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POSpring Forms - How to Check for Error on Specific Path
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  1. POSpring Forms - How to Check for Error on Specific Path
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    copied!<p>I'm using the Spring Form library to handle a search page in my application. Here is a snipped from my DD showing the bean configuration:</p> <pre><code>&lt;bean name="/search.html" class="myapp.web.AccountSearchController"&gt; &lt;property name="sessionForm" value="true"/&gt; &lt;property name="commandName" value="searchAccounts"/&gt; &lt;property name="commandClass" value="myapp.service.AccountSearch"/&gt; &lt;property name="validator"&gt; &lt;bean class="myapp.service.AccountSearchValidator"/&gt; &lt;/property&gt; &lt;property name="formView" value="accountSearch"/&gt; &lt;property name="successView" value="accountSearch"/&gt; &lt;/bean&gt; </code></pre> <p>The validator class is quite simple:</p> <pre><code>package myapp.service; import org.springframework.validation.Validator; import org.springframework.validation.Errors; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; public class AccountSearchValidator implements Validator { /** Logger for this class and subclasses */ protected final Log logger = LogFactory.getLog(getClass()); public boolean supports(Class clazz) { return AccountSearch.class.equals(clazz); } public void validate(Object obj, Errors errors) { AccountSearch accountSearch = (AccountSearch) obj; if (accountSearch == null) { errors.rejectValue("domainName", "error.accountSearch.neither-specified", null, "Value required."); } else if (accountSearch.getAccountId().isEmpty() &amp;&amp; accountSearch.getDomainName().isEmpty() ) { errors.rejectValue("domainName", "error.accountSearch.neither-specified", null, "Value required."); } } } </code></pre> <p>In my JSP, my form is displayed in an HTML table. I want field specific errors to be displayed under the respective field as a separate table row. Here's a snippet:</p> <pre><code> &lt;tr&gt; &lt;td align="right" valign="top"&gt;&lt;form:label path="domainName"&gt;Domain Name&lt;/form:label&gt;:&lt;/td&gt; &lt;td&gt;&lt;form:input path="domainName" size="30"/&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt;&amp;nbsp;&lt;/td&gt; &lt;td&gt;&lt;form:errors path="domainName" cssClass="error"/&gt;&lt;/td&gt; &lt;/tr&gt; </code></pre> <p>The question I have is - how can I make the output of the error row conditional on the existence of the error? Is the Validator instance accessible from my JSP? What would the test be for a c:if tag?</p> <p>Thanks,</p> <p>-aj</p>
 

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