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POWhy isn't spring using my Converter<String, Date>?
 

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  1. POWhy isn't spring using my Converter<String, Date>?
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    <p>I have this in my applicationContext.xml</p> <pre><code>&lt;bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter" /&gt; &lt;mvc:annotation-driven conversion-service="conversionService"/&gt; &lt;bean id="conversionService" class="org.springframework.context.support.ConversionServiceFactoryBean"&gt; &lt;property name="converters"&gt; &lt;set&gt; &lt;bean class="mycompany.AsOfDateConverter"/&gt; &lt;bean class="mycompany.CustomerConverter"/&gt; &lt;bean class="mycompany.FooConverter"/&gt; &lt;/set&gt; &lt;/property&gt; &lt;/bean&gt; </code></pre> <p>AsOfDateConverter looks like</p> <pre><code>public class AsOfDateConverter implements Converter&lt;String, Date&gt; { @Override public Date convert(String source) { if(source == null) return new Date(); //... else parse date. not shown. } } </code></pre> <p>But Spring never picks up my DateConverter. Instead I get this </p> <pre><code>org.springframework.beans.ConversionNotSupportedException: Failed to convert value of type 'java.lang.String' to required type 'java.util.Date'; nested exception is java.lang.IllegalStateException: Cannot convert value of type [java.lang.String] to required type [java.util.Date]: no matching editors or conversion strategy found at org.springframework.beans.SimpleTypeConverter.convertIfNecessary(SimpleTypeConverter.java:53) at org.springframework.validation.DataBinder.convertIfNecessary(DataBinder.java:534) at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.resolveRequestParam(HandlerMethodInvoker.java:506) at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.resolveHandlerArguments(HandlerMethodInvoker.java:339) at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:170) </code></pre> <p>Two solutions needed: a) Why isn't it using my converter? b) if date is null then can converter still call my converter?</p> <p>I have all this working with PropertyEditors but wanted to port to Converters. </p> <p>But I can't figure out why Spring MVC does not use my DateConverter. I have it implemented so that if source</p>
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    1. USAmir Raminfar
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    1. COCan you post the source for the class from which this exception is thrown?
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      1. USabalogh
    2. COIt looks correct. But I found one strange thing: The examples I found and the Reference (5.5.5 Configuring a ConversionService) uses a {{<list>}} instead of {{<set>>}}. Even if the method parameter is Set.
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    3. CODo you mix Converters and PropertyEditors?
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      1. USRalph
 

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