There are some well known best practices when editing spring xml files. Netbeans could help by warning when coding against these.
See http://www.onjava.com/pub/a/onjava/2006/01/25/spring-xml-configuration-best-practices.html?page=2

Warn on use of <constructor-arg index=..> when all constructor parameter types are different.

From the article:
<quotation>
4. Prefer type over index for constructor argument matching

Spring allows you to use a zero-based index to solve the ambiguity problem when a constructor has more than one arguments of the same type, or value 
tags are used. For example, instead of:

    <bean id="billingService"
        class="com.lizjason.spring.BillingService">
        <constructor-arg index="0" value="lizjason"/>
        <constructor-arg index="1" value="100"/>
    </bean>

It is better to use the type attribute like this:

    <bean id="billingService"
        class="com.lizjason.spring.BillingService">
        <constructor-arg type="java.lang.String"
            value="lizjason"/>
        <constructor-arg type="int" value="100"/>
    </bean>

Using index is somewhat less verbose, but it is more error-prone and hard to read compared to using the type attribute. You should only use index when 
there is an ambiguity problem in the constructor arguments.
</quotation>