数据库存储过程示例

JAVA中对存储过程的调用方法

转载地址：http://blog.163.com/chhb5566/blog/static/3546695520088290281270/

A:不带输出参数的
  ---------------不带输出参数的----------------------------------
create procedure getsum
@n int =0<--此处为参数-->
as
declare @sum int<--定义变量-->
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中执行:--------------------
exec getsum 100
 
 
------------在JAVA中调用:---------------------
JAVA可以调用 但是在JAVA程序却不能去显示该存储过程的结果 因为上面的存储
过程的参数类型int 传递方式是in(按值)方式
import java.sql.*;
public class ProcedureTest 
{
public static void main(String args[]) throws Exception
{
//加载驱动
DriverManager.registerDriver(new sun.jdbc.odbc.JdbcOdbcDriver());
//获得连接
Connection conn=DriverManager.getConnection("jdbc:odbc:mydata","sa","");
 
 
    //创建存储过程的对象
    CallableStatement c=conn.divpareCall("{call getsum(?)}");
    
    //给存储过程的参数设置值
    c.setInt(1,100); //将第一个参数的值设置成100
    
    //执行存储过程
    c.execute();
    conn.close();
}
}
  
B:带输出参数的
  1:返回int
    -------------------------带输出参数的----------------
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
  -------------------在查询分析器中执行------------
declare @myResult int
exec getsum 100,@myResult output
print @myResult
 
 
 
  ------------在JAVA中调用---------------------
import java.sql.*;
public class ProcedureTest 
{
public static void main(String args[]) throws Exception
{
//加载驱动
DriverManager.registerDriver(new sun.jdbc.odbc.JdbcOdbcDriver());
//获得连接
Connection conn=DriverManager.getConnection("jdbc:odbc:mydata","sa","");
 
 
    //创建存储过程的对象
    CallableStatement c=conn.divpareCall("{call getsum(?,?)}");
    
    //给存储过程的第一个参数设置值
    c.setInt(1,100);
    
    //注册存储过程的第二个参数
    c.registerOutParameter(2,java.sql.Types.INTEGER);
    
    //执行存储过程
    c.execute();
    
    //得到存储过程的输出参数值
    System.out.println (c.getInt(2));
    conn.close();
}
}
  2:返回varchar
    ----------------存储过程带游标----------------
---在存储过程中带游标   使用游标不停的遍历orderid
create procedure CursorIntoProcedure
@pname varchar(8000) output
as
--定义游标
declare cur cursor for select orderid from orders
--定义一个变量来接收游标的值
declare @v varchar(5)
--打开游标
open cur
set @pname=''--给@pname初值
--提取游标的值
fetch next from cur into @v
while @@fetch_status=0
begin
 
 
set @pname=@pname+';'+@v
fetch next from cur into @v
end
print @pname
--关闭游标
close cur
--销毁游标
deallocate cur
 
 
 
------------执行存储过程--------------
exec CursorIntoProcedure ''
 
 
--------------JAVA调用------------------
import java.sql.*;
public class ProcedureTest 
{
public static void main(String args[]) throws Exception
{
//加载驱动
DriverManager.registerDriver(new sun.jdbc.odbc.JdbcOdbcDriver());
//获得连接
Connection conn=DriverManager.getConnection("jdbc:odbc:mydata","sa","");
CallableStatement c=conn.divpareCall("{call CursorIntoProcedure(?)}");
 
 
c.registerOutParameter(1,java.sql.Types.VARCHAR);
 
c.execute();
 
System.out.println (c.getString(1));
conn.close();
}
}
C:删除数据的存储过程
  ------------------存储过程--------------------------
 
 
drop table 学生基本信息表
create table 学生基本信息表
(
StuID int primary key,
StuName varchar(10),
StuAddress varchar(20)
)
insert into 学生基本信息表 values(1,'三毛','wuhan')
insert into 学生基本信息表 values(2,'三毛','wuhan')
create table 学生成绩表
(
StuID int,
Chinese int,
PyhSics int
foreign key(StuID) references 学生基本信息表(StuID)
on delete cascade
on update cascade
) 
insert into 学生成绩表 values(1,99,100)
insert into 学生成绩表 values(2,99,100)
 
