Could not resolve placeholder 'cupszie' in value "cupsize: ${cupszie},age: ${age}"

報錯如下：

Error creating bean with name 'helloController': Injection of autowired dependencies failed; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'cupszie' in value "cupsize: ${cupszie},age: ${age}"

yml中: server:

      port: 8080

    cupSize: B

就OK了。總的意思是cupSize和server是同一級別的。