Java的Spring框架下RMI与quartz的调用方法

Spring调用RMI

RMI(Remote Method Invocation) 远程方法调用，实现JAVA应用之间的远程通信。下面介绍使用Spring如何使用RMI。

包的结构如下：

定义调用接口

public interface UserDao { public String getUser(String username)throws Exception; }

接口实现类

public class UserDaoImplimplements UserDao { public String getUser(Stringusername)throws Exception { return"test:"+username; } }

（1）配置RMI服务：

applicationContext-rmi-server.xml <beanid="userDaoImpl"class="com.rmi.UserDaoImpl"/> <beanid="userDaoImpl_Exporter"class="org.springframework.remoting.rmi.RmiServiceExporter"> <propertyname="service"ref="userDaoImpl"/> <propertyname="serviceName"value="rmi/userDaoImpl"/> <propertyname="serviceInterface"value="com.rmi.UserDao"/> <propertyname="registryPort"value="8819"/> </bean>

（2）启动RMI服务：

public class RmiServer { publicstaticfinal ApplicationContextcontext =new ClassPathXmlApplicationContext("applicationContext-rmi-server.xml"); publicstaticvoid main(String[] args) { } }

（3）访问RMI服务

applicationContext-rmi-client.xml <beanid="userDaoImpl_client"class="org.springframework.remoting.rmi.RmiProxyFactoryBean"> <propertyname="serviceUrl"value="rmi://localhost:8819/rmi/userDaoImpl"/> <propertyname="serviceInterface"value="com.rmi.UserDao"/> <propertyname="refreshStubOnConnectFailure"value="true"/> <propertyname="lookupStubOnStartup"value="false"/> </bean> public class RmiClient { publicstaticvoid main(String[] args) { ApplicationContext context =new ClassPathXmlApplicationContext("applicationContext-rmi-client.xml"); UserDao userDao = (UserDao)context.getBean("userDaoImpl_client"); if(userDao !=null){ try { System.out.println(userDao.getUser("li")); } catch (Exception e) { e.printStackTrace(); } } } }

spring调用quartz

1.quartz是一个作业调度框架，spring集成的quartz，使用非常方便。

2.编写执行类

import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class QuartzTest { public static void main(String[] args) { System.out.println("Test start."); ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext-quartz.xml"); //如果配置文件中将startQuertz bean的lazy-init设置为false 则不用实例化 //context.getBean("startQuertz"); System.out.print("Test end.."); } }

3.编写配置文件

<> <bean id="quartzJob"/> <> <bean id="jobDetail"> <property name="targetObject" ref="quartzJob" /> <property name="targetMethod" value="work" /> </bean> <> <bean id="doTime"> <property name="jobDetail"> <ref bean="jobDetail"/> </property> <> <property name="cronExpression"> <value>2/5 44-46 22,23 9 9 ? 2012</value>  </property> </bean> <> <bean id="startQuertz" lazy-init="false" autowire="no"> <property name="triggers"> <list> <ref bean="doTime"/> </list> </property> </bean>

4.关于cronExpression表达式

<> <property name="cronExpression"> <value>2/5 44-46 22,23 9 9 ? 2012</value>