严重: Servlet.service() for servlet [springMVC] in context with path [] threw exception [Request proce

一。问题描述

SSM项目开发中报错：严重: Servlet.service() for servlet [springMVC] in context with path [] threw exception [Request processing failed; nested exception is java.lang.NullPointerException] with root cause

二。错误原因

controller类中声明service时没有加注解**@service**
严重: Servlet.service() for servlet [springMVC] in context with path [] threw exception [Request proce

三。解决方法

加上注解**@service**