oracle的存储过程和存储函数
2016-04-29 18:10
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示例的数据表下载的地址:http://download.csdn.net/detail/u010342038/9506955
示例1:
--第一个存储过程:打印Hello World
/*
调用存储过程:
要开启后台输入才能看到结果:set serveroutput on
只是调用一次
1.exce sayhelloworld();
可以调用多次
2.begin
sayhelloworld();
sayhelloworld();
...
...
end;
*/
create or replace procedure sayhelloworld
as
--说明部分(相当于PL/SQL declare)
begin
dbms_output.put_line('Hello Word');
end;
调用存储过程:
1.
set serveroutput on
exce sayhelloworld();
2.
set serveroutput on
begin
sayhelloworld();
sayhelloworld();
end;
示例2:
--创建一个带参数的存储过程(要用到out输出才能有返回值,这就和存储函数的差别)
--给指定的员工涨100钱的工资,并且打印涨前和涨后的薪水
--in是输入
create or replace procedure raisesalary(eno in number)
as
--定义一个变量保存涨前的薪水
psal emp.sal%type;
begin
--得到员工涨前的薪水
select sal into psal from emp where empno=eno;
--给员工涨100
update emp set sal=sal+100 where empno=eno;
--需不需要commit?
--注意一般不在存储过程和存储函数中,commit和rollback
dbms_output.put_line('涨前:'||psal||' 涨后:'||(psal+100));
end;
/*
如何调用:
begin
raisesalary(7369);
raisesalary(7499);
commit
end;
*/
示例3:
--创建存储函数(可以有返回值)
--获取某个员工的年薪(薪水和奖金)
create or replace function queryempincome(eno in number)
return number
as
--定义变量保存员工的薪水和奖金
psal emp.sal%type;
pcomm emp.comm%type;
begin
--得到该员工的月薪和奖金
select sal,comm into psal,pcomm from emp where empno=eno;
--直接返回年收入
--nvl函数的作用:如果pcomm为null,把pcomm赋值成0;
--如果没有加nvl,如果pcomm为null返回值会出现错误
return psal*12+nvl(pcomm,0);
end;
示例4:
--查询某个员工的信息
create or replace procedure queryempinform(eno in number,
pename out varchar2,
psal out number,
pjob out varchar2)
as
begin
--得到该员工的姓名、月薪和职位
select ename,sal,ejob into pename,psal,pjob from emp where empno=eno;
end;
用java来操作oracle的存储过程
连接oracle的工具类
package demo;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class JDBCUtils {
private static String driver = "oracle.jdbc.OracleDriver";
private static String url = "jdbc:oracle:thin:@localhost:1521:orcl";
private static String user = "demo";
private static String password = "demo";
//注册数据库的驱动
static{
try {
//java的驱动通过java反射
Class.forName(driver);
//Oracle的驱动
//DriverManager.registerDriver(driver);
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
//获取数据库的连接
public static Connection getConnection(){
try {
return DriverManager.getConnection(url, user, password);
} catch (SQLException e) {
e.printStackTrace();
}
return null;
}
public static void release(Connection conn,Statement st,ResultSet rs){
if(rs != null){
try {
rs.close();
} catch (SQLException e) {
e.printStackTrace();
}finally{
rs = null;
}
}
if(st != null){
try {
st.close();
} catch (SQLException e) {
e.printStackTrace();
}finally{
st =null;
}
}
if(conn != null){
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}finally{
conn = null;
}
}
}
}
Junit测试
示例1:
package test;
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.SQLException;
import oracle.jdbc.OracleTypes;
import org.junit.Test;
import demo.JDBCUtils;
public class TestProcedure {
/*
* create or replace procedure
* queryempinform(eno in number,
pename out varchar2,
psal out number,
pjob out varchar2)
*/
@Test
public void testProcedure(){
//{call <procedure-name>[(<arg1>,<arg2>,...)]}
String sql = "{call queryempinform(?,?,?,?)}";
Connection conn = null;
CallableStatement call = null;
try {
//得到一个连接
conn = JDBCUtils.getConnection();
//通过连接创建出statment
System.out.println(sql);
call = conn.prepareCall(sql);
//对于in参数,赋值(1相当于第一个?)
