SSM框架写update语句报错：Request processing failed; nested exception is java.lang.NullPointerException
Request processing failed; nested exception is java.lang.NullPointerException 最近忙于写小学期作业，打算用ssm框架做一个简单的web项目 进展还算顺利，刚写到编辑用户信息这一个界面，遇到一个让刚入门小白都头疼的问题——空指针异常。 项目结构大致是这样：一个标准的ssm框架 前台是这样的（不要吐槽我 :）表示本人审美真的
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- 1. Request processing failed; nested exception is java.lang.NullPointerException
- 2. SSM整合项目 报错500 “”Request processing failed; nested exception is java.lang.NullPointerException”
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- 5. ssm报：HTTP Status 500 - Request processing failed; nested exception is java.lang.NullPointerException
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- 9. Request processing failed; nested exception is org.springframework.jdbc.BadSqlGrammarException:
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