I have to pass a parameter to from client to server through spring RMI please advise how to achieve this below is the class i have editied
package com.javatpoint;
import org.aopalliance.intercept.MethodInvocation;
import org.springframework.remoting.support.RemoteInvocation;
#SuppressWarnings("serial")
public class CalculationImpl extends RemoteInvocation implements Calculation {
public int cube(int number) {
return number*number*number;
}
public CalculationImpl (MethodInvocation methodInvocation) {
super();
// Invoked in superclass
this.addAttribute("awer", "test1111");
}
private void addAttribute(String string, String string2) {
}
}
and the xml for the client is
<beans>
<bean id="calculationBean" class="org.springframework.remoting.rmi.RmiProxyFactoryBean">
<property name="remoteInvocationFactory" ref="invocationFactory"/>
<property name="serviceUrl" value="rmi://localhost:1099/CalculationService"></property>
<property name="serviceInterface" value="com.javatpoint.Calculation"></property>
</bean>
<bean id="invocationFactory" class="com.javatpoint.CalculationImpl"/>
</beans>
now please advise how to customise the rmiservice exporter so that it should recieve the value sent fromt he client lets say as shown above in client xml the value of parameter awer is test1111 now i want to customise my rmiservice exporter
so that it should recieve this value and display it
below is my rmi service exporter..
<bean id="calculationBean" class="com.javatpoint.CalculationImpl"></bean>
<bean class="org.springframework.remoting.rmi.RmiServiceExporter">
<property name="service" ref="calculationBean"></property>
<property name="serviceInterface" value="com.javatpoint.Calculation"></property>
<property name="serviceName" value="CalculationService"></property>
<property name="registryPort" value="1099"></property>
</bean>
In your calculation interface there should be a method that takes a String as a parameter.
public interface Calculation {
void print(String text );
void registerIpAddress(String ip);
}
public class CalculationImpl implements Calculation {
#Override
void print(String text) {
System.out.println(text);
}
#Override
void registerIpAddress(String ip){
List.add(ip);//or whatever you want
}
your xml files for both client and host are right, but you are missing a few things.
ApplicationContext.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">
<bean id="calculationBean" class="com.javatpoint.CalculationImpl"></bean>
<bean class="org.springframework.remoting.rmi.RmiServiceExporter">
<property name="service" ref="calculationBean"></property>
<property name="serviceInterface" value="com.javatpoint.Calculation"></property>
<property name="serviceName" value="CalculationService"></property>
<property name="replaceExistingBinding" value="true"></property>
<property name="registryPort" value="1099"></property>
</bean>
</beans>
client-beans.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">
<bean id="calculationBean" class="org.springframework.remoting.rmi.RmiProxyFactoryBean">
<property name="serviceUrl" value="rmi://localhost:1099/CalculationService"></property>
<property name="serviceInterface" value="com.javatpoint.Calculation"></property>
</bean>
</beans>
you need to create a new instance of applicaionContext in order for this to work
class server {
public static void main(String[] args) {
ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
}
}
finally you need to run your client
public static void main(String[] args) {
ApplicationContext context = new ClassPathXmlApplicationContext("client-beans.xml");
Calculation calculation = (Calculation) context.getBean("calculationBean");
calculation.print("Copied&Pasted!");
try {
calculation.registerIpAddress(InetAddress.getLocalHost().getHostAddress());
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
Related
I am trying to pass string messages from one class to another (from Class1 to Class2) within the same application so I am trying to solve it using Spring Integration.
My context.xml file looks like below:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.1.xsd
http://www.springframework.org/schema/integration http://www.springframework.org/schema/integration/spring-integration.xsd
http://www.springframework.org/schema/integration/jms http://www.springframework.org/schema/integration/jms/spring-integration-jms.xsd"
xmlns:int="http://www.springframework.org/schema/integration"
xmlns:int-jms="http://www.springframework.org/schema/integration/jms">
<int:channel id="processEmpChannel">
<int:queue/>
</int:channel>
<int-jms:inbound-channel-adapter
channel="processEmpChannel" connection-factory="connectionFactory"
destination-name="empQueue">
<int:poller fixed-delay="500" />
</int-jms:inbound-channel-adapter>
<bean id="connectionFactory"
class="org.springframework.jms.connection.CachingConnectionFactory">
<property name="targetConnectionFactory">
<bean class="org.apache.activemq.ActiveMQConnectionFactory">
<property name="brokerURL" value="vm://localhost?broker.persistent=false" />
</bean>
</property>
<property name="sessionCacheSize" value="10" />
<property name="cacheProducers" value="false" />
</bean>
<bean id="jmsTemplate" class="org.springframework.jms.core.JmsTemplate">
<property name="connectionFactory" ref="connectionFactory" />
</bean>
<bean id="springIntExample"
class="com.distributed.analyzer.Manager">
<property name="jmsTemplate" ref="jmsTemplate" />
</bean>
<int:service-activator input-channel="processEmpChannel" ref="springIntExample" method="processMessage">
<int:poller fixed-delay="500"/>
</int:service-activator>
</beans>
Class Class1:
package com.my.package;
public class Class1 implements Runnable {
#Autowired
private ApplicationContext appContext;
private JmsTemplate jmsTemplate;
...
public void someMethod() {
Class1 c = (Class1) appContext.getBean("springIntExample");
c.send();
}
public void send() {
getJmsTemplate().convertAndSend("empQueue", "one message to test");
}
public JmsTemplate getJmsTemplate() {
return jmsTemplate;
}
public void setJmsTemplate(JmsTemplate jmsTemplate) {
this.jmsTemplate = jmsTemplate;
}
...
