コード例 #1
0
ファイル: FileContent.java プロジェクト: kramamurthy/GAE
  public void doPost(HttpServletRequest req, HttpServletResponse res)
      throws ServletException, IOException {
    String fileName = null;
    long startTime, endTime;
    String fileContentToDisplay = req.getParameter("FileToDisplay");
    res.getWriter().println("File conetent to be displayed : " + fileContentToDisplay);
    startTime = System.currentTimeMillis();
    // Find if the file is in memcache. If present there is no need to go to blobstore to get the
    // data
    MemcacheService mService = MemcacheServiceFactory.getMemcacheService();
    AppEngineFile readableFile;
    readableFile = (AppEngineFile) mService.get(fileName);

    if (readableFile != null) {
      FileService fService = FileServiceFactory.getFileService();
      res.getWriter().println("File " + fileName + " is present in cache");
      FileReadChannel readChannel = fService.openReadChannel(readableFile, false);
      BufferedReader reader = new BufferedReader(Channels.newReader(readChannel, "UTF8"));
      String line = null;
      res.getWriter().println("Contents of the file: ");

      while ((line = reader.readLine()) != null) {
        res.getWriter().println(line + "<br>");
      }
      readChannel.close();
    } else // Search for the file in blob
    {
      List<BlobInfo> blobToRead = new LinkedList<BlobInfo>();
      Iterator<BlobInfo> blobIterator = new BlobInfoFactory().queryBlobInfos();
      while (blobIterator.hasNext()) blobToRead.add(blobIterator.next());
      res.setContentType("text/plain");
      Boolean filePresent = false;
      int i;
      for (i = 0; i < blobToRead.size(); i++) {
        fileName = blobToRead.get(i).getFilename();
        if (fileName.equals(fileContentToDisplay)) {
          FileService fService = FileServiceFactory.getFileService();
          res.getWriter().println("File " + fileName + " is present in the blob store");

          readableFile = fService.getBlobFile(blobToRead.get(i).getBlobKey());

          FileReadChannel readChannel = fService.openReadChannel(readableFile, false);
          BufferedReader reader = new BufferedReader(Channels.newReader(readChannel, "UTF8"));
          String line = null;
          res.getWriter().println("printing the contents : ");

          while ((line = reader.readLine()) != null) {

            res.getWriter().println(line);
          }

          readChannel.close();
        } else {
          res.getWriter().println("File " + fileName + " is not present in the blob store");
        }
      }
    }
    endTime = System.currentTimeMillis();
    res.getWriter().println("Time taken for the operation is " + (endTime - startTime) + " ms");
  }
コード例 #2
0
  @InSequence(10)
  @Test
  @OperateOnDeployment("dep1")
  public void insertIntoBlobstoreOnDep1() throws Exception {
    BlobstoreService service = BlobstoreServiceFactory.getBlobstoreService();

    FileService fileService = FileServiceFactory.getFileService();
    AppEngineFile file = fileService.createNewBlobFile("text/plain", "uploadedText.txt");
    FileWriteChannel channel = fileService.openWriteChannel(file, true);
    try {
      channel.write(ByteBuffer.wrap(TEXT.getBytes()));
    } finally {
      channel.closeFinally();
    }

    waitForSync();
    BlobKey blobKey = fileService.getBlobKey(file);
    System.out.println("Blob key: " + blobKey);
    byte[] bytes = service.fetchData(blobKey, 0, Long.MAX_VALUE);

    Assert.assertEquals(TEXT, new String(bytes));

    DatastoreService ds = DatastoreServiceFactory.getDatastoreService();
    Entity dsBK = new Entity("blobTestId", 1);
    dsBK.setProperty("blogId", blobKey.getKeyString());
    ds.put(dsBK);
    waitForSync();
  }
コード例 #3
0
  public void doPost(HttpServletRequest req, HttpServletResponse resp) throws IOException {
    int index;

    DatastoreService ds;
    MemcacheService ms;
    BlobstoreService bs;
    URLFetchService us;
    FileService fs;

    Map<String, List<BlobKey>> blobMap;
    BlobKey blobKey;
    BlobInfoFactory blobInfoFactory;
    BlobInfo blobInfo;

    int postCount;
    int postIndex;
    String postType;
    String postText;
    String postDelpw;
    String postShowgallery;
    DataObj dataObj;
    String filelink;

