报告在 XML 应用程序上下文中定义的自定义架构 bean 注入的错误类型。
示例:
public class SimpleBean{}
<beans ...>
<bean class="SimpleBean" id="simpleBean"/>
<mvc:annotation-driven
conversion-service="simpleBean" <!-- reports "Bean must be of 'org.springframework.core.convert.ConversionService' type" -->
message-codes-resolver="simpleBean" <!-- 报告 “Bean 必须为 ‘org.springframework.validation.MessageCodesResolver' 类型" -->
validator="simpleBean" <!-- 报告 "Bean 必须为 'org.springframework.validation.Validator' 类型" -->
/>
</beans>