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

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

有没有办法让它更快地工作?

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3 回答 3

11

通过在更新之前跳过查询部分,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的内容:

// 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);

这就是我把它改成的

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。

于 2012-02-29T07:44:12.010 回答
2

加速:由 David Tolioupov 发布 - 它有效。一些有帮助的额外信息。

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

该示例具有详细信息,足够详细,可以帮助我优化代码。

正如 David Tolioupov 所说,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)); 

从例子:

/**
 * 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。

于 2013-01-31T00:41:08.203 回答
1

如果要更新整行,可以尝试使用基于列表的提要:

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

它将允许您更新值(不是公式)。

如果您仍然有性能问题,您应该切换到关系数据库服务器或谷歌的数据存储(如果您使用的是谷歌应用引擎)

于 2011-12-06T16:33:12.710 回答