Using Grails, we often set some application wide constants or config properties or execute certain tasks in bootstrap.groovy when the application starts . A better approach is to create a new class in src/groovy and have it implement Initialization bean interface [java] import org.springframework.beans.factory.InitializingBean class MyClass implements InitializingBean { void afterPropertiesSet() { // do you stuff here. } […]
Grails supports sending all log messages(error,fatal etc.) to a support team or to yourself, by email (gmail account), via log4j with SMTP Appender. 1. For this we have to do some configration in Config.groovy as shown below: [groovy] // import SMTPAppender and Log4j Lever classes import org.apache.log4j.net.SMTPAppender import org.apache.log4j.Level … // Mail server Configration mail.error.server […]
Recently I was working on a Groovy and Grails Development project and had a requirement to sort multiple fields in a list of maps. I needed to sort the below list of maps by firstName, then by lastName and then by ascending age. It means first, the firstNames will be compared. If they are same, […]
In one of my projects, I was using redis database to collect some statistics and I thought of saving data into it at apache level. This would considerably enhance the speed of saving data as it would not require the interception of grails to save data. The first step for this was to install apache […]
In my recent project there was a use case to change repeat interval of job so that job runs after every 8 seconds instead of 1 second. [java] class TestJob { def concurrent = false static triggers = { simple repeatInterval: 1000l // execute job once in 1 sec } def execute() { println "executing […]
In Grails, We often use [java] render list as JSON. [/java] It renders json output without any formatting (spaces and new lines), often we need to provide users an option to receive formatted json (pretty printed) as response, so that it could easily be read and understood by users. We can easily do that using […]
To run your Grails application on SSL, firstly you need to configure the Tomcat server. Here in this example, I will show how to configure Tomcat instance and run Grails/Java application. For SSL/HTTPS: We need .keystore file. You can generate it by using command“keytool -genkey”. Run this command on linux terminal or window cmd, follow […]
Hi, In one of my Grails project, i needed to ‘Like’ any Facebook wall post using facebook API. I searched about it and found a way to achieve this using Facebook Graph API and thought it worth sharing. To achieve it, we should have a valid facebook access_token, which can be obtained using steps described […]
Hi, In my recent grails project, i needed to post images to the albums for Facebook Profile/ Fan page/ Group using facebook API. I searched a lot and find a way to achieve this using Facebook Graph API. To post any content over facebook, we need to have facebook access_token which can be obtained using […]