springboot调用第三方天气预报接口并以json格式显示给前端

1.添加依赖

<dependency>
  <groupId>com.squareup.okhttp3</groupId>
  <artifactId>okhttp</artifactId>
  <version>4.9.1</version>
</dependency>

2.编写接口调用代码

@RestController
public class WeatherController {

    @GetMapping("/weather")
    public String getWeather() {
        //调用第三方接口获取天气预报数据
        OkHttpClient client = new OkHttpClient();
        Request request = new Request.Builder()
                .url("https://api.openweathermap.org/data/2.5/weather?q=London,uk&appid=your_api_key")
                .build();
        try (Response response = client.newCall(request).execute()) {
            return response.body().string();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }
}

3.在application.properties中配置端口号

server.port=8080

4.启动应用，访问http://localhost:8080/weather即可获取天气预报数据以json格式返回给前端。需要替换your_api_key为你自己的API Key。