# poc-spring-boot-dynamic-controller

**Repository Path**: a998151/poc-spring-boot-dynamic-controller

## Basic Information

- **Project Name**: poc-spring-boot-dynamic-controller
- **Description**: Simple POC/draft of how to add a REST controller in Spring Boot at runtime
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2021-12-10
- **Last Updated**: 2022-05-30

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# POC Spring Boot dynamic Controller

This is a simple ***POC/draft*** of `how to add a REST controller in Spring Boot at runtime`

### Get started

Run the Spring Boot application:
```bash
./mvnw spring-boot:run
```
Fetch all users:
```bash
curl http://localhost:8080/users/
```
Simple `user` REST API:

| URL           | HttpMethod           | RequestParam  | PathVariable | RequestBody | ResponseBody | Description     |
| ------------- |:--------------------:|:-------------:|:------------:|:-----------:|:------------:|----------------:|
| /users/       | GET                  |               |              |             |  List(User)  | get all         |
| /users        | GET                  |      id       |              |             |      User    | get by id       |   
| /users        | POST                 |               |              |    User     |              | save            |
| /users        | PUT                  |      id       |              |    User     |              | update          |
| /users        | PATCH                | id, nickName  |              |             |              | update nickName |
| /users/{id}   | DELETE               |               |      id      |             |              | delete          |   

### How it's work ?

1. The Controller generated by [Byte Buddy](https://bytebuddy.net) in [UserDynamicControllerGenerator.java](https://github.com/tsarenkotxt/poc-spring-boot-dynamic-controller/blob/master/src/main/java/com/example/dynamic/controller/demo/UserDynamicControllerGenerator.java)
2. The Controller registered to Spring MVC by [RequestMappingHandlerMapping](https://docs.spring.io/spring/docs/current/javadoc-api/org/springframework/web/servlet/mvc/method/annotation/RequestMappingHandlerMapping.html) in [UserDynamicControllerRegister.java](https://github.com/tsarenkotxt/poc-spring-boot-dynamic-controller/blob/master/src/main/java/com/example/dynamic/controller/demo/UserDynamicControllerRegister.java)