Java调用Oracle的分页存储过程

01

create

or

replace

procedure

pro(

02

v_in_table_name

in

varchar2,

--表名

03

v_in_page_size

in

number,

--每页大小

04

v_in_page_now

in

number,

--当前页

05

v_out_page_count

out

number,

--页数

06

v_out_row_count

out

number,

--记录数

07

v_out_result_set

out

pkg.page_cursor

--结果集

08

)

is

09

v_sql_stmt varchar2(2000);

10

v_start_index number :=v_in_page_size*(v_in_page_now-1)+1;

--起始位置

11

v_end_index number :=v_in_page_size*v_in_page_now;

--结束位置

12

begin

13

v_sql_stmt:=

'select * from (select t.*, rownum rn from (select * from '

||v_in_table_name||

')t where rownum<='

||v_end_index||

')
where rn>='

||v_start_index;

14

open

v_out_result_set

for

v_sql_stmt;

--打开游标

15

v_sql_stmt:=

'select count(*)from '

||v_in_table_name;

16

execute

immediate v_sql_stmt

into

v_out_row_count;

--查询出记录数

17

--计算页数

18

if mod(v_out_row_count,v_in_page_size)=0

then

19

v_out_page_count:=v_out_row_count/v_in_page_size;

20

else

21

v_out_page_count:=v_out_row_count/v_in_page_size+1;

22

end

if;

23

end

;

01

package

com.wujilin.procedure;

02

03

import

java.sql.CallableStatement;

04

import

java.sql.Connection;

05

import

java.sql.DriverManager;

06

import

java.sql.ResultSet;

07

import

java.sql.ResultSetMetaData;

08

09

public

class

ProcedureTest {

10

public

static

void

main(String[] args){

11

String url =

"jdbc:oracle:thin:@127.0.0.1:1521:orcl"

;

12

String username =

"scott"

;

13

String password =

"tiger"

;

14

String driver =

"oracle.jdbc.driver.OracleDriver"

;

15

16

try

{

17

Class.forName(driver);

18

Connection conn = DriverManager.getConnection(url, username, password);

19

String sql =

"{call pro(?,?,?,?,?,?)}"

;

20

CallableStatement cstmt = conn.prepareCall(sql);

21

// 设置表名

22

cstmt.setString(

1

,

"emp"

);

23

// 设置每一页的记录数

24

cstmt.setInt(

2

,

4

);

25

// 设置当前页

26

cstmt.setInt(

3

,

2

);

27

// 注册总共的页数

28

cstmt.registerOutParameter(

4

, oracle.jdbc.OracleTypes.INTEGER);

29

// 注册总共的记录数

30

cstmt.registerOutParameter(

5

, oracle.jdbc.OracleTypes.INTEGER);

31

// 注册结果集

32

cstmt.registerOutParameter(

6

, oracle.jdbc.OracleTypes.CURSOR);

33

// 直接执行：execute()方法即可。

34

cstmt.execute();

35

// 将游标强制转换成ResultSet类型。

36

ResultSet rs = (ResultSet)cstmt.getObject(

6

);

37

int

pageCount = cstmt.getInt(

4

);

38

System.out.println(

"页数："

+ pageCount);

39

int

rowCount = cstmt.getInt(

5

);

40

System.out.println(

"记录数："

+ rowCount);

41

ResultSetMetaData rsmd = rs.getMetaData();

42

while

(rs.next()){

43

for

(

int

i =

0

; i < rsmd.getColumnCount(); i++){

44

System.out.print(rsmd.getColumnLabel(i +

1

)+ 

":"

+ rs.getObject(i +

1

)+

", "

);

45

}

46

System.out.println();

47

}

48

}

catch

(Exception e){

49

50

}

51

}

52

}