 
--创建存储过程 
create procedure delePro
@StuID int
as
delete from 学生基本信息表 where StuID=@StuID
--创建完毕
exec delePro 1 --执行存储过程
--创建存储过程
create procedure selePro
as
select * from 学生基本信息表
--创建完毕
exec selePro   --执行存储过程
  ------------------在JAVA中调用----------------
import java.sql.*;
public class ProcedureTest 
{
public static void main(String args[]) throws Exception
{
//加载驱动
DriverManager.registerDriver(new sun.jdbc.odbc.JdbcOdbcDriver());
//获得连接
Connection conn=DriverManager.getConnection("jdbc:odbc:mydata","sa","");
 
 
    //创建存储过程的对象
    CallableStatement c=conn.divpareCall("{call delePro(?)}");
    
    c.setInt(1,1);
    
    c.execute();
    
    c=conn.divpareCall("{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 ("学号:"+"   "+"姓名:"+"   "+"地址");
      System.out.println (Stu+"   "+name+"   "+add);
    }
    c.close();
}
}
D:修改数据的存储过程
---------------------创建存储过程---------------------
create procedure ModPro
@StuID int,
@StuName varchar(10)
as
update 学生基本信息表 set StuName=@StuName where StuID=@StuID
 
 
 
-------------执行存储过程-------------------------
exec ModPro 2,'四毛'
---------------JAVA调用存储过程--------------------
import java.sql.*;
public class ProcedureTest 
{
public static void main(String args[]) throws Exception
{
//加载驱动
DriverManager.registerDriver(new sun.jdbc.odbc.JdbcOdbcDriver());
//获得连接
Connection conn=DriverManager.getConnection("jdbc:odbc:mydata","sa","");
 
 
    //创建存储过程的对象
    CallableStatement c=conn.divpareCall("{call ModPro(?,?)}");
    
    c.setInt(1,2);
    c.setString(2,"美女");
          
    c.execute();
    
    c=conn.divpareCall("{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 ("学号:"+"   "+"姓名:"+"   "+"地址");
      System.out.println (Stu+"   "+name+"   "+add);
    }
    c.close();
}
}
E:查询数据的存储过程(模糊查询)
  -----------------存储过程---------------------
create procedure FindCusts
@cust varchar(10)
as
select customerid from orders where customerid 
like '%'+@cust+'%'
  ---------------执行---------------------------
execute FindCusts 'alfki'
  -------------在JAVA中调用--------------------------
import java.sql.*;
public class ProcedureTest 
{
public static void main(String args[]) throws Exception
{
//加载驱动
DriverManager.registerDriver(new sun.jdbc.odbc.JdbcOdbcDriver());
//获得连接
Connection conn=DriverManager.getConnection("jdbc:odbc:mydata","sa","");
 
 
    //创建存储过程的对象
    CallableStatement c=conn.divpareCall("{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:增加数据的存储过程
 
 
------------存储过程--------------------
create procedure InsertPro
@StuID int,
@StuName varchar(10),
@StuAddress varchar(20)
as
insert into 学生基本信息表 values(@StuID,@StuName,@StuAddress)
 
 
-----------调用存储过程---------------
exec InsertPro 5,'555','555'
-----------在JAVA中执行-------------
import java.sql.*;
public class ProcedureTest 
{
public static void main(String args[]) throws Exception
{
//加载驱动
DriverManager.registerDriver(new sun.jdbc.odbc.JdbcOdbcDriver());
//获得连接
Connection conn=DriverManager.getConnection("jdbc:odbc:mydata","sa","");
 
 
    //创建存储过程的对象
    CallableStatement c=conn.divpareCall("{call InsertPro(?,?,?)}");
    c.setInt(1,6);
    c.setString(2,"Liu");
    c.setString(3,"wuhan");
    
    c.execute();
    
    c=conn.divpareCall("{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中创建存储过程 并且在JAVA中直接调用
import java.sql.*;
public class ProcedureTest 
{
public static void main(String args[]) throws Exception
{
//加载驱动
DriverManager.registerDriver(new sun.jdbc.odbc.JdbcOdbcDriver());
//获得连接
Connection conn=DriverManager.getConnection("jdbc:odbc:mydata","sa","");
 
 
Statement stmt=conn.createStatement();
//在JAVA中创建存储过程
stmt.executeUpdate("create procedure OOP as select * from 学生成绩表");
 
 
CallableStatement c=conn.divpareCall("{call OOP}");
 
ResultSet rs=c.executeQuery();
while(rs.next())
{
  String chinese=rs.getString("Chinese");
  
  System.out.println (chinese);
}
conn.close();
 
}
}