Tag Archives: Groovy

How to install Groovy on a Banana Pi or Raspberry Pi

The Raspberry or Banana Pi have already pre-installed Python. If you like to stay with Groovy on these nice little devices, here are the instructions to install Groovy. GVM makes the whole process very easy and convenient. Open a terminal … Continue reading

Rate this:

Posted in Development, Groovy | Tagged , , , , | 2 Comments

How to Solve: “Too many connections”; nested exception is com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException:

Hi, in one of my projects I used GPars and its withPool() method to execute some async tasks. The prime purpose of a task is to fetch some data from external sources and save the resulting data to a database. … Continue reading

Rate this:

Posted in Development | Tagged , , | 1 Comment

Create a WebCrawler with less than 100 Lines of Code

Hi, while you find excellent open source Web crawlers (e.g. crawler4j), I wanted to write a crawler with very little coding. Very often I use the famous Jsoup library. Jsoup has some nice features to find and extract data from … Continue reading

Rate this:

Posted in Development, Groovy | Tagged | 2 Comments

How to Use Envers4 with Hibernate4 and Grails 2.3.0

Grails A few days ago, the new¬†Grails 2.3.0¬†was released. One of the new features is the support of Hibernate 4. While it is still not the latest release, the now supported Hibernate 4.1 has already seen some improvements in its … Continue reading

Rate this:

Posted in Development, Grails | Tagged , , , | 2 Comments