使用JDK自带HttpsURLConnection发送HTTPS请求

public static String sendSoapXml(String xml, String requestUrl) throws Exception {

System.out.println("请求报文：" + xml);

StringBuffer sb = new StringBuffer();

String u = requestUrl;

// 请求发送前给系统添加参数，JKS证书
     System.setProperty("javax.net.ssl.trustStore",csj.jks");
     System.setProperty("javax.net.ssl.trustStorePassword", "123456");
     System.setProperty("javax.net.ssl.keyStoreType", "JKS");
     System.setProperty("javax.net.ssl.keyStore", csj.jks");
     System.setProperty("javax.net.ssl.keyStorePassword", "123456");

URL url = new URL(u);

HttpsURLConnection http = (HttpsURLConnection) url.openConnection();

http.setDoOutput(true);

http.setDoInput(true);

http.setRequestMethod("POST");

http.setRequestProperty("Content-Type", "application/soap+xml; charset=UTF-8");

OutputStreamWriter out = new OutputStreamWriter(http.getOutputStream());

out.write(xml);

out.flush();

out.close();

BufferedReader br = new BufferedReader(new InputStreamReader(http.getInputStream()));

String line = "";

for (line = br.readLine(); line != null; line = br.readLine()) {

sb.append(line);

}

br.close();

System.out.println("响应报文：" + sb.toString());

return sb.toString();

}