call.setInt(1, 7839);
//对于out参数,申明
call.registerOutParameter(2, OracleTypes.VARCHAR);
call.registerOutParameter(3, OracleTypes.NUMBER);
call.registerOutParameter(4, OracleTypes.VARCHAR);
//执行调用
call.execute();
//取出结果
String name = call.getString(2);
double sal = call.getDouble(3);
String job = call.getString(4);
System.out.println(name+"\t"+sal+"\t"+job);
} catch (SQLException e) {
e.printStackTrace();
}finally{
JDBCUtils.release(conn, call, null);
}
}
}
用java来操作oracle的存储函数
示例2:
package test;
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.SQLException;
import oracle.jdbc.OracleTypes;
import org.junit.Test;
import demo.JDBCUtils;
public class TestFunction {
/*
* create or replace function queryempincome(eno in number)
*/
@Test
public void testFunction(){
//{?= call <procedure-name[(<arg1>,<arg2>,...)]>}
String sql = "{? = call queryempincome(?)}";
Connection conn = null;
CallableStatement call = null;
try {
//得到数据库连接
conn = JDBCUtils.getConnection();
//基于连接创建statment
call = conn.prepareCall(sql);
//对于输出参数,申明
call.registerOutParameter(1, OracleTypes.NUMBER);
//对于输入参数,赋值
call.setInt(2, 7839);
//执行调用
call.execute();
//取出年收入的结果
double income = call.getDouble(1);
System.out.println("该员工的年收入是:"+income);
} catch (SQLException e) {
e.printStackTrace();
}finally{
JDBCUtils.release(conn, call, null);
}
}
}
用java来操作oracle的程序包
示例:3:
oracle的存储过程程序包:
程序包:
CREATE OR REPLACE
PACKAGE MYPACKAGE AS
--把光标(cursor)的类型赋给empcursor
type empcursor is ref cursor;
procedure queryEmpList(dno in number,empList out empcursor);
END MYPACKAGE;
程序包主体:
CREATE OR REPLACE
PACKAGE BODY MYPACKAGE AS
procedure queryEmpList(dno in number,empList out empcursor) AS
BEGIN
--打开光标
open empList for select * from emp where deptno = dno;
END queryEmpList;
END MYPACKAGE;
java代码:
package test;
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import oracle.jdbc.OracleCallableStatement;
import oracle.jdbc.internal.OracleTypes;
import org.junit.Test;
import demo.JDBCUtils;
public class TestCursor {
/*
* PACKAGE MYPACKAGE AS
--把光标(cursor)的类型赋给empcursor
type empcursor is ref cursor;
procedure queryEmpList(dno in number,empList out empcursor);
END MYPACKAGE;
*/
@Test
public void testCursor(){
//{call <procedure-name>[(<arg1>,<arg2>,...)]}
String sql = "{call MYPACKAGE.queryEmpList(?,?)}";
Connection conn = null;
CallableStatement call = null;
ResultSet rs = null;
try {
//获取数据库的连接
conn = JDBCUtils.getConnection();
//基于连接创建statement
call = conn.prepareCall(sql);
//对于in参数,赋值(10是部门号)
call.setInt(1, 10);
//对于out参数,申明
call.registerOutParameter(2, OracleTypes.CURSOR);
//执行调用
call.execute();
//取出该部门中所有员工的信息
rs = ((OracleCallableStatement)call).getCursor(2);
while(rs.next()){
//取出该员工的员工号,姓名、薪水和职位
int empno = rs.getInt("empno");
String name = rs.getString("ename");
double sal = rs.getDouble("sal");
String job = rs.getString("ejob");
System.out.println(empno+"\t"+name+"\t"+sal+"\t"+job);
}
} catch (SQLException e) {
e.printStackTrace();
}finally{
JDBCUtils.release(conn, call, rs);
}
}
}
示例1:
--第一个存储过程:打印Hello World
/*
调用存储过程:
要开启后台输入才能看到结果:set serveroutput on
只是调用一次
1.exce sayhelloworld();
可以调用多次
2.begin
sayhelloworld();
sayhelloworld();
...
