原因:

jdk11及之后的版本不支持@Resource了

 

解决方法:

1. 更换项目所用jdk为jdk1.8

 

2. 导入  javax.annotation-api

<!-- https://mvnrepository.com/artifact/javax.annotation/javax.annotation-api -->
<dependency>
    <groupId>javax.annotation</groupId>
    <artifactId>javax.annotation-api</artifactId>
    <version>1.3.2</version>
</dependency>