检索SQL连接数据

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在Microsoft Excel中,通过以下步骤连接数据库:

  1. 单击数据菜单,选择来自其他源,然后选择来自SQL Server
  2. 然后选择数据,然后选择连接。 3.使用连接向导连接到数据库并创建数据库查询。

在Microsoft Excel中显示SQL连接选项

todo:image_alt_text

Aspose.Cells提供了Workbook.getDataConnections()方法来检索外部连接。它返回工作簿中的ExternalConnection对象集合。

如果ExternalConnection对象包含SQL连接数据,则可以将其强制转换为DBConnection对象,使用其属性检索数据库命令,命令类型,连接说明,连接信息,凭证等。

// For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-Java
// The path to the documents directory.
String dataDir = Utils.getDataDir(RetrieveSQLConnectionData.class);
// Create a workbook object from source file
Workbook workbook = new Workbook(dataDir + "connection.xlsx");
// Access the external collections
ExternalConnectionCollection connections = workbook.getDataConnections();
int connectionCount = connections.getCount();
ExternalConnection connection = null;
for (int i = 0; i < connectionCount; i++) {
connection = connections.get(i);
// Check if the Connection is DBConnection, then retrieve its various properties
if (connection instanceof DBConnection) {
DBConnection dbConn = (DBConnection) connection;
// Retrieve DB Connection Command
System.out.println("Command: " + dbConn.getCommand());
// Retrieve DB Connection Command Type
System.out.println("Command Type: " + dbConn.getCommandType());
// Retrieve DB Connection Description
System.out.println("Description: " + dbConn.getConnectionDescription());
// Retrieve DB Connection ID
System.out.println("Id: " + dbConn.getConnectionId());
// Retrieve DB Connection Info
System.out.println("Info: " + dbConn.getConnectionInfo());
// Retrieve DB Connection Credentials
System.out.println("Credentials: " + dbConn.getCredentials());
// Retrieve DB Connection Name
System.out.println("Name: " + dbConn.getName());
// Retrieve DB Connection ODC File
System.out.println("OdcFile: " + dbConn.getOdcFile());
// Retrieve DB Connection Source File
System.out.println("Source file: " + dbConn.getSourceFile());
// Retrieve DB Connection Type
System.out.println("Type: " + dbConn.getType());
// Retrieve DB Connection Parameters Collection
ConnectionParameterCollection parameterCollection = dbConn.getParameters();
int paramCount = parameterCollection.getCount();
// Iterate the Parameter Collection
for (int j = 0; j < paramCount; j++) {
ConnectionParameter param = parameterCollection.get(j);
// Retrieve Parameter Cell Reference
System.out.println("Cell reference: " + param.getCellReference());
// Retrieve Parameter Name
System.out.println("Parameter name: " + param.getName());
// Retrieve Parameter Prompt
System.out.println("Prompt: " + param.getPrompt());
// Retrieve Parameter SQL Type
System.out.println("SQL Type: " + param.getSqlType());
// Retrieve Parameter Type
System.out.println("Param Type: " + param.getType());
// Retrieve Parameter Value
System.out.println("Param Value: " + param.getValue());
} // End for
} // End if
} // End for