从Java Spring MVC调用Node.Js Rest API(POST)

const express = require('express');
const bodyParser = require('body-parser');
const app = express();

app.use(bodyParser.json());

app.post('/api/data', (req, res) => {
    console.log(req.body);
    res.json({ message: 'Data received', data: req.body });
});

const PORT = process.env.PORT || 3000;
app.listen(PORT, () => {
    console.log(`Server is running on port ${PORT}`);
});

import org.springframework.web.client.RestTemplate;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;

public class NodeJsClient {

    private static final String NODE_JS_API_URL = "http://localhost:3000/api/data";

    public void sendDataToNodeJs() {
        RestTemplate restTemplate = new RestTemplate();

        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(MediaType.APPLICATION_JSON);

        // 创建请求体
        String requestBody = "{\"key\":\"value\"}";
        HttpEntity<String> request = new HttpEntity<>(requestBody, headers);

        // 发送POST请求
        ResponseEntity<String> response = restTemplate.postForEntity(NODE_JS_API_URL, request, String.class);

        System.out.println("Response: " + response.getBody());
    }
}

const cors = require('cors');
app.use(cors());