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</head>
<body class="article">
<div id="header">
<h1>Spring Framework Getting Started Guide</h1>
</div>
<div id="content">
<div id="preamble">
<div class="sectionbody">
<div class="paragraph">
<p>This document aims to enable developers to create working software as quickly as possible with the Spring framework. This guide assumes you want to create a web application (the most common use case for Spring).</p>
</div>
<div class="admonitionblock note">
<table>
<tr>
<td class="icon">
<div class="title">Note</div>
</td>
<td class="content">
This document assumes you know how to use the other technologies and methodologies referenced within it. For example, when the document mentions dependency management, it&#8217;s not going to launch into an explanation of what dependency management is. The same goes for tools such as Maven, the popular dependency manager. Also, this guide skips installing Java and other tools, setting up your IDE, and so on. The focus is on Spring itself.
</td>
</tr>
</table>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_setup">Setup</h2>
<div class="sectionbody">
<div class="paragraph">
<p>To start using the Spring framework, you need the Spring framework libraries. You can get them in one of two ways: by creating dependences in Maven (or some other dependency manager) or by downloading them and adding them to your project manually. We find that using a dependency manager works best, but there are times when someone needs to directly download the jar files.</p>
</div>
<div class="sect2">
<h3 id="_creating_the_project">Creating the Project</h3>
<div class="paragraph">
<p>There are a number of ways to create a Spring project. You can:</p>
</div>
<div class="ulist">
<ul>
<li>
<p><a href="#Using-the-Spring-Initializr">Using the Spring Initializr</a></p>
</li>
<li>
<p><a href="#Creating-a-Dependency-on-Spring">Creating a Dependency on Spring</a></p>
</li>
<li>
<p><a href="#Downloading-the-Spring-Jar-Files">Downloading the Spring Jar Files</a></p>
</li>
</ul>
</div>
<div class="sect3">
<h4 id="Using-the-Spring-Initializr">Using the Spring Initializr</h4>
<div class="paragraph">
<p>Spring Boot offers an online tool that will create the dependency block of a Spring project for you. It can be found at the following URL:</p>
</div>
<div class="paragraph">
<p><a href="https://start.spring.io/" class="bare">https://start.spring.io/</a></p>
</div>
<div class="admonitionblock note">
<table>
<tr>
<td class="icon">
<div class="title">Note</div>
</td>
<td class="content">
For new users, we recommend using the full version. To do so, click the link at the bottom of the page that reads: "Switch to the full version".
</td>
</tr>
</table>
</div>
<div class="paragraph">
<p>For the sake of this example, we chose the default values and then selected <code>Web</code> and <code>Stormpath</code> from the Web list and <code>MySQL</code> under "SQL". Stormpath includes Spring Security, the Thymeleaf templating enging, and Spring MVC. That gives us everything we need to make a secure, MVC-driven web application, which the rest of this document describes doing. The resulting dependency block for use in Maven follows:</p>
</div>
<div class="listingblock">
<div class="content">
<pre class="highlight"><code class="language-xml" data-lang="xml">&lt;?xml version="1.0" encoding="UTF-8"?&gt;
&lt;project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"&gt;
  &lt;modelVersion&gt;4.0.0&lt;/modelVersion&gt;
  &lt;groupId&gt;com.example&lt;/groupId&gt;
