jsp获取不到tomcat的端口号

[JiangJiYue]

HTTP Status 500 – Internal Server Error
Type Exception Report

Message Unable to compile class for JSP:

Description The server encountered an unexpected condition that prevented it from fulfilling the request.

Exception

org.apache.jasper.JasperException: Unable to compile class for JSP:

An error occurred at line: [6] in the jsp file: [/views/jsp/index.jsp]
System cannot be resolved
3: String domain = request.getScheme() + "://" + request.getServerName() + request.getContextPath();
4: String host = request.getRemoteHost();
5: // int port = request.getServerPort();
6: Integer port = Integer.valueOf(System.getProperty("tomcat.connector.port"));
7:
8:
9: %>

Stacktrace:
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:102)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:212)
org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:552)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:381)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:351)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:335)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:597)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:399)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:386)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:330)
javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
io.github.dunwu.filter.CorsFilter.doFilter(CorsFilter.java:58)
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
Note The full stack trace of the root cause is available in the server logs.