How to debug Spring Boot application with Eclipse

Question

My Spring Boot webapp is running just fine  and I d like to debug it through Eclipse   So when launching my Remote Java Application debugger  which port should I listen to  And is there a setting on my webapp I have to set to enable debugging

User · Answer

This question is already answered  but i also got same issue to debug Springboot   gradle   jHipster   Mostly Spring boot application can debug by right click and debug  but when you use gradle  having some additional environment parameter setup then it is not possible to debug directly   To resolve this  Eclipse provided one additional features as Remote Java Application  by using this features you can debug your application   Follow below step   run your gradle application with    gradlew bootRun --debug-jvm command  Now go to eclipse --  right click project and Debug configuration --  Remote Java Application   add you host and port as localhost and port as 5005  default for gradle debug  you can change it   Refer for more detail and step

User · Answer

I didn t need to set up remote debugging in order to get this working  I used Maven    Ensure you have the Maven plugin installed into Eclipse  Click Run   Run Configurations   Maven Build   new launch configuration    Base directory  browse to the root of your project Goals  spring-boot  run   Click Apply then click Run    NB  If your IDE has problems finding your project s source code when doing line-by-line debugging  take a look at this SO answer to find out how to manually attach your source code to the debug application   Hope this helps someone

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Please see http   java dzone com articles how-debug-remote-java-applicat to enable the remote debugging   If you are using tomcat to run your application  start tomcat with remote debug parameters or you can start tomcat with JPDA support by using following command   Windows   lt tomcat bin dir gt  startup bat jpda    nix   lt tomcat bin dir gt  startup sh jpda   this will enable remote debugging on port 8000

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How to debug a remote staging or production Spring Boot application  Server-side  Let s assume you have successfully followed Spring Boot s guide on setting up your Spring Boot application as a service  Your application artifact resides in  srv my-app my-app war  accompanied by a configuration file  srv my-app my-app conf     This is file my-app conf   What can you do in this  conf file  The my-app war is prepended with a SysV init d script    yes  take a look into the war file with a text editor   As my-app war is symlinked in the init d directory  that init d script   gets executed  One of its step is actually  source ing this  conf file  Therefore we can do anything in this  conf file that   we can also do in a regular shell script   JAVA OPTS  -agentlib jdwp transport dt socket address localhost 8002 server y suspend n  export SPRING PROFILES ACTIVE staging   When you restart your Spring Boot application with sudo service my-app restart  then in its log file located at  var log my-app log should be a line saying Listening for transport dt socket at address  8002   Client-side  developer machine   Open an SSH port-forwarding tunnel to the server  ssh -L 8002 localhost 8002 myusername staging example com  Keep this SSH session running   In Eclipse  from the toolbar  select Run -  Debug Configurations -  select Remote Java Application -  click the New button -  select as Connection Type Standard  Socket Attach   as Host localhost  and as Port 8002  or whatever you have configured in the steps before   Click Apply and then Debug   The Eclipse debugger should now connect to the remote server  Switching to the Debug perspective should show the connected JVM and its threads  Breakpoints should fire as soon as they are remotely triggered

User · Answer

With eclipse or any other IDE  just right click on your main spring boot application and click  debug as java application

User · Answer

Easier solution   Instead of typing mvn spring-boot run   simply type mvnDebug spring-boot run  You will still need to attach the debugger in Eclipse by making a new Debug Configuration for a  Remote Java Application  on the relevant port

User · Answer

Run below command where pom xml is placed   mvn spring-boot run -Drun jvmArguments  -Xdebug -Xrunjdwp transport dt socket server y suspend y address 5005    And start your remote java application with debugging option on port 5005

User · Answer

Right click on the Spring Boot Applications main class file -  select Debug As options -  Select Java Application   Now you can use breakpoints to debug the application

User · Answer

Why don t you just right click on the main   method and choose  Debug As    Java Application

User · Answer

Right click on the spring boot project - gt  debug as - gt  spring boot App  Put a debugger point and invoke the app from a client like postman

User · Answer

There s section 19 2 in Spring Boot Reference that tells you about starting your application with remote debugging support enabled      java -Xdebug -Xrunjdwp server y transport dt socket address 8000 suspend n      -jar target myproject-0 0 1-SNAPSHOT jar   After you start your application just add that Remote Java Application configuration in Run Debug configurations  select the port address you defined when starting your app  and then you are free to debug

User · Answer

right click on your project and choose  Debug As    Java application or Spring boot App  -capture1 -  If you want that your application pause in somewhere in your app double click on the left you will have like this capture 2   then when you start your app use those arrows to go next  capture 3

User · Answer

The best solution in my opinion is add a plugin in the pom xml  and you don t need to do anything else all the time     lt build gt           lt plugins gt               lt plugin gt                   lt groupId gt org springframework boot lt  groupId gt                   lt artifactId gt spring-boot-maven-plugin lt  artifactId gt                   lt configuration gt                       lt jvmArguments gt                          -Xdebug -Xrunjdwp transport dt socket server y suspend n address 9898                      lt  jvmArguments gt                   lt  configuration gt                   lt executions gt                       lt execution gt                           lt goals gt                               lt goal gt repackage lt  goal gt                           lt  goals gt                       lt  execution gt                   lt  executions gt               lt  plugin gt

[java] How to debug Spring Boot application with Eclipse?

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