上传图片到服务器 [英] Upload picture to server
本文介绍了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GOOGLE了很多，但它不工作。我发现很多网站的信息，但所有的网站我的应用程序崩溃。我想开图片：lastfile.png。它存储在内部存储，所以我用openFileInput打开它（lastfile.png）;
我这样做是在一个AsyncTask的。
这是我的code到目前为止：
类PostTask扩展的AsyncTask＆LT;字符串，字符串，字符串＆GT; {
@覆盖
保护字符串doInBackground（字符串... URI）{
如果（图片== NULL）{
HttpClient的HttpClient的=新DefaultHttpClient（）;
HTT presponse响应;
字符串responseString = NULL;
尝试 {
响应= httpclient.execute（新HTTPGET（URI [0]））;
状态行状态行= response.getStatusLine（）;
如果（statusLine.getStatus code（）== HttpStatus.SC_OK）{
ByteArrayOutputStream OUT =新ByteArrayOutputStream（）;
。response.getEntity（）的writeTo（出）;
out.close（）;
responseString = out.toString（）;
} 其他{
。response.getEntity（）的getContent（）close（）方法。
抛出新IOException异常（statusLine.getReasonPhrase（））;
}
}赶上（ClientProtocolException E）{
Toast.makeText（AddStoryActivity.this，getResources（）的getString（R.string.error），Toast.LENGTH_LONG。）.show（）;
e.printStackTrace（）;
}赶上（IOException异常E）{
Toast.makeText（AddStoryActivity.this，getResources（）的getString（R.string.error），Toast.LENGTH_LONG。）.show（）;
e.printStackTrace（）;
}
返回responseString;
} 其他 {
/ *图片上传* /
}
返回 ;
}
@覆盖
保护无效onPostExecute（字符串结果）{
super.onPostExecute（结果）;
progress.cancel（）;
Toast.makeText（getApplicationContext（），结果，Toast.LENGTH_LONG）.show（）;
}
}
解决方案
我做的是COM preSS到一个字符串类型的IMG然后将其发送的名称值对，然后去code的方式使用PHP服务器端的字符串。
位图bitmapOrg = BitmapFactory.de codeResource（你的形象路径上的设备）;
ByteArrayOutputStream宝=新ByteArrayOutputStream（）;
bitmapOrg.com preSS（Bitmap.Com pressFormat.JPEG，90，宝）;
byte []的BA = bao.toByteArray（）;
字符串BA1 = Base64.en codeToString（BA，0）;
ArrayList的＆LT;的NameValuePair＆GT; namevaluepairs中=新
ArrayList的＆LT;的NameValuePair＆GT;（）;
nameValuePairs.add（新BasicNameValuePair（形象，BA1））;
尝试{
HttpClient的HttpClient的=新DefaultHttpClient（）;
HttpPost httppost =新HttpPost（HTTP：//your_url/sink.php）;
httppost.setEntity（新UrlEn codedFormEntity（namevaluepairs中））;
HTT presponse响应= httpclient.execute（httppost）;
HttpEntity实体= response.getEntity（）;
是= entity.getContent（）;
}赶上（例外五）{
Log.e（log_tag，错误的HTTP连接+ e.toString（））;
}
SINK.PHP
＆LT; PHP
$基地= $ _ REQUEST ['形象'];
$名称= $ _ REQUEST ['名称'];
回声$基地;
// EN BASE64 codeD UTF-8字符串
$二进制= base64_de code（$基地）;
//二进制，UTF-8字节
标题（内容类型：位图;字符集= UTF-8）;
$文件= FOPEN（名字，世行）;
FWRITE（$文件，$二）;
fclose函数（$文件）;
回声'＆LT; IMG SRC ='+名字+'＆GT;';
？>
I've googled a lot but it doesn't work. I found a lot of sites with information but by all the sites my app crashed. The picture that I want to open is: "lastfile.png". It is stored in internal storage so I open it with openFileInput("lastfile.png");
I do it in in an AsyncTask.
This is my code so far:
class PostTask extends AsyncTask<String, String, String>{
@Override
protected String doInBackground(String... uri) {
if(picture == null) {
HttpClient httpclient = new DefaultHttpClient();
HttpResponse response;
String responseString = null;
try {
response = httpclient.execute(new HttpGet(uri[0]));
StatusLine statusLine = response.getStatusLine();
if(statusLine.getStatusCode() == HttpStatus.SC_OK){
ByteArrayOutputStream out = new ByteArrayOutputStream();
response.getEntity().writeTo(out);
out.close();
responseString = out.toString();
} else{
response.getEntity().getContent().close();
throw new IOException(statusLine.getReasonPhrase());
}
} catch (ClientProtocolException e) {
Toast.makeText(AddStoryActivity.this, getResources().getString(R.string.error), Toast.LENGTH_LONG).show();
e.printStackTrace();
} catch (IOException e) {
Toast.makeText(AddStoryActivity.this, getResources().getString(R.string.error), Toast.LENGTH_LONG).show();
e.printStackTrace();
}
return responseString;
} else {
/* IMAGE UPLOAD */
}
return "";
}
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
progress.cancel();
Toast.makeText(getApplicationContext(), result, Toast.LENGTH_LONG).show();
}
}
解决方案
The way I did it was to compress the img in to a type of string then send it as name value pair then decode the string on server end using php.
Bitmap bitmapOrg = BitmapFactory.decodeResource("your image path on device");
ByteArrayOutputStream bao = new ByteArrayOutputStream();
bitmapOrg.compress(Bitmap.CompressFormat.JPEG, 90, bao);
byte [] ba = bao.toByteArray();
String ba1= Base64.encodeToString(ba, 0);
ArrayList<NameValuePair> nameValuePairs = new
ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("image",ba1));
try{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://your_url/sink.php");
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
}catch(Exception e){
Log.e("log_tag", "Error in http connection "+e.toString());
}
SINK.PHP
<?php
$base=$_REQUEST['image'];
$name=$_REQUEST['name'];
echo $base;
// base64 encoded utf-8 string
$binary=base64_decode($base);
// binary, utf-8 bytes
header('Content-Type: bitmap; charset=utf-8');
$file = fopen(name, 'wb');
fwrite($file, $binary);
fclose($file);
echo '<img src='+name+'>';
?>
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