使用Java调用阿里云服务发送短信验证码

为了在Java应用中实现短信验证码的发送功能，首先需要引入阿里云SDK的相关依赖。以下是Maven项目中的依赖配置示例：

    com.aliyun
    aliyun-java-sdk-core
    4.0.6


    com.aliyun
    aliyun-java-sdk-dysmsapi
    1.1.0

接下来是具体的Java方法实现，用于发送短信验证码：

public Map sendVerificationCode(String phoneNumber) throws Exception {
    Map resultMap = new HashMap<>();
    // 设置阿里云账号的Access Key ID和Secret
    DefaultProfile profile = DefaultProfile.getProfile("cn-hangzhou", "your-access-key-id", "your-access-key-secret");
    IAcsClient client = new DefaultAcsClient(profile);

    CommonRequest request = new CommonRequest();
    request.setSysMethod(MethodType.POST);
    request.setSysDomain("dysmsapi.aliyuncs.com");
    request.setSysVersion("2017-05-25");
    request.setSysAction("SendSms");
    request.putQueryParameter("RegionId", "cn-hangzhou");
    request.putQueryParameter("PhoneNumbers", phoneNumber);
    request.putQueryParameter("SignName", "Your Sign Name");
    request.putQueryParameter("TemplateCode", "SMS_YourTemplateCode");

    // 生成6位数字的验证码
    String verificatiOnCode= generateRandomCode();
    request.putQueryParameter("TemplateParam", "{\"code\":\"" + verificationCode + "\"}");

    try {
        CommonResponse respOnse= client.getCommonResponse(request);
        String respOnseCode= JSONObject.parseObject(response.getData()).getString("Code");
        if (responseCode != null && responseCode.equals("OK")) {
            resultMap.put("status", "success");
            resultMap.put("message", "验证码已成功发送到手机。");
            resultMap.put("code", verificationCode);
        } else {
            resultMap.put("status", "error");
            resultMap.put("message", "验证码发送失败，请稍后再试。");
        }
    } catch (ServerException | ClientException e) {
        e.printStackTrace();
        resultMap.put("status", "error");
        resultMap.put("message", "服务器错误，请稍后再试。");
    }
    return resultMap;
}

private String generateRandomCode() {
    Random random = new Random();
    StringBuilder codeBuilder = new StringBuilder();
    for (int i = 0; i <6; i++) {
        codeBuilder.append(random.nextInt(10));
    }
    return codeBuilder.toString();
}

以上代码展示了如何使用阿里云短信服务API在Java应用程序中发送短信验证码。请确保替换所有的占位符（如Access Key ID, Access Key Secret, 签名名称和模板代码）为您的实际值。