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我的合作伙伴和我一直在研究項目的單獨部分，現在我們想將它們放在一起，但我們遇到了麻煩。他爲jOptionpane編寫了代碼的一部分，但完成的項目將使用jFrame。與jFrame代碼混合使用JOptionpane代碼
代碼的這個特定部分編譯，但它不會寫入任何文件，它在jOptionpane版本中工作。基本上我們想從textfields讀取並將它們寫入.txt文件。我知道，使用基於Unix的操作系統時可能會有細微的差異，但我們在Windows上也沒有成功。我試圖模仿來自這個網站的其他答案，但我沒有任何運氣。任何提示或建議？
public void jTextField1ActionPerformed (java.awt.event.ActionEvent te)
{
String user,usersPass;
FileWriter fw;
FileReader fr;
BufferedWriter writer;
BufferedReader reader;
if (te.getSource() == jTextField1)
{
user = jTextField1.getText();
}
else if (te.getSource() == jTextField2)
{
usersPass = jTextField2.getText();
}
try
{
ArrayList<String> nameList = new ArrayList<String>(100);
ArrayList<String> passwords = new ArrayList<String>(100);
File userNames = new File("Username.txt");
Scanner users = new Scanner(userNames);
File userPass = new File("Passwords.txt");
Scanner pass = new Scanner(userPass);
// FileWriter fw;
// FileReader fr;
fw = new FileWriter("Macintosh Hd/Users/smooth4prez/Desktop/Project/Username.txt");
fr = new FileReader("Macintosh Hd/Users/smooth4prez/Desktop/Project/Passwords.txt");
writer = new BufferedWriter(fw);
reader = new BufferedReader(fr);
}
catch(FileNotFoundException E)
{
E.printStackTrace();
}
catch(IOException e)
{
e.printStackTrace();
}
}
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt)
{
if (evt.getSource() == jButton1)
{
dispose();
new SignIn().setVisible(true);
}
}
這裏是我們試圖返工的JOptionPane版本。
import java.util.ArrayList;
import java.util.Scanner;
import javax.swing.JOptionPane;
import java.io.*;
public class LoginTest implements Serializable
{
Scanner keyboard = new Scanner(System.in);
public static void main(String[] args)throws FileNotFoundException, IOException, NotSerializableException
{
Username();
}
public static void Username()throws FileNotFoundException, IOException
{
File userNames = new File("Username.txt");
Scanner users = new Scanner(userNames);
File userPass = new File("Passwords.txt");
Scanner pass = new Scanner(userPass);
FileWriter fWriteUser = new FileWriter("Username.txt", true);
PrintWriter outUser = new PrintWriter(fWriteUser);
FileWriter fWritePass = new FileWriter("Passwords.txt", true);
PrintWriter outPass = new PrintWriter(fWritePass);
ArrayList<String> nameList = new ArrayList<String>(100);
ArrayList<String> passwords = new ArrayList<String>(100);
int userCount = 0;
while(users.hasNext())
{
String oldName = users.nextLine();
nameList.add(oldName);
userCount = userCount + 1;
}
while(pass.hasNext())
{
String oldPass = pass.nextLine();
passwords.add(oldPass);
}
String strNumUsers = "";
strNumUsers = JOptionPane.showInputDialog("How many users would you like to register?");
int numUsers = Integer.parseInt(strNumUsers);
int newCount = userCount + 1;
for(int j = 0;j < numUsers;j++)
{
String username = JOptionPane.showInputDialog("Enter the username");
for(int i = 0;i < nameList.size();i++)
{
if(username.equals(nameList.get(i)))
{
JOptionPane.showMessageDialog(null, "That username is already taken");
username = JOptionPane.showInputDialog("Enter the username");
i = 0;
}
}
nameList.add(username);
String password = JOptionPane.showInputDialog("Enter password");
passwords.add(password);
File dir = new File("Inbox" + newCount);
dir.mkdir();
File folder = new File("Inbox" + newCount);
File m;
m = new File("Macintosh Hd/Users/smooth4prez/Desktop/Project3/Inbox" + newCount + "/messages.txt");
m.createNewFile();
File n;
n = new File("Macintosh Hd/Users/smooth4prez/Desktop/Project3/Inbox" + newCount + "/outbox.txt");
n.createNewFile();
newCount = newCount + 1;
}
for(int k = userCount;k < nameList.size();k++)
{
outUser.println(nameList.get(k));
outPass.println(passwords.get(k));
}
outUser.close();
outPass.close();
String signInUserName = JOptionPane.showInputDialog("Enter username to sign in");
for(int i = 0;i < nameList.size();i++)
{
if(signInUserName.equals(nameList.get(i)))
{
String signInPassword = JOptionPane.showInputDialog("Please enter your password");
if(signInPassword.equals(passwords.get(i)))
{
String response = "";
JOptionPane.showMessageDialog(null, "Signed in!");
i = nameList.size();
response = JOptionPane.showInputDialog("Would you like to send a message, view messages, or exit?" +
"(Please enter send, view, or exit.)");
/*switch(response.trim())
{
case "Send":
case "send":
Messages.MessageTest(nameList, signInUserName);
break;
case "View":
case "view":
Messages.MessageView(nameList, signInUserName);
break;
case "Exit":
case "exit":
break;
case "":
JOptionPane.showMessageDialog(null, "You didn't enter anything, DIPSHIT!");
break;
default:
JOptionPane.showMessageDialog(null, "That is not a proper response.");
break;
}*/
/*
Save s = new Save();
testObject Rob = new testObject();
s.saveMyObject("myfile", Rob);
//Saving an object with class Save.java
/*
Save s = new Save();
Object myObject = new Object();
String test = "test";
myObject = (Object)test;
s.saveMyObject("myfile", myObject);
*/
//insert program to search for specific user homepage file
//if found, load that homepage, if not found, call method to create homepage
//and save it as a file with the title including the username
}
else
{
JOptionPane.showMessageDialog(null, "Incorrect password");
i = nameList.size();
}
}
else if(!signInUserName.equals(nameList.get(i)))
{
if(i + 1 == nameList.size())
{
JOptionPane.showMessageDialog(null, "That is not a valid username");
}
}
}
}
}
使用括號和縮進絕對沒有意義，請先修復它。 – timss 2013-04-22 01:00:53
對不起。在我讀到你的評論之前，我正在解決這個問題。它確實沒有按照我想要的方式粘貼。 – user2016569 2013-04-22 01:10:18
讓寫它的人去修復它。停止混合I/O API的無理由：P – MadProgrammer 2013-04-22 01:10:47