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: [4] in the jsp file: [/sql.jsp]
SQL_URL cannot be resolved to a variable
1: <%@ page import="java.sql.*" %>
2: 
3: <%
4: String     connectionURL = SQL_URL;
5: Connection connection    = null;
6: Statement  sql           = null;
7: ResultSet  rs            = null;


Stacktrace:
	org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:102)
	org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:214)
	org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:524)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:402)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:372)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:356)
	org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:603)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:396)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:380)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:328)
	jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)

Note The full stack trace of the root cause is available in the server logs.


Apache Tomcat/10.1.20