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| <a href="../" title="back to Plugins"><< back to Plugins</a> |
| |
| <h1 class="no_toc" id="bean-validation-plugin">Bean Validation Plugin</h1> |
| |
| <ul id="markdown-toc"> |
| <li><a href="#bean-validation" id="markdown-toc-bean-validation">Bean Validation</a></li> |
| <li><a href="#setup" id="markdown-toc-setup">Setup</a></li> |
| <li><a href="#configuration" id="markdown-toc-configuration">Configuration</a></li> |
| <li><a href="#bean-validation-example" id="markdown-toc-bean-validation-example">Bean Validation Example</a></li> |
| </ul> |
| |
| <h2 id="bean-validation">Bean Validation</h2> |
| |
| <p>The Bean Validation plugin implements a bridge to use Bean Validation in struts actions. Bean Validation has been |
| specified in JSR 303 and is part of the JavaEE platform. Full-fledged application servers already bring validation |
| providers which can be leveraged by this plugin. The plugin integrates with other struts features like:</p> |
| |
| <ul> |
| <li>i18n</li> |
| <li>model driven</li> |
| <li>AJAX Validation</li> |
| <li>workflow</li> |
| </ul> |
| |
| <h2 id="setup">Setup</h2> |
| |
| <p>In order to use the Bean Validation plugin, you first need to add the JAR file to the <code class="language-plaintext highlighter-rouge">WEB-INF/lib</code> directory of your |
| application or include the dependency in your project’s Maven POM file.</p> |
| |
| <p><strong>pom.xml</strong></p> |
| |
| <div class="language-xml highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="nt"><dependency></span> |
| <span class="nt"><groupId></span>org.apache.struts<span class="nt"></groupId></span> |
| <span class="nt"><artifactId></span>struts2-bean-validation-plugin<span class="nt"></artifactId></span> |
| <span class="nt"><version></span>X.X.X<span class="nt"></version></span> |
| <span class="nt"></dependency></span> |
| </code></pre></div></div> |
| |
| <p>Where X.X.X is the current version of Struts 2. Please remember that the Bean Validation Plugin is available from |
| version 2.5.</p> |
| |
| <h2 id="configuration">Configuration</h2> |
| |
| <p>This sample shows the configuration constants the plugin provides. It also shows how to enable bean-validation |
| by extending your own application package from <code class="language-plaintext highlighter-rouge">struts-bean-validation</code> which comes along with the plugin.</p> |
| |
| <p><strong>struts.xml</strong></p> |
| |
| <div class="language-xml highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="nt"><struts></span> |
| <span class="nt"><constant</span> <span class="na">name=</span><span class="s">"struts.beanValidation.providerClass"</span> <span class="na">value=</span><span class="s">"org.hibernate.validator.HibernateValidator"</span><span class="nt">/></span> |
| <span class="nt"><constant</span> <span class="na">name=</span><span class="s">"struts.beanValidation.ignoreXMLConfiguration"</span> <span class="na">value=</span><span class="s">"false"</span><span class="nt">/></span> |
| <span class="nt"><constant</span> <span class="na">name=</span><span class="s">"struts.beanValidation.convertMessageToUtf"</span> <span class="na">value=</span><span class="s">"false"</span><span class="nt">/></span> |
| <span class="nt"><constant</span> <span class="na">name=</span><span class="s">"struts.beanValidation.convertMessageFromEncoding"</span> <span class="na">value=</span><span class="s">"ISO-8859-1"</span><span class="nt">/></span> |
| |
| <span class="nt"><package</span> <span class="na">name=</span><span class="s">"my-bean-validation"</span> <span class="na">extends=</span><span class="s">"struts-bean-validation"</span><span class="nt">></span> |
| <span class="nt"></package></span> |
| <span class="nt"></struts></span> |
| </code></pre></div></div> |
| |
| <p>Here is another example that shows how you can combine bean-validation with other plugins by configuring your own |
| Interceptor-Stack (note: this is just a very short example. In a real app you should take more care about your stack). |
| You can combine bean validation with classic struts validation (or disable either) by putting the according interceptors |