    String picUrl;
    HTTPResponse picRes;
    List<HTTPHeader> headerList;
    String picMime;
    String[] fileNamePart;
    AppEngineFile picFile;
    FileWriteChannel writeChannel;

    PostObj postObj;
    List<PostObj> postObjList;
    String linkID;

    resp.setCharacterEncoding("UTF-8");
    resp.setContentType("text/plain");

    try {
      ds = DatastoreServiceFactory.getDatastoreService();
      ms = MemcacheServiceFactory.getMemcacheService();
      bs = BlobstoreServiceFactory.getBlobstoreService();
      us = URLFetchServiceFactory.getURLFetchService();
      fs = FileServiceFactory.getFileService();
      blobInfoFactory = new BlobInfoFactory(ds);

      blobMap = bs.getUploads(req);
      postCount = Integer.valueOf(req.getParameter("input_post_count"));
      postObjList = new ArrayList<PostObj>();

      for (postIndex = 0; postIndex < postCount; postIndex++) {
        try {
          postType = req.getParameter("input_post_type_" + postIndex);
          if (postType == null) {
            continue;
          }

          postText = req.getParameter("input_post_text_" + postIndex);
          postDelpw = req.getParameter("input_post_delpw_" + postIndex);
          postShowgallery = req.getParameter("input_post_showgallery_" + postIndex);
          if (postShowgallery == null) {
            postShowgallery = "";
          }

          if (postType.equals("file") == true) {
            blobKey = blobMap.get("input_post_file_" + postIndex).get(0);
            if (blobKey == null) {
              throw new Exception();
            }

            dataObj = new DataObj();
            dataObj.fileid = createUID();
            dataObj.posttime = new Date().getTime();
            dataObj.delpw = postDelpw;
            dataObj.blobkey = blobKey;
            dataObj.putDB(ds);

            blobInfo = blobInfoFactory.loadBlobInfo(dataObj.blobkey);
            filelink =
                "http://"
                    + req.getServerName()
                    + "/down/"
                    + dataObj.fileid
                    + "/"
                    + blobInfo.getFilename();
            postObj =
                new PostObj(
                    dataObj.fileid,
                    filelink,
                    blobInfo.getSize(),
                    dataObj.posttime,
                    dataObj.delpw,
                    postShowgallery);
            postObjList.add(postObj);
          } else if (postType.equals("url") == true) {
            picUrl = postText;

            picRes = us.fetch(new URL(picUrl));
            headerList = picRes.getHeaders();
            picMime = "application/octet-stream";
            for (index = 0; index < headerList.size(); index++) {
              if (headerList.get(index).getName().compareToIgnoreCase("Content-Type") == 0) {
                picMime = headerList.get(index).getValue();
                break;
              }
            }

            fileNamePart = picUrl.split("/");

            picFile = fs.createNewBlobFile(picMime, fileNamePart[fileNamePart.length - 1]);
            writeChannel = fs.openWriteChannel(picFile, true);
            writeChannel.write(ByteBuffer.wrap(picRes.getContent()));
            writeChannel.closeFinally();

            dataObj = new DataObj();
            dataObj.fileid = createUID();
            dataObj.posttime = new Date().getTime();
            dataObj.delpw = postDelpw;
            dataObj.blobkey = fs.getBlobKey(picFile);
            dataObj.putDB(ds);

            blobInfo = blobInfoFactory.loadBlobInfo(dataObj.blobkey);
            filelink =
                "http://"
                    + req.getServerName()
                    + "/down/"
                    + dataObj.fileid
                    + "/"
                    + blobInfo.getFilename();
            postObj =
                new PostObj(
                    dataObj.fileid,
                    filelink,
                    blobInfo.getSize(),
                    dataObj.posttime,
                    dataObj.delpw,
                    postShowgallery);
            postObjList.add(postObj);
          }
        } catch (Exception e) {
        }
      }

      linkID = postFile(us, postObjList);

      if (req.getParameter("specflag") != null) {
        resp.getWriter().print("http://tnfshmoe.appspot.com/link.jsp?linkid=" + linkID);
      } else {
        resp.sendRedirect("http://tnfshmoe.appspot.com/link.jsp?linkid=" + linkID);
      }
    } catch (Exception e) {
    }
  }