【已解决阿里云短信】aliyuncs.exceptions.ClientException: SDK.ServerUnreachable : Server unreachable: java.net

1 以下代码亲测有效

<dependency>
  <groupId>com.aliyun</groupId>
  <artifactId>aliyun-java-sdk-core</artifactId>
  <version>4.4.6</version>
</dependency>

public static void main(String[] args) throws ClientException {
	// TODO 一下均为官网代码：改这里
	DefaultProfile profile = DefaultProfile.getProfile("cn-hangzhou", "<accessKeyId>", "<accessSecret>");
	IAcsClient client = new DefaultAcsClient(profile);
	CommonRequest request = new CommonRequest();
	// 请求类型：必填 固定值
	request.setMethod(MethodType.POST);
	// 产品域名：必填 固定值
	request.setDomain("dysmsapi.aliyuncs.com");
	// 版本：必填 固定值
	request.setVersion("2017-05-25");
	// 动作：必填 固定值
	request.setAction("SendSms");
	// 必填 固定值
	request.putQueryParameter("RegionId", "cn-hangzhou");
	// 手机号 TODO 改这里
	request.putQueryParameter("PhoneNumbers", "155********");
	// 签名 TODO 改这里
	request.putQueryParameter("SignName", "****");
	// 模板 TODO 改这里 验证码模板只能发送[a-zA-Z0-9]
	request.putQueryParameter("TemplateCode", "****");
	// 发送的内容 TODO 改这里
	String value = "1234";
	request.putQueryParameter("TemplateParam", "{\"code\": \""+value+"\" }");
	try {
		CommonResponse response = client.getCommonResponse(request);
		System.out.println(response.getData());
	} catch (ServerException e) {
		e.printStackTrace();
	} catch (ClientException e) {
		e.printStackTrace();
	}
}

官网地址
https://api.aliyun.com/new#/?product=Dysmsapi&api=SendSms&params=%7B%22RegionId%22%3A%22cn-hangzhou%22%2C%22PhoneNumbers%22%3A%22%22%2C%22SignName%22%3A%22%22%2C%22TemplateCode%22%3A%22%22%7D&tab=DEMO&lang=JAVA

错误信息具体意思
https://error-center.aliyun.com/status/product/Dysmsapi?spm=a2c1g.8271268.10000.139.6727df25PE6ooX

2 开发配置文件

package com.itl.iap.system.provider.utils;

import com.alibaba.fastjson.JSONObject;
import com.aliyuncs.CommonRequest;
import com.aliyuncs.CommonResponse;
import com.aliyuncs.DefaultAcsClient;
import com.aliyuncs.IAcsClient;
import com.aliyuncs.exceptions.ClientException;
import com.aliyuncs.http.MethodType;
import com.aliyuncs.profile.DefaultProfile;
import com.aliyuncs.profile.IClientProfile;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Configuration;

/**
 * @description 短信工具类
 * @author 管理员
 * @date 2020/12/1 14:11
 * @version 1.0
 * @since JDK 1.8
 */
@Configuration
public class SmsUtils {
    private static Logger logger = LoggerFactory.getLogger(SmsUtils.class);
    /**
     * 产品名称：云通信短信API产品，固定值Dysmsapi
     */
    private static String PRODUCT;
    /**
     * 产品域名：固定值ysmsapi.aliyuncs.com
     */
    private static String DOMAIN;
    /**
     * accessKey
     */
    private static String ACCESS_KEY_ID;
    /**
     * 秘钥
     */
    private static String ACCESS_KEY_SECRET;
    /**
     * 短信签名
     */
    private static String SIGN_NAME;
    /**
     * 短信模板
     */
    private static String VERIFICATION_CODE;
    /**
     * 其他模板
     */
    private static String TEMPLATE_CODE1;

    /**
     * 注入静态变量，方便调用
     */
    @Value("${aliyun.product}")
    public void setProduct(String product){
        PRODUCT = product;
    }

    @Value("${aliyun.domain}")
    public void setDomain(String domain){
        DOMAIN = domain;
    }

    @Value("${aliyun.accessKeyId}")
    public void setAccessKeyId(String accessKeyId){
        ACCESS_KEY_ID = accessKeyId;
    }

    @Value("${aliyun.accessKeySecret}")
    public void setAccessKeySecret(String accessKeySecret){
        ACCESS_KEY_SECRET = accessKeySecret;
    }

    @Value("${aliyun.signName}")
    public void setSignName(String signName){
        SIGN_NAME = signName;
    }

    @Value("${aliyun.verificationCode}")
    public void setVerificationCode(String verificationCode){
        VERIFICATION_CODE = verificationCode;
    }

    @Value("${aliyun.templateCode1}")
    public void setTemplateCode1(String templateCode1){
        TEMPLATE_CODE1 = templateCode1;
    }

    public static String getVerificationCode() {
        return VERIFICATION_CODE;
    }

    public static String getTemplateCode1() {
        return TEMPLATE_CODE1;
    }

    public static Boolean sendSms(String telephone, String value, String templateCode) throws ClientException {
        IClientProfile profile = DefaultProfile.getProfile("cn-hangzhou", ACCESS_KEY_ID, ACCESS_KEY_SECRET);
        IAcsClient client = new DefaultAcsClient(profile);
        CommonRequest request = new CommonRequest();
        // 请求类型：必填 固定值
        request.setMethod(MethodType.POST);
        // 产品域名：必填 固定值
        request.setDomain("dysmsapi.aliyuncs.com");
        // 版本：必填 固定值
        request.setVersion("2017-05-25");
        // 动作：必填 固定值
        request.setAction("SendSms");
        // 必填 固定值
        request.putQueryParameter("RegionId", "cn-hangzhou");
        // 待发送手机号
        request.putQueryParameter("PhoneNumbers", telephone);
        // 短信签名-可在短信控制台中找到
        request.putQueryParameter("SignName", SIGN_NAME);
        // 短信模板-可在短信控制台中找到
        request.putQueryParameter("TemplateCode", templateCode);
        // 模板中的变量替换JSON串,如模板内容为"尊敬的用户,您的验证码为${code}"时,此处的值为
        request.putQueryParameter("TemplateParam", "{\"code\":\"" + value + "\"}");

        CommonResponse response = client.getCommonResponse(request);
        logger.info(JSONObject.toJSONString(response));
        JSONObject jsonObject = JSONObject.parseObject(response.getData());
        // jsonObject = {"RequestId":"22","Message":"OK","BizId":"22^0","Code":"OK"}
        if (jsonObject.getString("Code") != null && "OK".equals(jsonObject.getString("Code"))) {
            logger.info("短信发送成功！");
            return true;
        } else {
            logger.info("短信发送失败！");
        }
        return false;
    }

    /**
     * 以下为测试代码，随机生成验证码
     */
    public static int getNewCode() {
        //每次调用生成一次四位数的随机数
        return (int) (Math.random() * 899999) + 100000;
    }
}

yml配置

aliyun:
  product: "Dysmsapi"
  domain: "ysmsapi.aliyuncs.com"
  accessKeyId: "1"
  accessKeySecret: "1"
  signName: "1"
  verificationCode: "1"
  templateCode1: "1"