java.lang.NullPointerException SQL

【java.lang.NullPointerException SQL】

java.lang.NullPointerException SQL

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Java . lang . nullpointerexception sqljava . lang . nullpointerexception SQL介绍:这是我打印的SQL语句:UPDATE JK _ RD _ REAL _ data set start _ time = sysdate,end _ time = sysdate,collect _ time =?,汽车_