Bean的定义和名称查找

Question

我想experen =换货与spring's name lookup：

<bean id="test" class="com.badmitrii.TestBean" /> 

<bean id="anotherTest" class="com.badmitrii.AnotherTestBean"> 
    <lookup-method bean="test" name="getString"/> 
</bean> 

public class TestBean { 

    private String testBean = "Test bean"; 

    //GET, SET 

    public String getString(){ 
     return "String"; 
    } 
} 

public class AnotherTestBean { 

    private String testBean = "Another test bean"; 

    //GET, SET 

    public String getString(){ 
     return "Overriden string"; 
    } 
} 

但是，当我试图运行我得到了以下异常应用程序：

Exception in thread "main" java.lang.ClassCastException: com.pac.TestBean cannot be cast to java.lang.String 
    at com.pac.AnotherTestBean$$EnhancerBySpringCGLIB$$d6d0f4c6.getString(<generated>) 

就行了：

System.out.println(((AnotherTestBean) context.getBean("anotherTest")).getString()); 

这是怎么回事？

Answer 1

您是说bean“anotherTest”类型为com.badmitrii.AnotherTestBean，并且通过调用bean test的方法getString()创建。

但是这种方法不返回com.badmitrii.AnotherTestBean的实例。它返回一个字符串。因此是例外。