...
end;
*/
create or replace procedure sayhelloworld
as
--说明部分(相当于PL/SQL declare)
begin
dbms_output.put_line('Hello Word');
end;
调用存储过程:
1.
set serveroutput on
exce sayhelloworld();
2.
set serveroutput on
begin
sayhelloworld();
sayhelloworld();
end;
示例2:
--创建一个带参数的存储过程(要用到out输出才能有返回值,这就和存储函数的差别)
--给指定的员工涨100钱的工资,并且打印涨前和涨后的薪水
--in是输入
create or replace procedure raisesalary(eno in number)
as
--定义一个变量保存涨前的薪水
psal emp.sal%type;
begin
--得到员工涨前的薪水
select sal into psal from emp where empno=eno;
--给员工涨100
update emp set sal=sal+100 where empno=eno;
--需不需要commit?
--注意一般不在存储过程和存储函数中,commit和rollback
dbms_output.put_line('涨前:'||psal||' 涨后:'||(psal+100));
end;
/*
如何调用:
begin
raisesalary(7369);
raisesalary(7499);
commit
end;
*/
示例3:
--创建存储函数(可以有返回值)
--获取某个员工的年薪(薪水和奖金)
create or replace function queryempincome(eno in number)
return number
as
--定义变量保存员工的薪水和奖金
psal emp.sal%type;
pcomm emp.comm%type;
begin
--得到该员工的月薪和奖金
select sal,comm into psal,pcomm from emp where empno=eno;
--直接返回年收入
--nvl函数的作用:如果pcomm为null,把pcomm赋值成0;
--如果没有加nvl,如果pcomm为null返回值会出现错误
return psal*12+nvl(pcomm,0);
end;
示例4:
--查询某个员工的信息
create or replace procedure queryempinform(eno in number,
pename out varchar2,
psal out number,
pjob out varchar2)
as
begin
--得到该员工的姓名、月薪和职位
select ename,sal,ejob into pename,psal,pjob from emp where empno=eno;
end;
用java来操作oracle的存储过程
连接oracle的工具类
package demo;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class JDBCUtils {
private static String driver = "oracle.jdbc.OracleDriver";
private static String url = "jdbc:oracle:thin:@localhost:1521:orcl";
private static String user = "demo";
private static String password = "demo";
//注册数据库的驱动
static{
try {
//java的驱动通过java反射
Class.forName(driver);
//Oracle的驱动
//DriverManager.registerDriver(driver);
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
//获取数据库的连接
public static Connection getConnection(){
try {
return DriverManager.getConnection(url, user, password);
} catch (SQLException e) {
e.printStackTrace();
}
return null;
}
public static void release(Connection conn,Statement st,ResultSet rs){
if(rs != null){
try {
rs.close();
} catch (SQLException e) {
e.printStackTrace();
}finally{
rs = null;
}
}
if(st != null){
try {
st.close();
} catch (SQLException e) {
e.printStackTrace();
}finally{
st =null;
}
}
if(conn != null){
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}finally{
conn = null;
}
}
}
}
Junit测试
示例1:
package test;
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.SQLException;
import oracle.jdbc.OracleTypes;
import org.junit.Test;
import demo.JDBCUtils;
public class TestProcedure {
/*
* create or replace procedure
* queryempinform(eno in number,
pename out varchar2,
psal out number,
pjob out varchar2)
*/
@Test
public void testProcedure(){
//{call <procedure-name>[(<arg1>,<arg2>,...)]}
String sql = "{call queryempinform(?,?,?,?)}";
Connection conn = null;
CallableStatement call = null;
try {
//得到一个连接
conn = JDBCUtils.getConnection();
//通过连接创建出statment
System.out.println(sql);
call = conn.prepareCall(sql);
//对于in参数,赋值(1相当于第一个?)
