AutowiredAnnotationBeanPostProcessor tolerates annotated no-arg constructors

Issue: SPR-15005
This commit is contained in:
Juergen Hoeller 2016-12-12 22:26:24 +01:00
parent b825528d01
commit 8b5ee4ef91
3 changed files with 34 additions and 8 deletions

View File

@ -305,10 +305,6 @@ public class AutowiredAnnotationBeanPostProcessor extends InstantiationAwareBean
". Found constructor with 'required' Autowired annotation already: " +
requiredConstructor);
}
if (candidate.getParameterCount() == 0) {
throw new IllegalStateException(
"Autowired annotation requires at least one argument: " + candidate);
}
boolean required = determineRequiredStatus(ann);
if (required) {
if (!candidates.isEmpty()) {

View File

@ -2184,6 +2184,15 @@ public class AutowiredAnnotationBeanPostProcessorTests {
assertNotNull(bf.getBean(ProvidedArgumentBean.class));
}
@Test
public void testAnnotatedDefaultConstructor() {
DefaultListableBeanFactory bf = new DefaultListableBeanFactory();
bf.addBeanPostProcessor(new AutowiredAnnotationBeanPostProcessor());
bf.registerBeanDefinition("annotatedBean", new RootBeanDefinition(AnnotatedDefaultConstructorBean.class));
assertNotNull(bf.getBean("annotatedBean"));
}
public static class ResourceInjectionBean {
@ -3411,7 +3420,14 @@ public class AutowiredAnnotationBeanPostProcessorTests {
tbs.add(new TestBean("tb2"));
return tbs;
}
}
public static class AnnotatedDefaultConstructorBean {
@Autowired
public AnnotatedDefaultConstructorBean() {
}
}
}

View File

@ -1,5 +1,5 @@
/*
* Copyright 2002-2014 the original author or authors.
* Copyright 2002-2016 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@ -742,6 +742,15 @@ public class InjectAnnotationBeanPostProcessorTests {
bf.destroySingletons();
}
@Test
public void testAnnotatedDefaultConstructor() {
DefaultListableBeanFactory bf = new DefaultListableBeanFactory();
bf.addBeanPostProcessor(new AutowiredAnnotationBeanPostProcessor());
bf.registerBeanDefinition("annotatedBean", new RootBeanDefinition(AnnotatedDefaultConstructorBean.class));
assertNotNull(bf.getBean("annotatedBean"));
}
public static class ResourceInjectionBean {
@ -750,7 +759,6 @@ public class InjectAnnotationBeanPostProcessorTests {
private TestBean testBean2;
@Inject
public void setTestBean2(TestBean testBean2) {
if (this.testBean2 != null) {
@ -819,7 +827,6 @@ public class InjectAnnotationBeanPostProcessorTests {
public static class TypedExtendedResourceInjectionBean extends ExtendedResourceInjectionBean<NestedTestBean> {
}
@ -1087,7 +1094,6 @@ public class InjectAnnotationBeanPostProcessorTests {
@Inject
private Map<String, TestBean> testBeanMap;
public Map<String, TestBean> getTestBeanMap() {
return this.testBeanMap;
}
@ -1346,4 +1352,12 @@ public class InjectAnnotationBeanPostProcessorTests {
}
}
public static class AnnotatedDefaultConstructorBean {
@Inject
public AnnotatedDefaultConstructorBean() {
}
}
}