chandan kumar mitwaa

Hello Vivek

I am using eclipse. I created a new project using New Spring Project wizard. I had downloaded Spring framework 3 from the official spring site. Now I extracted it somewhere on my computer. Then I add the jar files in the folder "dist" to my project classpath.

The structure as it appears in my Project Explorer is like this:

SequenceGenerator

:Spring Elements
:Beans
>bean.xml
:src
:mit
>Main.java
>SequenceGenerator.java
@JRE System Library

#org.springframework.aop-3.0.0.RELEASE.jar
#org.springframework.asm-3.0.0.RELEASE.jar
#org.springframework.aspects-3.0.0.RELEASE.jar
#org.springframework.beans-3.0.0.RELEASE.jar
#org.springframework.context-3.0.0.RELEASE.jar
#org.springframework.context.support-3.0.0.RELEASE.jar
#org.springframework.core-3.0.0.RELEASE.jar
#org.springframework.expression-3.0.0.RELEASE.jar
#org.springframework.instrument-3.0.0.RELEASE.jar
#org.springframework.instrument.tomcat-3.0.0.RELEASE.jar
#org.springframework.jdbc-3.0.0.RELEASE.jar
#org.springframework.jms-3.0.0.RELEASE.jar
#org.springframework.orm-3.0.0.RELEASE.jar
#org.springframework.oxm-3.0.0.RELEASE.jar
#org.springframework.spring-library-3.0.0.RELEASE.libd
#org.springframework.test-3.0.0.RELEASE.jar
#org.springframework.transaction-3.0.0.RELEASE.jar
#org.springframework.web-3.0.0.RELEASE.jar
#org.springframework.web.portlet-3.0.0.RELEASE.jar
#org.springframework.web.servlet-3.0.0.RELEASE.jar
#org.springframework.web.struts-3.0.0.RELEASE.jar


Please help me on this, what am I missing?

Hi everyone,

I am new to Spring. This is my first Spring Application but I was unable to successfully run it. I have tried a lot but I am not getting the reason why it is not running.

Application name: SequenceGenerator


bean.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="sequenceGenerator" class="mit.SequenceGenerator"> <property name="prefix" value="30" /> <property name="suffix" value="A" /> <property name="initial" value="10000" /> </bean> </beans>

SequenceGenerator.java
package mit; public class SequenceGenerator { private String prefix; private String suffix; private int initial; private int counter; public String getPrefix() { return prefix; } public void setPrefix(String prefix) { this.prefix = prefix; } public String getSuffix() { return suffix; } public void setSuffix(String suffix) { this.suffix = suffix; } public int getInitial() { return initial; } public void setInitial(int initial) { this.initial = initial; } public int getCounter() { return counter; } public void setCounter(int counter) { this.counter = counter; } public synchronized String getSequence() { StringBuffer buffer = new StringBuffer(); buffer.append(prefix); buffer.append(initial + counter++); buffer.append(suffix); return buffer.toString(); } }

Main.java
package mit; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class Main { /** * @param args */ public static void main(String[] args) { ApplicationContext context = new ClassPathXmlApplicationContext("bean.xml"); SequenceGenerator generator = (SequenceGenerator) context.getBean("sequenceGenerator"); System.out.println(generator.getSequence()); System.out.println(generator.getSequence()); } }



When I press the run button in eclipse the Output is :

Feb 15, 2010 11:45:05 AM org.springframework.context.support.AbstractApplicationContext prepareRefresh INFO: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@b6ece5: startup date [Mon Feb 15 11:45:05 IST 2010]; root of context hierarchy Exception in thread "main" java.lang.ExceptionInInitializerError at org.springframework.context.support.AbstractRefreshableApplicationContext.createBeanFactory(AbstractRefreshableApplicationContext.java:194) at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:127) at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:458) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:388) at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139) at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83) at mit.Main.main(Main.java:14) Caused by: java.lang.NullPointerException at org.springframework.beans.factory.support.DefaultListableBeanFactory.<clinit>(DefaultListableBeanFactory.java:103) ... 7 more


Please help me on this.

I had to pay 2 questions for my negligence. From the very start I neglected "Java Patterns" and thought I would study that at last. But I made two questions wrong in the exam. This is really hurting me. I was hoping for above 95%. Learnt a lesson.

But I am happy, and sharing this with you is so healing. I look for some words from you rancher friends.

Thank you very much.

Hi friends,

I passed SCWCD with 92%, yesterday. Thank you all.

I would say, I love this forum very much.

Hi saurabh soni,

Welcome to JavaRanch!!

You should start a new topic for your query. Please note that your post is not relevant or related to this topic. Also any code must be enclosed between [ code][\ code] so that it will be automatically formatted for better readability.

Also refer to: How To Ask Questions On Java Ranch

I read EJB 3.0 only a little, from O' Reilly's Enterprise JavaBeans 3.0, 1.5 years back and I found it quite interesting. I am not sure of Spring. I browse through companies and most of them require Spring. I have seen only a few asking for EJB. Is it that Spring is widely used?

Hello Vivek,

Can I manage learning both hand to hand, at same time?? Or I should complete one and go for the other?? How long is it going to take, if I learn them separately?

However I want to add both to my basket, may be in some near future. For the time being I want to have an experience level which helps me deliver considerable output to my company. Please reply in these contexts.

Hi everyone,

I want to learn one out of Spring and EJB. I have a little idea about EJB 3.0. I am about to complete my graduation and take a job.
Please suggest me which one should I choose and why?

Maciek Mike wrote:Hi,

...In one of my mock questions I found this as the correct answer. Could someone please provide any example of vendor-specifiv authentication scheme?
Thanks in advance.

Please specify the source of the mock question. As such <auth-method> can take only one of the four values in DD.

Hello Ankit,

[E-Mail ID DELETED] is the email through which I bought a SCJP voucher priced at Rs 4000 last August.

This is the mail I would like to share here as receieved from the concerned Institution on 2/06/2009:
[E-Mail DELETED]


This time,[ie on 16/1/2010] I contacted them for SCWCD voucher on [email id removed] for SCWCD voucher and they replied through [E-Mail ID DELETED].

[E-Mail DELETED]


The other email [E-Mail ID DELETED]: I got a reply from this when i mailed an enquiry about sun vouchers to Edu_Enquiry_IN@sun.com, which in turn I got from http://in.sun.com/aboutsun/contact/training.jsp.

Below given are two email addresses:

[email Ids removed]

You can send a request for information on vouchers to the same. They are charging Rs 5500/- for a voucher with validity upto December 31, 2010. While NIITs, may cost not less than Rs 6000/-.

Happy Birthday

The answer on page 420 states that it will FAIL at request.
If the Bean exists on the request scope with value "Evan" why does it fail?
I am missing something but I don't know where.

I have tried above code but it does not fail. I think you too should try once.

<taglib xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee/web-jsptaglibrary_2_0.xsd" version="1.0">

Use version="2.0" instead.

Hope that it works.

Hello Tomasz

When you think of it - a URL needs to be rewritten only when it is pointing back to the same application, right? There's no point in passing a session ID to any other application (in fact - it might be insecure).

I have added this line as the last line in my code:

out.println("<br>Encoded 14: "+ response.encodeURL("/SessionUsingURLRewriting/../nondir/nonexistent.jsp"));


And both the containers are giving me the output:

Encoded 14: /SessionUsingURLRewriting/../nondir/nonexistent.jsp;jsessionid=ebab003123420dc7494140ed08c7

I don't think that the url is still pointing to the same application.
What do you say???