  &lt;artifactId&gt;demo&lt;/artifactId&gt;
  &lt;version&gt;0.0.1-SNAPSHOT&lt;/version&gt;
  &lt;packaging&gt;jar&lt;/packaging&gt;
  &lt;name&gt;demo&lt;/name&gt;
  &lt;description&gt;Demo project for Spring Boot&lt;/description&gt;
  &lt;parent&gt;
    &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
    &lt;artifactId&gt;spring-boot-starter-parent&lt;/artifactId&gt;
    &lt;version&gt;1.5.3.RELEASE&lt;/version&gt;
    &lt;relativePath/&gt; &lt;!-- lookup parent from repository --&gt;
  &lt;/parent&gt;
  &lt;properties&gt;
    &lt;project.build.sourceEncoding&gt;UTF-8&lt;/project.build.sourceEncoding&gt;
    &lt;project.reporting.outputEncoding&gt;UTF-8&lt;/project.reporting.outputEncoding&gt;
    &lt;java.version&gt;1.8&lt;/java.version&gt;
    &lt;stormpath.version&gt;1.5.2&lt;/stormpath.version&gt;
  &lt;/properties&gt;
  &lt;dependencies&gt;
    &lt;dependency&gt;
      &lt;groupId&gt;com.stormpath.spring&lt;/groupId&gt;
      &lt;artifactId&gt;stormpath-default-spring-boot-starter&lt;/artifactId&gt;
    &lt;/dependency&gt;
    &lt;dependency&gt;
      &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
      &lt;artifactId&gt;spring-boot-starter-web&lt;/artifactId&gt;
    &lt;/dependency&gt;
    &lt;dependency&gt;
      &lt;groupId&gt;mysql&lt;/groupId&gt;
      &lt;artifactId&gt;mysql-connector-java&lt;/artifactId&gt;
      &lt;scope&gt;runtime&lt;/scope&gt;
    &lt;/dependency&gt;
    &lt;dependency&gt;
      &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
      &lt;artifactId&gt;spring-boot-starter-test&lt;/artifactId&gt;
      &lt;scope&gt;test&lt;/scope&gt;
    &lt;/dependency&gt;
  &lt;/dependencies&gt;
  &lt;dependencyManagement&gt;
    &lt;dependencies&gt;
      &lt;dependency&gt;
        &lt;groupId&gt;com.stormpath.sdk&lt;/groupId&gt;
        &lt;artifactId&gt;stormpath-bom&lt;/artifactId&gt;
        &lt;version&gt;${stormpath.version}&lt;/version&gt;
        &lt;type&gt;pom&lt;/type&gt;
        &lt;scope&gt;import&lt;/scope&gt;
      &lt;/dependency&gt;
    &lt;/dependencies&gt;
  &lt;/dependencyManagement&gt;
  &lt;build&gt;
    &lt;plugins&gt;
      &lt;plugin&gt;
        &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
        &lt;artifactId&gt;spring-boot-maven-plugin&lt;/artifactId&gt;
      &lt;/plugin&gt;
    &lt;/plugins&gt;
  &lt;/build&gt;
&lt;/project&gt;</code></pre>
</div>
</div>
</div>
<div class="sect3">
<h4 id="Creating-a-Dependency-on-Spring">Creating a Dependency on Spring</h4>
<div class="paragraph">
<p>To add the Spring framework to an existing project through Maven, insert the following block into your project&#8217;s dependencies:</p>
</div>
<div class="listingblock">
<div class="content">
<pre class="highlight"><code class="language-xml" data-lang="xml">&lt;dependencies&gt;
    &lt;dependency&gt;
        &lt;groupId&gt;org.springframework&lt;/groupId&gt;
        &lt;artifactId&gt;spring-context&lt;/artifactId&gt;
        &lt;version&gt;4.3.8.RELEASE&lt;/version&gt;
        &lt;scope&gt;runtime&lt;/scope&gt;
    &lt;/dependency&gt;
&lt;/dependencies&gt;</code></pre>
</div>
</div>
<div class="admonitionblock tip">
<table>
<tr>
<td class="icon">
<div class="title">Tip</div>
</td>
<td class="content">
Adjust the value of the <code>version</code> element to suit your needs. The list of available versions can be found at the download link mentioned next in this document. For new projects, we recommend the latest version. If you need to integrate with another project running an older version, you may want to choose that particular version.
