The following method did not exist: org.springframework.util.CollectionUtils.newHashMap(I)Lja.......
一开始报错java: 程序包org.springframework.jdbc.datasource.lookup不存在是因为jar包没有加载完全。或者jar包不存在，需要重新导包接下来报错：The following method did not exist: org.springframework.util.CollectionUtils.newHashMap(I)Lja......查看可以看出org.springframework.jdbc：5.2.4的两个依赖包spring-core与sp
