uestWrapper.getSession(HttpServletRequestWrapper.java:241) ~[tomcat-embed-core-9.0.13.jar:9.0.13]-优快云博客

本文详细解析了一个关于拦截器配置的常见错误，特别是在排除路径模式时遗漏了关键的‘/’字符，导致程序运行异常。通过正确的代码示例，文章展示了如何避免此类错误，确保拦截器能够正确地处理请求。

uestWrapper.getSession(HttpServletRequestWrapper.java:241) ~[tomcat-embed-core-9.0.13.jar:9.0.13]
	at org.apache.catalina.core.ApplicationHttpRequest.getSession(ApplicationHttpRequest.java:564) ~[tomcat-embed-core-9.0.13.jar:9.0.13]
	at javax.servlet.http.HttpServletRequestWrapper.getSession(HttpServletRequestWrapper.java:241) ~[tomcat-embed-core-9.0.13.jar:9.0.13]
	at org.apache.catalina.core.ApplicationHttpRequest.getSession(ApplicationHttpRequest.java:564) ~[tomcat-embed-core-9.0.13.jar:9.0.13]
	at javax.servlet.http.HttpServletRequestWrapper.getSession(HttpServletRequestWrapper.java:241) ~[tomcat-embed-core-9.0.13.jar:9.0.13]
	at org.apache.catalina.core.ApplicationHttpRequest.getSession(ApplicationHttpRequest.java:564) ~[tomcat-embed-core-9.0.13.jar:9.0.13]
	at javax.servlet.http.HttpServletRequestWrapper.getSession(HttpServletRequestWrapper.java:241) ~[tomcat-embed-core-9.0.13.jar:9.0.13]
	at org.apache.catalina.core.ApplicationHttpRequest.getSession(ApplicationHttpRequest.java:564) ~[tomcat-embed-core-9.0.13.jar:9.0.13]


很长很长很牛逼的错误

原因：
在写拦截器时：少了“/” 如下
.excludePathPatterns("/",“index.html”,"/user/login");

 @Override
public void addInterceptors(InterceptorRegistry registry) {
    registry.addInterceptor(new LoginHandlerInterceptor()).addPathPatterns("/**")
            .excludePathPatterns("/","/index.html","/user/login");
 }