| in your stack (or by removing them from your stack).</p> |
| |
| <p><strong>struts.xml</strong></p> |
| |
| <div class="language-xml highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="nt"><package</span> <span class="na">name=</span><span class="s">"my-app-package"</span> <span class="na">extends=</span><span class="s">"struts-default"</span><span class="nt">></span> |
| <span class="nt"><interceptors></span> |
| <span class="nt"><interceptor></span> |
| name="beanValidation" |
| class="org.apache.struts.beanvalidation.validation.interceptor.BeanValidationInterceptor"> |
| <span class="nt"></interceptor></span> |
| <span class="nt"><interceptor-stack</span> <span class="na">name=</span><span class="s">"appDefaultStack"</span><span class="nt">></span> |
| <span class="nt"><interceptor-ref</span> <span class="na">name=</span><span class="s">"beanValidation"</span><span class="nt">/></span> |
| <span class="nt"><interceptor-ref</span> <span class="na">name=</span><span class="s">"defaultStack"</span><span class="nt">/></span> |
| <span class="nt"></interceptor-stack></span> |
| <span class="nt"></interceptors></span> |
| <span class="nt"></package></span> |
| </code></pre></div></div> |
| |
| <h2 id="bean-validation-example">Bean Validation Example</h2> |
| |
| <p>Here is an example Action that makes use of bean validation. Note that some of the validation annotations are taken |
| from <code class="language-plaintext highlighter-rouge">javax</code> package (which is defined in the JSR) while others are taken from the validaton provider (in this |
| case: <code class="language-plaintext highlighter-rouge">hibernate</code>). You can specifiy own text keys in the <code class="language-plaintext highlighter-rouge">message</code> attribute of the annotations. If you do that the |
| whole struts i18n mechanism kicks in to resolve those text keys.</p> |
| |
| <p><strong>com.example.actions.BeanValidationAction</strong></p> |
| |
| <div class="language-java highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="kn">package</span> <span class="nn">com.example.actions</span><span class="o">;</span> |
| |
| <span class="kn">import</span> <span class="nn">com.opensymphony.xwork2.ActionSupport</span><span class="o">;</span> |
| <span class="kn">import</span> <span class="nn">org.apache.struts.beanvalidation.constraints.FieldMatch</span><span class="o">;</span> |
| <span class="kn">import</span> <span class="nn">org.apache.struts2.convention.annotation.Action</span><span class="o">;</span> |
| <span class="kn">import</span> <span class="nn">org.apache.struts2.convention.annotation.Namespace</span><span class="o">;</span> |
| <span class="kn">import</span> <span class="nn">org.apache.struts2.convention.annotation.ParentPackage</span><span class="o">;</span> |
| <span class="kn">import</span> <span class="nn">org.apache.struts2.convention.annotation.Result</span><span class="o">;</span> |
| <span class="kn">import</span> <span class="nn">org.apache.struts2.interceptor.validation.SkipValidation</span><span class="o">;</span> |
| <span class="kn">import</span> <span class="nn">org.hibernate.validator.constraints.Email</span><span class="o">;</span> |
| <span class="kn">import</span> <span class="nn">org.hibernate.validator.constraints.NotBlank</span><span class="o">;</span> |
| <span class="kn">import</span> <span class="nn">org.hibernate.validator.constraints.ScriptAssert</span><span class="o">;</span> |
| <span class="kn">import</span> <span class="nn">org.hibernate.validator.constraints.URL</span><span class="o">;</span> |
| |
| <span class="kn">import</span> <span class="nn">javax.validation.constraints.*</span><span class="o">;</span> |
| <span class="kn">import</span> <span class="nn">java.util.Date</span><span class="o">;</span> |
| |
| |
| <span class="nd">@Namespace</span><span class="o">(</span><span class="s">"/bean-validation"</span><span class="o">)</span> |
| <span class="nd">@ParentPackage</span><span class="o">(</span><span class="s">"my-bean-validation"</span><span class="o">)</span> |
| <span class="nd">@Action</span><span class="o">(</span><span class="n">results</span> <span class="o">=</span> <span class="o">{</span> |
