Spring-Boot-Basics-File-Upload :

* IDE Spring Tool Suite 4, Version: 4.14.0, Build Id: 202203131612.

* Spring Boot :: (v2.4.5)

* SQLyog MYSQL GUI Version: 12.4.3.

* Postman v9.15.2.

* project setup which will be required throughout this series. We will be creating a Maven project with minimum dependencies added to the pom.xml for getting Spring up and running. 

Product System 🔧

* spring-boot-web.

* spring-boot-security.

* spring-boot-test.

* spring-security-test.

* spring-boot-thymeleaf.

* spring-session-core.

* mysql-connector-java.

* spring-boot-maven-plugin.

SQL Table Queries:

	CREATE TABLE `document` (
	  `id` bigint(20) NOT NULL AUTO_INCREMENT,
	  `content` mediumblob,
	  `name` varchar(215) NOT NULL,
	  `size` bigint(20) NOT NULL,
	  `upload_time` datetime DEFAULT NULL,
	  PRIMARY KEY (`id`),
	  UNIQUE KEY `UK_36vs45u76s1n950kwxfa5lyhc` (`name`)
	) ENGINE=InnoDB AUTO_INCREMENT=28 DEFAULT CHARSET=latin1
	
	CREATE TABLE `spring_session` (
	  `PRIMARY_ID` char(36) NOT NULL,
	  `SESSION_ID` char(36) NOT NULL,
	  `CREATION_TIME` bigint(20) NOT NULL,
	  `LAST_ACCESS_TIME` bigint(20) NOT NULL,
	  `MAX_INACTIVE_INTERVAL` int(11) NOT NULL,
	  `EXPIRY_TIME` bigint(20) NOT NULL,
	  `PRINCIPAL_NAME` varchar(100) DEFAULT NULL,
	  PRIMARY KEY (`PRIMARY_ID`),
	  UNIQUE KEY `SPRING_SESSION_IX1` (`SESSION_ID`),
	  KEY `SPRING_SESSION_IX2` (`EXPIRY_TIME`),
	  KEY `SPRING_SESSION_IX3` (`PRINCIPAL_NAME`)
	) ENGINE=InnoDB DEFAULT CHARSET=latin1 ROW_FORMAT=DYNAMIC
	
	CREATE TABLE `spring_session_attributes` (
    `SESSION_PRIMARY_ID` char(36) NOT NULL,
    `ATTRIBUTE_NAME` varchar(200) NOT NULL,
    `ATTRIBUTE_BYTES` blob NOT NULL,
  	 PRIMARY KEY (`SESSION_PRIMARY_ID`,`ATTRIBUTE_NAME`),
 	 CONSTRAINT `SPRING_SESSION_ATTRIBUTES_FK` FOREIGN KEY (`SESSION_PRIMARY_ID`) REFERENCES   		`spring_session` (`PRIMARY_ID`) ON DELETE CASCADE
	) ENGINE=InnoDB DEFAULT CHARSET=latin1 ROW_FORMAT=DYNAMIC