Tutorial for building J2EE Applications using JBOSS and ECLIPSE Chapter 3

在閱讀這一章的時候，基本沒有什麼障礙，但是有一個地方文章是寫錯了。

在Create DAO Interface  那一節中“Go to src > add package named au.com.tusc.dao > Add a class StoreAcessDAOImpl in that package”紅色字型錯了，應該是StoreAccessDAOImpl。

還有就是因為使用不同版本的jboss和lomboz，所以文章中說到的ejbGenerate.xml 檔案對應的是xdoclet.xml檔案。

Stateless Session Bean

根據Mastering EJB 2nd的描述，建立一個EJB Component所需要的幾個步驟

1. Write the .java files that compose your bean: the component interfaces,
home interfaces, enterprise bean class file, and any helper classes you
might need.這一步因為有lomboz的幫忙，我只需要寫enterprise bean class檔案，在這一章的例子當中就是StoreAccessBean就是enterprise bean檔案。然後在這個檔案的開始地方加幾個tag，如@ejb.dao，lomboz就會自動產生StoreAccessDAO檔案。

2. Write the deployment descriptor. Lomboz會自動建立相關的部署檔案

3. Compile the .java files from step 1 into .class files.Writing Your First Bean

4. Using the jar utility, create an Ejb-jar file containing the deploymentdescriptor and .class files.

5. Deploy the Ejb-jar file into your container in a vendor-specific manner,perhaps by running a vendor-specific tool or perhaps by copying yourEjb-jar file into a folder where your container looks to load Ejb-jar files.

6. Configure your EJB server so that it is properly configured to host yourEjb-jar file. You might tune things such as database connections, thread pools, and so on. This step is vendor-specific and might be done through a
Web-based console or by editing a configuration file.

7. Start your EJB container and confirm that it has loaded your Ejb-jar file.

8. Optionally, write a standalone test client .java file. Compile that test client into a .class file. Run the test client from the command line and have it exercise your bean’s APIs.

3～8步lomboz會自動幫我完成。看來有了Lomboz真的可以把精力集中在商務邏輯的開發。

不過在實現這個例子的時候，一個部署ejb的典型錯誤又發生了，就是tag語句寫錯了，這些東西都是只有在部署後才可以知道，不可以編譯來校正，而且出了錯也不容易找，真是麻煩。唯一的辦法就是開啟lomboz的文檔，然後複製粘貼，希望這樣會少一點錯誤。或者等我找到更加先進的工具進行校正，暫時就只好這樣子了。