spring中使用内存数据库(Embedded database)
内存数据库(Embedded database或in-momery database)具有配置简单、启动速度快、尤其是其可测试性等优点,使其成为开发过程中非常有用的轻量级数据库。在spring中支持HSQL、H2和Derby三种数据库。
下面看一下具体使用方法:
1.需要在applicationContext.xml中添加如下:
<jdbc:embedded-database id="dataSource"> <jdbc:script location="classpath:schema.sql"/> <jdbc:script location="classpath:test-data.sql"/> </jdbc:embedded-database>
<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jdbc="http://www.springframework.org/schema/jdbc" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd"> <!-- derby创建用户名和密码参考:http://www.joyzhong.com/archives/643 --> <!-- 使用内存数据库时,该段配置不再需要 <bean id="dataSource" type="DERBY"> <jdbc:script location="classpath:schema.sql"/> <jdbc:script location="classpath:test-data.sql"/> </jdbc:embedded-database> <bean id="sessionFactory" name="code">create table sec_user( username varchar(100) primary key, password varchar(255)); create table sec_role( rolename varchar(100) primary key, prompt varchar(255));create table sec_role_user( username varchar(100) not null, rolename varchar(100) not null, constraint ru_id primary key(username,rolename));alter table sec_role_user add constraint fk_user foreign key(username) references sec_user(username);alter table sec_role_user add constraint fk_role foreign key(rolename) references sec_role(rolename);
insert into sec_user values('admin','admin'); insert into sec_user values('test','test');insert into sec_role values('ROLE_USER','common user privilege');insert into sec_role values('ROLE_ADMIN','administrator privilege');insert into sec_role_user values('test','ROLE_USER');insert into sec_role_user values('admin','ROLE_USER');insert into sec_role_user values('admin','ROLE_ADMIN');