call.setInt(1, 7839);
//对于out参数,申明
call.registerOutParameter(2, OracleTypes.VARCHAR);
call.registerOutParameter(3, OracleTypes.NUMBER);
call.registerOutParameter(4, OracleTypes.VARCHAR);
//执行调用
call.execute();
//取出结果
String name = call.getString(2);
double sal = call.getDouble(3);
String job = call.getString(4);
System.out.println(name+"\t"+sal+"\t"+job);
} catch (SQLException e) {
e.printStackTrace();
}finally{
JDBCUtils.release(conn, call, null);
}
}
}
用java来操作oracle的存储函数
示例2:
package test;
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.SQLException;
import oracle.jdbc.OracleTypes;
import org.junit.Test;
import demo.JDBCUtils;
public class TestFunction {
/*
* create or replace function queryempincome(eno in number)
*/
@Test
public void testFunction(){
//{?= call <procedure-name[(<arg1>,<arg2>,...)]>}
String sql = "{? = call queryempincome(?)}";
Connection conn = null;
CallableStatement call = null;
try {
//得到数据库连接
conn = JDBCUtils.getConnection();
//基于连接创建statment
call = conn.prepareCall(sql);
//对于输出参数,申明
call.registerOutParameter(1, OracleTypes.NUMBER);
//对于输入参数,赋值
call.setInt(2, 7839);
//执行调用
call.execute();
//取出年收入的结果
double income = call.getDouble(1);
System.out.println("该员工的年收入是:"+income);
} catch (SQLException e) {
e.printStackTrace();
}finally{
JDBCUtils.release(conn, call, null);
}
}
}
用java来操作oracle的程序包
示例:3:
oracle的存储过程程序包:
程序包:
CREATE OR REPLACE
PACKAGE MYPACKAGE AS
--把光标(cursor)的类型赋给empcursor
type empcursor is ref cursor;
procedure queryEmpList(dno in number,empList out empcursor);
END MYPACKAGE;
程序包主体:
CREATE OR REPLACE
PACKAGE BODY MYPACKAGE AS
procedure queryEmpList(dno in number,empList out empcursor) AS
BEGIN
--打开光标
open empList for select * from emp where deptno = dno;
END queryEmpList;
END MYPACKAGE;
java代码:
package test;
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import oracle.jdbc.OracleCallableStatement;
import oracle.jdbc.internal.OracleTypes;
import org.junit.Test;
import demo.JDBCUtils;
public class TestCursor {
/*
* PACKAGE MYPACKAGE AS
--把光标(cursor)的类型赋给empcursor
type empcursor is ref cursor;
procedure queryEmpList(dno in number,empList out empcursor);
END MYPACKAGE;
*/
@Test
public void testCursor(){
//{call <procedure-name>[(<arg1>,<arg2>,...)]}
String sql = "{call MYPACKAGE.queryEmpList(?,?)}";
Connection conn = null;
CallableStatement call = null;
ResultSet rs = null;
try {
//获取数据库的连接
conn = JDBCUtils.getConnection();
//基于连接创建statement
call = conn.prepareCall(sql);
//对于in参数,赋值(10是部门号)
call.setInt(1, 10);
//对于out参数,申明
call.registerOutParameter(2, OracleTypes.CURSOR);
//执行调用
call.execute();
//取出该部门中所有员工的信息
rs = ((OracleCallableStatement)call).getCursor(2);
while(rs.next()){
//取出该员工的员工号,姓名、薪水和职位
int empno = rs.getInt("empno");
String name = rs.getString("ename");
double sal = rs.getDouble("sal");
String job = rs.getString("ejob");
System.out.println(empno+"\t"+name+"\t"+sal+"\t"+job);
}
} catch (SQLException e) {
e.printStackTrace();
}finally{
JDBCUtils.release(conn, call, rs);
}
}
}
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