尝试在没有 javamail 的情况下打开 gmail 文件夹

Question

所以我创建了一个不使用 javamail 连接 gmail imaps 的程序。我已经成功登录，但我正在努力寻找一种打开文件夹的方法。我已经查看了所有答案都是 java 邮件，我宁愿不使用它，因为我自己学习这个，但是我似乎无法在 java api 中找到任何东西这将允许我在不使用 javamail 的情况下打开此文件。

这是我的代码：

public class CRole  {
    private BufferedReader socketSIn = null;
    private PrintWriter socketSOut = null;
    private Socket client;
    public CRole(){
         SSLSocketFactory sslsocketfactory = (SSLSocketFactory)   SSLSocketFactory.getDefault();
         try {
                client = (SSLSocket) sslsocketfactory.createSocket("imap.gmail.com", 993);
        System.out.println("Connect to Host");

         }
         catch(IOException e) {
            System.out.println("Unable to listen on ports");
            System.exit(+1);
         }
     try {
            socketSIn = new BufferedReader(new InputStreamReader(client.getInputStream()));
            socketSOut = new PrintWriter(client.getOutputStream(), true);
         } 
    catch(IOException e) {
            System.out.println("Read failed");
            System.exit(+1);
         }
 }
   public void send_connectStringToS(String payload) {
    this.socketSOut.println(payload);
 }
   public String receive_acceptedStringFromS() {
    String line = "";
    try {
            line = this.socketSIn.readLine();
    }
    catch(IOException e) {
            System.out.println("Input/Outpur error.");
           System.exit(+1);
    }
    return line;
}

还有更多代码，但我认为这不是这个问题所必需的。基本上，我必须使用 javamail 还是有其他选择？

还有没有更快的缩进方法，因为当我使用 space bar 时，它总是会避开。

Answer 1

 public class Imaps  {
     private static BufferedReader in = null;
     private static PrintWriter out = null;
     private static Socket client;
     public static void main (String []arg){
    SSLSocketFactory sslsocketfactory = (SSLSocketFactory) SSLSocketFactory.getDefault();
    try {
        client = (SSLSocket) sslsocketfactory.createSocket("imap.gmail.com", 993);
        System.out.println("Connect to Host");

    }
    catch(IOException e) {
        System.out.println("Unable to listen on ports");
        System.exit(+1);
    }
    try {
        in = new BufferedReader(new InputStreamReader(client.getInputStream()));
        out = new PrintWriter(client.getOutputStream(), true);
        out.println("abcd CAPABILITY");
        String response =  (String) in.readLine();
        System.out.println("Server: " + response);

        out.println("efgh STARTTLS"); //tls part does not work but will not cause any problems being there.
        response =  (String) in.readLine();
        System.out.println("Server: " + response);

        String payload3 = "a001 login username @gmail.com password";
        out.println(payload3);

        response =  (String) in.readLine();
        System.out.println("Server: " + response);
        response =  (String) in.readLine();
        System.out.println("Server: " + response);
        response =  (String) in.readLine();
        System.out.println("Server: " + response);
        //should say success if you enter correct password.


        String payload5 = "a002 select inbox";
        //String payload5 = "a002 select inbox";
        out.println(payload5);

        response =   (String) in.readLine();
        System.out.println("Server: " + response);
        response =  (String) in.readLine();
        System.out.println("Server: " + response);
        response =  (String) in.readLine();
        System.out.println("Server: " + response);
        response =   (String) in.readLine();
        System.out.println("Server: " + response);


    }
    catch(IOException e) {
        System.out.println("Read failed");
        System.exit(+1);
    }

答案是，当您发送 a002 select 收件箱时，不需要将文件夹存储在打开的任何位置。在此之后，您可以使用 a004 fetch 1 body[text] 请求您想要的任何消息。请注意，第一个将获取您帐户中的第一封电子邮件，而不是最新的。

尝试在没有 javamail 的情况下打开 gmail 文件夹

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