI == NULL）{
返回null;
}
的String [] =投影{MediaStore.Images.Media.DATA};
光标光标= getContentResolver（）查询（URI，投影，NULL，NULL，NULL）;
如果（指针！= NULL）{
INT与Column_Index =光标
.getColumnIndexOrThrow（MediaStore.Images.Media.DATA）;
cursor.moveToFirst（）;
返回cursor.getString（Column_Index中）;
}
返回uri.getPath（）;
}
公众诠释uploadFile（字符串sourceFileUri）{
字符串文件名= sourceFileUri; HttpURLConnection的康恩= NULL;
DataOutputStream类DOS = NULL;
字符串lineEnd =\\ r \\ n;
串twoHyphens = - ;
字符串边界=*****;
INT读取动作，方bytesAvailable，缓冲区大小;
字节[]缓冲区;
INT MAXBUFFERSIZE = 1 * 1024 * 1024;
文件的资源文件=新的文件（sourceFileUri）; 如果（！sourceFile.isFile（））{ dialog.dismiss（）; Log.e（一个UploadFile，源文件不存在
+ uploadFilePath ++ uploadFileName）; runOnUiThread（新的Runnable（）{
公共无效的run（）{
messageText.setText（源文件不存在
+ uploadFilePath ++ uploadFileName）;
}
}）; 返回0; }
其他
{
尝试{ //打开一个URL连接到这个Servlet
的FileInputStream的FileInputStream =新的FileInputStream（的资源文件）;
网址URL =新的URL（upLoadServerUri）; //打开HTTP连接的URL
康恩=（HttpURLConnection类）url.openConnection（）;
conn.setDoInput（真）; //允许输入
conn.setDoOutput（真）; //允许输出
conn.setUseCaches（假）; //不要使用缓存副本
conn.setRequestMethod（POST）;
conn.setRequestProperty（连接，保持活动）;
conn.setRequestProperty（ENCTYPE，多部分/表单数据）;
conn.setRequestProperty（内容类型，的multipart / form-data的;边界=+边界）;
conn.setRequestProperty（uploaded_file，文件名）; DOS =新的DataOutputStream类（conn.getOutputStream（））; dos.writeBytes（twoHyphens +边界+ lineEnd）;
dos.writeBytes（内容处置：表格数据;名称= \\uploaded_file \\;文件名= \\
+文件名+\\+ lineEnd）; dos.writeBytes（lineEnd）; //创建最大大小的缓冲区
参考bytesAvailable = fileInputStream.available（）; BUFFERSIZE = Math.min（方bytesAvailable，MAXBUFFERSIZE）;
缓冲区=新的字节[缓冲区大小] //读取文件，并将其写入形式...
读取动作= fileInputStream.read（缓冲液，0，缓冲区大小）; 而（读取动作大于0）{ dos.write（缓冲液，0，缓冲区大小）;
参考bytesAvailable = fileInputStream.available（）;
BUFFERSIZE = Math.min（方bytesAvailable，MAXBUFFERSIZE）;
读取动作= fileInputStream.read（缓冲液，0，缓冲区大小）; } //发送文件数据后necesssary多部分的表单数据...
