RMI isssue Security/Connection issue

[alireza kian]

Hey guy's im pretty new to j2ee .
i'm using RMI for communication between Model and VC layer in my application when i start web application i have following exceptios :

    java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at             sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.taroneesh.sharifebank.framework.App.invoke(App.java:33)
    at org.taroneesh.sharifebank.framework.SharifAction.service(SharifAction.java:44)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.taroneesh.sharifebank.framework.SharifFilter.doFilter(SharifFilter.java:34)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
    at java.lang.Thread.run(Thread.java:662)
    Caused by: java.rmi.UnmarshalException: Error unmarshaling return; nested exception is: 
    java.lang.ClassNotFoundException: org.springframework.jdbc.UncategorizedSQLException (no security manager: RMI class loader disabled)
    at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:227)
    at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:142)
    at java.rmi.server.RemoteObjectInvocationHandler.invokeRemoteMethod(RemoteObjectInvocationHandler.java:178)
    at java.rmi.server.RemoteObjectInvocationHandler.invoke(RemoteObjectInvocationHandler.java:132)
    at $Proxy0.checklogin(Unknown Source)
    at SharifeBank.Controller.ApiLoginCheckController.start(ApiLoginCheckController.java:23)
    ... 22 more
    
    Caused by: java.lang.ClassNotFoundException: org.springframework.jdbc.UncategorizedSQLException (no security manager: RMI class loader disabled)
    at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:375)
    at sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:165)
    at java.rmi.server.RMIClassLoader$2.loadClass(RMIClassLoader.java:620)
    at java.rmi.server.RMIClassLoader.loadClass(RMIClassLoader.java:247)
    at sun.rmi.server.MarshalInputStream.resolveClass(MarshalInputStream.java:197)
    .

for security issue add this code to my model distribution section :

 if (System.getSecurityManager() == null) {
            System.setSecurityManager(new RMISecurityManager());

        }

and by adding this section i have this exception in model application :

Exception in thread "main" org.springframework.beans.factory.BeanDefinitionStoreException: IOException parsing XML document from class path resource [configs/beans.xml]; nested exception is java.io.FileNotFoundException: class path resource [configs/beans.xml] cannot be opened because it does not exist
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:341)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:302)
at org.springframework.beans.factory.xml.XmlBeanFactory.<init>(XmlBeanFactory.java:78)
at org.springframework.beans.factory.xml.XmlBeanFactory.<init>(XmlBeanFactory.java:66)
at BL.User.<init>(User.java:22)
at Server.main(Server.java:22)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
Caused by: java.io.FileNotFoundException: class path resource [configs/beans.xml] cannot be opened because it does not exist
at org.springframework.core.io.ClassPathResource.getInputStream(ClassPathResource.java:157)
at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:328)
... 10 more

Any suggestions ?

[Pat Farrell]

alireza kian wrote:Hey guy's im pretty new to j2ee .
i'm using RMI for communication between Model and VC layer in my application when i start web application i have following exceptios :
Any suggestions ?

Yes, do not use RMI.
RMI was acceptable 15 years go, but no new systems should use it. Use a reliable message passing protocol, such as REST.

[kanna naha]

This is an useful program that I can be used in a required one are used.

[Mr. C Lamont Gilbert]

You probably need to have the security manager loaded by the JVM. Also need a security policy that grants permission. on jvm command line

-Djava.security.manager -Djava.security.policy=file:F:\client.policy

client policy file contains
grant {
permission java.security.AllPermission;
};

maybe something similar for the server.