package com.java110.common.smartMeter.factory.tqdianbiao;
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import com.java110.utils.cache.MappingCache;
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import com.java110.utils.constant.MappingConstant;
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import org.apache.http.HttpResponse;
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import org.apache.http.NameValuePair;
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import org.apache.http.client.HttpClient;
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import org.apache.http.client.entity.UrlEncodedFormEntity;
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import org.apache.http.client.methods.HttpPost;
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import org.apache.http.impl.client.HttpClientBuilder;
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import org.apache.http.message.BasicNameValuePair;
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import org.apache.http.util.EntityUtils;
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import java.nio.charset.StandardCharsets;
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import java.security.MessageDigest;
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import java.util.*;
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/**
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* 拓强智能电表 工具类
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*/
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public class TdDianBiaoUtil {
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// 请求接口
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public static String requestAsync(String url, String request_content,String notifyUrl){
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// 时间戳
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String timestamp = String.valueOf(new Date().getTime()/1000);
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// 用于签名的内容
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Map<String, String> data = new HashMap<>();
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data.put("timestamp", timestamp);
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data.put("auth_code", MappingCache.getValue(MappingConstant.TDDIANBIAO_DOMAIN,"auth_code"));
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data.put("request_content", request_content);
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data.put("notify_url", notifyUrl);
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// 获取签名
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String sign = getSign(data);
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data.put("sign", sign);
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try {
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return sendHttpRequest(url, data);
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} catch (Exception e) {
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e.printStackTrace();
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}
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return "";
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}
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private static String sendHttpRequest(String url, Map<String, String> bodyMap) throws Exception {
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System.out.println("请求地址：" + url);
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System.out.println("发送参数：" + bodyMap.toString());
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HttpClient client = HttpClientBuilder.create().build();
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HttpPost postRequest = new HttpPost(url);
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List<NameValuePair> nvps = new ArrayList<>();
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for(String key : bodyMap.keySet()) {
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nvps.add(new BasicNameValuePair(key,bodyMap.get(key)));
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}
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postRequest.setEntity(new UrlEncodedFormEntity(nvps,"utf-8"));
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int retry = 3;
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HttpResponse execute = null;
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while(retry-- > 0) {
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try {
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execute = client.execute(postRequest);
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break;
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} catch (Exception e) {
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Thread.sleep(5000);
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}
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}
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if(execute == null) {
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throw new Exception("接口请求失败");
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}
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String resp = EntityUtils.toString(execute.getEntity(), "UTF-8");
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System.out.println("接口返回：" + resp);
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return resp;
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}
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// 生成签名字符串
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private static String getSign(Map<String, String> data)
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{
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// 获取关键字列表
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List<String> keys = new ArrayList<>(data.keySet());
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// 关键字列表排序
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keys.sort(Comparator.naturalOrder());
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StringBuilder sb = new StringBuilder();
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for (String key : keys)
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{
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// 取各个字段内容拼接字符串
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sb.append(data.get(key));
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}
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// 加上双方约定随机字符串
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String txt = sb.toString() + MappingCache.getValue(MappingConstant.TDDIANBIAO_DOMAIN,"nonce");
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// 计算哈希值
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return getMD5(txt);
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}
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// md5加密
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private static String getMD5(String password) {
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MessageDigest md5 = null;
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try {
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md5 = MessageDigest.getInstance("MD5");
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} catch (Exception e) {
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throw new RuntimeException(e);
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}
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byte[] byteArray = password.getBytes(StandardCharsets.UTF_8);
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byte[] md5Bytes = md5.digest(byteArray);
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StringBuilder hexValue = new StringBuilder();
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for (byte md5Byte : md5Bytes) {
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int val = ((int) md5Byte) & 0xff;
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if (val < 16) {
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hexValue.append("0");
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}
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hexValue.append(Integer.toHexString(val));
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}
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return hexValue.toString();
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}
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public static boolean checkSign(String response_content, String timestamp, String sign) {
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// 随机字符串 后台获取
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String nonce = MappingCache.getValue(MappingConstant.TDDIANBIAO_DOMAIN,"nonce");
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String buf = response_content + timestamp + nonce;
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String encode = getMD5(buf);
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return encode.equals(sign);
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}
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}
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