SpringBoot (11) Summing up (I): application.yml file: Configuration for tomcat (parameters, SLL, error), servlets, thymeleaf cache, JPA, messages and our own parameters

 1. Tomcat definition in application.yml

The Tomcat definition starts with "server".

1.1 Tomcat: Allowing infinite parameters and special characters in the URL

To allow curly braces "{}" 

server.tomcat.relaxed-query-chars: ['{','}']

To allow infinite params

server.tomcat.max-parameter-count: -1 

1.2 Tomcat: SSL configuration

To allow SSL

server.ssl.key-store: classpath:keystores/myServerCert.p12

server.ssl.keyStoreType: pkcs12

server.ssl.key-store-password: myPassword

server.ssl.client-auth: need

server.port: 8443

1.3 Tomcat: error stacktrace

To allow showing error stacktrace

server.error.include-stacktrace: always

Here is the info displayed in the file application.yml referring to Tomcat

#=========================================================

server:
  
  #====================================================================================
  # 1. For accepting "{ }" in parameters and for accepting a long number of parameters
  #====================================================================================
  #@see https://stackoverflow.com/a/58440058/7704658
  #@see https://www.programmersought.com/article/4517808578/
  tomcat:
    relaxed-query-chars: ['{','}']
    max-parameter-count: -1
  
  #====================================================================================
  # 2. SSL-X05 Authorisation
  #====================================================================================
  #--ssl-x05 autorization @ see https://www.baeldung.com/x-509-authentication-in-spring-security
  ssl:
    key-store: classpath:keystores/myServerCert.p12
    keyStoreType: pkcs12
    key-store-password: myPassword
    
    client-auth: need
  
  port: 8443
  
  #====================================================================================
  # 3. Include stracktrace in the error page
  #====================================================================================
  #--error management
  #--@see https://www.logicbig.com/tutorials/spring-framework/spring-boot/custom-thymeleaf-error-page.html
  error:
    include-stacktrace: always      

#=========================================================

2. Servlet multipart files size and Thymeleaf cache

To define multipart file size:

spring.servlet.multipart.max-file-size: 50MB

spring.servlet.multipart.max-request-size: 50MB

Remove cache from Thymeleaf for forcing the refresh of changes

spring.thymeleaf.cache: false

3. JPA definitionTo define multipart file size

For more information see the post about JPA. 

#====================================================================

spring:
  
#--JPA
  datasource:
    #--Connection Pool
    hiraki:   
      connectionTimeout: 20000
      maximumPoolSize: 5
    # PostgreSQL  
    url: jdbc:postgresql://localhost:5432/mywebapp
    driver-class-name: org.postgresql.Driver
    username: myUser
    password: myPassword
  #--Drop and create
  jpa:
    show-sql: true    
    hibernate:
      ddl-auto: update
#      ddl-auto: none
#    generate-ddl: true
    properties:
      hibernate:
        format_sql: true
#      javax:
#        persistence:
#          schema-generation:
#            scripts:
#              action: update
#              create-target: create.sql
#              create-source: metadata          

#====================================================================

4. Messages and i18n files

For instance, the error messages are stored in "src/main/resources/i18n" folder and the files associated with these messages are: 

messages_ca_ES.properties,  messages_es_ES.properties, messages_es_ES.properties and messages.properties

The same reasoning applies to the error collection of files whose prefix is errors and is stored in the same folder

The part of the application.yml file for this is :

#============================================================

spring:
  
  messages:
    basename: i18n/messages, i18n/errors 

#============================================================

5. Other properties for a particular use

For instance, for defining the folder for upload, download, or temporary files these annotations can be made:

#============================================================

folders:
  upload: /home/ximo/uploads
  download: /home/ximo/downloads
  tmp: /home/ximo/tmpkk     

#============================================================