dos.writeBytes（lineEnd）;
dos.writeBytes（twoHyphens +边界+ twoHyphens + lineEnd）; //服务器的响应（code和消息）
serverResponse code = conn.getResponse code（）;
串serverResponseMessage = conn.getResponseMessage（）; Log.i（一个UploadFile，HTTP响应是：
+ serverResponseMessage +：+ serverResponse code）; 如果（serverResponse code == 200）{ runOnUiThread（新的Runnable（）{
公共无效的run（）{ 弦乐味精=文件上传完成\\ n \\ n看到这里上传的文件：\\ n \\ n
+http://www.androidexample.com/media/uploads/
+ uploadFileName; messageText.setText（MSG）;
Toast.makeText（UploadToServer.this，文件上传完成。
Toast.LENGTH_SHORT）.show（）;
}
}）;
} //关闭流//
fileInputStream.close（）;
dos.flush（）;
dos.close（）; }赶上（MalformedURLException的前）{ dialog.dismiss（）;
ex.printStackTrace（）; runOnUiThread（新的Runnable（）{
公共无效的run（）{
messageText.setText（MalformedURLException的例外情况：检查脚本网址。）;
Toast.makeText（UploadToServer.thisMalformedURLException的，Toast.LENGTH_SHORT）.show（）;
}
}）; Log.e（上传文件到服务器，错误：+ ex.getMessage（），除息）;
}赶上（例外五）{ dialog.dismiss（）;
e.printStackTrace（）; runOnUiThread（新的Runnable（）{
公共无效的run（）{
messageText.setText（得到例外：看到logcat的）;
Toast.makeText（UploadToServer.this，得到了异常：看到logcat的
Toast.LENGTH_SHORT）.show（）;
}
}）;
Log.e（上传文件到服务器异常，异常
+ e.getMessage（），E）;
}
dialog.dismiss（）;
返回serverResponse code; } //结束else块
}
}
解决方案
您可以使用多图片上传这样的。
- 创建的AsyncTask
ArrayList的productFiles =新的ArrayList（）;
类UploadImageTask扩展的AsyncTask＆LT;字符串，整数，字符串＆GT;
{
ProgressDialog对话框;
@覆盖
保护字符串doInBackground（字符串... PARAMS）
{
INT isCover = 0;
串gal_image =;
的for（int i = 0; I＆LT; productFiles.size（）;我++）
{
如果（我== 0）
isCover = 1;
其他
isCover = 0;
publishProgress第（i + 1）;
字符串s = HelperHttp.uploadFile（productFiles.get（ⅰ），
Constants.BASE_URL +send_image.php，则params [0]，
isCover +）;
尝试{
JSONObject的工作=新的JSONObject（S）;
如果（job.optInt（身份）== 1）{
Helper.Log（上传成功，I +完成）;
如果（gal_image.equals（））
gal_image = job.optString（gal_image）;
}
}赶上（JSONException E）{
e.printStackTrace（）;
}
}
返回gal_image;
}@覆盖
在preExecute保护无效（）{
super.on preExecute（）;
对话框= DialogManager.getProgressDialog（SellActivity.this）;
dialog.setMessage（上传1+ productFiles.size（）+图像（S））;
}@覆盖
保护无效onPostExecute（最后弦乐结果）{
super.onPostExecute（结果）;
dialog.dismiss（）;
}
}
2。
与方法上传文件如下创建Helper类
公共静态字符串uploadFile（档案文件，URL字符串，字符串的productId，字符串isCover）
{
StringBuffer的数据=新的StringBuffer（）;
HttpPost httpost =新HttpPost（URL）;
Helper.Log（上传文件，网址）;
MultipartEntity实体=新MultipartEntity（）;
entity.addPart（一个UploadFile，新FileBody（文件））;
尝试
{
entity.addPart（txtProductId，新StringBody（productId参数））;
}
赶上（UnsupportedEncodingException E1）
{
e1.printStackTrace（）;
}
httpost.setEntity（实体）;
HTT presponse响应;
尝试{
响应= getThreadSafeClient（）执行（httpost）。
HttpEntity ENTITY2 = response.getEntity（）;
InputStream为= entity2.getContent（）;
读者的BufferedReader =新的BufferedReader（新的InputStreamReader（是），8192）;
串线= NULL;
而（（行= reader.readLine（））！= NULL）
{
data.append（线）;
}
。response.getEntity（）consumeContent（）;
Helper.Log（回应==＆gt;中，data.toString（）+）;
返回data.toString（）;
}赶上（ClientProtocolException E）{
e.printStackTrace（）;
}赶上（IOException异常五）{
e.printStackTrace（）;
}
返回;
}
您还可以添加参数的要求。
要添加参数，使用以下code
entity.addPart（钥匙，值）;
I am trying to browse image from my gallery and trying to send it in server and following this tutorial http://androidexample.com/Upload_File_To_Server_-_Android_Example/index.php?view=article_discription&aid=83&aaid=106 using json but whenever I am trying to upload it shows file uploaded successfull,but when i click on browse button my gallary display nothing,so i need to first browse from gallery and show that image in my imageview and then upload successfullcan any body tell me what is problem?
