利用JDBC中处理批量更新oracle数据

JDBC课的时候，听到一节是讲在利用JDBC中处理批量更新oracle数据时候的特性，让我很为JDBC的特性感的兴奋，利用这个特性可以在批量更新数据的时候不同往常一样每次都需要传送完成的SQL语句到数据库中。其中示范代码如下:

1 import java.sql.*;

2

3 public class BatchUpdates

4 {

5 public static void main(String[] args)

6 {

7 Connection conn = null;

8 Statement stmt = null;

9 PreparedStatement pstmt = null;

10 ResultSet rset = null;

11 int i = 0;

12

13 try

14 {

15 DriverManager.registerDriver(new oracle.jdbc.OracleDriver());

16

17 String url = "jdbc:oracle:oci8:@";

18 try {

19 //检查是否配置JDBC环境变量

20 String url1 = System.getProperty("JDBC_URL");

21 if (url1 != null)

22 url = url1;

23 } catch (Exception e) {

24 //如果是在集成开发环境导入了JDBC的话可以注释这句

25 }

26

27 // 连接到数据库用 scott

28 conn = DriverManager.getConnection (url, "scott", "tiger");

29

30 stmt = conn.createStatement();

31 try { stmt.execute(

32 "create table mytest_table (col1 number, col2 varchar2(20))");

33 } catch (Exception e1) {}

34

35 //

36 // 批量插入新值.

37 //

38 pstmt = conn.prepareStatement("insert into mytest_table values (?, ?)");

39

40 pstmt.setInt(1, 1);

41 pstmt.setString(2, "row 1");

42 pstmt.addBatch();

43

44 pstmt.setInt(1, 2);

45 pstmt.setString(2, "row 2");

46 pstmt.addBatch();

47

48 pstmt.executeBatch();

49

50 //

51 // 查询 输出结构集

52 //

53 rset = stmt.executeQuery("select * from mytest_table");

54 while (rset.next())

55 {

56 System.out.println(rset.getInt(1) + ", " + rset.getString(2));

57 }

58 }

59 catch (Exception e)

60 {

61 e.printStackTrace();

62 }

63 finally

64 {

65 if (stmt != null)

66 {

67 try { stmt.execute("drop table mytest_table"); } catch (Exception e) {}

68 try { stmt.close(); } catch (Exception e) {}

69 }

70 if (pstmt != null)

71 {

72 try { pstmt.close(); } catch (Exception e) {}

73 }

74 if (conn != null)

75 {

76 try { conn.close(); } catch (Exception e) {}

77 }

78 }

79 }

80 }