通过 C++ 在 Node.js 中检索 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。

Aspose.Cells for Node.js via C++ 提供了 Workbook.dataConnections 属性,用于检索外部连接。它返回工作簿中的 ExternalConnection 对象数组。

如果 ExternalConnection 对象包含 SQL 连接数据,则可以将其类型转换为 DBConnection 对象,并使用其属性检索数据库命令、命令类型、连接描述、连接信息、凭据等。

const path = require("path");
const AsposeCells = require("aspose.cells.node");

// The path to the documents directory.
const dataDir = path.join(__dirname, "data");
const filePath = path.join(dataDir, "connection.xlsx");
// Create a workbook object from source file
const workbook = new AsposeCells.Workbook(filePath);

// Access the external collections
const connections = workbook.getDataConnections();
const connectionCount = connections.getCount();

let connection = null;

for (let i = 0; i < connectionCount; i++) {
connection = connections.get(i);

// Check if the Connection is DBConnection, then retrieve its various properties
if (connection.getClassType() === AsposeCells.ExternalConnectionClassType.DBConnection) {

const dbConn = connection;

// Retrieve DB Connection Command
console.log("Command: " + dbConn.getCommand());

// Retrieve DB Connection Command Type
console.log("Command Type: " + dbConn.getCommandType());

// Retrieve DB Connection Description
console.log("Description: " + dbConn.getConnectionDescription());

// Retrieve DB Connection ID
console.log("Id: " + dbConn.getId());

// Retrieve DB Connection Info
console.log("Info: " + dbConn.getConnectionString());

// Retrieve DB Connection Credentials
console.log("Credentials: " + dbConn.getCredentialsMethodType());

// Retrieve DB Connection Name
console.log("Name: " + dbConn.getName());

// Retrieve DB Connection ODC File
console.log("OdcFile: " + dbConn.getOdcFile());

// Retrieve DB Connection Source File
console.log("Source file: " + dbConn.getSourceFile());

// Retrieve DB Connection Type
console.log("Type: " + dbConn.getSourceType());

// Retrieve DB Connection Parameters Collection
const paramCollection = dbConn.getParameters();
const paramCount = paramCollection.getCount();

// Iterate the Parameter Collection
for (let j = 0; j < paramCount; j++) {
const param = paramCollection.get(j);

// Retrieve Parameter Cell Reference
console.log("Cell reference: " + param.getCellReference());

// Retrieve Parameter Name
console.log("Parameter name: " + param.getName());

// Retrieve Parameter Prompt
console.log("Prompt: " + param.getPrompt());

// Retrieve Parameter SQL Type
console.log("SQL Type: " + param.getSqlType());

// Retrieve Parameter Type
console.log("Param Type: " + param.getType());

// Retrieve Parameter Value
console.log("Param Value: " + param.getValue());
} // End for
} // End if
} // End for