我定义了以下bean:
<bean id="myBean" class="com.me.myapp.Widget">
<constructor-arg name="fizz" value="null"/>
<constructor-arg name="buzz" ref="someOtherBean" />
</bean>
当我运行我的应用程序时,Spring 抛出一个 bean 配置异常:
[java] Exception in thread "main" org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'myBean' defined in class path resource [spring-config.xml]:
Unsatisfied dependency expressed through constructor argument with index 0
of type [com.me.myapp.Widget]: Could not convert constructor argument value of
type [java.lang.String] to required type [com.me.myapp.Widget]: Failed to
convert value of type 'java.lang.String' to required type
'com.me.myapp.Widget'; nested exception is java.lang.IllegalStateException:
Cannot convert value of type [java.lang.String] to required
type [com.me.myapp.Widget]: no matching editors or conversion strategy found
Widget
如果我编写以下 Java,我只想创建一个类似的内容:
Widget w = new Widget(null, someOtherBean);
我怎样才能做到这一点?提前致谢!