springboot

 Failed to bind properties under 'spring.data.mongodb.password' to char[]:

    Reason: java.lang.IllegalStateException: either 'jasypt.encryptor.password', one of ['jasypt.encryptor.private-key-string', 'jasypt.encryptor.private-key-location'] for asymmetric encryption, or one of ['jasypt.encryptor.gcm-secret-key-string', 'jasypt.encryptor.gcm-secret-key-location', 'jasypt.encryptor.gcm-secret-key-password'] for AES/GCM encryption must be provided for Password-based or Asymmetric encryption

this issue resolved only after

manullay giving pass to application.proprties

Action:

for password only to encrypt pass

root@server2:/home/vms.krishit/web/vms.krishit.com/public_html/VMSApplication/VMS/src/main/resources# ls

application.properties  static  templates

root@server2:/home/vms.krishit/web/vms.krishit.com/public_html/VMSApplication/VMS/src/main/resources# cat application.properties 

jasypt.encryptor.password=@#$890@#$890JsonWebToken

spring.data.mongodb.password=ENC(JfKQfpA4gTn2sdQaFFHnAbUz85y56WTPdLKfZZGIlaJlvwgFKQ2XF2MJqhxLtiKS)

spring.data.mongodb.uri=mongodb://mongoAdmin2:${spring.data.mongodb.password}@192.227.112.108:27017/

spring.data.mongodb.database=KrishitDB_VMS_Dev

spring.mail.host=smtp.gmail.com

spring.mail.port=587

spring.mail.username= maxvrnkatesan@gmail.com

spring.mail.password=ENC(ptQ8XQ0BOETsMGG3qU7mLglgA5qFwIm3ZSF4FmRFoOoYM9xyytARBcw/kFsCU/EGHq2Hp7/tgP2nElQvKdOj6Q==)

spring.mail.properties.mail.smtp.auth=true

spring.mail.properties.mail.smtp.starttls.enable=true

spring.mail.properties.mail.smtp.starttls.required=true

spring.datasource.authorizationData =ENC(ZTYoU8na9RFfdZFBuYMbXWgv+w1vDyTQmVUC468bK0Z2x3nVttzn8NZosJtdh2w/culXabI5h6nI+CIbK9edVQ==)

VMS/src/main/resources/static tempaltes application.proerties

mvn jasypt:encrypt-value -Djasypt.encryptor.password='@#$890@#$890JsonWebToken' -Djasypt.plugin.value='h44qEBAXqs2'

the aove cmd will give encrypted password that needs to be replaced in 

VMS/src/main/resources/static tempaltes application.proerties

to decrypt pass

mvn jasypt:decrypt-value -Djasypt.encryptor.password="@#$890@#$890JsonWebToken" -Djasypt.plugin.value="ZTYoU8na9RFfdZFBuYMbXWgv+w1vDyTQmVUC468bK0Z2x3nVttzn8NZosJtdh2w/culXabI5h6nI+CIbK9edVQ=="

spring-boot-app-as-a-service

3.2. Systemd
The systemd service setup is very simple as well. Firstly, we create a script named your-app.service using the following example and put it in /etc/systemd/system directory:

[Unit]
Description=A Spring Boot application
After=syslog.target

[Service]
User=root
ExecStart=/path/to/your-app.jar SuccessExitStatus=143 

[Install] 
WantedBy=multi-user.target

Remember to modify Description, User and ExecStart fields to match your application. You should be able to execute the aforementioned standard service commands at this point as well.

As opposed to the System V init approach described in the previous section, the process ID file and console log file should be configured explicitly using appropriate fields in the service script. An exhaustive list of options may be found here.

 vi /etc/systemd/system/springbootapp.service

[Unit]

Description=A Spring Boot application

After=syslog.target

[Service]

User=root

ExecStart=/usr/bin/java -jar /home/vms.krishit/web/vms.krishit.com/public_html/VMSApplication/VMS/target/VMS-0.0.1-SNAPSHOT.jar SuccessExitStatus=143 

[Install] 

WantedBy=multi-user.target

systemctl start springbootapp.service

systemctl status springbootapp.service

systemctl enable springbootapp.service

Created symlink /etc/systemd/system/multi-user.target.wants/springbootapp.service → /etc/systemd/system/springbootapp.service.

root@server2:/home/vms.krishit/web/vms.krishit.com/public_html/VMSApplication/VMS/target# systemctl status springbootapp.service

Failed to execute command: Exec format error

add shebang to the script

#!/bin/bash

or

Your spring-start.sh is executed by bash you need to explicit your ExecStart in springboot.service file like this : ExecStart=/bin/bash /home/ubuntu/spring-start.sh

Build jar and run spring boot from cmd

In pom.xml add tag <packaging>jar</packaging>.
you can build the maven project using command mvn package or maven install. It will create the .jar file inside target folder.
run command from location where .jar is present - java -jar jarName.jar
Now you can access your system

----------------------

on 17 oct 2022

getting 404 after uploading some files in 

/home/vms.krishit/web/vms.krishit.com/public_html/VMSApplication/VMS/src/main/java/com/example/VMS_App/vmsController

had ro rebuild jar file specfied in springbootapp.service

/usr/bin/java -jar /home/vms.krishit/web/vms.krishit.com/public_html/VMSApplication/VMS/target/VMS-0.0.1-SNAPSHOT.jar SuccessExitStatus=143 

SockJsClient is disconnected

enable spring boot error log

/usr/bin/java -jar /home/vms.krishit/web/vms.krishit.com/public_html/VMSApplication/VMS/target/VMS-0.0.1-SNAPSHOT.jar > /var/log/springboot/error.log 2>&1

 2022-12-08 15:17:35.388 ERROR 2101 --- [io-8080-exec-10] o.s.w.s.s.s.DefaultHandshakeHandler      : "Handshake failed due to invalid Upgrade header: null"

vi vmsapi.krishit.com.apache2.ssl.conf

ProxyPreserveHost On

   ProxyRequests       Off

      ProxyPass / http://localhost:8080/

      ProxyPassReverse / http://localhost:8080/

RewriteEngine       On

    RewriteCond         %{HTTP:Upgrade} websocket [NC]

    RewriteCond         %{HTTP:Connection} upgrade [NC]

    RewriteRule         ^/?(.*) "ws://127.0.0.1:8080/$1" [P,L]

I finally managed to find the error. The order of statements in the apache.conf does matter! The working conf file looks like so:

<VirtualHost *:80>
    ServerAdmin webmaster@localhost
    ServerName  app.myapp.biz

    ProxyPreserveHost   On
    ProxyRequests       Off
    ProxyPass           / http://127.0.0.1:8096/
    ProxyPassReverse    / http://127.0.0.1:8096/

    RewriteEngine       On
    RewriteCond         %{HTTP:Upgrade} websocket [NC]
    RewriteCond         %{HTTP:Connection} upgrade [NC]
    RewriteRule         ^/?(.*) "ws://127.0.0.1:8096/$1" [P,L]

    SetEnv mongo_username           aUser
    SetEnv mongo_password           aPassword
</VirtualHost>