Hi,
I have a problem with the example in ch2, using java-base configuration. Most of the code doing well. However, in the main class, there is a annotationConfigApplicationContext class which is not define before. What should I do with it?

Thanks.

Hello, I have the same problem with all Configuration-Examples:

- java-based-configuration
- xml-based-configuration
- annotation-based-confiuration

I compiled the project by typing "mvn compile". After typing "java com.wiley.beginningspring.ch2.Main" i get the following error-message:

Exception in thread "main" java.lang.NoClassDefFoundError: org/springframework/context/support/ClassPathXmlApplicationContext
at com.wiley.beginningspring.ch2.Main.main(Main.java: 8)
Caused by: java.lang.ClassNotFoundException: org.springframework.context.support.ClassPathXmlAp plicationContext
at java.net.URLClassLoader.findClass(URLClassLoader.j ava:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:4 24)
at sun.misc.Launcher$AppClassLoader.loadClass(Launche r.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:3 57)
... 1 more

Can anyone help?

I think you are trying to run the Main from command line and in that case you probably didn't specified required Spring dependencies via java -classpath or -cp options. As there are usually several dependencies required in the classpath, you have to list all the dependencies while running the Main. Trying to run sample codes via command line might be a bit tedious task in the end. I would suggest you to use an IDE like Eclipse with maven installed of course in order to easly run the code samples. I just downloaded sample code zip file, extracted it, imported it into Eclipse and was able to run without any problem.

If you are still determined to run via command line, you can run maven dependency:copy-dependencies goal first, in order to download and copy those required dependencies into target/dependencies folder. Second, you need to list all those dependencies in you java -classpath or -cp line. I tried this as well, and sample code worked again, but I noticed another problem releated with maven compile goal not-copying non-java resources located in src/main/java source folders. You will also need to create a src/main/resources folder and copy resources files e.g xml bean configuration files into that source folder while preserving their corresponding package structure in that source folder as well.

Do you mean following example? If yes, AnnotationConfigApplicationContext class is already imported, and is used to create a Spring ApplicationContext instance. I couldn't figure out what is the exact problem you faced here. Could you provide a little bit more information about it?

package com.wiley.beginningspring.ch2;

import org.springframework.context.annotation.AnnotationC onfigApplicationContext;

public class Main {

public static void main(String[] args) {
AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext(Ch2BeanConfigur ation.class);
AccountService accountService = applicationContext.getBean("accountService", AccountService.class);

System.out.println("Before money transfer");
System.out.println("Account 1 balance :" + accountService.getAccount(1).getBalance());
System.out.println("Account 2 balance :" + accountService.getAccount(2).getBalance());

accountService.transferMoney(1, 2, 5.0);

System.out.println("After money transfer");
System.out.println("Account 1 balance :" + accountService.getAccount(1).getBalance());
System.out.println("Account 2 balance :" + accountService.getAccount(2).getBalance());
}

}