本文将为您提供关于照片未正确上传GCSAppEngine的详细介绍，我们还将为您解释照片未能成功上传的相关知识，同时，我们还将为您提供关于android–使用谷歌app-engine的GCM服务器、a

本文将为您提供关于照片未正确上传GCS App Engine的详细介绍，我们还将为您解释照片未能成功上传的相关知识，同时，我们还将为您提供关于android – 使用谷歌app-engine的GCM服务器、android – 关于Appengine的GCM XMPP？、android – 用于聊天应用程序的GCM和App Engine、angularjs – ZingChart条形图未正确生成的实用信息。

• 照片未正确上传GCS App Engine（照片未能成功上传）
• android – 使用谷歌app-engine的GCM服务器
• android – 关于Appengine的GCM XMPP？
• android – 用于聊天应用程序的GCM和App Engine
• angularjs – ZingChart条形图未正确生成

照片未正确上传GCS App Engine（照片未能成功上传）

我正在上载我的upload.java servlet，以将.jpg存储到GCS。

我使用GCS客户端库而不是Google Cloud Storage API。但是我
找不到要上传照片的任何示例（doPost方法），因此我的代码无法正常工作…

发送成功（我可以在GCS上看到我的照片，大小为465.24KB），
但是当我尝试查看此照片时，我无法：

Here is my code:

upload.java servlet public void doPost(HttpServletRequest request,
HttpServletResponse response) throws IOException {

            //Read the file contents from the input stream            GcsService gcsService = GcsServiceFactory.createGcsService();            GcsFilename filename = new GcsFilename(BUCKETNAME, FILENAME);            GcsFileOptions options = new GcsFileOptions.Builder()                .mimeType("image/jpeg")                .acl("public-read")                .addUserMetadata("myfield1", "my field value")                .build();            GcsOutputChannel writeChannel = gcsService.createOrReplace(filename, options);            InputStream is = request.getInputStream();            try {                copy(is, Channels.newOutputStream(writeChannel));            } finally {                writeChannel.close();                is.close();            }        }      private void copy(InputStream input, OutputStream output) throws IOException {            byte[] buffer = new byte[256];            int bytesRead = input.read(buffer);            while (bytesRead != -1) {                output.write(buffer, 0, bytesRead);                bytesRead = input.read(buffer);            }        }

android code (To send photo)

HttpPost httppost = new HttpPost("adress.appengine.com/upload");                //On créé un fichier File qui contient la photo que l''on vient de prendre (Accessible via son Path)                 File f = new File(AccueilActivity.fileUri.getPath());                //On créé un FileBody (Contenu de notre requête http POST) contenant notre photo                FileBody fileBody = new FileBody(f);                //Permet de créer une requête avec plusieurs partie                MultipartEntity reqEntity = new MultipartEntity();                //On ajoute notre photo avec le mot clé file.                reqEntity.addPart("file", fileBody);                //On set notre requête HTTP                httppost.setEntity(reqEntity);                //On execute notre requete HTTP Post, et on appele du coup automatiquement le servlet "uploaded",                //et on met la réponse dans response.                HttpResponse response = httpClient.execute(httppost);                //Ici on récupère l''entête de notre réponse HTTP (Tout sauf le code réponse)                HttpEntity urlEntity = response.getEntity();

Thanks in advance !

答案1

我终于（自己）找到了解决我问题的方法！我为那= D感到骄傲

The code for Android:

//Actions à réaliser en fond        protected String doInBackground(String... params) {            //Création d''une requête HTTP            HttpClient httpClient = new DefaultHttpClient();            //On construit notre adresse Post grâce à ce que l''on vient de récupérer            HttpPost httppost = new HttpPost("http://your_id.appspot.com/upload");            //On créé un fichier File qui contient la photo que l''on vient de prendre (Accessible via son Path)             File f = new File(AccueilActivity.fileUri.getPath());            //Et là on essaie !            try {                 MultipartEntityBuilder entityBuilder = MultipartEntityBuilder.create();                 entityBuilder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);                  entityBuilder.addBinaryBody("Photo_a_uploader", f);                              entityBuilder.addTextBody("Type", "Type que l''utilisateur a choisi");                 httppost.setEntity(entityBuilder.build());                 HttpResponse response = httpClient.execute(httppost);        } catch (ClientProtocolException e) {            // Si on tombe dans le catch, on set notre variable à 2.                    e.printStackTrace();        } catch (IOException e) {            // Si on tombe dans le catch, on set notre variable à 2.                        e.printStackTrace();        }

