Question

我有一个应用程序，但无法让它在Eclipse或其他地方运行。

这是我的班级：

package fr.aaa;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.stereotype.Component;

@Component
public class Computation {

    public Computation() {
    }

    public static void main(String[] args) {
        ApplicationContext context = new ClassPathXmlApplicationContext("classpath*:applicationContext.xml");
        Computation computer = context.getBean(Computation.class);
    }
}

和我的applicationContext.xml文件：

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:util="http://www.springframework.org/schema/util"
xmlns:security="http://www.springframework.org/schema/security" xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
    http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd      
    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
    http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.1.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd
    http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-3.0.3.xsd">  

<import resource="classpath:spring/persistence.xml"/>

<context:annotation-config />
<context:component-scan base-package="fr.aaa.*, com.bbb.*"/> 

<util:properties id="jdbcProps" location="jdbc.properties" />   

<bean id="propertyConfigurer"
    class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="locations">
        <list>
         <value>classpath:configuration.properties</value>
         <value>classpath:jdbc.properties</value>
        </list>
    </property>
</bean>

我得到了这个例外：

Exception in thread "main" org.springframework.beans.factory.NoSuchBeanDefinitionException: No unique bean of type [fr.aaa.Computation] is defined: expected single bean but found 0:

我在这里错过了什么吗？

Answer 1

更改

fr.aaa.*

到

fr.aaa

对所有包做同样的事情。

base-package属性为

The comma-separated list of packages to scan for annotated components.

没有涉及通配符。您必须使用包的特定名称。 Spring将负责扫描子包。

使用NoSuchBeanDefinitionException自动装配独立应用程序

1 个答案: