一:Java如何實現對存儲過程的調用:
A:不帶輸出參數的
---------------不帶輸出參數的----------------------------------
create procedure getsum
@n int =0<--此處爲參數-->
as
declare @sum int<--定義變量-->
declare @i int
set @sum=0
set @i=0
while @i<=@n begin
set @sum=@sum+@i
set @i=@i+1
end
print 'the sum is '+ltrim(rtrim(str(@sum)))
--------------在SQL中執行:--------------------
exec getsum 100
------------在JAVA中調用:---------------------
JAVA可以調用 但是在JAVA程序卻不能去顯示該存儲過程的結果 因爲上面的存儲
過程的參數類型int 傳遞方式是in(按值)方式
import java.sql.*;
public class ProcedureTest
{
public static void main(String args[]) throws Exception
{
//加載驅動
DriverManager.registerDriver(new sun.jdbc.odbc.JdbcOdbcDriver());
//獲得連接
Connection conn=DriverManager.getConnection("jdbc:odbc:mydata","sa","");
//創建存儲過程的對象
CallableStatement c=conn.prepareCall("{call getsum(?)}");
//給存儲過程的參數設置值
c.setInt(1,100); //將第一個參數的值設置成100
//執行存儲過程
c.execute();
conn.close();
}
}
B:帶輸出參數的
1:返回int
-------------------------帶輸出參數的----------------
alter procedure getsum
@n int =0,
@result int output
as
declare @sum int
declare @i int
set @sum=0
set @i=0
while @i<=@n begin
set @sum=@sum+@i
set @i=@i+1
end
set @result=@sum
-------------------在查詢分析器中執行------------
declare @myResult int
exec getsum 100,@myResult output
print @myResult
------------在JAVA中調用---------------------
import java.sql.*;
public class ProcedureTest
{
public static void main(String args[]) throws Exception
{
//加載驅動
DriverManager.registerDriver(new sun.jdbc.odbc.JdbcOdbcDriver());
//獲得連接
Connection conn=DriverManager.getConnection("jdbc:odbc:mydata","sa","");
//創建存儲過程的對象
CallableStatement c=conn.prepareCall("{call getsum(?,?)}");
//給存儲過程的第一個參數設置值
c.setInt(1,100);
//註冊存儲過程的第二個參數
c.registerOutParameter(2,java.sql.Types.INTEGER);
//執行存儲過程
c.execute();
//得到存儲過程的輸出參數值
System.out.println (c.getInt(2));
conn.close();
}
}
2:返回varchar
----------------存儲過程帶遊標----------------
---在存儲過程中帶遊標 使用遊標不停的遍歷orderid
create procedure CursorIntoProcedure
@pname varchar(8000) output
as
--定義遊標
declare cur cursor for select orderid from orders
--定義一個變量來接收遊標的值
declare @v varchar(5)
--打開遊標
open cur
set @pname=''--給@pname初值
--提取遊標的值
fetch next from cur into @v
while @@fetch_status=0
begin
set @pname=@pname+';'+@v
fetch next from cur into @v
end
print @pname
--關閉遊標
close cur
--銷燬遊標
deallocate cur
------------執行存儲過程--------------
exec CursorIntoProcedure ''
--------------JAVA調用------------------
import java.sql.*;
public class ProcedureTest
{
public static void main(String args[]) throws Exception
{
//加載驅動
DriverManager.registerDriver(new sun.jdbc.odbc.JdbcOdbcDriver());
//獲得連接
Connection conn=DriverManager.getConnection("jdbc:odbc:mydata","sa","");
CallableStatement c=conn.prepareCall("{call CursorIntoProcedure(?)}");
c.registerOutParameter(1,java.sql.Types.VARCHAR);
c.execute();
System.out.println (c.getString(1));
conn.close();
}
}
C:刪除數據的存儲過程
------------------存儲過程--------------------------
drop table 學生基本信息表
create table 學生基本信息表
(
StuID int primary key,
StuName varchar(10),
StuAddress varchar(20)
)
insert into 學生基本信息表 values(1,'三毛','wuhan')
insert into 學生基本信息表 values(2,'三毛','wuhan')
create table 學生成績表
(
StuID int,
Chinese int,
PyhSics int
foreign key(StuID) references 學生基本信息表(StuID)
on delete cascade
on update cascade
)
insert into 學生成績表 values(1,99,100)
insert into 學生成績表 values(2,99,100)
--創建存儲過程
create procedure delePro
@StuID int
as
delete from 學生基本信息表 where StuID=@StuID
--創建完畢
exec delePro 1 --執行存儲過程
--創建存儲過程
create procedure selePro
as
select * from 學生基本信息表
--創建完畢
exec selePro --執行存儲過程
------------------在JAVA中調用----------------
import java.sql.*;
public class ProcedureTest
{
public static void main(String args[]) throws Exception
{
//加載驅動
DriverManager.registerDriver(new sun.jdbc.odbc.JdbcOdbcDriver());
//獲得連接
Connection conn=DriverManager.getConnection("jdbc:odbc:mydata","sa","");
