Java连接SQL Server数据库的详细操作流程

```java
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
import java.sql.ResultSet;
 
public class SqlServerConnection {
    public static void main(String[] args) {
        // 数据库连接URL
        String url = "jdbc:sqlserver://localhost:1433;databaseName=YourDatabaseName;integratedSecurity=true;";
        // 用户名和密码（如果不使用Windows身份验证）
        String username = "yourUsername";
        String password = "yourPassword";
        
        // 创建连接对象
        Connection connection = null;
 
        try {
            // 加载JDBC驱动程序
            Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
            // 建立连接
            connection = DriverManager.getConnection(url, username, password);
            System.out.println("连接成功！");
            
            // 创建Statement对象
            Statement statement = connection.createStatement();
            // 执行SQL查询
            String sql = "SELECT * FROM YourTableName";
            ResultSet resultSet = statement.executeQuery(sql);
            
            // 处理结果集
            while (resultSet.next()) {
                System.out.println("列1: " + resultSet.getString("ColumnName1"));
                System.out.println("列2: " + resultSet.getInt("ColumnName2"));
            }
            
            // 关闭结果集
            resultSet.close();
            // 关闭Statement
            statement.close();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            // 关闭连接
            if (connection != null) {
                try {
                    connection.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}
```