</td>
</tr>
</table>
</div>
<div class="sect4">
<h5 id="Downloading-the-Spring-Jar-Files">Downloading the Spring Jar Files</h5>
<div class="paragraph">
<p>You can download the Spring framework from the following URL:</p>
</div>
<div class="paragraph">
<p><a href="http://repo.spring.io/release/org/springframework/spring/" class="bare">http://repo.spring.io/release/org/springframework/spring/</a></p>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_your_first_application">Your First Application</h2>
<div class="sectionbody">
<div class="paragraph">
<p>This section steps through creating a Spring application from scratch. As mentioned earlier, under <a href="#Using-the-Spring-Initializr">Using the Spring Initializr</a>, this document describes how to create a Spring application that uses Spring MVC, Spring Security, the Thymeleaf templating engine, and a MySQL database. Following time-honored tradition, we&#8217;ll build a "Hello, World!" web application.</p>
</div>
<div class="admonitionblock note">
<table>
<tr>
<td class="icon">
<div class="title">Note</div>
</td>
<td class="content">
The <a href="https://spring.io/guides/gs/securing-web/">Spring Security guide</a> offers a similar exercise.
</td>
</tr>
</table>
</div>
<div class="sect2">
<h3 id="_creating_the_views">Creating the Views</h3>
<div class="paragraph">
<p>This web application needs two simple views: a home view and a "Hello World" view. The home view is defined in the following Thymeleaf template:</p>
</div>
<div class="listingblock">
<div class="content">
<pre class="highlight"><code class="language-html" data-lang="html">&lt;!DOCTYPE html&gt;
&lt;html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org" xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity3"&gt;
    &lt;head&gt;
        &lt;title&gt;Spring Security Example&lt;/title&gt;
    &lt;/head&gt;
    &lt;body&gt;
        &lt;h1&gt;Welcome!&lt;/h1&gt;
        &lt;p&gt;Click &lt;a th:href="@{/hello}"&gt;here&lt;/a&gt; to see a greeting.&lt;/p&gt;
    &lt;/body&gt;
&lt;/html&gt;</code></pre>
</div>
</div>
<div class="paragraph">
<p>Store the home view template at <code>src/main/resources/templates/home.html</code>.</p>
</div>
<div class="paragraph">
<p>The home view includes a link (<code>/hello</code>) to the hello view. That template follows:</p>
</div>
<div class="listingblock">
<div class="content">
<pre class="highlight"><code class="language-html" data-lang="html">&lt;!DOCTYPE html&gt;
&lt;html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org"
      xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity3"&gt;
    &lt;head&gt;
        &lt;title&gt;Hello World!&lt;/title&gt;
    &lt;/head&gt;
    &lt;body&gt;
        &lt;h1&gt;Hello world!&lt;/h1&gt;
    &lt;/body&gt;
&lt;/html&gt;</code></pre>
</div>
</div>
<div class="paragraph">
<p>Store the hello view at <code>src/main/resources/templates/hello.html</code>.</p>
</div>
</div>
<div class="sect2">
<h3 id="_create_the_controller">Create the Controller</h3>
<div class="paragraph">
<p>An MVC application needs at least one controller. In this case, we need only one controller, as follows:</p>
</div>
<div class="listingblock">
<div class="content">
<pre class="highlight"><code class="language-java" data-lang="java">package hello;</code></pre>
</div>
</div>
<div class="paragraph">
<p>import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;</p>
</div>
<div class="paragraph">
<p>@Configuration
public class MvcConfig extends WebMvcConfigurerAdapter {</p>
</div>
<div class="literalblock">
<div class="content">
<pre>@Override
public void addViewControllers(ViewControllerRegistry registry) {
    registry.addViewController("/home").setViewName("home");
    registry.addViewController("/").setViewName("home");
    registry.addViewController("/hello").setViewName("hello");
    registry.addViewController("/login").setViewName("login");
}</pre>
</div>
</div>
<div class="paragraph">
<p>}</p>
</div>
</div>
</div>
</div>
</div>
<div id="footer">
<div id="footer-text">
Last updated 2017-06-05 13:32:01 CDT
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