例子一:
1、新建表test
create table test(
field1 int not null
)
TYPE=MyISAM ;
insert into test(field1) values(1);
2、删除已存在的存储过程
-- 删除储存过程
delimiter // -- 定义结束符号
drop procedure p_test;//
3、mysql存储过程定义
create procedure p_test()
begin
declare temp int;
set temp = 0;
update test set field1 =temp;
end
//
4、调用方法
call p_test();
import java.sql.*;
public class Test Conn{
private Connection getConn(){
Connection conn = null;
try {
Class.forName("org.gjt.mm.mysql.Driver");
try {
conn =
DriverManager.getConnection("jdbc:mysql://127.0.0.
1:3306/test?useUnicode=true&
characterEncoding=GBK","root","ntsky");
} catch (SQLException e1) {
e1.printStackTrace();
}
}
catch (ClassNotFoundException e) {
e.printStackTrace();
}
return conn;
}
public void testC() {
Connection conn = getConn();
ResultSet rs = null;
CallableStatement cs = null;
String a = null;
try {
CallableStatement cStmt = conn.prepareCall("{call
p_test()}");
cStmt.executeUpdate();
} catch (Exception e) {
System.out.println("hahad" + e.getMessage());
} finally {
try {
conn.close();
} catch (Exception ex) {
System.out.println("ex : " + ex.getMessage());
}
}
}
public static void main(String[] args) {
new TestConn().testC();
}
}
例子二: 一、创建MySQL存储过程示例
--选择数据库
mysql> use test;
Database changed
--创建示例用表
mysql> create table zzm(
-> id int primary key auto_increment,
-> name varchar(10)
-> );
Query OK, 0 rows affected (0.20 sec)
mysql> insert into zzm(name) values('zhang');
Query OK, 1 row affected (0.08 sec)
mysql> insert into zzm(name) values('zeng');
Query OK, 1 row affected (0.05 sec)
mysql> insert into zzm(name) values('ming');
Query OK, 1 row affected (0.05 sec)
mysql> select * from zzm;
+----+-------+
| id | name |
+----+-------+
| 1 | zhang |
| 2 | zeng |
| 3 | ming |
+----+-------+
3 rows in set (0.00 sec)
--更改命令结束符(因为在procedure中经常要用到默认的命令结束符--分号(;)
--所以在创建procedure的时候需要定义新的结束符以说明创建procedure的命令结束)
--这里将结束符号改成美元符号--$
mysql> delimiter $
--创建存储过程p3
--此存储过程的过程名是p3,该过程包含两个参数,
--一个是输入类型的(以IN标示),参数名是nameid,类型是int,
--一个是输出类型的(以OUT标示),参数名是person_name,类型是varchar(10)
--此存储过程的作用是查询出zzm表的全部内容,会输出结果集(data set),然后
--再查询表中记录的ID是nameid的字段name,将其输出到第二个输出类型的参数里面,这个查询
--不会输出结果集。
mysql> create procedure p3(IN nameid int, OUT person_name
varchar(10))
-> begin
-> select * from test.zzm;
-> select zzm.name into person_name from test.zzm where
zzm.id = nameid;
-> end
-> $
Query OK, 0 rows affected (0.00 sec)
--创建完成,查看数据库中所有已经创建的存储过程
mysql> show procedure status $
--调用存储过程
mysql> call p3(3,@name) $
+----+-------+
| id | name |
+----+-------+
| 1 | zhang |
| 2 | zeng |
| 3 | ming |
+----+-------+
3 rows in set (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
mysql> select @name $
+-------+
| @name |
+-------+
| ming |
+-------+
1 row in set (0.00 sec)
二、在Java程序中调用存储过程的程序示例
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import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Types;
public class Main {
public static void main(String[] args) {
/* JDBC连接MySQL数据库的参数 */
String driverName = "com.mysql.jdbc.Driver";
String userName = "root";
String userPasswd = "nicegiving";
String dbName = "test";
String url = "jdbc:mysql://localhost/" + dbName +
"?user=" + userName
+ "&password=" + userPasswd;
Connection connection = null;
CallableStatement stmt = null;
try {
// 加载数据库驱动程序
Class.forName(driverName).newInstance();
// 连接数据库
connection = DriverManager.getConnection(url);
// 调用存储过程,此存储过程有2个参数
stmt = connection.prepareCall("{call p3(?,?)}");
// 第一个参数是输入的,在此设置第一个参数的值:将第一个参数设置成整数值3
stmt.setInt(1, 3);
