java 获取@Service 注释类的bean？
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Get bean of @Service annotated class?
提问by Human Being
In my web application, I am not using applicationContext.xml. How can I get the bean of @Serviceannotated class?
在我的 Web 应用程序中，我没有使用applicationContext.xml. 如何获得带@Service注释的类的 bean ？
If I used the applicationContext.xmlin my web application, I have to load the applicationContext.xmlevery time to get the bean of the @Serviceannotated class.
如果我applicationContext.xml在我的 Web 应用程序中使用了，我必须applicationContext.xml每次都加载以获取带@Service注释的类的 bean 。
I used this way
我用这种方式
WebApplicationContext ctx = WebApplicationContextUtils.getRequiredWebApplicationContext(getServletContext);
ServerConnection con = (ServerConnection ) ctx.getBean("con");
My Service class will be as ,
我的服务类将是，
@Service or @Service("con")
public class ServerConnection {
private TServerProtocol tServerProtocol;
private URI uri;
public TServerProtocol getServerConnection(){
System.out.println("host :"+host+"\nport :"+port);
try {
uri = new URI("tcp://" + host + ":" + port);
} catch (URISyntaxException e) {
System.out.println("Exception in xreating URI Path");
}
tServerProtocol = new TServerProtocol(new Endpoint(uri));
return tServerProtocol;
}
}
Is there any other way to get a beanof this class ?
有没有其他方法可以获得这个类的bean？
or
或者
What is the proper way to get a bean of @Serviceannotated class in case of core application and web application in Spring3.x?
@Service在 Spring3.x 中的核心应用程序和 Web 应用程序的情况下，获取带注释类的 bean 的正确方法是什么？
采纳答案by Donal Fellows
If you are using annotation-based configuration, you use @Autowiredto get the bean by its type or @Resourceto get the bean by its name. Use only one of these for any particular property (to keep confusion down).
如果您使用基于注解的配置，您可以使用@Autowiredbean 的类型或名称@Resource来获取 bean。对于任何特定属性仅使用其中之一（以减少混淆）。
@Autowired
private ServerConnection connection;
@Resource(name = "con")
private ServerConnection connection;
There's also @Inject, but I don't like that as it gets less nice as the number of beans goes up. YMMV.
还有@Inject，但我不喜欢那样，因为随着豆子数量的增加它变得不那么好。天啊。
回答by manoj jangam
ApplicationContext context=SpringApplication.run(YourProjectApplication.class, args);
ApplicationContext context=SpringApplication.run(YourProjectApplication.class, args);
this context can be used to get the beans created by annotation @Beanand @Serviceas
此上下文可用于获取通过注释创建的 bean@Bean并@Service作为
context.getBean(className.class);
context.getBean(className.class);
回答by Maksym Demidas
If you working in some bean outside spring then you can use normal Spring annotations:
如果你在 spring 之外的一些 bean 中工作，那么你可以使用普通的 Spring 注释：
@Autowired
private Dependency1 dependency1;
@Autowired
private Dependency2 dependency2;
@Autowired
private Dependency2 dependency2;
then call one time from inside of this class:
然后从这个类内部调用一次：
SpringBeanAutowiringSupport.processInjectionBasedOnCurrentContext(this);
to inject all dependencies. It may be more convinient if you have multiple dependencies.
注入所有依赖项。如果您有多个依赖项，可能会更方便。
回答by cRx
Since you are making use of annotation, I believe you would prefer the use of @Autowired. If you have a class that will call ServerConnection(lets say CallingClassunder package com.foo), then this is how it would look like:
由于您正在使用注释，我相信您更喜欢使用@Autowired。如果你有一个会调用的类ServerConnection（让我们说CallingClass在 package 下com.foo），那么它看起来像这样：
package com.foo;
@Component
public class CallingClass{
@Autowired
private ServerConnection serverConnection
// add your getters and setters
}
Then on your applicationContext.xml just add the following
然后在您的 applicationContext.xml 上添加以下内容
<context:component-scan base-package="com.foo" />
Hope I answered your question.
希望我回答了你的问题。
