java版的短信接口封装，免费送给你，自带200条短信

闪速码可以免费试用200条的短信平台，可以用来发送短信验证码或者发送通知短信。平台不仅支持企业，还支持个人（我最看重这点了）。签名审核非常宽松，没有备案或者暂未上线的产品也可以申请签名

今天用闪速码为例，打包封装了java的短信接口，可在官网下载也可以直接使用，

1、test.java

// +----------------------------------------------------------------------------
// | 闪速码java短信sdk
// +----------------------------------------------------------------------------
// | Copyright (c) 2014-2021 https://www.shansuma.com
// +----------------------------------------------------------------------------
// | 闪速码短信平台支持网页在线发送、API集成发送、私有化部署三种形式，可免费试用200条
// +----------------------------------------------------------------------------
// | Author: 橘子俊，开发文档请访问 http://sms.shansuma.com/docs
// +----------------------------------------------------------------------------

package tech.haowei.sms;

public class TestClient {

    public static void main(String[] args) {

        Client client = new Client();
        client.setAppId("hw_10902");     //开发者ID，在【设置】-【开发设置】中获取
        client.setSecretKey("bf80b2a52abb94a4fbeb7c61015bf713");    //开发者密钥，在【设置】-【开发设置】中获取
        client.setVersion("1.0");

        /**
         *   json格式可在 bejson.com 进行校验
         */
        String singnstr = "山顶烤肉";
        Client.Request request = new Client.Request();
        request.setMethod("sms.message.send");
        request.setBizContent("{\"mobile\":[\"18616856295\"],\"type\":0,\"template_id\":\"ST_2020101100000003\",\"sign\":\"" + singnstr +"\",\"send_time\":\"\",\"params\":{\"code\":1234}}");  // 这里是json字符串，send_time 为空时可以为null, params 为空时可以为null,短信签名填写审核后的签名本身，不需要填写签名id
        System.out.println( client.execute(request) );
    }

}

2、clielnt.java

package tech.haowei.sms;

import javax.net.ssl.HttpsURLConnection;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.security.MessageDigest;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;


public class Client {

    private String appId;
    private long timestamp;
    private String secretKey;
    private String version;
    private String signType;

    Client() {
        this.timestamp = System.currentTimeMillis();
        this.version = "1.0";
        this.signType = "md5";
    }

    public void setAppId(String appId) {
        this.appId = appId;
    }

    public void setSignType(String signType) {
        this.signType = signType;
    }

    public void setTimestamp(long timestamp) {
        this.timestamp = timestamp;
    }

    public void setSecretKey(String secretKey) {
        this.secretKey = secretKey;
    }

    public void setVersion(String version) {
        this.version = version;
    }

    public static String md5(String s) {
        char str[] = new char[32];
        char hex[] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
        try {
            MessageDigest md = MessageDigest.getInstance("md5");
            byte[] b = md.digest(s.getBytes());
            int k = 0;
            for (int i = 0; i < b.length; i++) {
                str[k++] = hex[b[i] >>> 4 & 0xf];
                str[k++] = hex[b[i] & 0xf];
            }
        } catch (Exception ex) {
            ex.printStackTrace();
        }
        return new String(str);
    }

    public String createSignature(HashMap data, String secretKey) {
        Object[] array = data.keySet().toArray();
        Arrays.sort(array);
        ArrayList list = new ArrayList<>();
        for (Object key : array) {
            list.add(key + "=" + data.get(key));
        }
        list.add("key=" + secretKey);

        StringBuilder sb = new StringBuilder();
        for (String v : list) {
            sb.append(v);
            sb.append("&");
        }
        sb.deleteCharAt(sb.length() - 1);
        return md5(sb.toString()).toUpperCase();
    }

    public String execute(Request request) {

        StringBuilder sb = new StringBuilder();

        HashMap post = new HashMap<>();
        post.put("app_id", this.appId);
        post.put("timestamp", this.timestamp);
        post.put("sign_type", this.signType);
        post.put("version", this.version);
        post.put("method", request.getMethod());
        post.put("biz_content", request.getBizContent());
        post.put("sign", createSignature(post, this.secretKey));

        ArrayList list = new ArrayList<>();
        for (String key : post.keySet()) {
            list.add(key + "=" + post.get(key));
        }

        StringBuilder data = new StringBuilder();
        for (String v : list) {
            data.append(v);
            data.append("&");
        }
        data.deleteCharAt(data.length() - 1);
        
        //System.out.println(data.toString());

        try {
            URL url = new URL("http://api.shansuma.com/gateway.do");
            HttpURLConnection http = (HttpURLConnection) url.openConnection();
            http.setUseCaches(false);
            http.setConnectTimeout(15 * 1000);
            http.setReadTimeout(60 * 1000);
            http.setRequestMethod("POST");
            http.setRequestProperty("User-Agent", "Mozilla 5.0 Java-SMS-SDK v1.0.0 (Haowei Tech)");
            http.setRequestProperty("Connection", "close");
            http.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
            http.setRequestProperty("Content-Length", "" + data.length());
            http.setDoOutput(true);
            http.setDoInput(true);

            OutputStream ops = http.getOutputStream();
            ops.write(data.toString().getBytes());
            ops.flush();
            ops.close();

            String next;
            InputStreamReader reader = new InputStreamReader(http.getInputStream());
            BufferedReader buffered = new BufferedReader(reader);
            while ((next = buffered.readLine()) != null) {
                sb.append(next);
            }
        } catch (Exception ex) {
            ex.printStackTrace();
        }
        return sb.toString();
    }

    public static class Request {
        private String bizContent;
        private String method;

        public void setBizContent(String bizContent) {
            this.bizContent = bizContent;
        }

        public void setMethod(String method) {
            this.method = method;
        }

        public String getMethod() {
            return method;
        }

        public String getBizContent() {
            return bizContent;
        }
    }

}