Servlet.service() for servlet [dispatcherServlet] in context with path [] th

控制台报错信息

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

e

1.controller层没有加@ResponseBody

2.Service层实现类未添加注解@Autowired

记录一下，也希望对你有帮助。