没有定义类型的限定bean

Question

我正在尝试用一个非常简单的例子来教我自己的Spring Java注释配置。但是我收到错误NoSuchBeanDefinitionException。

我的Pom文件有：

 <project xmlns="http://maven.apache.org/POM/4.0.0"     
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0    
 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>SpringDemo</groupId>
<artifactId>SpringDemo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<build>
    <sourceDirectory>src</sourceDirectory>
    <plugins>
        <plugin>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.1</version>
            <configuration>
                <source>1.7</source>
                <target>1.7</target>
            </configuration>
        </plugin>
    </plugins>
  </build>
  <dependencies>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>4.0.0.RELEASE</version>
    </dependency>

<!-- JavaConfig need this library -->
<dependency>
    <groupId>cglib</groupId>
    <artifactId>cglib</artifactId>
    <version>2.2.2</version>
</dependency>
</dependencies>
</project>

然后我的配置类有：

 package org.jorkata;


 @Configuration
 public class JavaConfig {

  @Bean
   public Triangle triangle(){
     return new Triangle();
  }

}

我在我的包中定义了一个简单的类：

 package org.jorkata;


 public class Triangle {

  private int val;

    public int getVal() {
       return val;
   }

     public void setVal(int val) {
        this.val = val;
     }

   public void returnVal(){
      System.out.println(getVal());
   }

}

在我的应用课程中，我有：

 package org.jorkata;

  import org.springframework.context.ApplicationContext;
 import org.springframework.context.annotation.*;


public class DrawingApplication {

public static void main(String[] args){

    ApplicationContext ctx = 
              new AnnotationConfigApplicationContext(JavaConfig.class);

    Triangle triangle1 = (Triangle) ctx.getBean(Triangle.class);
    Triangle tr = ctx.getBean(Triangle.class);
    }
 }

我得到错误线程“main”org.springframework.beans.factory.NoSuchBeanDefinitionException：没有定义[org.jorkata.Triangle]类型的限定bean