}
Class Class2:
package com.my.package;
public class Class2 implements Runnable {
...
public void processMessage(String msg) {
System.out.println("message recived: " + msg);
}
...
}
Problem I have:
If I open my context.xml file, the below lines in context.xml are marked with a cross (error):
<int:poller fixed-delay="500" />
Anyway I can build and execute application but in run time an exception message saying fixe-delay not allowed in int:poller appears.
Also, is my implementation correct? I am not sure if after solving the problem commented it will work. I am new in spring sorry.
I have the below program of Spring RMI in which the client send its port no which i s received at the Server end and is being displayed , I am using spring rmi to achieve that now i want is there any way since i want to remove the hard coding that is client would notsent it hostname now simply client would call the servre RMI server and RMI server should be smart enough to judge that the client host name , please advise f in the below program i stop passing the hostname from client side then how would be the server would be smart enough to judge the client hostname itself
calculation interface there should be a method that takes a String as a parameter.
public interface Calculation {
void print(String text );
void registerIpAddress(String ip);
}
public class CalculationImpl implements Calculation {
#Override
void print(String text) {
System.out.println(text);
}
#Override
void registerIpAddress(String ip){
List.add(ip);//or whatever you want
}
your xml files for both client and host are right ApplicationContext.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">
<bean id="calculationBean" class="com.javatpoint.CalculationImpl"></bean>
<bean class="org.springframework.remoting.rmi.RmiServiceExporter">
<property name="service" ref="calculationBean"></property>
<property name="serviceInterface" value="com.javatpoint.Calculation"></property>
<property name="serviceName" value="CalculationService"></property>
<property name="replaceExistingBinding" value="true"></property>
<property name="registryPort" value="1099"></property>
</bean>
</beans>
client-beans.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">
<bean id="calculationBean" class="org.springframework.remoting.rmi.RmiProxyFactoryBean">
<property name="serviceUrl" value="rmi://localhost:1099/CalculationService"></property>
<property name="serviceInterface" value="com.javatpoint.Calculation"></property>
</bean>
</beans>
create a new instance of applicaionContext in order for this to work
class server {
public static void main(String[] args) {
ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
}
}
need to run your client
public static void main(String[] args) {
ApplicationContext context = new ClassPathXmlApplicationContext("client-beans.xml");
Calculation calculation = (Calculation) context.getBean("calculationBean");
calculation.print("Copied&Pasted!");
try {
calculation.registerIpAddress(InetAddress.getLocalHost().getHostAddress());
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
upon googling i can see the method
public static String getClientHost()
throws ServerNotActiveException
now for this i need to extend remote server class can't i achieve same thing in spring rmi itself
I have a simple standalone application with spring (Main class + bean class). It creates MBean (JMX).
It just start up my bean.
main class:
public class Main {
public static void main(final String[] args) {
ApplicationContext ac = new ClassPathXmlApplicationContext("cont.xml");
try {
Thread.sleep(1000 * 60 * 5);
} catch (final Throwable t) {}
}
}
Bean
public class Test {
private String val = "";
public String getVal() {
return val;
}
public void setVal(String v) {
val = v;
}
cont.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd"
default-lazy-init="true">
<bean id="test" class="test.Test" />
<bean class="org.springframework.jmx.support.MBeanServerFactoryBean">
<property name="locateExistingServerIfPossible" value="true" />
</bean>
<bean class="org.springframework.jmx.export.MBeanExporter" lazy-init="false">
<property name="assembler">
<bean class="org.springframework.jmx.export.assembler.MethodNameBasedMBeanInfoAssembler" >
<property name="managedMethods">
<list>
<value>getVal</value>
<value>setVal</value>
</list>
</property>
</bean>
</property>
<property name="beans">
<map>
<entry key="bean:name=Test" value-ref="test"/>
</map>
</property>
</bean>
</beans>
How can I run the same example on tomcat?
Thanks!
Use
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:cont.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
in your web.xml. This will instantiate all beans configured in cont.xml.
I am using Spring 3.1 as standalone app.
I have some wierd situation and I guess I am missing something.
I have class which has method that I have exposed via JMX console.
that method is invoking a method via bean.
that bean I am initializing in advaned.
the wierd thing that after i am invoking the method via the jmx console the bean instance turn to be null.
