Java项目开启远程调试的方法步骤（tomcat、springboot）

./catalina.sh jpda start 

#  JPDA_TRANSPORT (Optional) JPDA transport used when the "jpda start"
#          command is executed. The default is "dt_socket".
#
#  JPDA_ADDRESS  (Optional) Java runtime options used when the "jpda start"
#          command is executed. The default is localhost:8000.
#
#  JPDA_SUSPEND  (Optional) Java runtime options used when the "jpda start"
#          command is executed. Specifies whether JVM should suspend
#          execution immediately after startup. Default is "n".
#
#  JPDA_OPTS    (Optional) Java runtime options used when the "jpda start"
#          command is executed. If used, JPDA_TRANSPORT, JPDA_ADDRESS,
#          and JPDA_SUSPEND are ignored. Thus, all required jpda
#          options MUST be specified. The default is:
#
#          -agentlib:jdwp=transport=$JPDA_TRANSPORT,
#            address=$JPDA_ADDRESS,server=y,suspend=$JPDA_SUSPEND

JPDA_TRANSPORT=dt_socket 
JPDA_ADDRESS=5005 
JPAD_SUSPEND=n 

JPDA_OPTS='-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=5005'

<project>
 ...
 <build>
  ...
  <plugins>
   ...
   <plugin>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-maven-plugin</artifactId>
    <version>1.1.12.RELEASE</version>
    <configuration>
     <jvmArguments>
      -Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=5005
     </jvmArguments>
    </configuration>
    ...
   </plugin>
   ...
  </plugins>
  ...
 </build>
 ...
</project>

mvn spring-boot:run -Drun.jvmArguments="-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=5005"

java -Xdebug -Xrunjdwp:server=y,transport=dt_socket,address=8000,suspend=n -jar demo.jar

use:~/tomcat/logs # netstat -an|grep 8000
cp    0   0 127.0.0.1:8000     0.0.0.0:*        LISTEN

if [ -z "$JPDA_TRANSPORT" ]; then
  JPDA_TRANSPORT="dt_socket"
 fi
 if [ -z "$JPDA_ADDRESS" ]; then
  JPDA_ADDRESS="0.0.0.0:8000"
 fi
 if [ -z "$JPDA_SUSPEND" ]; then
  JPDA_SUSPEND="n"
 fi

root@VM-198-217-ubuntu:/opt/apache-tomcat-8.5.16/bin# netstat -an | grep 8000
tcp    0   0 10.133.198.217:8000   60.177.99.27:49998   ESTABLISHED

root@VM-198-217-ubuntu:/opt/apache-tomcat-8.5.16/bin# netstat -an | grep 8000
tcp    0   0 0.0.0.0:8000      0.0.0.0:*        LISTEN
tcp    0   0 10.133.198.217:8000   60.177.99.27:49998   TIME_WAIT