无法在服务器端检索密码 [英] Not Able to retrive password at server side

问题描述

大家好，

我正在用具有GUI的客户端用Java编写客户端服务器程序，我想在建立连接后立即向服务器发送用户名，电子邮件ID和密码.我可以发送电子邮件和用户名，但我不知道为什么密码不会发送到用户端.请帮助我解决此问题，请在这里找到我的代码

Hi All,

I am Writing a client server program in java with my client having GUI, i want to send username, email id and password to server as soon as connection is established. I am Able to send email and username but i dont know why password is not going to user side. Please hepl me resolving this please find my code here

CLIENT SIDE

import java.net.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

import java.util.*;
import java.io.*;
public class Clientside extends JFrame implements ActionListener {
	 
	 
	private JLabel user,mail;
	private JTextField usernameinput,emailinput;
	private JPanel username,email,buttonp;
	private JButton connect,terminate;
	private JTextArea result;
	private static Socket socket=null;
	public static void main(String[] args) {
		Clientside Frame = new Clientside();
		Frame.setSize(600, 600);
		Frame.setVisible(true);
		Frame.addWindowListener(new WindowAdapter()
				{
					public void windowClosing(WindowEvent event)
					{
						//Check whether a socket is open...
						if (socket != null)
						{
						try
						{
						socket.close();
						}
						catch (IOException ioEx)
						{
						System.out.println(
						"\nUnable to close link!\n");
						System.exit(1);
						}
						}
						System.exit(0);
						}
				}
				);
		
		
		// TODO Auto-generated method stub

	}
	
	public Clientside()
	{
		username= new JPanel();
		user = new JLabel("username");
		usernameinput= new JTextField("",18);
		username.add(user);
		username.add(usernameinput);
		add(username,BorderLayout.NORTH);
		mail= new JLabel("mail");
		emailinput=new JTextField("",18);
		username.add(mail);
		username.add(emailinput);
		add(username,BorderLayout.NORTH);
	buttonp= new JPanel();
	connect= new JButton("Connect To Server");
	connect.addActionListener(this);
	buttonp.add(connect);
	terminate=new JButton("Terminate the connection");
	terminate.addActionListener(this);
	buttonp.add(terminate);
	add(buttonp,BorderLayout.SOUTH);
	result= new JTextArea(10,10);
	add(result,BorderLayout.CENTER);
	
	
	}
   public void actionPerformed(ActionEvent event)
   {
	   if(event.getSource()==terminate)
	   {
		   System.exit(0);
		   result.setText("");
	   }
	 
		  
		   if(event.getSource()==connect)
			  
		   {
			   String ALPHA_NUM =  "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ!@#$%^&*()_+";
				  StringBuffer sb = new StringBuffer(6);
				  for (int i=0;  i<6;  i++) {  
				         int ndx = (int)(Math.random()*ALPHA_NUM.length());  
				         sb.append(ALPHA_NUM.charAt(ndx));  
				      }  
				  String Password= sb.toString();
			  
			   int port= 2828;
			   String address="127.0.0.1";
			   try{
				
				   InetAddress ipAddress= InetAddress.getByName(address);
				   result.append("Any one with ip"+ ipAddress +"port no. "+ port);
				   
				   
				   socket= new Socket(ipAddress,port);
				  
				  BufferedWriter bw= new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));
			
				  String s=usernameinput.getText();
				bw.write(s);
		
			 bw.flush();
				  String s1=emailinput.getText();
				  bw.write(s1+"\n");
				bw.flush();
				bw.write(Password);
				bw.flush();
				 
			
			
				
				  
				  
				  socket.close();
				   
				 
					   }
			      catch(UnknownHostException uhEx)
			   {
				   result.append("No Host find ");
				   
			   }
			   catch(IOException Ioe)
			   {
				   result.append(Ioe.toString()+"\n");
			   }
			   finally{
				   if(socket!=null)
					   try{
						   
					
					   socket.close();
					   }catch (IOException ioe)
					   {
						   System.out.println("unable to disconnect");
						   System.exit(1);
					   }
				   
					   

			   }
			   
			   
			   }
		   }
}
			   
		   
			   
	   
	   
   