// 第二个参数是输出的,在此设置第二个参数的输出类型为VARCHAR
stmt.registerOutParameter(2, Types.VARCHAR);
// 执行存储过程
boolean hadResults = stmt.execute();
// 如果有查询语句的话,此执行过程会返回结果集,在此处理结果集里面的东西
System.out.println("Data from table:");
while (hadResults) {
ResultSet rs = stmt.getResultSet();
while(rs.next()){
String id = rs.getString(1);
String name = rs.getString(2);
System.out.println("ID = "+id+"tName = " + name);
}
hadResults = stmt.getMoreResults();
}
// 获取存储过程的返回值
System.out.println("nData from procedure:");
String name = stmt.getString(2); // 获得第二个参数,因为第二个参数是输出类型的
System.out.println("Name = " + name);
} catch (Exception e) {
System.out.println(e.toString());
} finally {
try {
stmt.close();
connection.close();
} catch (Exception ex) {
System.out.println(ex.getMessage());
}
}
}
}
--程序执行结果--
Data from table:
ID = 1 Name = zhang
ID = 2 Name = zeng
ID = 3 Name = ming
Data from procedure:
Name = ming 例子三:
一、建表
DROP TABLE IF EXISTS `user`;
CREATE TABLE `user` (
`ID` int(11) NOT NULL auto_increment,
`NAME` varchar(16) NOT NULL default '',
`REMARK` varchar(16) NOT NULL default '',
PRIMARY KEY (`ID`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
二、建立存储过程
1、获取用户信息
delimiter $
CREATE DEFINER=`root`@`localhost` PROCEDURE
`getUserList`()
BEGIN
select * from user;
END$
2、通过传入参数创建用户
CREATE DEFINER=`root`@`localhost` PROCEDURE
`insertUser`(nameVar varchar(16),remarkVar varchar(16))
BEGIN
insert into user(name,remark) values(nameVar,remarkVar);
END$
3.根据用户id获取用户信息
create procedure getUserById(in idInt int,out nameVar
varchar(16),out remarkVar varchar(16))
begin
select name,remark into nameVar,remarkVar from user where
user.id=idInt;
end $
三、调用
代码:
package com.database;
import java.sql.*;
public class MysqlProcedure2 {
public Connection getConnection()
{
Connection conn=null;
try{
String driverName="com.mysql.jdbc.Driver";
String userName="root";
String password="123";
String dbName="test";
String
url="jdbc:mysql://localhost:3306/"+dbName+"?user="
+userName+"&password="+password;
Class.forName(driverName).newInstance();
conn=DriverManager.getConnection(url);
}catch(Exception e){e.printStackTrace();}
return conn;
}
public void testGetUserList()
{
try{
Connection conn=this.getConnection();
CallableStatement stmt=conn.prepareCall("{call
getUserList()}");
ResultSet rs=stmt.executeQuery();
int i=1;
while(rs.next())
{
int id=rs.getInt(1);
String name=rs.getString(2);
String remark=rs.getString(3);
System.out.println("record "+i);
i++;
System.out.println("Id="+id+"t"+"name="+name+"t"
+"remark="+remark);
}
}catch(Exception e){e.printStackTrace();}
}
public void testInsertUser(String name,String remark)
{
try{
Connection conn=this.getConnection();
CallableStatement stmt=conn.prepareCall("{call
insertUser(?,?)}");
stmt.setString(1, name);
stmt.setString(2, remark);
boolean b=stmt.execute();
}catch(Exception e){e.printStackTrace();}
}
public void testGetUserById(int id)
{
try{
Connection conn=this.getConnection();
CallableStatement stmt=conn.prepareCall("{call
getUserById(?,?,?)}");
stmt.setInt(1, id);
stmt.registerOutParameter(2, Types.VARCHAR);
stmt.registerOutParameter(3, Types.VARCHAR);
boolean b=stmt.execute();
String name=stmt.getString(2);
String remark=stmt.getString(3);
System.out.println("name="+name+"t"+"remark="+rem ark);
}catch(Exception e){e.printStackTrace();}
}
public static void main(String[]args)
{
MysqlProcedure2 mp=new MysqlProcedure2();
mp.testGetUserList();
mp.testInsertUser("wsh", "student");
mp.testGetUserById(1);
}
}
希望以上的几个例子能给大家帮助!!!!!!!!!!!
2014-07-13 16:35:49