获取短信验证码（阿里云）进行验证

首先需要去阿里云网站申请短信模板（根据网站的新手引导进行注册验证），注册成功后，需要引入依赖或者jar包，然后进行编写代码

<dependency>
    <groupId>com.aliyungroupId>
    <artifactId>aliyun-java-sdk-coreartifactId>
    <version>4.1.0version>
dependency>

系统产生随机位数的验证码（位数根据传来值length进行产生多少位的验证码）

public String randomNumber(int length){
		if(length<1){
			return "";
		}
		String[] arr={"0", "1", "2", "3", "4", "5", "6", "7", "8", "9"};
	    StringBuffer bufString=new StringBuffer();
		for(int i=0;i<length;i++){
			bufString.append(arr[(int)Math.round(Math.random() * arr.length)]);
	    }
	    return bufString.toString();
	 
	}

发送短信验证码的方法：

private void sendMsg(String phone,String code){
		DefaultProfile profile = DefaultProfile.getProfile("cn-hangzhou", "阿里云用户的AccessKey ID", "阿里云用户的Access Key Secret");
        IAcsClient client = new DefaultAcsClient(profile);

        CommonRequest request = new CommonRequest();
        request.setMethod(MethodType.POST);
        request.setDomain("dysmsapi.aliyuncs.com");
        request.setVersion("2017-05-25");
        request.setAction("SendSms");
        request.putQueryParameter("RegionId", "cn-hangzhou");
        request.putQueryParameter("PhoneNumbers", phone);
        request.putQueryParameter("SignName", "签名名称");
        request.putQueryParameter("TemplateCode", "模版CODE");
        request.putQueryParameter("TemplateParam", "{'code':"+code+"}");
        try {
            CommonResponse response = client.getCommonResponse(request);
            System.out.println(response.getData());
        } catch (ServerException e) {
            e.printStackTrace();
        } catch (ClientException e) {
            e.printStackTrace();
        }
		
	}