Spring Autowiring only works with Interface

Question

I am quite new to spring framework and came across the following issue.

I have an interface ClassA, which is implemented by classed ClassA1

Answer 1

You could use the @Qualifier annotation:

@Autowired
@Qualifier("class1")
ClassA classA1;

@Autowired
@Qualifier("class2")
ClassA classA2;

Ref: http://static.springsource.org/spring/docs/3.0.x/spring-framework-reference/html/beans.html#beans-autowired-annotation-qualifiers

or the @Resource annotation:

@Resource(name="class1")
ClassA classA1;

@Resource(name="class2")
ClassA classA2;

Ref: http://static.springsource.org/spring/docs/3.0.x/spring-framework-reference/html/beans.html#beans-resource-annotation