The code App Engine

 @Override          public void doPost(HttpServletRequest req, HttpServletResponse res)              throws ServletException, IOException {            //Read the file contents from the input stream            GcsService gcsService = GcsServiceFactory.createGcsService();            GcsFilename filename = new GcsFilename(BUCKETNAME, FILENAME);            GcsFileOptions options = new GcsFileOptions.Builder()                    .mimeType("image/jpg")                    .acl("public-read")                    .addUserMetadata("myfield1", "my field value")                    .build();            GcsOutputChannel writeChannel = gcsService.createOrReplace(filename, options);            ServletFileUpload upload = new ServletFileUpload();            res.setContentType("text/plain");            try {                FileItemIterator iterator = upload.getItemIterator(req);                    while (iterator.hasNext()) {                        FileItemStream item = iterator.next();                        InputStream stream = item.openStream();                        if (item.isFormField()) {                          log.warning("Champs texte avec id: " + item.getFieldName()+", et nom: "+Streams.asString(stream));                        } else {                          log.warning("Nous avons un fichier à uploader : " + item.getFieldName() +                                      ", appelé = " + item.getName());                          // You now have the filename (item.getName() and the                          // contents (which you can read from stream). Here we just                          // print them back out to the servlet output stream, but you                          // will probably want to do something more interesting (for                          // example, wrap them in a Blob and commit them to the                          // datastore).                          // Open a channel to write to it                          byte[] bytes = ByteStreams.toByteArray(stream);                          try {                                writeChannel.write(ByteBuffer.wrap(bytes));                          } finally {                                writeChannel.close();                                stream.close();                          }                                }                          }                } catch (FileUploadException e) {                    // TODO Auto-generated catch block                    e.printStackTrace();                }         }

我希望这些示例可以帮助您使用App Engine和Google云存储！

android – 使用谷歌app-engine的GCM服务器

android – 关于Appengine的GCM XMPP？

android – 用于聊天应用程序的GCM和App Engine

angularjs – ZingChart条形图未正确生成

<zingchart id="timesheet-bar-chart" zc-json="myObj"></zingchart>

$scope.myObj = {
  "type": "bar","utc": true,"plotarea":{
      "margin":'dynamic'
    },"plot":{
    "stacked":true,"stack-type":"normal" /* Optional specification */
  },"scaleX":{
      "transform":{
        "type":"date","all":"%d %M","item": {
          "visible":false
        }
      },},"series":[{ 
      "values": $scope.barValues,"backgroundColor":"#f15662"
    }]
  };
zingchart.render({ 
id : 'timesheet-bar-chart',height: 400,width: "100%"
});

var myConfig = {
  "type": "bar","scaleX":{
   "zooming":true,"transform":{
        "type":"date","all":"%d %M %Y<br> %h:%i:%s","series":[{ 
      "values": [[1478025000000,30]],"backgroundColor":"#f15662"
    }]
  };

zingchart.render({ 
	id: 'myChart',data: myConfig,height: '100%',width: '100%' 
});

html,body {
	height:100%;
	width:100%;
	margin:0;
	padding:0;
}
#myChart {
	height:100%;
	width:100%;
	min-height:150px;
}

<!DOCTYPE html>
<html>
	<head>
		<script src= "https://cdn.zingchart.com/zingchart.min.js"></script>
	</head>
	<body>
		<div id="myChart"></div>
	</body>
</html>

var myConfig = {
  "type": "bar","plot":{
    "bar-width": 30,"stacked":true,body {
	height:100%;
	width:100%;
	margin:0;
	padding:0;
}
#myChart {
	height:100%;
	width:100%;
	min-height:150px;
}

<!DOCTYPE html>
<html>
	<head>
	<!--Assets will be injected here on compile. Use the assets button above-->
		<script src= "https://cdn.zingchart.com/zingchart.min.js"></script>
	</head>
	<body>
		<div id="myChart"></div>
	</body>
</html>

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