错误信息
在ssm项目启动后，我的idea控制台不停地输出类似如下的日志，导致我的项目无法正常处理请求：
2020-12-07 20:28:13.202 [RMI TCP Connection(2)-127.0.0.1-219] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter' 2020-12-07 20:28:13.203 [RMI TCP Connection(2)-127.0.0.1-467] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating instance of bean 'org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter' 2020-12-07 20:28:13.204 [RMI TCP Connection(2)-127.0.0.1-573] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Eagerly caching bean 'org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter' to allow for resolving potential circular references 2020-12-07 20:28:13.214 [RMI TCP Connection(2)-127.0.0.1-504] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Finished creating instance of bean 'org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter' 2020-12-07 20:28:13.216 [RMI TCP Connection(2)-127.0.0.1-219] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter' 2020-12-07 20:28:13.216 [RMI TCP Connection(2)-127.0.0.1-467] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating instance of bean 'org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter' 2020-12-07 20:28:13.217 [RMI TCP Connection(2)-127.0.0.1-573] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Eagerly caching bean 'org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter' to allow for resolving potential circular references 2020-12-07 20:28:13.227 [RMI TCP Connection(2)-127.0.0.1-504] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Finished creating instance of bean 'org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter' 2020-12-07 20:28:13.228 [RMI TCP Connection(2)-127.0.0.1-219] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.web.servlet.view.InternalResourceViewResolver#0' 2020-12-07 20:28:13.229 [RMI TCP Connection(2)-127.0.0.1-467] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating instance of bean 'org.springframework.web.servlet.view.InternalResourceViewResolver#0' 2020-12-07 20:28:13.260 [RMI TCP Connection(2)-127.0.0.1-573] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Eagerly caching bean 'org.springframework.web.servlet.view.InternalResourceViewResolver#0' to allow for resolving potential circular references 2020-12-07 20:28:13.314 [RMI TCP Connection(2)-127.0.0.1-504] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Finished creating instance of bean 'org.springframework.web.servlet.view.InternalResourceViewResolver#0' 2020-12-07 20:28:13.314 [RMI TCP Connection(2)-127.0.0.1-255] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'messageSource' 2020-12-07 20:28:13.316 [RMI TCP Connection(2)-127.0.0.1-219] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'localeResolver' 2020-12-07 20:28:13.318 [RMI TCP Connection(2)-127.0.0.1-467] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating instance of bean 'localeResolver' 2020-12-07 20:28:13.321 [RMI TCP Connection(2)-127.0.0.1-573] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Eagerly caching bean 'localeResolver' to allow for resolving potential circular references 2020-12-07 20:28:13.369 [RMI TCP Connection(2)-127.0.0.1-504] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Finished creating instance of bean 'localeResolver' 2020-12-07 20:28:13.369 [RMI TCP Connection(2)-127.0.0.1-255] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'org.springframework.web.servlet.handler.MappedInterceptor#1' 2020-12-07 20:28:13.370 [RMI TCP Connection(2)-127.0.0.1-219] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'multipartResolver' 2020-12-07 20:28:13.370 [RMI TCP Connection(2)-127.0.0.1-467] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating instance of bean 'multipartResolver' 2020-12-07 20:28:13.441 [RMI TCP Connection(2)-127.0.0.1-573] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Eagerly caching bean 'multipartResolver' to allow for resolving potential circular references 2020-12-07 20:28:13.546 [RMI TCP Connection(2)-127.0.0.1-504] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Finished creating instance of bean 'multipartResolver' 2020-12-07 20:28:13.550 [RMI TCP Connection(2)-127.0.0.1-219] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter#0' 2020-12-07 20:28:13.551 [RMI TCP Connection(2)-127.0.0.1-467] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating instance of bean 'org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter#0' 