SERVER SIDE


import java.io.*;
import java.net.*;
import java.util.*;
public class Severside {
	
	
	public static void main(String[] args) {
		
		ServerSocket server;
		final int port=2828;
		Socket socket;
		try{
			String j;
			server= new ServerSocket(port);
			do
			{
				socket= server.accept();
			;
				BufferedReader br=new BufferedReader(new InputStreamReader(socket.getInputStream()));
				   String b=br.readLine();
				  
				System.out.println(b);
				
				
				socket.close();
				
				
			}while(true);
			
		}
		catch(IOException IOEX)
		{
			System.out.println(IOEX);
			
		}
	

	}

}

输出-xyz [e-mail]

OUTPUT - xyz [e-mail]

推荐答案

％^& *()_ +"; StringBuffer sb = 新 StringBuffer( 6 ); for ( int i = 0; i< 6; i ++){ int ndx =( int )(Math.random()* ALPHA_NUM.length()); sb.append(ALPHA_NUM.charAt(ndx)); } 字符串密码= sb.toString(); int port = 2828 ; 字符串 address = " ; 尝试 { InetAddress ipAddress = InetAddress.getByName(address); result.append(" + ipAddress + " +端口)； socket = 新 Socket(ipAddress，port); BufferedWriter bw = 新 BufferedWriter(新 OutputStreamWriter(socket.getOutputStream())); 字符串 s = usernameinput.getText(); bw.write(s); bw.flush(); 字符串 s1 = emailinput.getText(); bw.write(s1 + " )； bw.flush(); bw.write(密码); bw.flush(); socket.close(); } 捕获(UnknownHostException uhEx) { result.append(" )； } 捕获(IOException Ioe) { result.append(Ioe.toString()+ " )； } 最终 { 如果(socket！= null) 尝试 { socket.close(); } 捕获(IOException ioe) { System.out.println(" )； System.exit( 1 ); } } } } } 服务器端 导入 java.io. *; 导入 java.net.*; 导入 java.util.*； 公共 类 Severside { 公共 静态 void main(字符串 [] args){ ServerSocket服务器； 最终 int port = 2828; 插座; 尝试 { 字符串 j; server = 新 ServerSocket(端口)； 做 { socket = server.accept(); ; BufferedReader br = new BufferedReader(新 InputStreamReader(socket.getInputStream())); 字符串 b = br.readLine(); System.out.println(b); socket.close(); } while (true); } 捕获(IOException IOEX) { System.out.println(IOEX); } } }

%^&*()_+"; StringBuffer sb = new StringBuffer(6); for (int i=0; i<6; i++) { int ndx = (int)(Math.random()*ALPHA_NUM.length()); sb.append(ALPHA_NUM.charAt(ndx)); } String Password= sb.toString(); int port= 2828; String address="127.0.0.1"; try{ InetAddress ipAddress= InetAddress.getByName(address); result.append("Any one with ip"+ ipAddress +"port no. "+ port); socket= new Socket(ipAddress,port); BufferedWriter bw= new BufferedWriter(new OutputStreamWriter(socket.getOutputStream())); String s=usernameinput.getText(); bw.write(s); bw.flush(); String s1=emailinput.getText(); bw.write(s1+"\n"); bw.flush(); bw.write(Password); bw.flush(); socket.close(); } catch(UnknownHostException uhEx) { result.append("No Host find "); } catch(IOException Ioe) { result.append(Ioe.toString()+"\n"); } finally{ if(socket!=null) try{ socket.close(); }catch (IOException ioe) { System.out.println("unable to disconnect"); System.exit(1); } } } } } SERVER SIDE import java.io.*; import java.net.*; import java.util.*; public class Severside { public static void main(String[] args) { ServerSocket server; final int port=2828; Socket socket; try{ String j; server= new ServerSocket(port); do { socket= server.accept(); ; BufferedReader br=new BufferedReader(new InputStreamReader(socket.getInputStream())); String b=br.readLine(); System.out.println(b); socket.close(); }while(true); } catch(IOException IOEX) { System.out.println(IOEX); } } }

输出-xyz [e-mail]

OUTPUT - xyz [e-mail]

尝试阅读.
您将用户ID和电子邮件写入缓冲区，然后输入换行和密码.
在服务器上，您只读了一行.
写一行或读两行.

简单.

Try reading it.
You write the userid and email to the buffer then a new line followed by the password.
On the server you read a single line.
Either write a single line, or read both lines.

Simples.

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