调试tomcat应用程序时如何在windows中启动tomcat调试端口

Question

I'm getting Exception while debugging

Failed to connect to remote VM. Connection refused.
Connection refused: connect.

i have tried command in windows system

netstat -n -a -p tcp

but my port 8787 was not there how to start that port.

Answer 1

Basic config is: In catalina.bat under tomcat/bin file modify the below.

1. CATALINA_OPTS="-Xdebug -Xrunjdwp:transport=dt_socket,address=8000,server=y,suspend=n"
2. JPDA_OPTS="-agentlib:jdwp=transport=dt_socket,address=8000,server=y,suspend=n"
3. Run Tomcat from command prompt: catalina.sh jpda start

Then in eclipse create a debug configuration:

• Write any name for the configuration.
• Write the project name.
• Write the connection type as Standard(Socket Attach)
• Host should be localhost
• Port as 8000( or any port number, but that should be the same in other places also).

see: Remote debugging Tomcat with Eclipse

Answer 2

When run as windows service, Tomcat's command line options could be stored in registry at HKLM\\Software\\Wow6432Node\\Apache Software Foundation\\Procrun 2.0\\TomcatServiceName path for 64-bit OS and at HKEY_LOCAL_MACHINE\\Software\\Apache Software Foundation\\Procrun 2.0\\tomcat8 for 32-bit.

See Where does Tomcat7w.exe store Settings on Windows .

Those settings can be viewed and changed via running bin\\tomcatw.exe .