Spring autowire byName未按预期工作。

public class SpellChecker {
    public SpellChecker() {
        System.out.println("Inside SpellChecker constructor." );
    }

    public void checkSpelling() {
        System.out.println("Inside checkSpelling." );
    }
}

public class TextEditor {

       private SpellChecker spellChecker1;
       private String name;

       public void setSpellChecker( SpellChecker spellChecker1 ){
          this.spellChecker1 = spellChecker1;
       }
       public SpellChecker getSpellChecker() {
          return spellChecker1;
       }
       public void setName(String name) {
          this.name = name;
       }
       public String getName() {
          return name;
       }

   public void spellCheck() {
       System.out.println(" TextEditor name is " +name);
      spellChecker1.checkSpelling();
   }
}

public class TextEditorMain {

    public static void main(String args[]) throws InterruptedException{

        ApplicationContext context = new 
        ClassPathXmlApplicationContext("Beans.xml"); 
        TextEditor tEditor = (TextEditor) context.getBean("textEditor");
        tEditor.spellCheck();   
    }
}

Spring beans配置：

<bean id = "spellChecker1" class = "com.spring.beans.SpellChecker">
</bean>

<bean id = "textEditor" class = "com.spring.beans.TextEditor" autowire="byName">
   <property name = "name" value = "text1"/>
</bean>

当我给予spellChecker1作为bean id时，它不工作。下面是控制台o/p，

Inside SpellChecker constructor.
 TextEditor name is text1
Exception in thread "main" java.lang.NullPointerException
    at com.spring.beans.TextEditor.spellCheck(TextEditor.java:26)
    at com.spring.main.TextEditorMain.main(TextEditorMain.java:15)

Bean ID和引用名称都是相同的spellChecker1，但仍然不起作用。但奇怪的是，如果我将xml中的Bean ID从spellChecker1更改为spellChecker，则代码可以工作并在下面给出o/p，

Inside SpellChecker constructor.
 TextEditor name is text1
Inside checkSpelling.

那么为什么在使用spellChecker1时没有添加依赖关系呢？