| <span class="nd">@Result</span><span class="o">(</span><span class="n">name</span> <span class="o">=</span> <span class="s">"input"</span><span class="o">,</span> <span class="n">location</span> <span class="o">=</span> <span class="s">"bean-validation.jsp"</span><span class="o">),</span> |
| <span class="nd">@Result</span><span class="o">(</span><span class="n">name</span> <span class="o">=</span> <span class="s">"success"</span><span class="o">,</span> <span class="n">location</span> <span class="o">=</span> <span class="s">"/WEB-INF/validation/successFieldValidatorsExample.jsp"</span><span class="o">)</span> |
| <span class="o">})</span> |
| <span class="nd">@FieldMatch</span><span class="o">(</span><span class="n">first</span> <span class="o">=</span> <span class="s">"fieldExpressionValidatorField"</span><span class="o">,</span> <span class="n">second</span> <span class="o">=</span> <span class="s">"requiredValidatorField"</span><span class="o">,</span> <span class="n">message</span> <span class="o">=</span> <span class="s">"requiredValidatorField and fieldExpressionValidatorField are not matching"</span><span class="o">)</span> |
| <span class="nd">@ScriptAssert</span><span class="o">(</span><span class="n">lang</span> <span class="o">=</span> <span class="s">"javascript"</span><span class="o">,</span> <span class="n">script</span> <span class="o">=</span> <span class="s">"_this.dateValidatorField != null && _this.dateValidatorField.before(new java.util.Date())"</span><span class="o">,</span> <span class="n">message</span> <span class="o">=</span> <span class="s">"Date need to before now"</span><span class="o">)</span> |
| <span class="kd">public</span> <span class="kd">class</span> <span class="nc">BeanValidationExampleAction</span> <span class="kd">extends</span> <span class="nc">ActionSupport</span> <span class="o">{</span> |
| <span class="nd">@NotNull</span> |
| <span class="kd">private</span> <span class="nc">String</span> <span class="n">requiredValidatorField</span> <span class="o">=</span> <span class="kc">null</span><span class="o">;</span> |
| |
| <span class="nd">@NotBlank</span> |
| <span class="kd">private</span> <span class="nc">String</span> <span class="n">requiredStringValidatorField</span> <span class="o">=</span> <span class="kc">null</span><span class="o">;</span> |
| |
| <span class="nd">@NotNull</span><span class="o">(</span><span class="n">message</span> <span class="o">=</span> <span class="s">"your.text.key.here"</span><span class="o">)</span> |
| <span class="nd">@Min</span><span class="o">(</span><span class="mi">1</span><span class="o">)</span> |
| <span class="nd">@Max</span><span class="o">(</span><span class="mi">10</span><span class="o">)</span> |
| <span class="kd">private</span> <span class="nc">Integer</span> <span class="n">integerValidatorField</span> <span class="o">=</span> <span class="kc">null</span><span class="o">;</span> |
| |
| <span class="nd">@NotNull</span> |
| <span class="kd">private</span> <span class="nc">Date</span> <span class="n">dateValidatorField</span> <span class="o">=</span> <span class="kc">null</span><span class="o">;</span> |
| |
| <span class="nd">@NotNull</span> |
| <span class="nd">@Size</span><span class="o">(</span><span class="n">min</span> <span class="o">=</span> <span class="mi">4</span><span class="o">,</span> <span class="n">max</span> <span class="o">=</span> <span class="mi">64</span><span class="o">)</span> |
| <span class="nd">@Email</span> |
| |
| <span class="kd">private</span> <span class="nc">String</span> <span class="n">emailValidatorField</span> <span class="o">=</span> <span class="kc">null</span><span class="o">;</span> |
| |
| <span class="nd">@NotNull</span> |
| <span class="nd">@Size</span><span class="o">(</span><span class="n">min</span> <span class="o">=</span> <span class="mi">4</span><span class="o">,</span> <span class="n">max</span> <span class="o">=</span> <span class="mi">64</span><span class="o">)</span> |
| <span class="nd">@URL</span> |
| <span class="kd">private</span> <span class="nc">String</span> <span class="n">urlValidatorField</span> <span class="o">=</span> <span class="kc">null</span><span class="o">;</span> |
