java使用Post方式发送https请求的方法 直接可以用

踩过无数坑之后，成功的方案，主要在设置Content-type application/x-www-form-urlencoded这里，之前没设置，一直数据不通过，不过好了现在OK了

URL reqURL = new URL(url); //创建URL对象

HttpURLConnection httpsConn = (HttpURLConnection)reqURL.openConnection();

httpsConn.setDoOutput(true);

httpsConn.setRequestMethod("POST");

httpsConn.setRequestProperty("Content-type", "application/x-www-form-urlencoded");

httpsConn.setRequestProperty("Accept-Charset", "utf-8");

httpsConn.setRequestProperty("contentType", "utf-8");

httpsConn.setRequestProperty("Content-Length", stringA.length()

+ "");

OutputStreamWriter out = new OutputStreamWriter(httpsConn.getOutputStream(),"utf-8");

out.write(stringA.toString());

out.flush();

out.close();

//取得该连接的输入流，以读取响应内容

InputStreamReader insr = new InputStreamReader(httpsConn.getInputStream(),"utf-8");

//读取服务器的响应内容并显示

String result = "";

int respInt = insr.read();

while(respInt != -1){

result += (char)respInt;

respInt = insr.read();

}

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