PL/SQL 分页

--分页查询
create or replace package testpackage as
type testcursor is ref cursor;
end testpackage;
/

--select * from (select rownum rn,a1.* from (select * from emp)a1 where rownum<=10) where rn>=6;
create or replace procedure zk_pro7(
  zk_table in varchar2,
  zk_pagesize in number,
  zk_pagenow in number,
  zk_rownum out number,
  zk_rowcount out number,
  zk_cursor out testpackage.testcursor)
is
  v_sql varchar2(1000);
  v_begin number:=(zk_pagenow-1)*zk_pagesize;
  v_end number:=zk_pagenow*zk_pagesize;
begin
  v_sql:='select * from (select rownum rn,a1.* from (select * from '||zk_table||')a1 where rownum<='||v_end||') where rn>='||v_begin;
  open zk_cursor for v_sql;
  v_sql:='select count(*) from '||zk_table;
  execute immediate v_sql into zk_rownum;
  if mod(zk_rownum,zk_pagesize)=0 then
    zk_rowcount := zk_rownum/zk_pagesize;
  else 
    zk_rowcount:=zk_rownum/zk_pagesize+1;
  end if;
  --关闭游标
  close zk_cursor;
end;
/

package com.gentle;

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

public class Test1 {
	
	private static Connection connection = null;
	private static CallableStatement statement = null;
	private static ResultSet resultSet = null;
	
	public static void main(String[] args) {
		conn();
	}
	
	static void conn() {
		try {
			Class.forName("oralce.jdbc.driver.OracleDriver");
			connection = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:ORACLE","scott","tiger");
			statement = connection.prepareCall("{call zk_pro7(?,?,?,?,?,?)}");
			statement.setString(1, "emp");
			statement.setInt(2, 3);
			statement.setInt(3, 1);
			statement.registerOutParameter(4, oracle.jdbc.OracleTypes.NUMBER);
			statement.registerOutParameter(5, oracle.jdbc.OracleTypes.NUMBER);
			statement.registerOutParameter(6, oracle.jdbc.OracleTypes.CURSOR);
			statement.execute();
			int rownum = statement.getInt(4);
			int rowcount = statement.getInt(5);
			System.out.println("rownum:" + rownum);
			System.out.println("rowcount:" + rowcount);
			resultSet = (ResultSet) statement.getObject(6);
			
			while(resultSet.next()) {
				resultSet.getString("ename");
				resultSet.getInt("sal");
				resultSet.getDate("hiredate");
				//....
			}
		} catch (ClassNotFoundException e) {
			e.printStackTrace();
		} catch (SQLException e) {
			e.printStackTrace();
		} finally {
			closeDB();
		}
		
	}
	
	static void closeDB() {
		if(connection!=null) {
			try {
				connection.close();
				connection = null;
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}
		if(statement!=null) {
			try {
				statement.close();
				statement = null;
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}
		if(resultSet!=null) {
			try {
				resultSet.close();
				resultSet = null;
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}
	}

}