| |
| <span class="nd">@NotNull</span> |
| <span class="nd">@Size</span><span class="o">(</span><span class="n">min</span> <span class="o">=</span> <span class="mi">2</span><span class="o">,</span> <span class="n">max</span> <span class="o">=</span> <span class="mi">4</span><span class="o">)</span> |
| <span class="kd">private</span> <span class="nc">String</span> <span class="n">stringLengthValidatorField</span> <span class="o">=</span> <span class="kc">null</span><span class="o">;</span> |
| |
| <span class="nd">@Pattern</span><span class="o">(</span><span class="n">regexp</span> <span class="o">=</span> <span class="s">"[^<>]+"</span><span class="o">)</span> |
| <span class="kd">private</span> <span class="nc">String</span> <span class="n">regexValidatorField</span> <span class="o">=</span> <span class="kc">null</span><span class="o">;</span> |
| |
| <span class="kd">private</span> <span class="nc">String</span> <span class="n">fieldExpressionValidatorField</span> <span class="o">=</span> <span class="kc">null</span><span class="o">;</span> |
| |
| |
| <span class="kd">public</span> <span class="nc">Date</span> <span class="nf">getDateValidatorField</span><span class="o">()</span> <span class="o">{</span> |
| |
| <span class="k">return</span> <span class="n">dateValidatorField</span><span class="o">;</span> |
| <span class="o">}</span> |
| |
| <span class="kd">public</span> <span class="kt">void</span> <span class="nf">setDateValidatorField</span><span class="o">(</span><span class="nc">Date</span> <span class="n">dateValidatorField</span><span class="o">)</span> <span class="o">{</span> |
| <span class="k">this</span><span class="o">.</span><span class="na">dateValidatorField</span> <span class="o">=</span> <span class="n">dateValidatorField</span><span class="o">;</span> |
| <span class="o">}</span> |
| |
| <span class="kd">public</span> <span class="nc">String</span> <span class="nf">getEmailValidatorField</span><span class="o">()</span> <span class="o">{</span> |
| <span class="k">return</span> <span class="n">emailValidatorField</span><span class="o">;</span> |
| <span class="o">}</span> |
| |
| <span class="kd">public</span> <span class="kt">void</span> <span class="nf">setEmailValidatorField</span><span class="o">(</span><span class="nc">String</span> <span class="n">emailValidatorField</span><span class="o">)</span> <span class="o">{</span> |
| <span class="k">this</span><span class="o">.</span><span class="na">emailValidatorField</span> <span class="o">=</span> <span class="n">emailValidatorField</span><span class="o">;</span> |
| <span class="o">}</span> |
| |
| <span class="kd">public</span> <span class="nc">Integer</span> <span class="nf">getIntegerValidatorField</span><span class="o">()</span> <span class="o">{</span> |
| <span class="k">return</span> <span class="n">integerValidatorField</span><span class="o">;</span> |
| <span class="o">}</span> |
| |
| <span class="kd">public</span> <span class="kt">void</span> <span class="nf">setIntegerValidatorField</span><span class="o">(</span><span class="nc">Integer</span> <span class="n">integerValidatorField</span><span class="o">)</span> <span class="o">{</span> |
| <span class="k">this</span><span class="o">.</span><span class="na">integerValidatorField</span> <span class="o">=</span> <span class="n">integerValidatorField</span><span class="o">;</span> |
| <span class="o">}</span> |
| |
| <span class="kd">public</span> <span class="nc">String</span> <span class="nf">getRegexValidatorField</span><span class="o">()</span> <span class="o">{</span> |
| <span class="k">return</span> <span class="n">regexValidatorField</span><span class="o">;</span> |
| <span class="o">}</span> |
| |
| <span class="kd">public</span> <span class="kt">void</span> <span class="nf">setRegexValidatorField</span><span class="o">(</span><span class="nc">String</span> <span class="n">regexValidatorField</span><span class="o">)</span> <span class="o">{</span> |
| <span class="k">this</span><span class="o">.</span><span class="na">regexValidatorField</span> <span class="o">=</span> <span class="n">regexValidatorField</span><span class="o">;</span> |
| <span class="o">}</span> |
