@Service 和 @Autowired 注释的 Java/Spring 问题
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时间：2020-10-30 08:51:10 来源:igfitidea点击:
Java/Spring Problem with @Service and @Autowired annotations
提问by user6778654
[spring 3.0.5] [jboss 5.1]
[春季 3.0.5] [jboss 5.1]
I have several classes labeled as @Service, which implements thet same interface.
我有几个类标记为@Service，它们实现了相同的接口。
For example,
例如，
@Service(value="test1")
public TestImpl1 implements Test {}
@Service(value="test2")
public TestImpl2 implements Test {}
Next, I have the following structure
接下来，我有以下结构
public SomeClass {
@Autowired
@Qualifier("test1")
Test test1;
@Autowired
@Qualifier("test2")
Test test2;
I am getting an exception (at deployment)
我遇到异常（在部署时）
10:36:58,277 ERROR [[/test-web]] Servlet /test-web threw load()
exception
org.springframework.beans.factory.NoSuchBeanDefinitionException: No
unique bean of type [pl.tests] is defined: expected single matching
bean but found 2: [test1, test2]
at
org.springframework.beans.factory.support.DefaultListableBeanFactory.doReso lveDependency(DefaultListableBeanFactory.java:
796)
at
org.springframework.beans.factory.support.DefaultListableBeanFactory.resolv eDependency(DefaultListableBeanFactory.java:
703)
at
org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostPro cessor
$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:
474)
Anyone know how to solve this?
有谁知道如何解决这个问题？
T.
T。
采纳答案by Bozho
A few options:
几个选项：
- Use
@Resource(name="test1")in the injection point - can use the
javax.inject.Qualifermechanism. In short - you define an annotation (@Test) and annotate the annotation with@Qualifier. Then use@Autowired @Teston the injection point. - explicitly set qualifiers on the target bean. The docs say show only the xml version
<qualifier />, but try adding@Qualifier("test1")on the service definition
- 使用
@Resource(name="test1")的注射点 - 可以使用
javax.inject.Qualifer机制。简而言之 - 您定义了一个注释 (@Test) 并用@Qualifier. 然后@Autowired @Test在注射点使用。 - 在目标 bean 上显式设置限定符。文档说只显示 xml 版本
<qualifier />，但尝试添加@Qualifier("test1")服务定义