Thats the JMX bean which is exposed:
public class TriggerBean implements IJmxTriggerBean
{
static Logger logger = Logger.getLogger(TriggerBean.class);
FeedListenerBean fe = null;
public void start()
{
try
{
// init();
PropertyConfigurator.configure(FixGWConstants.LOG4J_PATH);
ApplicationContext context = new ClassPathXmlApplicationContext(FixGWConstants.APPLICATION_CONTEXT_XML);
fe = (FeedListenerBean) context.getBean("FeedListenerBean");
doTheListen();
}
catch (Throwable t)
{
logger.error(t);
System.out.println(t);
}
}
//thats the method being exposed by jmx. pay attention that fe object has been initialized before by the start()
public void doTheListen()
{
fe.listen();
}
private void init()
{
Resource resource = new ClassPathResource(System.getProperty("user.dir") + "//config.properties");
try
{
Properties props = PropertiesLoaderUtils.loadProperties(resource);
String log4jPath = props.getProperty("LOG4J_PATH");
}
catch (IOException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
I am testing it via standalone:
public static void main(String[] args) throws Exception
{
protected TriggerBean trigger = new Trigger();
trigger.start();
}
applicationContext.xml:
<?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:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-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/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">
<!-- Must for auto wiring
<context:annotation-config />
-->
<context:component-scan base-package="com.fixgw.beans">
</context:component-scan>
<!-- start a JMX Server -->
<bean id="mbeanServer" class="org.springframework.jmx.support.MBeanServerFactoryBean" />
<bean id="FeedListenerBean" class="com.fixgw.beans.FeedListenerBean">
</bean>
<bean id="TriggerBean" class="com.fixgw.test.TriggerBean">
</bean>
<bean id="exporter" class="org.springframework.jmx.export.MBeanExporter">
<property name="beans">
<map>
<entry key="Server:name=HttpAdaptor">
<bean class="mx4j.tools.adaptor.http.HttpAdaptor">
<property name="port" value="8000" />
<property name="host" value="0.0.0.0" />
<property name="processor">
<bean class="mx4j.tools.adaptor.http.XSLTProcessor" />
</property>
</bean>
</entry>
<entry key="bean:name=TriggerBean" value-ref="TriggerBean" />
</map>
</property>
<property name="listeners">
<list>
<!--
let the HttpAdapter be started after it is registered in the
MBeanServer
-->
<bean class="com.fixgw.jmx.HttpAdaptorMgr">
<property name="mbeanServer" ref="mbeanServer" />
</bean>
</list>
</property>
</bean>
</beans>
When I first using start() the object fe is doing great.
but after invoking doTheListen( via JMX the object fe remind null(although it has already been initialized before)
any idea?
thanks,
ray.
I am trying to configure JMX console for my standalone Spring application.
I have configured it this way:
Application context:
<?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:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-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/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">
<!-- Must for auto wiring
<context:annotation-config />
-->
<context:component-scan base-package="com.fixgw.beans">
</context:component-scan>
<bean id="FeedListenerBean" class="com.fixgw.beans.FeedListenerBean">
</bean>
<bean id="TriggerBean" class="com.fixgw.test.TriggerBean">
</bean>
<bean id="mbeanServer" class="org.springframework.jmx.support.MBeanServerFactoryBean" >
<property name="locateExistingServerIfPossible" value="true" />
</bean>
<bean id="exporter" class="org.springframework.jmx.export.MBeanExporter">
<property name="beans">
<map>
<entry key="bean:name=TriggerBean1" value-ref="TriggerBean" />
</map>
</property>
<property name="server" ref="mbeanServer" />
</bean>
</beans>
And a Trigger bean which I want it's public method to be exposed in the JMX:
public class TriggerBean implements IJmxTriggerBean
{
static Logger logger = Logger.getLogger(TriggerBean.class);
FeedListenerBean fe = null;
public void start()
{
try
{
// init();
PropertyConfigurator.configure(FixGWConstants.LOG4J_PATH);
ApplicationContext context = new ClassPathXmlApplicationContext(FixGWConstants.APPLICATION_CONTEXT_XML);
fe = (FeedListenerBean) context.getBean("FeedListenerBean");
Thread t=new Thread()
{
public void run()
{
while (true)
{
System.out.println("a");
try
{
Thread.sleep(1000);
}
catch (InterruptedException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
};
t.run();
doTheListen();
}
catch (Throwable t)
{
logger.error(t);
System.out.println(t);
}
}
public void doTheListen()
{
fe.listen();
}
}
package com.finbird.fixgw.test;
public interface IJmxTriggerBean
{
public void doTheListen();
}
Is that enough for configuration?
Now to which local address:port should I connect in order to access the console?
thanks,
ray
You have the JMX server, but you need an HTMLAdapter to view these beans via a browser. e.g. from this article:
<bean id="htmlAdaptor" class="com.sun.jdmk.comm.HtmlAdaptorServer" init-method="start" />
<bean id="exporter" class="org.springframework.jmx.export.MBeanExporter">
<property name="beans">
<map>
<entry key="adaptor:name=htmlAdaptor" value-ref="htmlAdaptor" />
<entry key="bean:name=calculatorConfigBean" value-ref="calculatorConfig" />
</map>
</property>
<property name="server" ref="mbeanServer" />
</bean>
Note that I'm assuming HTML/browser access here. See here for an Oracle tutorial with an adapter configured in code.