message Request processing failed; nested exception is java.lang.NullPointerException
數據查詢的時候，在查詢方法調用的時候拋出異常，根本就沒進去方法里賣弄，所以這時候如果確認查詢語句沒錯的話，一般就是調用這個方法的對象沒有@autowire
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Request processing failed; nested exception is java.lang.NullPointerException
Request processing failed; nested exception is java.lang.NullPointerException
error：org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.NullPointerException
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.NullPointerException
SSM框架報HTTP Status 500 - Request processing failed; nested exception is java.lang.NullPointerException錯
Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is java.lang.NullPointerException] with root cause
------>Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is java.lang.NullPointerException] with root cause
錯誤：Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is java.lang.NullPointerException]
Servlet.service() for servlet [gCmsFront] in context with path [/cms] threw exception [Request processing failed; nested exception is java.lang.NullPointerException] with root cause java.lang.NullPoi
Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is java.lang.NullPointerException] with root cause java.lang.Nul