30分钟用闲置安卓手机搭建私有短信网关

curl -X POST "https://api.httpsms.com/v1/messages/send" \
  -H "x-api-key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "content": "这是一条来自 httpSMS 的测试短信",
    "from": "+8613800138000",
    "to": "+8613900139000"
  }'

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-webflux</artifactId>
</dependency>

@Service
public class HttpSmsService {

    private static final String API_BASE = "https://api.httpsms.com/v1";
    
    private final WebClient webClient;
    
    @Value("${httpsms.api-key}")
    private String apiKey;
    
    @Value("${httpsms.phone-number}")
    private String phoneNumber; // +8613800138000

    public HttpSmsService(WebClient.Builder builder) {
        this.webClient = builder
            .baseUrl(API_BASE)
            .defaultHeader(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE)
            .defaultHeader("x-api-key", apiKey)
            .build();
    }

    /**
     * 发送短信验证码
     */
    public Mono<Void> sendVerificationCode(String targetPhone, String code) {
        String content = String.format("【你的应用】您的验证码是 %s，请在 5 分钟内完成验证。", code);
        
        Map<String, String> body = Map.of(
            "content", content,
            "from", phoneNumber,
            "to", targetPhone
        );

        return webClient.post()
            .uri("/messages/send")
            .bodyValue(body)
            .retrieve()
            .bodyToMono(JsonNode.class)
            .doOnSuccess(r -> log.info("短信已提交，目标: {}, 状态: {}", targetPhone, r))
            .then();
    }
}

@RestController
@RequestMapping("/api")
public class UserController {

    private final HttpSmsService smsService;
    private final StringRedisTemplate redisTemplate;

    // 省略构造器注入...

    @PostMapping("/register/send-code")
    public ResponseEntity<?> sendCode(@RequestParam String phone) {
        String code = String.valueOf(ThreadLocalRandom.current().nextInt(100000, 999999));
        // 验证码存入 Redis，5 分钟过期
        redisTemplate.opsForValue().set("sms:code:" + phone, code, 5, TimeUnit.MINUTES);

        smsService.sendVerificationCode(phone, code)
            .subscribe(); // 异步发送，不阻塞接口响应

        return ResponseEntity.ok(Map.of("message", "验证码已发送"));
    }
}

httpsms:
  api-key: "YOUR_API_KEY_HERE"
  phone-number: "+8613800138000"

https://your-domain.com/api/sms/callback

@PostMapping("/sms/callback")
public ResponseEntity<?> handleSmsWebhook(@RequestBody Map<String, Object> payload) {
    log.info("收到短信回调: {}", payload);
    
    String from = (String) payload.get("from");
    String content = (String) payload.get("content");
    
    if ("TD".equalsIgnoreCase(content.trim())) {
        log.info("用户 {} 请求退订", from);
        // 执行业务逻辑...
    }
    
    return ResponseEntity.ok(Map.of("status", "received"));
}