Oracle存储过程:运用游标返回结果集的示例

在sqlplus中建立如下的内容：1、程序包

SQL> create or replace package types
2 as
3 type cursorType is ref cursor;
4 end;
5 /

程序包已创建。

2、函数SQL> create or replace function sp_ListEmp return types.cursortype
2 as
3 l_cursor types.cursorType;
4 begin
5 open l_cursor for select id, title from cf_news order by id;--表的名字
6 return l_cursor;
7 end;
8 /

函数已创建。

3、过程

SQL> create or replace procedure getemps( p_cursor in out types.cursorType )
2 as
3 begin
4 open p_cursor for select id, title from cf_news order by id;--表的名字
5 end;
6 /

过程已创建。

4、建立一个可执行的java控制台程序

import java.sql.*;
import java.io.*;
import oracle.jdbc.driver.*;

class GetValues {
public static void main (String args []) throws SQLException, ClassNotFoundException {

String driver_class = "oracle.jdbc.driver.OracleDriver";
String connect_string = "jdbc:oracle:thin:@127.0.0.1:1521:database";

String query = "begin :1 := sp_listEmp; end;"; //此处调用前面建立的函数！

Connection conn;
Class.forName(driver_class);

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

CallableStatement cstmt = conn.prepareCall(query);

cstmt.registerOutParameter(1,OracleTypes.CURSOR);
cstmt.execute();

ResultSet rset = (ResultSet)cstmt.getObject(1);
while (rset.next ())
System.out.println( rset.getString (1) + rset.getString (2) );
cstmt.close();
}
}