Spring pdf example scala

Fido says woof felix says meow i actually got more output than that from both sbt and log4j, but that was the important part. Scala is a modern multiparadigm programming language designed to express common programming patterns in a concise, elegant, and typesafe way. The scalacompile and scaladoc tasks consume scala code in two ways. Parametric polymorphism as a complementary way to promote reuse. As another example, paste the code below in the left pane of your scala worksheet as shown in the image, and run the code. For example, imagine we have the following scala class.

This article demonstrate how to create pdf files with java and the itext library. Spring scala tries to fix this by making spring a firstclass citizen of the scala language. Your contribution will go a long way in helping us. Contribute to robb1escala spring4 development by creating an account on github. You want to use the java spring framework library in your scala application solution. A quick and practical guide to pdf conversions in java. Source code from my talk at spring io 2016 in barcelona. When people talk about their experience with scala, they often say that it is possible to use scala as a better java. This demonstrates some basic differences from java. Check that your java version is 8 or higher with the java version command and if needed, install it from oracles site. See instructions on including this in an sbt, maven, ivy, or gradle project. The former is used to locate classes referenced by the source code, and will typically contain scalalibrary along with other libraries.

At that time, calling scala an improved version of java was questionable but at. The latter is used to load and execute the scala compiler and scaladoc tool, respectively, and should only contain the scalacompiler library. Finally, when i ran my scala spring framework dependency injection example, i got this very exciting output. Scala allows a limited form of mutliple inheritance, that among some surprising things, allows an encoding of virtualextension classes that works well with fp code. Pdf generation in java is easy with the open source itext library. How to use spring autowired or manually wired in scala. This is an excerpt from the scala cookbook partially modified for the internet. Read and generate pdf in java itext tutorial howtodoinjava. A quick and practical guide to creating pdf files in java. In my java days i used the spring framework spring all the time for different things, primarily involving dependency injection di and pretty much anything related to a database.

Pdf version quick guide resources job search discussion. We recommend copying this jar file to a shared location in hdfs. This example extracts the text contents of a pdf for use in other systems. Spring mvc file download example examples java code geeks. Spring boot serve pdf tutorial creating pdf report in spring boot. In my experience, the only real changes in using the. Scala source code is intended to be compiled to java bytecode, so that the resulting executable code runs on a java virtual machine.

In the above code, we have created an object scalaexample. Return generated pdf using spring mvc stack overflow. Simple examples a list of simple scala snippets, useful to understand some basics of the language, as well as to see what scala code looks like. You want to use the java spring framework library in your scala application. A key feature of annotations is that they rely on specifying namevalue pairs to. For example, there has been a now defunct springscala project 3. Introduction to scala and spark sei digital library. Obviously, you can use the java spring framework in scala today, without spring. Learning concurrent programming in scala second edition 2017 by aleksandar prokopec. Map as a map, it decided to apply the strategy it uses to serialize javabeans, namely finding all of the methods that meet javabean conventions, and using those as the elements of the json object. After the bundle has been activated, the spring dm extender will find, create and start your spring applicationcontexts. Spring web mvc with pdf view example using itext 5.

In my experience, the only real changes in using the spring framework in scala applications involve how you cast the objects you instantiate from. Get the jar, set up your code, then start creating pdf documents. Log4j 2 has a companion log4j scala project that contains a convenient scala wrapper for the logger api. Besides studying them online you may download the ebook in pdf format. Spring is a java application framework for developing java. Lets learn how to generate pdf file in java using itext library. Scala has been created by martin odersky and he released the first version in 2003. Guide for data science professionals 2017 by pascal bugnion, arun manivannan, patrick r. Introduction to scala programming language journaldev.

Designed to be concise, many of scalas design decisions aimed to address criticisms of java. Just open sourced a sample maven project that demonstrates using scala with spring mvc and a bunch of other libraries check it out here. If your routebuilder classes have been defined in the org. For example if you annotate a field named id, the getter method will be named getid and the setter method will be named setid. I just announced the new learn spring course, focused on the fundamentals of. The following shows how to create a spring web application in scala, maven, spring boot the code for this is available on github. This support requires access to the spark assembly jar that is shipped as part of the spark distribution. It contains a main method and display message using println method. To very quickly revisit the sample, it is a very simple web.

I have now updated the sample with the latest version of spring boot and some of the supporting libraries. Beanproperty annotation that adds this annotation to a field and the compiler automatically generate getter and setter methods for the field. Discussion of homework 2 and parallels with vector example studied in the lab. Click create a project for me to download the zipped project. For example, we could extend our readme example by filtering the lines in the file that contain a word, such as python, as shown in example 24 for python and example 25 for scala. When writing scala code which interoperates with java, there are a few differences in annotation syntax to note. These examples are extracted from open source projects. A while back i had tried out a small spring boot based sample with scala as the language and found that the combination works out quite nicely no big surprises there actually as scala programs ultimately run in the jvm. Slides pdf 20925 scaling scala to the database javaone 20, san francisco, ca, usa. And indeed, many companies, especially the ones that adopted scala around 20082009, didnt want to give up the familiar tooling and simply integrated scala into existing workflows based on maven. Log4j 2 scala api is dependent on the log4j 2 api, scala runtime library and reflection.

The functional implementation makes it look like scala is a language thats specialized for functional operations on arrays. Java has userdefined metadata in the form of annotations. I became curious how spring would work with scala, so i created a small scala spring dependency injection example project, which im sharing here. The type system support includes variance annotations, generic classes, upper and lower bounds, explicitly typed self references, views and polymorphic methods. Just like any programming language, scala has its own, different way of doing things, and using a pure java framework like spring in scala will just feel too javaesque. Simplicity of scala scala, as you will see in this tutorial, does a lot of the grunt work and plumbing for developers. How to create a view for generating pdf documents in spring web mvc using. A scala spring framework dependency injection example. The myth of using scala as a better java applied scala.