2020-12-07 20:28:13.611 [RMI TCP Connection(2)-127.0.0.1-573] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Eagerly caching bean 'org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter#0' to allow for resolving potential circular references 2020-12-07 20:28:13.612 [RMI TCP Connection(2)-127.0.0.1-219] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'mappingJackson2HttpMessageConverter' 2020-12-07 20:28:13.613 [RMI TCP Connection(2)-127.0.0.1-467] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating instance of bean 'mappingJackson2HttpMessageConverter' 2020-12-07 20:28:13.622 [RMI TCP Connection(2)-127.0.0.1-573] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Eagerly caching bean 'mappingJackson2HttpMessageConverter' to allow for resolving potential circular references 2020-12-07 20:28:13.629 [RMI TCP Connection(2)-127.0.0.1-504] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Finished creating instance of bean 'mappingJackson2HttpMessageConverter' 2020-12-07 20:28:13.630 [RMI TCP Connection(2)-127.0.0.1-1755] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Invoking afterPropertiesSet() on bean with name 'org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter#0' 2020-12-07 20:28:13.631 [RMI TCP Connection(2)-127.0.0.1-568] INFO org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter - Looking for @ControllerAdvice: WebApplicationContext for namespace 'SpringMVC-servlet': startup date [Mon Dec 07 20:28:07 CST 2020]; parent: Root WebApplicationContext 2020-12-07 20:28:13.652 [RMI TCP Connection(2)-127.0.0.1-504] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Finished creating instance of bean 'org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter#0' 2020-12-07 20:28:13.653 [RMI TCP Connection(2)-127.0.0.1-255] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'mappingJackson2HttpMessageConverter' 2020-12-07 20:28:13.654 [RMI TCP Connection(2)-127.0.0.1-219] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating shared instance of singleton bean 'org.apache.shiro.spring.security.interceptor.AuthorizationAttributeSourceAdvisor#0' 2020-12-07 20:28:13.655 [RMI TCP Connection(2)-127.0.0.1-467] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Creating instance of bean 'org.apache.shiro.spring.security.interceptor.AuthorizationAttributeSourceAdvisor#0' 2020-12-07 20:28:13.743 [RMI TCP Connection(2)-127.0.0.1-573] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Eagerly caching bean 'org.apache.shiro.spring.security.interceptor.AuthorizationAttributeSourceAdvisor#0' to allow for resolving potential circular references 2020-12-07 20:28:13.792 [RMI TCP Connection(2)-127.0.0.1-255] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'securityManager' 2020-12-07 20:28:13.793 [RMI TCP Connection(2)-127.0.0.1-504] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Finished creating instance of bean 'org.apache.shiro.spring.security.interceptor.AuthorizationAttributeSourceAdvisor#0' 2020-12-07 20:28:13.798 [RMI TCP Connection(2)-127.0.0.1-255] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'org.springframework.context.event.internalEventListenerFactory' 2020-12-07 20:28:14.018 [RMI TCP Connection(2)-127.0.0.1-791] DEBUG org.springframework.web.context.support.XmlWebApplicationContext - Unable to locate LifecycleProcessor with name 'lifecycleProcessor': using default [org.springframework.context.support.DefaultLifecycleProcessor@753d8d98] 2020-12-07 20:28:14.019 [RMI TCP Connection(2)-127.0.0.1-255] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'lifecycleProcessor' 2020-12-07 20:28:14.020 [RMI TCP Connection(2)-127.0.0.1-255] DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory - Returning cached instance of singleton bean 'multipartResolver' 2020-12-07 20:28:14.020 [RMI TCP Connection(2)-127.0.0.1-518] DEBUG org.springframework.web.servlet.DispatcherServlet - Using MultipartReso
我以为是我的代码问题，最开始在博客中看到了可能是mapper映射文件的错误（诸如多了空格或者是结束标签忘了加）， 比如这篇：CSDN上的博客 或 CSDN的博客
我便仔细地比对我的所有mapper映射文件，反复核对了许久并没有出现像以上两个博客遇到的错误，导致我挠头皮挠了很久。
如果你不是以上关于mapper映射文件的问题，那么很可能就是我所遇到的问题。
解决方案
最终我从csdn上找到了原因，就是因为一个断点的原因。。。我不知何时在一个service方法上面添加了断点，而这就是造成这一切的罪魁祸首。
然后我就找断点的位置，百度找了一遍，发现我的debug窗口不见了，无法查看断点，但是百度上都是从debug窗口找到的断点列表（我也重置了窗口布局并没有用），自己摸索了一下，找到了断点列表：
在底部工具栏的 Favorites 窗口内部有一个断点列表，没想到收藏夹居然还有断点，不得不说IDEA挺不错的。
清理完断点后，我的项目终于可以正常运行了，记录一下避免以后重复踩坑吧。