Exception Handling with Spring and Log4J
How to log exceptions. This technique will log messages to your server log file, send an email, with the tag stack of the error, for error level warnings and display a generic page to the user.
First step is to set up Log4j.
Make sure you have the following classes in application lib or common server lib.
activation.jar
This can be got from http://java.sun.com/products/javabeans/jaf/downloads/index.html
Set up your log4J configuration file, put this file in your WEB-INF directory
The goal of this site is to provide examples and articles that simplify the learning process of various information technologies. -- Very good beginning resource
SFTP-Client mit Java implementieren
August 28th, 2007 in Code-Schnipsel | 2 Kommentare »
Wer innerhalb eines Projektes vor die Aufgabe gestellt wird, eine FTP-Verbindung über den SSH-Port (SFTP) aufzubauen steht schnell vor dem Problem, dass Java von Haus aus hierfür keine geeignete Library zur Verfügung stellt. Da ich selbst beim Suchen nach der geeigneten Lösung einen gewissen Moment in Google, auf diversen Seiten und Foren und im Quellcode von diversen Libs verbrachte, möchte ich hier die von mir präferierte Lösung vorstellen.
This is again a small JMS configuration stuff we have to do in JBoss 5. There is considerable difference in doing it in JBoss 5 compared to JBoss 4 and don’t expect our old configuration to work well with JBoss 5 without any change. In JBoss 5 they are using JBoss Messaging in place of JBoss MQ. You can read a detailed post on migrating from JBoss 4 to JBoss 5 here.
If you are having a problem with some code and seeking help, preparing a Short, Self Contained, Correct Example (SSCCE) is very useful. But what is an SSCCE?
In this article, after a quick introduction to Wicket, you will learn to obtain and set up the requisite software for Wicket-based web development. Then you will learn to develop interactive web pages using Wicket. Along the way, you will be introduced to some key Wicket concepts.
With the addition of generics in Java 5, writing a custom DAO for each domain object is no longer required. There are a wide variety of articles on creating generic DAOs, but my current project uses the approach from this IBM DeveloperWorks article. This approach was choses mainly because of the clearly written article and the integration with Spring. You should be able to extend any generic DAO based on Spring to implement the stored procedure configuration.
Sie wollen die Programmiersprache Java lernen? Dann sind Sie hier genau richtig! Im Java Blog Buch werden nach und nach mehr oder weniger aufeinander aufbauende Lektionen veröffentlicht, so dass am Ende eine Art Buch zur Java Programmierung entsteht. Navigieren Sie sich einfach durch das Kapitelverzeichnis auf der linken Seite oder durchstöbern Sie das Inhaltsverzeichnis!
Gerne dürfen Sie auch interessante Themen vorschlagen, über welche wir dann ggf. bloggen werden.
Aber jetzt wünsche ich Ihnen viel Spaß beim Java lernen!
Ps.: Sollten Sie sich dazu berufen fühlen, einen Beitrag zu diesem Werk zu leisten oder gleich als Autor einzusteigen, so nehmen Sie doch einfach Kontakt zu uns auf.
JSF-Spring-JPA is the popular stack of choice these days, mostly to be used in my consulting and training purposes I’ve created a base project called MovieStore demonstrating the annotation-driven integration of JSF-Spring-JPA. JSF backing beans, spring service level beans and DAO’s are configured and integrated with annotations. Only the core infrastructure like datasource, entityManagerFactory or transactionManager are configured with xml.
The traditional way to integrate JSF and Spring was to define JSF beans in faces-config as managed beans and refer to the spring beans using the managed-property configuration. With the help of the spring’s delegatingvariableresolver the managed property is resolved from spring application context and JSF’s IOC injects the bean to the JSF Managed bean instance. I’ve written an article it about this way before.First approach is modelled as follows
When using JUnit in Spring there are several features added that many developers are not aware of.
First, if you are including the Spring Context in your tests, it becomes an Integration Test, no longer a Unit Test.
We have used Spring Roo in a web project and show how we generated an early prototype and transistioned to early development and then to production code.