如何在Java中发送Https Post请求

  • Z时代
  • 2024-01-10
  • 分类：问答

我想从Java代码登录到应用程序。这是我的代码…

String httpsURL = "https://www.abcd.com/auth/login/";
String query = "email="+URLEncoder.encode("abc@xyz.com","UTF-8"); 
query += "&";
query += "password="+URLEncoder.encode("abcd","UTF-8") ;
URL myurl = new URL(httpsURL);
HttpsURLConnection con = (HttpsURLConnection)myurl.openConnection();
con.setRequestMethod("POST");
con.setRequestProperty("Content-length", String.valueOf(query.length())); 
con.setRequestProperty("Content-Type","application/x-www- form-urlencoded"); 
con.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0;Windows98;DigExt)"); 
con.setDoOutput(true); 
con.setDoInput(true);
DataOutputStream output = new DataOutputStream(con.getOutputStream());
output.writeBytes(query);
output.close();
DataInputStream input = new DataInputStream( con.getInputStream() );
for( int c = input.read(); c != -1; c = input.read() ) 
System.out.print( (char)c ); 
input.close();
System.out.println("Resp Code:"+con .getResponseCode()); 
System.out.println("Resp Message:"+ con .getResponseMessage());

但我无法登录，它只返回登录页面。

如果有人可以，请帮助我了解我在做什么错。

回答：

错误 中间有多余的空格）

con.setRequestProperty("Content-Type","application/x-www- form-urlencoded");

正确

 con.setRequestProperty("Content-Type","application/x-www-form-urlencoded");

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