how to convert uri string to complex object type in spring

Question

i just wonder, can i convert uri string to another object type ?

    @RequestMapping(value="/key/{keyDomain}", method=RequestMethod.GET)
    public String propertyEditor(@PathVariable(value="keyDomain") KeyDomain key, Model model){
        model.addAttribute("key", key);
        return "propertyEditor";
    }

and here my configuration

<beans:bean id="customEditorConfigurer" class="org.springframework.beans.factory.config.CustomEditorConfigurer">
        <beans:property name="customEditors">
            <beans:map>
                <!-- <beans:entry key="com.template.baseline.domain.KeyDomain" value="com.template.baseline.propertyEditor.KeyPropertyEditor"/>  -->
                <beans:entry key="com.template.baseline.domain.KeyDomain">
                    <beans:ref bean="keyDomainPropertyEditor"  />
                </beans:entry>
            </beans:map>
        </beans:property>
    </beans:bean>

<!-- key domain property editor bean -->
<beans:bean id="keyDomainPropertyEditor"  class="com.template.baseline.propertyEditor.KeyPropertyEditor">
    <beans:property name="keyDomain">
        <beans:bean class="com.template.baseline.domain.KeyDomain" />
    </beans:property>   
</beans:bean>

and propertyEditor Class :

public class KeyPropertyEditor extends PropertyEditorSupport{

    private KeyDomain keyDomain;

    /**
     * example : 10435
     * - 10 will be keyId
     * - 435 will be baseOfficeId
     */
    @Override
    public void setAsText(String text) throws IllegalArgumentException{
        KeyDomain keyDomain = new KeyDomain();
        keyDomain.setKeyId(Integer.parseInt(text.substring(0,1)));
        keyDomain.setBaseOfficeId(Integer.parseInt(text.substring(2,4)));       
        setValue(keyDomain);
    }

    @Override
    public String getAsText() {
        KeyDomain value = (KeyDomain) getValue();
        return (value != null ? value.toString() : "");
    }

    public void setKeyDomain(KeyDomain keyDomain) {
        this.keyDomain = keyDomain;
    }   
}

i thought that i can use Property Editor to convert my URI string become appropriate object type. i already made an implementation and configure CustomEditorConfigurer, but i always get ConversionNotSupportedException.

if i add initBinder at my controller, everything will just fine :

@InitBinder
public void setBinder(WebDataBinder dataBinder) {
    dataBinder.registerCustomEditor(KeyDomain.class, new KeyPropertyEditor());      
}

and i get Warning something like this

WARN : org.springframework.beans.factory.config.CustomEditorConfigurer - Passing PropertyEditor instances into CustomEditorConfigurer is deprecated: use PropertyEditorRegistrars or PropertyEditor class names instead. Offending key [com.template.baseline.domain.KeyDomain; offending editor instance: com.template.baseline.propertyEditor.KeyPropertyEditor@1a271f5

thanks for the answer.

ps : webBindingInitalizer injected on AnnotationMethodHandlerAdapter

<beans:bean id="AnnotationMethodHandlerAdapter" class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
    <beans:property name="webBindingInitializer">
        <beans:bean class="com.template.baseline.initialize.CustomWebBindingInitializer" />
    </beans:property>
</beans:bean>

and Implementation

public class CustomWebBindingInitializer implements WebBindingInitializer  {

public CustomWebBindingInitializer(){
    System.out.println("******** constructor *********");
}

public void initBinder(WebDataBinder binder, WebRequest request) {
    System.out.println("******** initBinder *********");
    binder.registerCustomEditor(KeyDomain.class, new KeyDomainPropertyEditor());
}

}

Answer 1

CustomEditorConfigurer has nothing to do with web request data binding.

If you want to register your PropertyEditor globablly, you need to implement WebBindingInitializer and supply AnnotationMethodHandlerAdapter with it:

<bean 
    class = "org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
    <proeprty name = "webBindingInitializer">
        <bean class = "MyWebBindingInitializer" />
    </property>
</bean>

Another option is to implement your conversion logic as a Formatter and configure it via FormattingConversionServiceFactoryBean and <mvc:annotation-driven>, see mvc-showcase sample.