Getting started with Velocity templating engine: Constructing HTML content in a Spring-based Java application

1. Create a velocity template file – say, helloworld.vm, and add this to classpath. Add some html content.

<h1>Hello World!</h1>

2. If I want to make ‘Hello World’ part dynamic, here’s what you need to do.


3. Now, to ask Velocity engine to replace the helloContent dynamically,

i) construct a map and add a key ‘helloContent’ and a value.

Map model = new HashMap();
model.put("helloContent", "Hello Velocity!);

ii) Invoke Velocity Engine and get the constructed HTML text

String emailContent = VelocityEngineUtils.mergeTemplateIntoString( velocityEngine, "helloworld.vm", model);

iii) velocityEngine is something we need to inject through Spring IoC (bean context).

<bean id="velocityEngine">
<property name="velocityProperties">

4. You’ll get the resultant HTML content in emailContent variable which you use for emails/displaying web pages.


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