this is an example of "One Micro Service"
In realworld, one action of user may call many many microservices, for example, Purchasing things may call "Product service", "Customer Service", "Payment Service" and "BlaBlaBla Service" (depends on how small it have been designed and how many services needed to be called to complete the action) – go to the bottom of this page for more detail and read my slideshare
So, I hope this project will be helpful for people who is getting start to build a micro service by Spring and use MongoDB
and anybody who have tried this project will be able to apply or start their own micro service projects by their own :)
Let's learn together!
Language: Java
Framework: Spring
Tool: STS
Database: MongoDB
Dependency Mangement Tool: Maven
this project is extended from https://github.com/AimePGM/HelloWorldJavaMicroService
download and install: https://www.mongodb.org/
open Terminal (or whatever to use command line)
open the connection of MongoDB for this project
mongod --dbpath ~/your/directory/to/this/project/HelloWorldMicroServiceWithMongoDB/data
then it will build something needed in ~/data folder for MongoDB and MongDB will be ready at port 27017 (default)
NOTE: if you need to change to the other port, use the following command line
mongod --dbpath ~/your/directory/to/this/project/HelloWorldMicroServiceWithMongoDB/data --port [PORT_NUMBER]
example,
mongod --dbpath ~/your/directory/to/this/project/HelloWorldMicroServiceWithMongoDB/data --port 27018
Run it on Spring Tool Suite (STS) is the easiest way to go
download and install STS
Open STS and go to
File -> Import -> General -> Existing Projects into work space -> [Select the directory and there it is :D ]
If the port isn't fixed, it will run on default port 8080
To fix the port, go to "run configuration" and add property server.port -> value = port_number, for example server.port 8085
then open this link in the web browser
http://localhost:8085/newName?name=whatever
then 'whatever' name will be stored in your MongoDB; database name: helloworld, collection: name
want to see the query of all record?
http://localhost:8085/getAllData
there it is :)
I believe you are able to learn what APIs this project have [HINT: Look at HelloWorldRest.java ans you will get it all!]
I planned to write a blog entry to explain about this project in detail but kinda busy this time, my apology
Anyway, for saving your time, try...
| Request name | Type | Parameter(s) | Response | Description |
|---|---|---|---|---|
| hellos | GET | array of Hello Object | query all record from database and return array of Hello object | |
| helloByID/{id} | GET | id=String | Hello Object | query by {name} from database and return a single object Hello |
| helloByName/{name} | GET | name=String | array of Hello Object | query all the data that has {name} and return an array of Hello object |
| hello/new | POST | name=String | added new name: {name} | add more Hello people ;) |
| hello/edit | PUT | id=String, name=String | Changed name from {name from database} to {name} | query a single Hello object by id and change the name from database to {name} |
| hello/{id}/remove | DELETE | id=String | removed: {id} | delete a Hello person by id |
if you try
http://localhost:8080/hellos
it will show
[
{
id: "59e50a8b77c835e20f0aca1c",
name: "Aime"
},
{
id: "59e50a8b77c835e20f0aca1d",
name: "James"
}
]
you may try to add more by
http://localhost:8080/hello/new
with a request body key: name and value: Me (please specify the request to use application/x-www-form-urlencoded)
then it will say
added new name: Me
If you would like to get a single person data, then
http://localhost:8080/helloByID/59e50a8b77c835e20f0aca1c
will return
{
id: "59e50a8b77c835e20f0aca1c",
name: "Aime"
}
So, you can try other APIs provided above and enjoy adding/deleting/modifying the code ;) will be a lot of fun
Micro service and Hello World with JAVA Spring Framework
http://www.slideshare.net/PankamolSrikaew/micro-service-56062328
Oh.. I will do an extension for this project :)
I hope you guys have fun