如何使用JDBC将行插入到ResultSet对象中?

insertRow()ResultSet接口的方法将新行插入到ResultSet对象以及表中。

//从ResultSet对象中删除列

rs.insertRow();

假设我们有一个名为cricketers_data的表,其中包含6条记录,如下所示:

+----+------------+------------+---------------+----------------+-------------+

| ID | First_Name | Last_Name  | Year_Of_Birth | Place_Of_Birth | Country     |

+----+------------+------------+---------------+----------------+-------------+

| 1  | Shikhar    | Dhawan     | 1981-12-05    | Delhi          | India       |

| 2  | Jonathan   | Trott      | 1981-04-22    | CapeTown       | SouthAfrica |

| 3  | Lumara     | Sangakkara | 1977-10-27    | Matale         | Srilanka    |

| 4  | Virat      | Kohli      | 1988-11-05    | Delhi          | India       |

| 5  | Rohit      | Sharma     | 1987-04-30    | Nagpur         | India       |   

| 6  | Ravindra   | Jadeja     | 1988-12-06    | Nagpur         | India       |

+----+------------+------------+---------------+----------------+-------------+

接下来的JDBC程序与数据库建立连接,将cricketers_data表的内容检索到ResultSet对象中,并在其中插入一行并打印结果:

import java.sql.Connection;

import java.sql.Date;

import java.sql.DriverManager;

import java.sql.ResultSet;

import java.sql.Statement;

public class ResultSet_InsertingRow {

   public static void main(String args[])throws Exception {

      //注册驱动程序

      DriverManager.registerDriver(new com.mysql.jdbc.Driver());

      //获得连接

      String mysqlUrl = "jdbc:mysql://localhost/mydatabase";

      Connection con = DriverManager.getConnection(mysqlUrl, "root", "password");

      System.out.println("Connection established......");

      //创建一个Statement对象

      Statement stmt = con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE);

      //查询以检索employee_data表的内容

      String query = "select * from Cricketers_Dataa";

      //执行查询

      ResultSet rs = stmt.executeQuery(query);

      rs.beforeFirst();

      rs.moveToInsertRow();

      rs.updateInt(1, 7);

      rs.updateString(2, "James");

      rs.updateString(3, "Anderson");

      rs.updateDate(4, new Date(394243200000L));

      rs.updateString(5, "Burnely");

      rs.updateString(6, "England");

      //从ResultSet对象中删除列

      rs.insertRow();

      //当前行的内容

      rs.beforeFirst();

      while (rs.next()) {

         System.out.print("id: "+rs.getInt(1)+", ");

         System.out.print("First name: "+rs.getString(2)+", ");

         System.out.print("Last name: "+rs.getString(3)+", ");

         System.out.print("Year of birth: "+rs.getDate(4)+", ");

         System.out.print("Place of birth: "+rs.getString(5)+", ");

         System.out.print("Country: "+rs.getString(6));

         System.out.println(" ");

      }

   }

}

输出结果

Connection established......

id: 1, First name: Shikhar, Last name: Dhawan, Year of birth: 1981-12-05, Place of birth: Delhi, Country: India

id: 2, First name: Jonathan, Last name: Trott, Year of birth: 1981-04-22, Place of birth: CapeTown, Country: SouthAfrica

id: 3, First name: Lumara, Last name: Sangakkara, Year of birth: 1977-10-27, Place of birth: Matale, Country: Srilanka

id: 4, First name: Virat, Last name: Kohli, Year of birth: 1988-11-05, Place of birth: Delhi, Country: India

id: 5, First name: Rohit, Last name: Sharma, Year of birth: 1987-04-30, Place of birth: Nagpur, Country: India

id: 6, First name: Ravindra, Last name: Jadeja, Year of birth: 1988-12-06, Place of birth: Nagpur, Country: India

id: 7, First name: James, Last name: Anderson, Year of birth: 1982-06-30, Place of birth: Burnely, Country: England

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