XML中配置如下：
2
392
出错信息如下：
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mocker' defined in class path resource [beans.xml]: Cannot resolve reference to bean '#{singer.song.toUpcase()}' while setting bean property 'song'; nested exception is org.springframework.beans.factory.BeanExpressionException: Expression parsing failed; nested exception is org.springframework.expression.spel.SpelEvaluationException: EL1004E:(pos 12): Method call: Method toUpcase() cannot be found on com.zdz.util.Song type
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:359)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:108)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1477)
Copyright 2014-2025 https://www.php.cn/ All Rights Reserved | php.cn | 湘ICP备2023035733号
收藏
自己解决了问题，一个是因为song中没有toUpcase方法，一个是因为要把SpEL表达式所在的属性从ref改为value
提示写的很清楚song这个类里面没定义upcase这个方法