春天自动装配不起作用 [英] spring autowiring not working

问题描述

我在调度程序类中使用带有Quartz的spring 3.0。我已经创建了应用程序上下文

Hi, I am using spring 3.0 with Quartz in a scheduler class. I have created the application context by

private static final ClassPathXmlApplicationContext applicationContext;
static {
    applicationContext = new
        ClassPathXmlApplicationContext("config/applicationContext.xml");
}

问题是没有 @Autowired bean实际上是自动连接的，所以我必须手动设置这样的依赖：

The problem is that none of the @Autowired beans actually get auto-wired, so I have to manually set dependencies like this:

<bean class="com.spr.service.RegistrationServiceImpl" id="registrationService">
    <property name="userService" ref="userService" />
</bean>

我在哪里使用 @Autowired ：

public class RegistrationService {
   @AutoWired private UserService userService;
   // setter for userService;
}

public class UserService{
   // methods
}

我还确保在我的Spring配置中启用注释配置：

I also made sure to enable the annotation configuration in my Spring config:

<context:annotation-config/>
<bean id="registrationSevice" class="RegistrationService"/>
<bean id="userService" class="UserService"/>

为什么 @Autowired 不适合我？

推荐答案

您尚未提供UserService类源代码，因此我无法确定您的问题。看起来UserService类缺少像@Component或@Service这样的'原型'注释。您还必须使用以下配置配置Spring类路径扫描：

You haven't provided the UserService class source code so I can't be sure about your problem. Looks like the UserService class is missing a 'stereotype' annotation like @Component or @Service. You also have to configure the Spring classpath scanning using the following configuration:

    <?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans 
           http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
           http://www.springframework.org/schema/context
           http://www.springframework.org/schema/context/spring-context-3.0.xsd">

     <!-- Add your classes base package here -->          
     <context:component-scan base-package="your.package"/>

   </beans>

您的bean必须包含一个Spring构造型注释，例如：

Your beans must include one of the Spring stereotype annotations like:

package your.package;

@Service
public class UserService{
}

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