相关疑难解决方法(0)

我正在添加到我们的大型Java应用程序的模块必须与另一家公司的SSL安全网站进行交谈.问题是该站点使用自签名证书.我有一份证书副本,以验证我没有遇到中间人攻击,我需要将此证书合并到我们的代码中,以便与服务器的连接成功.

这是基本代码:

void sendRequest(String dataPacket) {
  String urlStr = "https://host.example.com/";
  URL url = new URL(urlStr);
  HttpURLConnection conn = (HttpURLConnection)url.openConnection();
  conn.setMethod("POST");
  conn.setRequestProperty("Content-Length", data.length());
  conn.setDoOutput(true);
  OutputStreamWriter o = new OutputStreamWriter(conn.getOutputStream());
  o.write(data);
  o.flush();
}

在没有为自签名证书进行任何额外处理的情况下,这会在conn.getOutputStream()处死,但有以下异常:

Exception in thread "main" javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
....
Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
....
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path …