Weather Forecast Service App

This is a Spring Boot application that provides current weather data and weather forecasts by consuming the OpenWeatherMap API.

Features

• Get Current Weather: Fetches current weather data for a given city.
• Get Weather Forecast: Fetches a weather forecast for the next few days for a given city.

Endpoints

The application exposes two main endpoints:

1. /weather?city={cityName}

   • Fetches the current weather for the given city.
   • Example: /weather?city=Thessaloniki
   • Response:

     "Current Weather: City: Thessaloniki, Temperature: 22.5°C, Weather: Clear"

2. /forecast?city={cityName}

   • Fetches the weather forecast for the next few days for the given city.
   • Example: /forecast?city=Thessaloniki
   • Response: (Shows forecast for 2 or more upcoming days)

     "Forecast: City: Thessaloniki, Day 1: 21.5°C, Clear Sky, Day 2: 20.2°C, Clouds"

How It Works

• The application uses RestTemplate to make GET requests to the OpenWeatherMap API.
• JSON responses are parsed using Jackson's ObjectMapper to extract and display relevant weather information.
• The API key is securely stored in application.properties and injected into the service using Spring's @Value annotation.

Setup Instructions

1. Clone the repository:

   git clone https://github.com/your-repo/weather-app.git

2. Open the project in your preferred IDE (e.g., IntelliJ, Eclipse, or VS Code).

3. Add your OpenWeatherMap API Key:

   • Add your API key to the application.properties file in src/main/resources/:

     openweathermap.api.key=YOUR_API_KEY_HERE

4. Build and run the project:

   mvn spring-boot:run

5. Access the application by calling the REST endpoints via Postman or your browser:

   • For current weather: http://localhost:8080/weather?city=Thessaloniki
   • For weather forecast: http://localhost:8080/forecast?city=Thessaloniki

Dependencies

• Spring Boot
• Spring Web
• Jackson (for JSON parsing)
• OpenWeatherMap API