//創建存儲過程的對象
CallableStatement c=conn.prepareCall("{call delePro(?)}");
c.setInt(1,1);
c.execute();
c=conn.prepareCall("{call selePro}");
ResultSet rs=c.executeQuery();
while(rs.next())
{
String Stu=rs.getString("StuID");
String name=rs.getString("StuName");
String add=rs.getString("StuAddress");
System.out.println ("學號:"+" "+"姓名:"+" "+"地址");
System.out.println (Stu+" "+name+" "+add);
}
c.close();
}
}
D:修改數據的存儲過程
---------------------創建存儲過程---------------------
create procedure ModPro
@StuID int,
@StuName varchar(10)
as
update 學生基本信息表 set StuName=@StuName where StuID=@StuID
-------------執行存儲過程-------------------------
exec ModPro 2,'四毛'
---------------JAVA調用存儲過程--------------------
import java.sql.*;
public class ProcedureTest
{
public static void main(String args[]) throws Exception
{
//加載驅動
DriverManager.registerDriver(new sun.jdbc.odbc.JdbcOdbcDriver());
//獲得連接
Connection conn=DriverManager.getConnection("jdbc:odbc:mydata","sa","");
//創建存儲過程的對象
CallableStatement c=conn.prepareCall("{call ModPro(?,?)}");
c.setInt(1,2);
c.setString(2,"美女");
c.execute();
c=conn.prepareCall("{call selePro}");
ResultSet rs=c.executeQuery();
while(rs.next())
{
String Stu=rs.getString("StuID");
String name=rs.getString("StuName");
String add=rs.getString("StuAddress");
System.out.println ("學號:"+" "+"姓名:"+" "+"地址");
System.out.println (Stu+" "+name+" "+add);
}
c.close();
}
}
E:查詢數據的存儲過程(模糊查詢)
-----------------存儲過程---------------------
create procedure FindCusts
@cust varchar(10)
as
select customerid from orders where customerid
like '%'+@cust+'%'
---------------執行---------------------------
execute FindCusts 'alfki'
-------------在JAVA中調用--------------------------
import java.sql.*;
public class ProcedureTest
{
public static void main(String args[]) throws Exception
{
//加載驅動
DriverManager.registerDriver(new sun.jdbc.odbc.JdbcOdbcDriver());
//獲得連接
Connection conn=DriverManager.getConnection("jdbc:odbc:mydata","sa","");
//創建存儲過程的對象
CallableStatement c=conn.prepareCall("{call FindCusts(?)}");
c.setString(1,"Tom");
ResultSet rs=c.executeQuery();
while(rs.next())
{
String cust=rs.getString("customerid");
System.out.println (cust);
}
c.close();
}
}
F:增加數據的存儲過程
------------存儲過程--------------------
create procedure InsertPro
@StuID int,
@StuName varchar(10),
@StuAddress varchar(20)
as
insert into 學生基本信息表 values(@StuID,@StuName,@StuAddress)
-----------調用存儲過程---------------
exec InsertPro 5,'555','555'
-----------在JAVA中執行-------------
import java.sql.*;
public class ProcedureTest
{
public static void main(String args[]) throws Exception
{
//加載驅動
DriverManager.registerDriver(new sun.jdbc.odbc.JdbcOdbcDriver());
//獲得連接
Connection conn=DriverManager.getConnection("jdbc:odbc:mydata","sa","");
//創建存儲過程的對象
CallableStatement c=conn.prepareCall("{call InsertPro(?,?,?)}");
c.setInt(1,6);
c.setString(2,"Liu");
c.setString(3,"wuhan");
c.execute();
c=conn.prepareCall("{call selePro}");
ResultSet rs=c.executeQuery();
while(rs.next())
{
String stuid=rs.getString("StuID");
String name=rs.getString("StuName");
String address=rs.getString("StuAddress");
System.out.println (stuid+" "+name+" "+address);
}
c.close();
}
}
G:在JAVA中創建存儲過程 並且在JAVA中直接調用
import java.sql.*;
public class ProcedureTest
{
public static void main(String args[]) throws Exception
{
//加載驅動
DriverManager.registerDriver(new sun.jdbc.odbc.JdbcOdbcDriver());
//獲得連接
Connection conn=DriverManager.getConnection("jdbc:odbc:mydata","sa","");
Statement stmt=conn.createStatement();
//在JAVA中創建存儲過程
stmt.executeUpdate("create procedure OOP as select * from 學生成績表");
CallableStatement c=conn.prepareCall("{call OOP}");
ResultSet rs=c.executeQuery();
while(rs.next())
{
String chinese=rs.getString("Chinese");
System.out.println (chinese);
}
conn.close();
}
}