由于阿里云现在的短信签名无法通过申请，所以我这里选择了中国网建SMS短信平台（手机号注册即用，有免费赠送的几条短信测试）
demo代码地址：https://github.com/mer97/springboot-sendmessage
Spring boot 实现发送手机验证码功能：
依赖包：
dependencies {implementation 'org.springframework.boot:spring-boot-starter-json'implementation 'org.springframework.boot:spring-boot-starter-data-redis'implementation 'commons-httpclient:commons-httpclient:3.0.1'implementation 'commons-codec:commons-codec:1.4'testImplementation 'org.springframework.boot:spring-boot-starter-test'
}工具类：
import org.apache.commons.httpclient.Header;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.NameValuePair;
import org.apache.commons.httpclient.methods.PostMethod;/*** @author LEEMER* Create Date: 2019-01-18*/
public class SendMessageUtil {private static final String SMS_Url = "http://sms.webchinese.cn/web_api/";/*** @param Uid SMS用户id ： LEEMER* @param Key 接口秘钥：SMS登录可查（非登录密码）* @param sendPhoneNum 短信发送目标号码* @param desc 短信内容* @return Integer(1：成功码，其他失败，具体参见注释)*/public static Integer send(String Uid,String Key,String sendPhoneNum,String desc){HttpClient client = new HttpClient();PostMethod post = new PostMethod(SMS_Url);post.addRequestHeader("Content-Type","application/x-www-form-urlencoded;charset=gbk");// 在头文件中设置转码//设置参数NameValuePair[] data = {new NameValuePair("Uid", Uid),//登录用户名new NameValuePair("Key", Key),//秘钥new NameValuePair("smsMob", sendPhoneNum),new NameValuePair("smsText", desc)};post.setRequestBody(data);try {client.executeMethod(post);} catch (Exception e) { e.printStackTrace(); }Header[] headers = post.getResponseHeaders();int statusCode = post.getStatusCode();System.out.println("statusCode:" + statusCode);for (Header h : headers) {System.out.println(h.toString());}String result ="";try {result = new String(post.getResponseBodyAsString().getBytes("gbk"));} catch (Exception e) { e.printStackTrace(); }post.releaseConnection();return Integer.parseInt(result);}/*** -1 没有该用户账户-2 接口密钥不正确 [查看密钥]不是账户登陆密码-21 MD5接口密钥加密不正确-3 短信数量不足-11 该用户被禁用-14 短信内容出现非法字符-4 手机号格式不正确-41 手机号码为空-42 短信内容为空-51 短信签名格式不正确接口签名格式为：【签名内容】-6 IP限制大于0 短信发送数量以上作为补充*/public static String getMessage(Integer code){String message;if(code > 0 ) {message = "SMS-f发送成功！短信发送数量：" + code + "条";}else if(code == -1){message = "SMS-没有该用户账户";}else if(code == -2){message = "SMS-接口密钥不正确";}else if(code == -21){message = "SMS-MD5接口密钥加密不正确";}else if(code == -3){message = "SMS-短信数量不足";}else if(code == -11){message = "SMS-该用户被禁用";}else if(code == -14){message = "SMS-短信内容出现非法字符";}else if(code == -4){message = "SMS-手机号格式不正确";}else if(code == -41){message = "SMS-手机号码为空";}else if(code == -42){message = "SMS-短信内容为空";}else if(code == -51){message = "SMS-短信签名格式不正确接口签名格式为：【签名内容】";}else if(code == -6){message = "SMS-IP限制";}else{message = "其他错误";}return message;}}测试：
@RunWith(SpringRunner.class)
@SpringBootTest
public class DemoApplicationTests {private static final Logger LOGGER = LoggerFactory.getLogger(DemoApplicationTests.class);@Autowiredprivate RedisTemplate redisTemplate;/*** 生成随机数* @param num 位数* @return*/public static String createRandomNum(int num){String randomNumStr = "";for(int i = 0; i < num;i ++){int randomNum = (int)(Math.random() * 10);randomNumStr += randomNum;}return randomNumStr;}/*** 中国网建 SMS短信*/@Testpublic void sendMessage(){var timeout = 5;String code = createRandomNum(6);var sendPhoneNum = "137********";Integer resultCode = SendMessageUtil.send("LEEMER","d41d8*******",sendPhoneNum,"尊敬的用户，您好，您的验证码为："+code+"，请于"+timeout+"分钟内正确输入，如非本人操作，请忽略此短信。");System.out.println(SendMessageUtil.getMessage(resultCode));if (resultCode>0){System.out.println("已发送至："+sendPhoneNum+"，验证码："+ code);//手机验证码发送成功。验证码存入Redis缓存redisTemplate.opsForValue().set(sendPhoneNum,code);redisTemplate.expire(sendPhoneNum,5, TimeUnit.MINUTES);}}}