UploadToServer :
public class UploadToServer extends Activity {
TextView messageText;
Button uploadButton;
int serverResponseCode = 0;
ProgressDialog dialog = null;
String upLoadServerUri = null;
/********** File Path *************/
final String uploadFilePath = "/mnt/sdcard/Pictures/";
final String uploadFileName = "service_lifecycle.png";
private static int RESULT_LOAD_IMAGE = 1;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_upload_to_server);
ImageView buttonLoadImage = (ImageView) findViewById(R.id.buttonLoadPicture);
buttonLoadImage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
Intent i = new Intent(
Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(i, RESULT_LOAD_IMAGE);
}
});
uploadButton = (Button)findViewById(R.id.uploadButton);
messageText = (TextView)findViewById(R.id.messageText);
messageText.setText("Uploading file path :- '/mnt/sdcard/Pictures/"+uploadFileName);
/************* Php script path ****************/
upLoadServerUri = "http://www.androidexample.com/media/UploadToServer.php";
uploadButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
dialog = ProgressDialog.show(UploadToServer.this, "", "Uploading file...", true);
new Thread(new Runnable() {
public void run() {
runOnUiThread(new Runnable() {
public void run() {
messageText.setText("uploading started.....");
}
});
uploadFile(uploadFilePath + "" + uploadFileName);
}
}).start();
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null != data) {
Uri selectedImageUri = data.getData();
String tempPath = getPath(selectedImageUri, this);
//add this
ImageView imageView = (ImageView) findViewById(R.id.imgView);
imageView.setImageBitmap(BitmapFactory.decodeFile(tempPath ));
}
}
private String getPath(Uri uri, UploadToServer uploadToServer) {
if( uri == null ) {
return null;
}
String[] projection = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(uri, projection, null, null, null);
if( cursor != null ){
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
return uri.getPath();
}
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 :"
+uploadFilePath + "" + uploadFileName);
runOnUiThread(new Runnable() {
public void run() {
messageText.setText("Source File not exist :"
+uploadFilePath + "" + uploadFileName);
}
});
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"
+" http://www.androidexample.com/media/uploads/"
+uploadFileName;
messageText.setText(msg);
Toast.makeText(UploadToServer.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(UploadToServer.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(UploadToServer.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
}
}
解决方案
You can use multipart image upload like this.
- create AsyncTask
ArrayList productFiles = new ArrayList();
class UploadImageTask extends AsyncTask<String, Integer, String>
{
ProgressDialog dialog;
@Override
protected String doInBackground(String... params)
{
int isCover = 0;
String gal_image = "";
for (int i = 0; i < productFiles.size(); i++)
{
if (i == 0)
isCover = 1;
else
isCover = 0;
publishProgress(i + 1);
String s = HelperHttp.uploadFile(productFiles.get(i),
Constants.BASE_URL + "send_image.php", params[0],
isCover + "");
try {
JSONObject job = new JSONObject(s);
if (job.optInt("status") == 1) {
Helper.Log("Upload success", i + " done");
if (gal_image.equals(""))
gal_image = job.optString("gal_image");
}
} catch (JSONException e) {
e.printStackTrace();
}
}
return gal_image;
}
@Override
protected void onPreExecute() {
super.onPreExecute();
dialog = DialogManager.getProgressDialog(SellActivity.this);
dialog.setMessage("uploading 1 of " + productFiles.size()+ " image(s)");
}
@Override
protected void onPostExecute(final String result) {
super.onPostExecute(result);
dialog.dismiss();
}
}
2. Create Helper class with method upload file as follow
public static String uploadFile(File file, String url, String productId,String isCover)
{
StringBuffer data = new StringBuffer();
HttpPost httpost = new HttpPost(url);
Helper.Log("Upload file", url);
MultipartEntity entity = new MultipartEntity();
entity.addPart("uploadfile", new FileBody(file));
try
{
entity.addPart("txtProductId", new StringBody(productId));
}
catch (UnsupportedEncodingException e1)
{
e1.printStackTrace();
}
httpost.setEntity(entity);
HttpResponse response;
try {
response = getThreadSafeClient().execute(httpost);
HttpEntity entity2 = response.getEntity();
InputStream is = entity2.getContent();
BufferedReader reader = new BufferedReader( new InputStreamReader(is), 8192);
String line = null;
while ((line = reader.readLine()) != null)
{
data.append(line);
}
response.getEntity().consumeContent();
Helper.Log("Response==>", data.toString() + "");
return data.toString();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return "";
}
You can also add parameter to request. To add parameter use following code
entity.addPart("Key", value);
这篇关于如何从GALLARY上传图片到服务器？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
查看全文
