一:Java如何实现对存储过程的调用: 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.prepareCall("{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.prepareCall("{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.prepareCall("{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.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 ("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.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 ("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.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.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.prepareCall("{call OOP}"); ResultSet rs=c.executeQuery(); while(rs.next()) { String chinese=rs.getString("Chinese"); System.out.println (chinese); } conn.close(); } }
