【文章推荐】------>Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is java.lang.NullPointerException] with root cause

原文：------>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.NullPointerException: null at com.book.app.web.UserController.findPageWith UserController.java: classes :na at sun.reflect.NativeMethodAccessorImpl.invoke Native Method na: . . at sun.reflec ...

2018-11-14 13:32 1 9727 推荐指数：

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Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception

java.lang.NullPointerException: null at com.book.app.web.UserController.findPageWith(UserController.java:50) ~[classes/:na ...

Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception

[dispatcherServlet] in context with path [] threw exception [Reque ...

Servlet.service() for servlet [dispatcherServlet] in context with path [/heima_ssm_web] threw exception [Request processing failed; nested exception

以上报错原因一般都是所在controller中引入service时候，忘记写注解@Resource或者@Autowired注解导致 ...

关于Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception

首先来看报错的错误信息，一直都报空指针异常；仔细检查是因为mapper上没有@Autowired的注解加上这个注解就不会报错了~ ...

错误：Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception

　　白天创建Springboot项目对接Mybatis时，控制台与页面报错如下，出现了空指针，测试了一下数据库连接正确，里面内容也都有，遂进入debug，发现查询的返回值都是空，再将写的sql语句手动 ...

Servlet.service() for servlet [gCmsFront] in context with path [/cms] threw exception [Request processing failed; nested exception

项目是用spring springmvc hebrinate组成的架构，在添加的时候报了这个错误 controller贴在这里求大神指教 ...

报错：严重: Servlet.service() for servlet [springmvc] in context with path [ ] threw exception [Request processing failed; nested exception

解决：service类或dao类需要@Autowired ...

报错更改 Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception

使用input上传文件时候出错，因为在form里提交了图文件，需要进行二进制编码，而我却少了这部分，即enctype="multipart/form-data"。更 ...

原文：------>Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is java.lang.NullPointerException] with root cause

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