一、Java怎樣實現(xiàn)對存儲過程的調(diào)用： A：不帶輸出參數(shù)的
create procedure getsum @n int =0<--此處為參數(shù)--> 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))) |
exec getsum 100
在JAVA中調(diào)用：
JAVA能夠調(diào)用 可是在JAVA程序卻不能去顯示該存儲過程的結(jié)果 由于上面的存儲過程的參數(shù)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 { //載入驅(qū)動 DriverManager.registerDriver(new sun.jdbc.odbc.JdbcOdbcDriver()); //獲得連接 Connection conn=DriverManager.getConnection("jdbc:odbc:mydata","sa",""); //創(chuàng)建存儲過程的對象 CallableStatement c=conn.prepareCall("{call getsum(?)}"); //給存儲過程的參數(shù)設(shè)置值 c.setInt(1,100); //將第一個參數(shù)的值設(shè)置成100 //運行存儲過程 c.execute(); conn.close(); } } |
B：帶輸出參數(shù)的
1:返回int
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 |
在查詢分析器中運行：
declare @myResult int
exec getsum 100,@myResult output
print @myResult
在JAVA中調(diào)用：
import java.sql.*; public class ProcedureTest { public static void main(String args[]) throws Exception { //載入驅(qū)動 DriverManager.registerDriver(new sun.jdbc.odbc.JdbcOdbcDriver()); //獲得連接 Connection conn=DriverManager.getConnection("jdbc:odbc:mydata","sa",""); //創(chuàng)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(shù)設(shè)置值 c.setInt(1,100); //注冊存儲過程的第二個參數(shù) c.registerOutParameter(2,java.sql.Types.INTEGER); //運行存儲過程 c.execute(); //得到存儲過程的輸出參數(shù)值 System.out.println (c.getInt(2)); conn.close(); } } |
2:返回varchar
存儲過程帶游標(biāo)：
在存儲過程中帶游標(biāo) 使用游標(biāo)不停的遍歷orderid
create procedure CursorIntoProcedure
@pname varchar(8000) output
as
--定義游標(biāo)
declare cur cursor for select orderid from orders
--定義一個變量來接收游標(biāo)的值
declare @v varchar(5)
--打開游標(biāo)
open cur
set @pname=''--給@pname初值
--提取游標(biāo)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(guān)閉游標(biāo)
close cur
--銷毀游標(biāo)
deallocate cur
運行存儲過程：
exec CursorIntoProcedure ''
JAVA調(diào)用：
import java.sql.*; public class ProcedureTest { public static void main(String args[]) throws Exception { //載入驅(qū)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(shù)據(jù)的存儲過程
存儲過程：
drop table 學(xué)生基本信息表 create table 學(xué)生基本信息表 ( StuID int primary key, StuName varchar(10), StuAddress varchar(20) ) insert into 學(xué)生基本信息表 values(1,'三毛','wuhan') insert into 學(xué)生基本信息表 values(2,'三毛','wuhan') create table 學(xué)生成績表 ( StuID int, Chinese int, PyhSics int foreign key(StuID) references 學(xué)生基本信息表(StuID) on delete cascade on update cascade ) insert into 學(xué)生成績表 values(1,99,100) insert into 學(xué)生成績表 values(2,99,100) |
創(chuàng)建存儲過程：
create procedure delePro
@StuID int
as
delete from 學(xué)生基本信息表 where StuID=@StuID
--創(chuàng)建完成
exec delePro 1 --運行存儲過程
--創(chuàng)建存儲過程
create procedure selePro
as
select * from 學(xué)生基本信息表
--創(chuàng)建完成
exec selePro --運行存儲過程
在JAVA中調(diào)用：
import java.sql.*; public class ProcedureTest { public static void main(String args[]) throws Exception { //載入驅(qū)動 DriverManager.registerDriver(new sun.jdbc.odbc.JdbcOdbcDriver()); //獲得連接 Connection conn=DriverManager.getConnection("jdbc:odbc:mydata","sa",""); //創(chuàng)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(xué)號:"+" "+"姓名:"+" "+"地址"); System.out.println (Stu+" "+name+" "+add); } c.close(); } } |
D：改動數(shù)據(jù)的存儲過程
創(chuàng)建存儲過程：
create procedure ModPro
@StuID int,
@StuName varchar(10)
as
update 學(xué)生基本信息表 set StuName=@StuName where StuID=@StuID
運行存儲過程：
exec ModPro 2,'四毛'
JAVA調(diào)用存儲過程：
import java.sql.*; public class ProcedureTest { public static void main(String args[]) throws Exception { //載入驅(qū)動 DriverManager.registerDriver(new sun.jdbc.odbc.JdbcOdbcDriver()); //獲得連接 Connection conn=DriverManager.getConnection("jdbc:odbc:mydata","sa",""); //創(chuàng)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(xué)號:"+" "+"姓名:"+" "+"地址"); System.out.println (Stu+" "+name+" "+add); } c.close(); } } |
E：查詢數(shù)據(jù)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+'%'
運行：
execute FindCusts 'alfki'
在JAVA中調(diào)用：
import java.sql.*; public class ProcedureTest { public static void main(String args[]) throws Exception { //載入驅(qū)動 DriverManager.registerDriver(new sun.jdbc.odbc.JdbcOdbcDriver()); //獲得連接 Connection conn=DriverManager.getConnection("jdbc:odbc:mydata","sa",""); //創(chuàng)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：添加數(shù)據(jù)的存儲過程
存儲過程：
create procedure InsertPro
@StuID int,
@StuName varchar(10),
@StuAddress varchar(20)
as
insert into 學(xué)生基本信息表 values(@StuID,@StuName,@StuAddress)
調(diào)用存儲過程：
exec InsertPro 5,'555','555'
在JAVA中運行：
import java.sql.*; public class ProcedureTest { public static void main(String args[]) throws Exception { //載入驅(qū)動 DriverManager.registerDriver(new sun.jdbc.odbc.JdbcOdbcDriver()); //獲得連接 Connection conn=DriverManager.getConnection("jdbc:odbc:mydata","sa",""); //創(chuàng)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(chuàng)建存儲過程 而且在JAVA中直接調(diào)用
import java.sql.*; public class ProcedureTest { public static void main(String args[]) throws Exception { //載入驅(qū)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(chuàng)建存儲過程 stmt.executeUpdate("create procedure OOP as select * from 學(xué)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(); } } |
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