SSM整合中的nested exception is java.lang.NullPointerException问题 - 代码天地

SSM整合中的nested exception is java.lang.NullPointerException问题

其他 2018-10-23 14:33:24 阅读次数: 0

今天在整合SSM框架中,内容是从数据库中读取所有商品信息,写完之后一测试,服务器一直报nested exception is java.lang.NullPointerException错误,然后浏览器报500,最后终于找到问题的所在,原来是在springMvc的controller中注入Servcie时没有加上注解@Resource,这样在配置文件中就无法读取到信息所以报错,加上之后问题解决,下面是一些截图及代码展示:

1.报错时的代码及浏览器截图

注意,此时红线标出注入Servcie时没有加上@Resource注解
在这里插入图片描述

2.修改后的代码及截图展示

在这里插入图片描述
此时再访问浏览器,商品列表正常显示

谢谢观看,有什么问题还请指正

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转载自blog.csdn.net/Bnsdmm_lk/article/details/82991289

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