Java ComponentScan excludeFilters 在 Spring 4.0.6.RELEASE 中不起作用
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/25550494/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
ComponentScan excludeFilters Not Working In Spring 4.0.6.RELEASE
提问by Ripu Daman
I have a class which I want to exclude while component scanning. I am using the below code to do that but that doesn't seem to work although everything seems to be right
我有一个要在组件扫描时排除的类。我正在使用下面的代码来做到这一点，但这似乎不起作用，尽管一切似乎都是正确的
@ComponentScan(basePackages = { "common", "adapter", "admin"}, excludeFilters = { @ComponentScan.Filter(type = FilterType.ASSIGNABLE_TYPE, value = ServiceImpl.class) })
Actually I want have "ServiceImpl" class, which implements "Service" interface, is being used in my rest api logic and while doing the integration test of an api I want to exclude this implmentation and load the mocked implementation. But this doesn't seem to happen as even after using the above I am getting the below error
实际上，我想要实现“Service”接口的“ServiceImpl”类正在我的其余 api 逻辑中使用，并且在对 api 进行集成测试时，我想排除此实现并加载模拟实现。但这似乎并没有发生，因为即使在使用上述内容后我也收到以下错误
No qualifying bean of type [admin.Service] is defined: expected single matching bean but found 2: ServiceMockImpl,ServiceImpl
I spent too much of time on this but nothing works.
我在这上面花了太多时间，但没有任何效果。
Any help is appreciated.
任何帮助表示赞赏。
采纳答案by Ripu Daman
After lot of work and research I noticed that Spring's behavior is little weird in term of component scanning.
经过大量的工作和研究，我注意到 Spring 在组件扫描方面的行为有点奇怪。
Artifacts were like this :
文物是这样的：
ServiceImplis the real implementation class which implements Serviceinterface.
ServiceMockImplis the mocked implantation class which implements Serviceinterface.
ServiceImpl是实现Service接口的真正实现类。
ServiceMockImpl是实现Service接口的模拟植入类。
I wanted to tweak the component scanning so that it only loads the ServiceMockImplbut not ServiceImpl.
我想调整组件扫描，使其只加载ServiceMockImpl但不加载ServiceImpl.
I had to add the @ComponentScan.Filter(type = FilterType.ASSIGNABLE_TYPE, value = ServiceImpl.class), in the @ComponentScanof test configuration class, to exclude that particular class from component scanning. But both the classes were getting loaded even after doing the above changes and tests were failing.
我必须@ComponentScan.Filter(type = FilterType.ASSIGNABLE_TYPE, value = ServiceImpl.class)在@ComponentScan测试配置类中添加 , 以从组件扫描中排除该特定类。但是即使在进行上述更改并且测试失败后，这两个类仍在加载。
After lot of work and research I found that the ServiceImplwas getting loaded because of the other class which was getting loaded and has @ComponentScanfor all packages on top of in it. So I added the code to exclude the Applicationclass from the component scanning as follows @ComponentScan.Filter(type = FilterType.ASSIGNABLE_TYPE, value = Application.class).
经过大量的工作和研究，我发现它ServiceImpl被加载是因为另一个类正在被加载并且@ComponentScan所有包都在它上面。所以我添加了代码以Application从组件扫描中排除该类，如下所示@ComponentScan.Filter(type = FilterType.ASSIGNABLE_TYPE, value = Application.class)。
After that it worked as expected.
之后它按预期工作。
Code like below
代码如下
@ComponentScan(
excludeFilters = {
@ComponentScan.Filter(type = FilterType.ASSIGNABLE_TYPE, value = OAuthCacheServiceImpl.class),
@ComponentScan.Filter(type = FilterType.ASSIGNABLE_TYPE, value = Application.class)
},
basePackages = {
"common", "adapter", "admin"
}
)
I have seen that lot of questions on component scanning are unanswered for long hence I thought to add these details as it may help somebody in the future.
我已经看到很多关于组件扫描的问题长期以来都没有答案，因此我想添加这些细节，因为它可能在未来对某人有所帮助。
HTH...
哈...
回答by Forest10
At first,Thanks very much about the answers of @Yuriy and @ripudam,but what makes me confused is when my excludeFilters contains Configuration.class I have to use @Import to import the Classe which annotated by @Configuration.I found when i use excludeFilters = {@Filter(type = FilterType.ANNOTATION,value{EnableWebMvc.class,Controller.class}),all works well.The ContextLoaderListener doesn`t regist the Controller at first.
首先，非常感谢@Yuriy 和@ripudam 的回答，但让我感到困惑的是，当我的 excludeFilters 包含 Configuration.class 时，我必须使用 @Import 来导入由 @Configuration.I 注释的 Classe。我在使用时发现excludeFilters = {@Filter(type = FilterType.ANNOTATION,value{EnableWebMvc.class,Controller.class})，一切正常。ContextLoaderListener 一开始不注册控制器。
For example
例如
//@Import(value = { SecurityConfig.class, MethodSecurityConfig.class, RedisCacheConfig.class, QuartzConfig.class })
@ComponentScan(basePackages = { "cn.myself" }, excludeFilters = {
@Filter(type = FilterType.ANNOTATION,value={EnableWebMvc.class,Controller.class}) })
public class RootConfig {
}
回答by dorony
I had an issue when using @Configuration, @EnableAutoConfigurationand @ComponentScanwhen trying to exclude specific configuration classes, but it didn't work!
我在尝试排除特定配置类时使用@Configuration、@EnableAutoConfiguration和@ComponentScan时遇到问题，但没有用！
Eventually I solved the problem by using @SpringBootApplication, which according to Spring documentation does the same functionality as the three above in one annotation.
最终我通过使用@SpringBootApplication解决了这个问题，根据 Spring 文档，它在一个注释中完成了与上述三个相同的功能。
Another Tip is to try first without refining your package scan (without the basePackages filter).
另一个提示是先尝试不优化包扫描（没有 basePackages 过滤器）。
@SpringBootApplication(exclude= {Foo.class})
public class MySpringConfiguration {}
