擷取結果集資料範例

下載 JDBC 驅動程式

此 Microsoft JDBC Driver for SQL Server 範例應用程式示範如何從 SQL Server 資料庫擷取一組資料，然後顯示該資料。

此範例的程式碼檔案名稱為 RetrieveResultSet.java，可以在下列位置找到：

\<installation directory>\sqljdbc_<version>\<language>\samples\resultsets

需求

若要執行此範例應用程式，您必須將 Classpath 設定為包含 mssql-jdbc jar 檔案。 您也必須存取 AdventureWorks2022 範例資料庫。 如需如何設定 classpath 的詳細資訊，請參閱使用 JDBC 驅動程式。

注意

適用於 SQL Server 的 Microsoft JDBC 驅動程式提供 mssql-jdbc 類別庫檔案，可根據您慣用的 Java Runtime Environment (JRE) 設定使用。 如需選擇哪個 JAR 檔案的詳細資訊，請參閱 JDBC Driver 的系統需求。

範例

下例中的範例程式碼會建立與 AdventureWorks2022 範例資料庫的連線。 接著，使用 SQL 陳述式與 SQLServerStatement 物件搭配，它會執行 SQL 陳述式，並將其傳回的資料放入 SQLServerResultSet 物件中。

接下來，範例程式碼會呼叫自訂 displayRow 方法逐一查看結果集中的資料列，並且使用 getString 方法來顯示部分資料。

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

public class RetrieveResultSet {

    public static void main(String[] args) {

        // Create a variable for the connection string.
        String connectionUrl = "jdbc:sqlserver://<server>:<port>;encrypt=true;databaseName=AdventureWorks;user=<user>;password=<password>";

        try (Connection con = DriverManager.getConnection(connectionUrl); Statement stmt = con.createStatement();) {
            createTable(stmt);
            String SQL = "SELECT * FROM Production.Product;";
            ResultSet rs = stmt.executeQuery(SQL);
            displayRow("PRODUCTS", rs);
        }
        // Handle any errors that may have occurred.
        catch (SQLException e) {
            e.printStackTrace();
        }
    }

    private static void displayRow(String title,
            ResultSet rs) throws SQLException {
        System.out.println(title);
        while (rs.next()) {
            System.out.println(rs.getString("ProductNumber") + " : " + rs.getString("Name"));
        }
    }

    private static void createTable(Statement stmt) throws SQLException {
        stmt.execute("if exists (select * from sys.objects where name = 'Product_JDBC_Sample')"
                + "drop table Product_JDBC_Sample");

        String sql = "CREATE TABLE [Product_JDBC_Sample](" + "[ProductID] [int] IDENTITY(1,1) NOT NULL,"
                + "[Name] [varchar](30) NOT NULL," + "[ProductNumber] [nvarchar](25) NOT NULL,"
                + "[MakeFlag] [bit] NOT NULL," + "[FinishedGoodsFlag] [bit] NOT NULL," + "[Color] [nvarchar](15) NULL,"
                + "[SafetyStockLevel] [smallint] NOT NULL," + "[ReorderPoint] [smallint] NOT NULL,"
                + "[StandardCost] [money] NOT NULL," + "[ListPrice] [money] NOT NULL," + "[Size] [nvarchar](5) NULL,"
                + "[SizeUnitMeasureCode] [nchar](3) NULL," + "[WeightUnitMeasureCode] [nchar](3) NULL,"
                + "[Weight] [decimal](8, 2) NULL," + "[DaysToManufacture] [int] NOT NULL,"
                + "[ProductLine] [nchar](2) NULL," + "[Class] [nchar](2) NULL," + "[Style] [nchar](2) NULL,"
                + "[ProductSubcategoryID] [int] NULL," + "[ProductModelID] [int] NULL,"
                + "[SellStartDate] [datetime] NOT NULL," + "[SellEndDate] [datetime] NULL,"
                + "[DiscontinuedDate] [datetime] NULL," + "[rowguid] [uniqueidentifier] ROWGUIDCOL  NOT NULL,"
                + "[ModifiedDate] [datetime] NOT NULL,)";

        stmt.execute(sql);

        sql = "INSERT Product_JDBC_Sample VALUES ('Adjustable Time','AR-5381','0','0',NULL,'1000','750','0.00','0.00',NULL,NULL,NULL,NULL,'0',NULL,NULL,NULL,NULL,NULL,'2008-04-30 00:00:00.000',NULL,NULL,'694215B7-08F7-4C0D-ACB1-D734BA44C0C8','2014-02-08 10:01:36.827') ";
        stmt.execute(sql);

        sql = "INSERT Product_JDBC_Sample VALUES ('ML Bottom Bracket','BB-8107','0','0',NULL,'1000','750','0.00','0.00',NULL,NULL,NULL,NULL,'0',NULL,NULL,NULL,NULL,NULL,'2008-04-30 00:00:00.000',NULL,NULL,'694215B7-08F7-4C0D-ACB1-D734BA44C0C8','2014-02-08 10:01:36.827') ";
        stmt.execute(sql);

        sql = "INSERT Product_JDBC_Sample VALUES ('Mountain-500 Black, 44','BK-M18B-44','0','0',NULL,'1000','750','0.00','0.00',NULL,NULL,NULL,NULL,'0',NULL,NULL,NULL,NULL,NULL,'2008-04-30 00:00:00.000',NULL,NULL,'694215B7-08F7-4C0D-ACB1-D734BA44C0C8','2014-02-08 10:01:36.827') ";
        stmt.execute(sql);
    }
}

另請參閱

使用結果集