java中cmd管道通信关于BufferedWriter指定编码为GBK并调用Bandizip后BufferedReader读不到东西的问题

Question

                        ProcessBuilder builder = new ProcessBuilder("cmd.exe");
                        builder.redirectErrorStream(true);
                        Process process = null;
                        try {
                            process = builder.start();
                        } catch (IOException ex) {
                            throw new RuntimeException(ex);
                        }

                        BufferedReader br = null;
                        BufferedWriter bw = null;
                        try {
                            bw = new BufferedWriter(new OutputStreamWriter(process.getOutputStream(),"GBK"));
                            br = new BufferedReader(new InputStreamReader(process.getInputStream(),"GBK"));
                        } catch (UnsupportedEncodingException ex) {
                            throw new RuntimeException(ex);
                        }
                        try {
                            String s;
                            bw.write("bz.exe x -o:"+out_path_label.getText()+" "+file_path_label.getText()+"\n");
                            bw.flush();
                            while (!(s = br.readLine()).equals("")){
                                System.out.println(s);
                                jta.append(s+"\n");
                            }
                        } catch (IOException ex) {
                            throw new RuntimeException(ex);
                        }            

BufferedWriter和BufferedReader指定编码为GBK
BufferedWriter输出命令“bz.exe x -o:E:\【1】应用软件集\chatgpt\ E:\【1】应用软件集\chatgpt\mima.zip”
BufferedReader此时无法读出数据
控制台信息如下：

"C:\Program Files\Java\jdk-17\bin\java.exe" "-javaagent:F:\java\idea\IntelliJ IDEA Community Edition 2022.3.2\lib\idea_rt.jar=7375:F:\java\idea\IntelliJ IDEA Community Edition 2022.3.2\bin" -Dfile.encoding=UTF-8 -classpath "F:\java\projects\Zip Crack\out\production\Zip Crack" GUI
Microsoft Windows [版本 10.0.19045.2006]
(c) Microsoft Corporation。保留所有权利。
F:\java\projects\Zip Crack>bz.exe x -o:E:\【1】应用软件集\chatgpt\ E:\【1】应用软件集\chatgpt\mima.zip

然而同样的命令正常用cmd执行是这样的：

怎么办？
结尾附上完整源码：

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.io.*;
import java.nio.charset.StandardCharsets;

public class GUI extends JFrame {
    public GUI(){
        try {
            UIManager.setLookAndFeel(javax.swing.plaf.nimbus.NimbusLookAndFeel.class.getName());
        } catch (ClassNotFoundException | InstantiationException | IllegalAccessException |
                 UnsupportedLookAndFeelException e) {
            throw new RuntimeException(e);
        }
        Container co = getContentPane();
        setLayout(new GridLayout(5,1));
        JPanel file_path_panel = new JPanel();
        JLabel file_path_label = new JLabel("压缩包路径");
        JButton file_path_set_button = new JButton("打开...");
        JPanel out_path_panel = new JPanel();
        JPanel two_buttons_panel = new JPanel(new GridLayout(2,1));
        JLabel out_path_label = new JLabel("导出路径");
        JButton out_path_button = new JButton("解压到...");
        JButton out_path_this_button = new JButton("解压到当前文件夹");
        JTextArea jta = new JTextArea();
        jta.setLineWrap(true);
        JButton start_crack = new JButton("开始");
        JPanel crack_mode = new JPanel(new GridLayout(1,7));
        JCheckBox is_number = new JCheckBox("数字");
        JCheckBox is_alphabet = new JCheckBox("小写字母");
        JCheckBox is_alohabet_toUpperCase = new JCheckBox("大写字母");
        JCheckBox is_symbol = new JCheckBox("特殊字符");
        JTextField key_start_number = new JTextField();
        key_start_number.addKeyListener(new ControlTheInput());
        JLabel bolang = new JLabel("~");
        JTextField key_end_number = new JTextField();
        key_end_number.addKeyListener(new ControlTheInput());
        start_crack.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                new Thread(new Runnable() {
                    @Override
                    public void run() {
                        ProcessBuilder builder = new ProcessBuilder("cmd.exe");
                        builder.redirectErrorStream(true);
                        Process process = null;
                        try {
                            process = builder.start();
                        } catch (IOException ex) {
                            throw new RuntimeException(ex);
                        }

