Re: Spring injection with java annotation?

Owen Jacobson <>
Thu, 24 Apr 2008 07:20:10 -0700 (PDT)
On Apr 24, 8:46 am, Alberto Sfolcini <> wrote:


I am wondering if I can use an annotation to inject property and avoid
to write getters and setters for each property.

Let's suppose my spring's bean looks like:

<bean id="test" class="">
    <property name="debug" value="true"/>
    <property name="firstname" value="Bill" />
    <property name="lastname" value="Gates" />

The Test class should look like:

public class Test{
   private boolean debug;
   private String firstname;
   private String lastname;

   // Setters and getters...

   public void setFirstname(String furstname) {
      this.firstname = firstname;

  etc etc...


What I would like to obtain is to avoid the setters and getters
methods by using an annotation:

public class Test{
   @Inject(name="debug", optional="false")
   private boolean debug;
   private String firstname;
   private String lastname;


So, let's see the @Inject interface:

public @interface Inject {
        String name() default "";
        boolean optional() default false;


Now, what I am missing is the injection engine, that should be written
in a class that extends the ApplicationContext I guess.

Can somebody give some help?



Spring supports most of the behaviour you want already, at least as of
2.5-series releases (and possibly 2.0-series releases).

Docs link: <

However, it will still use setFoo injection or constructor arguments -
you can't get away from that without rewriting part of Spring's actual
injection mechanism (which is well-buried). Furthermore, you don't
need to provide set/get pairs for properties you want injected: a set
method is enough. The only reason to add a get method is if you plan
on using the property elsewhere via its get method.


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