Debugging Java EE Applications - The Java EE 6 Tutorial (original) (raw)
2. Using the Tutorial Examples
Java Platform, Standard Edition
Java EE 6 Software Development Kit
To Obtain the Tutorial Component Using the Update Tool
To Install NetBeans IDE without GlassFish Server
To Add GlassFish Server as a Server in NetBeans IDE
Starting and Stopping the GlassFish Server
To Start the GlassFish Server Using NetBeans IDE
Starting the Administration Console
To Start the Administration Console Using NetBeans IDE
Starting and Stopping the Java DB Server
To Start the Database Server Using NetBeans IDE
Tutorial Example Directory Structure
Getting the Latest Updates to the Tutorial
To Update the Tutorial through the Update Center
3. Getting Started with Web Applications
4. JavaServer Faces Technology
7. Using JavaServer Faces Technology in Web Pages
8. Using Converters, Listeners, and Validators
9. Developing with JavaServer Faces Technology
10. JavaServer Faces Technology: Advanced Concepts
11. Using Ajax with JavaServer Faces Technology
12. Composite Components: Advanced Topics and Example
13. Creating Custom UI Components and Other Custom Objects
14. Configuring JavaServer Faces Applications
16. Uploading Files with Java Servlet Technology
17. Internationalizing and Localizing Web Applications
18. Introduction to Web Services
19. Building Web Services with JAX-WS
20. Building RESTful Web Services with JAX-RS
21. JAX-RS: Advanced Topics and Example
23. Getting Started with Enterprise Beans
24. Running the Enterprise Bean Examples
25. A Message-Driven Bean Example
26. Using the Embedded Enterprise Bean Container
27. Using Asynchronous Method Invocation in Session Beans
Part V Contexts and Dependency Injection for the Java EE Platform
28. Introduction to Contexts and Dependency Injection for the Java EE Platform
29. Running the Basic Contexts and Dependency Injection Examples
30. Contexts and Dependency Injection for the Java EE Platform: Advanced Topics
31. Running the Advanced Contexts and Dependency Injection Examples
32. Introduction to the Java Persistence API
33. Running the Persistence Examples
34. The Java Persistence Query Language
35. Using the Criteria API to Create Queries
36. Creating and Using String-Based Criteria Queries
37. Controlling Concurrent Access to Entity Data with Locking
38. Using a Second-Level Cache with Java Persistence API Applications
39. Introduction to Security in the Java EE Platform
40. Getting Started Securing Web Applications
41. Getting Started Securing Enterprise Applications
42. Java EE Security: Advanced Topics
Part VIII Java EE Supporting Technologies
43. Introduction to Java EE Supporting Technologies
45. Resources and Resource Adapters
46. The Resource Adapter Example
47. Java Message Service Concepts
48. Java Message Service Examples
49. Bean Validation: Advanced Topics
50. Using Java EE Interceptors
51. Duke's Bookstore Case Study Example
52. Duke's Tutoring Case Study Example
53. Duke's Forest Case Study Example
This section explains how to determine what is causing an error in your application deployment or execution.
Using the Server Log
One way to debug applications is to look at the server log in domain-dir/logs/server.log. The log contains output from the GlassFish Server and your applications. You can log messages from any Java class in your application withSystem.out.println and the Java Logging APIs (documented at http://docs.oracle.com/javase/6/docs/technotes/guides/logging/index.html) and from web components with the ServletContext.log method.
If you use NetBeans IDE, logging output appears in the Output window as well as the server log.
If you start the GlassFish Server with the --verbose flag, all logging and debugging output will appear on the terminal window or command prompt and the server log. If you start the GlassFish Server in the background, debugging information is available only in the log. You can view the server log with a text editor or with the Administration Console log viewer.
To Use the Administration Console Log Viewer
- Select the GlassFish Server node.
- Click the View Log Files button.
The log viewer opens and displays the last 40 entries. - To display other entries, follow these steps.
- Click the Modify Search button.
- Specify any constraints on the entries you want to see.
- Click the Search button at the top of the log viewer.
Using a Debugger
The GlassFish Server supports the Java Platform Debugger Architecture (JPDA). With JPDA, you can configure the GlassFish Server to communicate debugging information using a socket.
To Debug an Application Using a Debugger
- Enable debugging in the GlassFish Server using the Administration Console:
- Expand the Configurations node, then expand the server-config node.
- Select the JVM Settings node. The default debug options are set to:
-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=9009
As you can see, the default debugger socket port is 9009. You can change it to a port not in use by the GlassFish Server or another service. - Select the Debug Enabled check box.
- Click the Save button.
- Stop the GlassFish Server and then restart it.
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