                        BufferedReader br = null;
                        BufferedWriter bw = null;
                        try {
                            bw = new BufferedWriter(new OutputStreamWriter(process.getOutputStream(),"GBK"));
                            br = new BufferedReader(new InputStreamReader(process.getInputStream(),"GBK"));
                        } catch (UnsupportedEncodingException ex) {
                            throw new RuntimeException(ex);
                        }
                        try {
                            String s;
                            bw.write("bz.exe x -o:"+out_path_label.getText()+" "+file_path_label.getText()+"\n");
                            bw.flush();
                            while (!(s = br.readLine()).equals("")){
                                System.out.println(s);
                                jta.append(s+"\n");
                            }
                        } catch (IOException ex) {
                            throw new RuntimeException(ex);
                        }
                        KeyDictionary kd = new KeyDictionary();
                        for(int i = Integer.parseInt(key_start_number.getText());i <= Integer.parseInt(key_end_number.getText());i++){
                            kd.init(is_number.isSelected(),is_alphabet.isSelected(),is_alohabet_toUpperCase.isSelected(),is_symbol.isSelected(),i);
                            String end_key = kd.get_end_key();
                            while (true){
                                String key = kd.GetKey()+"\n";
                                try {
                                    bw.write(key);
                                    bw.flush();
                                    String c = null;
                                    if (!read(c,jta,br)){
                                        break;
                                    }
                                } catch (IOException ex) {
                                    throw new RuntimeException(ex);
                                }
                                if (key.equals(end_key)){
                                    break;
                                }
                            }
                        }
                        try {
                            br.close();
                            bw.close();
                            process.destroy();
                        } catch (IOException ex) {
                            throw new RuntimeException(ex);
                        }

                    }
                }).start();
            }
        });

        file_path_set_button.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JFileChooser file_path_chooser = new JFileChooser();
                file_path_chooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
                int i = file_path_chooser.showOpenDialog(getContentPane());
                if(i == JFileChooser.APPROVE_OPTION) {
                    File zip_file = file_path_chooser.getSelectedFile();
                    file_path_label.setText(zip_file.getAbsolutePath());
                }
            }
        });
        out_path_button.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JFileChooser out_path_chooser = new JFileChooser();
                out_path_chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
                int i = out_path_chooser.showOpenDialog(getContentPane());
                if(i == JFileChooser.APPROVE_OPTION) {
                    File out_path = out_path_chooser.getSelectedFile();
                    out_path_label.setText(out_path.getAbsolutePath());
                }
            }
        });
        out_path_this_button.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                String[] split = file_path_label.getText().split("\\\\");
                String new_file_path = file_path_label.getText().replace(split[split.length-1],"");
                out_path_label.setText(new_file_path);
            }
        });
        co.add(jta);
        file_path_panel.add(file_path_label,BorderLayout.CENTER);
        file_path_panel.add(file_path_set_button,BorderLayout.EAST);
        co.add(file_path_panel);
        two_buttons_panel.add(out_path_button);
        two_buttons_panel.add(out_path_this_button);
        out_path_panel.add(out_path_label);
        out_path_panel.add(two_buttons_panel);
        co.add(out_path_panel);
        crack_mode.add(is_number);
        crack_mode.add(is_alphabet);
        crack_mode.add(is_alohabet_toUpperCase);
        crack_mode.add(is_symbol);
        crack_mode.add(key_start_number);
        crack_mode.add(bolang);
        crack_mode.add(key_end_number);
        co.add(crack_mode);
        co.add(start_crack);
        setBounds(600,300,600,600);
        setVisible(true);
        setTitle("Zip Crack");
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }
    private boolean read(String c,JTextArea jta,BufferedReader br) {
        while (true){
            try {
                if ((c = br.readLine()) == null) break;
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
            jta.append(c+"\n");
            System.out.println(c);
            if (c.equals("Invalid password")){
                return true;
            }
        }
        return false;
    }
    class ControlTheInput extends KeyAdapter {

        public void keyTyped(KeyEvent e) {
            String key="0123456789"+(char)8;
            if(key.indexOf(e.getKeyChar())<0){
                e.consume();//如果不是数字则取消
            }
        }
    }
    public static void main(String[] args) {
        new GUI();
    }
}

Answer 1

这个问题的原因是:

1. cmd.exe的默认编码是GBK,而Java程序默认编码是UTF-8。
2. 当你使用GBK编码写入数据到cmd.exe时,cmd.exe无法正确解析这些数据,因为它期望接收GBK编码的数据。
3. 同理,当cmd.exe输出数据时,它使用GBK编码,但Java程序试图使用UTF-8解析这些数据,导致解析失败。
   解决方案有两个:
4. 在启动cmd.exe时,指定其输入/输出编码为UTF-8。你可以这样做:
   java
   ProcessBuilder builder = new ProcessBuilder("cmd.exe", "/K", "chcp 65001");
   // ...
   这会让cmd.exe使用UTF-8编码。
5. 在Java代码中明确指出你要使用GBK编码读取和写入cmd.exe的数据。你应该这样做:
   java
   bw = new BufferedWriter(new OutputStreamWriter(process.getOutputStream(), "GBK"));
   br = new BufferedReader(new InputStreamReader(process.getInputStream(), "GBK"));
   像你的代码中已经做的一样。
   这两种方法任选一种都可以解决你的问题。我个人推荐第一种,使用UTF-8编码会更简单。