| |
| <span class="kd">public</span> <span class="nc">String</span> <span class="nf">getRequiredStringValidatorField</span><span class="o">()</span> <span class="o">{</span> |
| <span class="k">return</span> <span class="n">requiredStringValidatorField</span><span class="o">;</span> |
| <span class="o">}</span> |
| |
| <span class="kd">public</span> <span class="kt">void</span> <span class="nf">setRequiredStringValidatorField</span><span class="o">(</span><span class="nc">String</span> <span class="n">requiredStringValidatorField</span><span class="o">)</span> <span class="o">{</span> |
| <span class="k">this</span><span class="o">.</span><span class="na">requiredStringValidatorField</span> <span class="o">=</span> <span class="n">requiredStringValidatorField</span><span class="o">;</span> |
| <span class="o">}</span> |
| |
| <span class="kd">public</span> <span class="nc">String</span> <span class="nf">getRequiredValidatorField</span><span class="o">()</span> <span class="o">{</span> |
| <span class="k">return</span> <span class="n">requiredValidatorField</span><span class="o">;</span> |
| <span class="o">}</span> |
| |
| <span class="kd">public</span> <span class="kt">void</span> <span class="nf">setRequiredValidatorField</span><span class="o">(</span><span class="nc">String</span> <span class="n">requiredValidatorField</span><span class="o">)</span> <span class="o">{</span> |
| <span class="k">this</span><span class="o">.</span><span class="na">requiredValidatorField</span> <span class="o">=</span> <span class="n">requiredValidatorField</span><span class="o">;</span> |
| <span class="o">}</span> |
| |
| <span class="kd">public</span> <span class="nc">String</span> <span class="nf">getStringLengthValidatorField</span><span class="o">()</span> <span class="o">{</span> |
| <span class="k">return</span> <span class="n">stringLengthValidatorField</span><span class="o">;</span> |
| <span class="o">}</span> |
| |
| <span class="kd">public</span> <span class="kt">void</span> <span class="nf">setStringLengthValidatorField</span><span class="o">(</span><span class="nc">String</span> <span class="n">stringLengthValidatorField</span><span class="o">)</span> <span class="o">{</span> |
| <span class="k">this</span><span class="o">.</span><span class="na">stringLengthValidatorField</span> <span class="o">=</span> <span class="n">stringLengthValidatorField</span><span class="o">;</span> |
| <span class="o">}</span> |
| |
| <span class="kd">public</span> <span class="nc">String</span> <span class="nf">getFieldExpressionValidatorField</span><span class="o">()</span> <span class="o">{</span> |
| <span class="k">return</span> <span class="n">fieldExpressionValidatorField</span><span class="o">;</span> |
| <span class="o">}</span> |
| |
| <span class="kd">public</span> <span class="kt">void</span> <span class="nf">setFieldExpressionValidatorField</span><span class="o">(</span> |
| <span class="nc">String</span> <span class="n">fieldExpressionValidatorField</span><span class="o">)</span> <span class="o">{</span> |
| <span class="k">this</span><span class="o">.</span><span class="na">fieldExpressionValidatorField</span> <span class="o">=</span> <span class="n">fieldExpressionValidatorField</span><span class="o">;</span> |
| <span class="o">}</span> |
| |
| <span class="kd">public</span> <span class="nc">String</span> <span class="nf">getUrlValidatorField</span><span class="o">()</span> <span class="o">{</span> |
| <span class="k">return</span> <span class="n">urlValidatorField</span><span class="o">;</span> |
| <span class="o">}</span> |
| |
| <span class="kd">public</span> <span class="kt">void</span> <span class="nf">setUrlValidatorField</span><span class="o">(</span><span class="nc">String</span> <span class="n">urlValidatorField</span><span class="o">)</span> <span class="o">{</span> |
| <span class="k">this</span><span class="o">.</span><span class="na">urlValidatorField</span> <span class="o">=</span> <span class="n">urlValidatorField</span><span class="o">;</span> |
| <span class="o">}</span> |
| <span class="o">}</span> |
| </code></pre></div></div> |
| |
| </section> |
| </article> |
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