java链接数据库SQL Server代码

以下是Java连接SQL Server数据库的代码示例：

import java.sql.*;

public class SQLServerExample {
  public static void main(String[] args) {
    String connectionUrl = "jdbc:sqlserver://localhost:1433;databaseName=your_database_name;user=your_username;password=your_password;";

    try {
      // Establish a connection
      Connection connection = DriverManager.getConnection(connectionUrl);

      // Execute a query
      Statement statement = connection.createStatement();
      ResultSet resultSet = statement.executeQuery("SELECT * FROM your_table_name");

      // Process the results
      while (resultSet.next()) {
        int id = resultSet.getInt("id");
        String name = resultSet.getString("name");
        System.out.println("ID: " + id + ", Name: " + name);
      }

      // Close the connection
      connection.close();
    }
    catch (SQLException e) {
      System.out.println("SQL Exception: " + e.getMessage());
    }
  }
}

在上面的代码中，你需要将 `your_database_name`，`your_username` 和 `your_password` 替换为你的数据库名称、用户名和密码。你还需要将 `your_table_name` 替换为你要查询的表的名称。