Question

我正在使用Google Spreadsheet API更新包含大量数据的电子表格（数百行和大约20列）。

我已经测试了批量调用以更新2500个单元格。该呼叫大约需要40秒才能完成，请求大约为1mb，响应大约为2mb。

有没有办法让它更快地运作？

Answer 1

通过在UPDATE之前跳过QUERY部分，我能够加快官方API http://code.google.com/apis/spreadsheets/data/3.0/developers_guide.html#SendingBatchRequests中提供的批处理请求。所以这就是他们在示例中所拥有的：

// Prepare the update
    // getCellEntryMap is what makes the update fast.
    Map cellEntries = getCellEntryMap(ssSvc, cellFeedUrl, cellAddrs);

    CellFeed batchRequest = new CellFeed();
    for (CellAddress cellAddr : cellAddrs) {
      URL entryUrl = new URL(cellFeedUrl.toString() + "/" + cellAddr.idString);
      CellEntry batchEntry = new CellEntry(cellEntries.get(cellAddr.idString));
      batchEntry.changeInputValueLocal(cellAddr.idString);
      BatchUtils.setBatchId(batchEntry, cellAddr.idString);
      BatchUtils.setBatchOperationType(batchEntry, BatchOperationType.UPDATE);
      batchRequest.getEntries().add(batchEntry);
    }
  // Submit the update
    Link batchLink = cellFeed.getLink(Link.Rel.FEED_BATCH, Link.Type.ATOM);
    CellFeed batchResponse = ssSvc.batch(new URL(batchLink.getHref()), batchRequest);

这就是我改为

的原因

CellFeed batchRequest = new CellFeed();
        for (CellInfo cellAddr : cellsInfo) {
             CellEntry batchEntry = new CellEntry(cellAddr.row, cellAddr.col, cellAddr.idString);
              batchEntry.setId(String.format("%s/%s", worksheet.getCellFeedUrl().toString(), cellAddr.idString));         
              BatchUtils.setBatchId(batchEntry, cellAddr.idString);
              BatchUtils.setBatchOperationType(batchEntry, BatchOperationType.UPDATE);  
              batchRequest.getEntries().add(batchEntry);



        }

        CellFeed cellFeed = ssSvc.getFeed(worksheet.getCellFeedUrl(), CellFeed.class);      
        Link batchLink =  cellFeed.getLink(Link.Rel.FEED_BATCH, Link.Type.ATOM);

        ssSvc.setHeader("If-Match", "*");
        CellFeed batchResponse = ssSvc.batch(new URL(batchLink.getHref()), batchRequest);
        ssSvc.setHeader("If-Match", null);

请注意，应更改标题以使其正常工作。

Answer 2

加速：由David Tolioupov发布 - 它有效。一些有用的额外信息。

如何使用CellFeed的示例，请参阅CellDemo.java http://gdata-java-client.googlecode.com/svn-history/r51/trunk/java/sample/spreadsheet/cell/CellDemo.java

该示例包含详细信息，足以帮助我优化代码。

如David Tolioupov所述，以这种方式创建CellEntry：

CellEntry batchEntry = new CellEntry(cellAddr.row, cellAddr.col, cellAddr.idString);
batchEntry.setId(String.format("%s/%s", cellFeedUrl.toString(), cellAddr.idString));

来自示例：

/**
 * Returns a CellEntry with batch id and operation type that will tell the
 * server to update the specified cell with the given value. The entry is
 * fetched from the server in order to get the current edit link (for
 * optimistic concurrency).
 * 
 * @param row the row number of the cell to operate on
 * @param col the column number of the cell to operate on
 * @param value the value to set in case of an update the cell to operate on
 * 
 * @throws ServiceException when the request causes an error in the Google
 *         Spreadsheets service.
 * @throws IOException when an error occurs in communication with the Google
 *         Spreadsheets service.
 */
private CellEntry createUpdateOperation(int row, int col, String value)
    throws ServiceException, IOException {
  String batchId = "R" + row + "C" + col;
  URL entryUrl = new URL(cellFeedUrl.toString() + "/" + batchId);
  CellEntry entry = service.getEntry(entryUrl, CellEntry.class);
  entry.changeInputValueLocal(value);
  BatchUtils.setBatchId(entry, batchId);
  BatchUtils.setBatchOperationType(entry, BatchOperationType.UPDATE);

  return entry;
}

所需要的只是cellFeedUrl，然后创建请求并发送它。

Answer 3

如果您要更新整行，可以尝试使用基于列表的Feed：

http://code.google.com/intl/fr-FR/apis/spreadsheets/data/3.0/developers_guide.html#UpdatingListRows

它允许您更新值（而不是公式）。

如果您仍然遇到性能问题，则应切换到关系数据库服务器或Google数据存储区（如果您使用的是谷歌应用引擎）

通过电子表格api更新包含大量数据的Google电子表格的最快方法是什么？

3 个答案: