以上是异常信息
下面是方法以及
@Cacheable(cacheNames = "paperin", key = "#p0+#p1+#p2+#p3") public Result getPaperGraph(Integer startYear, Integer endYear, String[] fieldSubs, String[] countries) {}解决方法：
在integer类型数据和String[] 参数中间加一个
String splitFlag="-";这样的字符串。
结果是这样的：
@Cacheable(cacheNames = "paperin", key = "#p0+#p1+#p2+#p3+#p4") public Result getPaperGraph(Integer startYear, Integer endYear, String splitFlag, String[] fieldSubs, String[] countries){
