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2019-12-23 11:02:03.924 ERROR 10728 --- [nio-8087-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet] :
Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is java.lang.IndexOutOfBoundsException: Index: 0] with root cause
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不是已经检索出来了吗？为什么不能获取呢？
请大神指教，谢谢
&&&&&&&&&&&&&&&&&&&&&&
更新：
测试查看了 instances 的长度，结果发现是0。。。
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