RESTful web service that schedules messages to be printed
#How to Build the project Step1: Go to the project structure where POM.xml file resides and open the command prompt and run he below command to generate the project dependecies step2: mvn clean install -DskipTests
#How to Run the project
Step1: After compliation and bild of project, we need to run the project using command line tool or IDE (IntelLIJ)
Step2: Using command line window, stay on project structure folder where POM.xm file reside and runt he command below
Step3: mvn spring-boot:run
Step4: Above command will runt he spring boot project and deploy into embedded tomcat server on custom port number 8080
#How to access project on browser #1. SWAGGER - Swagger is an Interface Description Language for describing RESTful APIs expressed using JSON.
Step1: run he url - http://localhost:8088/swagger-ui.html#/ Step2: Where we can see the swagger dashboard consist of List of operation of HTTP methods like GET, POST, DLEETE and list of REST Api operation developed Step3: To ScheduleMessage, access the url "http://localhost:8088/swagger-ui.html#!/message-controller/scheduleMessageUsingPOST", in which it uses HTTP POST method to creat the message body and deliveryDate of message with below payload Expected Value:
{
"deliveryDate": "2021-07-13T16:09:46.295Z",
"message": "string"
}
Step4: Similarly to the above steps, we can do HTTP operations like GET, POST, DELETE, PUT, UPDATE, DELETE ALL and GET ALL by using the Listed Operation using Swagger API
#How to Run the H2 Database using Browser
H2 Database - H2 is a relational database management system written in Java. It can be embedded in Java applications or run in client-server mode using Spring Boot.
Step1: After running the Application sucessfull and UP, Hit the below url in browser to access the H2 database
Step2: http://localhost:8088/h2-ui
Step3: use JDBC url - jdbc:h2:file:~/testdb and hit on button "connect"//to store in file database on disk
Step4: Where it provide SQL query box and list of tables
#How Scheduler works and print the schedule messages on to Console
Scheduler in integrated into Spring boot Application using the cron expression to run for every 1 minute time interval, in which it will fetch the message which are scheduled.
