步驟 3：使用 Java 連線到 SQL 的概念證明

這個範例只應被視為一個概念證明。 為了清楚起見，已將範例程式碼簡化，而其不一定代表 Microsoft 建議的最佳做法。

步驟 1:連線

使用連接類別連接到 SQL Database。

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class SQLDatabaseConnection {
    // Connect to your database.
    // Replace server name, username, and password with your credentials
    public static void main(String[] args) {
        String connectionUrl =
                "jdbc:sqlserver://yourserver.database.windows.net:1433;"
                        + "database=AdventureWorks;"
                        + "user=yourusername@yourserver;"
                        + "password=<password>;"
                        + "encrypt=true;"
                        + "trustServerCertificate=false;"
                        + "loginTimeout=30;";

        try (Connection connection = DriverManager.getConnection(connectionUrl);) {
            // Code here.
        }
        // Handle any errors that may have occurred.
        catch (SQLException e) {
            e.printStackTrace();
        }
    }
}

步驟 2:執行查詢

在此範例中，連接到 Azure SQL Database、執行 SELECT 陳述式，並傳回選取的資料列。

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class SQLDatabaseConnection {

    // Connect to your database.
    // Replace server name, username, and password with your credentials
    public static void main(String[] args) {
        String connectionUrl =
                "jdbc:sqlserver://yourserver.database.windows.net:1433;"
                + "database=AdventureWorks;"
                + "user=yourusername@yourserver;"
                + "password=<password>;"
                + "encrypt=true;"
                + "trustServerCertificate=false;"
                + "loginTimeout=30;";

        ResultSet resultSet = null;

        try (Connection connection = DriverManager.getConnection(connectionUrl);
                Statement statement = connection.createStatement();) {

            // Create and execute a SELECT SQL statement.
            String selectSql = "SELECT TOP 10 Title, FirstName, LastName from SalesLT.Customer";
            resultSet = statement.executeQuery(selectSql);

            // Print results from select statement
            while (resultSet.next()) {
                System.out.println(resultSet.getString(2) + " " + resultSet.getString(3));
            }
        }
        catch (SQLException e) {
            e.printStackTrace();
        }
    }
}

步驟 3：插入資料列

在此範例中，執行 INSERT 陳述式、傳遞參數，並且擷取自動產生的主索引鍵值。

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.Statement;

public class SQLDatabaseConnection {

    // Connect to your database.
    // Replace server name, username, and password with your credentials
    public static void main(String[] args) {
        String connectionUrl =
                "jdbc:sqlserver://yourserver.database.windows.net:1433;"
                        + "database=AdventureWorks;"
                        + "user=yourusername@yourserver;"
                        + "password=<password>;"
                        + "encrypt=true;"
                        + "trustServerCertificate=false;"
                        + "loginTimeout=30;";

        String insertSql = "INSERT INTO SalesLT.Product (Name, ProductNumber, Color, StandardCost, ListPrice, SellStartDate) VALUES "
                + "('NewBike', 'BikeNew', 'Blue', 50, 120, '2016-01-01');";

        ResultSet resultSet = null;

        try (Connection connection = DriverManager.getConnection(connectionUrl);
                PreparedStatement prepsInsertProduct = connection.prepareStatement(insertSql, Statement.RETURN_GENERATED_KEYS);) {

            prepsInsertProduct.execute();
            // Retrieve the generated key from the insert.
            resultSet = prepsInsertProduct.getGeneratedKeys();

            // Print the ID of the inserted row.
            while (resultSet.next()) {
                System.out.println("Generated: " + resultSet.getString(1));
            }
        }
        // Handle any errors that may have occurred.
        catch (Exception e) {
            e.printStackTrace();
        }
    }
}

另請參閱

• 範例 JDBC 驅動程式應用程式