有多種轉換HTML表的方法 into使用JSON,CSV和Excel電子表格 GrabzIt的Java API,這裡詳細介紹了一些最有用的技術。 但是,在開始之前,請記住 URLToTable, HTMLToTable or 文件到表格 方法 Save or SaveTo 必須調用方法來捕獲表。 如果您想快速查看此服務是否適合您,可以嘗試 捕獲HTML表的實時演示 從URL。
此代碼段將轉換在指定網頁中找到的第一個HTML表 intoa CSV文件。
grabzIt.URLToTable("https://www.tesla.com"); //Then call the Save or SaveTo method
grabzIt.HTMLToTable("<html><body><table><tr><th>Name</th><th>Age</th></tr> <tr><td>Tom</td><td>23</td></tr><tr><td>Nicola</td><td>26</td></tr> </table></body></html>"); //Then call the Save or SaveTo method
grabzIt.FileToTable("tables.html"); //Then call the Save or SaveTo method
默認情況下,它將轉換它標識的第一個表 intoa表。 但是,可以通過將2傳遞給網頁中的第二個表來進行轉換 setTableNumberToInclude
的方法 TableOptions 類。
GrabzItClient grabzIt = new GrabzItClient("Sign in to view your Application Key", "Sign in to view your Application Secret"); TableOptions options = new TableOptions(); options.setTableNumberToInclude(2); grabzIt.URLToTable("https://www.tesla.com", options); //Then call the Save or SaveTo method grabzIt.SaveTo("result.csv");
GrabzItClient grabzIt = new GrabzItClient("Sign in to view your Application Key", "Sign in to view your Application Secret"); TableOptions options = new TableOptions(); options.setTableNumberToInclude(2); grabzIt.HTMLToTable("<html><body><table><tr><th>Name</th><th>Age</th></tr> <tr><td>Tom</td><td>23</td></tr><tr><td>Nicola</td><td>26</td></tr> </table></body></html>", options); //Then call the Save or SaveTo method grabzIt.SaveTo("result.csv");
GrabzItClient grabzIt = new GrabzItClient("Sign in to view your Application Key", "Sign in to view your Application Secret"); TableOptions options = new TableOptions(); options.setTableNumberToInclude(2); grabzIt.FileToTable("tables.html", options); //Then call the Save or SaveTo method grabzIt.SaveTo("result.csv");
您也可以使用 setTargetElement
確保只轉換指定元素ID中的表的方法。
GrabzItClient grabzIt = new GrabzItClient("Sign in to view your Application Key", "Sign in to view your Application Secret"); TableOptions options = new TableOptions(); options.setTargetElement("stocks_table"); grabzIt.URLToTable("https://www.tesla.com", options); //Then call the Save or SaveTo method grabzIt.SaveTo("result.csv");
GrabzItClient grabzIt = new GrabzItClient("Sign in to view your Application Key", "Sign in to view your Application Secret"); TableOptions options = new TableOptions(); options.setTargetElement("stocks_table"); grabzIt.HTMLToTable("<html><body><table id='stocks_table'><tr><th>Name</th><th>Age</th></tr> <tr><td>Tom</td><td>23</td></tr><tr><td>Nicola</td><td>26</td></tr> </table></body></html>", options); //Then call the Save or SaveTo method grabzIt.SaveTo("result.csv");
GrabzItClient grabzIt = new GrabzItClient("Sign in to view your Application Key", "Sign in to view your Application Secret"); TableOptions options = new TableOptions(); options.setTargetElement("stocks_table"); grabzIt.FileToTable("tables.html", options); //Then call the Save or SaveTo method grabzIt.SaveTo("result.csv");
另外,您也可以通過將true傳遞給 setIncludeAllTables
方法,但是僅適用於XLSX和JSON格式。 此選項會將每個表放在生成的電子表格工作簿中的新表中。
GrabzItClient grabzIt = new GrabzItClient("Sign in to view your Application Key", "Sign in to view your Application Secret"); TableOptions options = new TableOptions(); options.setFormat(TableFormat.XLSX); options.setIncludeAllTables(true); grabzIt.URLToTable("https://www.tesla.com", options); //Then call the Save or SaveTo method grabzIt.SaveTo("result.xlsx");
GrabzItClient grabzIt = new GrabzItClient("Sign in to view your Application Key", "Sign in to view your Application Secret"); TableOptions options = new TableOptions(); options.setFormat(TableFormat.XLSX); options.setIncludeAllTables(true); grabzIt.HTMLToTable("<html><body><table><tr><th>Name</th><th>Age</th></tr> <tr><td>Tom</td><td>23</td></tr><tr><td>Nicola</td><td>26</td></tr> </table></body></html>", options); //Then call the Save or SaveTo method grabzIt.SaveTo("result.xlsx");
GrabzItClient grabzIt = new GrabzItClient("Sign in to view your Application Key", "Sign in to view your Application Secret"); TableOptions options = new TableOptions(); options.setFormat(TableFormat.XLSX); options.setIncludeAllTables(true); grabzIt.FileToTable("tables.html", options); //Then call the Save or SaveTo method grabzIt.SaveTo("result.xlsx");
GrabzIt還可以將在Web上找到的HTML表轉換為JSON,只需指定JSON格式即可。 在下面的示例中,數據被同步讀取,並以 GrabzItFile
通過使用對象 SaveTo
方法,但是通常建議您執行此操作 異步地.
轉換完成後, toString
調用方法以獲取JSON作為 string,然後可以通過類似的庫進行解析 谷歌gson.
GrabzItClient grabzIt = new GrabzItClient("Sign in to view your Application Key", "Sign in to view your Application Secret"); TableOptions options = new TableOptions(); options.setFormat(TableFormat.JSON); options.setTableNumberToInclude(1); grabzIt.URLToTable("https://www.tesla.com", options); GrabzItFile file = grabzIt.SaveTo(); if (file != null) { String json = file.toString(); }
您可以將自定義標識符傳遞給 表 方法,如下所示,然後將該值返回到您的GrabzIt Java處理程序。 例如,此自定義標識符可以是數據庫標識符,從而允許將屏幕截圖與特定的數據庫記錄相關聯。
GrabzItClient grabzIt = new GrabzItClient("Sign in to view your Application Key", "Sign in to view your Application Secret"); TableOptions options = new TableOptions(); options.setCustomId("123456"); grabzIt.URLToTable("https://www.tesla.com", options); //Then call the Save method grabzIt.Save("http://www.example.com/handler");
GrabzItClient grabzIt = new GrabzItClient("Sign in to view your Application Key", "Sign in to view your Application Secret"); TableOptions options = new TableOptions(); options.setCustomId("123456"); grabzIt.HTMLToTable("<html><body><h1>Hello World!</h1></body></html>", options); //Then call the Save method grabzIt.Save("http://www.example.com/handler");
GrabzItClient grabzIt = new GrabzItClient("Sign in to view your Application Key", "Sign in to view your Application Secret"); TableOptions options = new TableOptions(); options.setCustomId("123456"); grabzIt.FileToTable("example.html", options); //Then call the Save method grabzIt.Save("http://www.example.com/handler");