微信公众号发红包实现

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近期做微信公众号开发，用到了企业向微信用户个人发现金红包的功能，相比之前微信支付功能的实现，多了证书的验证，实现过程总结如下。

  • 数据示例
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<xml>
  <sign><![CDATA[E1EE61A91C8E90F299DE6AE075D60A2D]]></sign>
  <mch_billno><![CDATA[0010010404201411170000046545]]></mch_billno>
  <mch_id><![CDATA[888]]></mch_id>
  <wxappid><![CDATA[wxcbda96de0b165486]]></wxappid>
  <send_name><![CDATA[send_name]]></send_name>
  <re_openid><![CDATA[onqOjjmM1tad-3ROpncN-yUfa6uI]]></re_openid>
  <total_amount><![CDATA[200]]></total_amount>
  <total_num><![CDATA[1]]></total_num>
  <wishing><![CDATA[恭喜发财]]></wishing>
  <client_ip><![CDATA[127.0.0.1]]></client_ip>
  <act_name><![CDATA[新年红包]]></act_name>
  <remark><![CDATA[新年红包]]></remark>
  <nonce_str><![CDATA[50780e0cca98c8c8e814883e5caa672e]]></nonce_str>
</xml>
  • 带证书的请求java代码实现如下：
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KeyStore keyStore = KeyStore.getInstance("PKCS12");
FileInputStream instream = new FileInputStream(new File("/../123XXXXXXXX.p12"));
try
{
  keyStore.load(instream, "123XXXXXXXX".toCharArray());
}
finally
{
  instream.close();
}
// Trust own CA and all self-signed certs
SSLContext sslcontext = SSLContexts.custom().loadKeyMaterial(keyStore, "1236829802".toCharArray()).build();
// Allow TLSv1 protocol only
SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(sslcontext, new String[] { "TLSv1" }, null, SSLConnectionSocketFactory.BROWSER_COMPATIBLE_HOSTNAME_VERIFIER);
CloseableHttpClient httpclient = HttpClients.custom().setSSLSocketFactory(sslsf).build();
String xml = getPackage();
StringEntity stringEntity;
try
{
  HttpPost httppost = new HttpPost("https://api.mch.weixin.qq.com/mmpaymkttransfers/sendredpack");
  stringEntity = new StringEntity(xml, "utf-8");
  httppost.setEntity(stringEntity);
  CloseableHttpResponse response = httpclient.execute(httppost);
}
...