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Category: Java

Java programming language

2018-11-29 | JavaEE |

Basic Authentication Omnifaces CombinedResourceHandler Internet Explorer Not Working

For a testing platform, we a have a typical basic authentication in front of our actual platform. The application server is a WildFly 14 with PrimeFaces as the frontend framework. In order for every JavaScript file not being downloaded separately, we also… more

2018-11-16 | Java |

Primefaces Line Chart – Browser Out Of Memory Crash

This blog post solves an error I encountered while trying to display some data in a PrimeFaces line chart graph (Version 6.2). Each time I opened the page with the graph, the Browser crashed with an “Out of Memory” message in the… more

2018-06-28 | Java |

Saxon HE External Entity Processing ( XXE )

In this article I will describe how to prevent Saxon from parsing external entities to avoid XXE attacks. Basically you should be very careful when parsing XML files from untrusted sources. Otherwise this can lead to serious security issues.

2017-08-10 | Java |

JSF ViewState Hack Attempt: java.lang.StringIndexOutOfBoundsException: String index out of range: -1 – com.sun.faces.renderkit.ServerSideStateHelper.getState (ServerSideStateHelper.java:313)

Hack Attempt on JSF ViewState This article explains why the error java.lang.StringIndexOutOfBoundsException: String index out of range: -1 in the class ServerSideStateHelper in the method getState (313) might be someone trying to hack your application server. It is getting quite technical in here… but… more

2016-08-01 | Java |

WildFly 10 with Apache and AJP

This article demonstrates how inbound request from a webserver (Apache) can be proxied to an application server (WildFly 10) using the Apache JServ Protocol (AJP). For more information on what AJP actually is, take a look at https://en.wikipedia.org/wiki/Apache_JServ_Protocol . WildFly 10 Configuration First you have to add… more

2015-04-01 | Java |

EJB Remoting with Wildfly

In Java Enterprise, the EJB (Enterprise Java Bean) technology is often used to create a service layer of a J2EE application running in an application Server (like Glassfish or Wildfly). While accessing these EJB instance is relatively easy from inside the same… more

2015-02-17 | Java |

Running Solr 4.10.3 with Maven, Eclipse 4.4 and Wildfly 8.1.0

The basic setup of Solr 4.10 with Eclipse 4.4 and Wildfly 8.1 requires quite a bit of configuration. First of all, be sure that your system fulfills the following requirements. Prerequisites Java Development Kit (jdk1.8.0_25) Eclipse Java EE IDE for Web Developers… more

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