Question

我用eclipse写这个应用程序，它的工作原理。但是，当我将其部署为独立/控制台应用程序时，它无法找到我注入的StartApp bean。这是代码：

主要应用：

@Component
public class StartApp {
    @Autowired
    private Processor proc;

    public StartApp() {
        System.out.println("Starting App!");
    }
    private void say() {
        proc.say();
    }
    public static void main(String[] args) {
        ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");
        StartApp app = ctx.getBean(StartApp.class);
        app.say();
    }
}

服务：

@Service
public class Processor {
    public Processor() {
        System.out.println("Processor initialized!");
    }
    public void say() {
        System.out.println("hello!");
    }
}

和applicationContext.xml：

<?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" 
    xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
    http://www.springframework.org/schema/beans/spring-beans-3.1.xsd 
    http://www.springframework.org/schema/context 
    http://www.springframework.org/schema/context/spring-context-3.1.xsd">

    <context:component-scan base-package="test.spring.desktop"/>
</beans>

我确实把所有Spring库和logger包括slf4j库。对于控制台命令我把这些：

java -cp lib/*:lib/spring-3.1/*:test-spring-desktop.jar test.spring.desktop.StartApp

然后我收到了以下错误消息：

Exception in thread "main" org.springframework.beans.factory.NoSuchBeanDefinitionException: No unique bean of type [test.spring.desktop.StartApp] is defined: expected single bean but found 0:
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean(DefaultListableBeanFactory.java:271)
        at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1101)
        at test.spring.desktop.StartApp.main(StartApp.java:24)

Answer 1

尝试将applicationCntext.xml放入此配置：

<context:annotation-config />

spring 3.1在独立应用程序上注释自动装配

1 个答案: