设计原因
最近学期末，进入了专业实训课，借此机会将Swing方面的编程学习了一下，设计了一个简易编译器。为此我查阅了几乎所有监听事件类的具体方法及应用，已经实现了简单的编译及运行功能。
新人第一次写博客，此编译器仍然存在Bug与缺陷，若有不好的地方请多多指教
1.运行的程序仅限输出，控制台输入流管道被阻塞的问题还在解决中。
2.编辑框内可能会抛出BadLocationException异常
3.此编译器暂时仅实现文件的新建，打开，保存，编辑，运行/中断等功能)
设计展示
编辑框界面
编辑框相关类
代码展示
主界面代码
package project;
import java.awt.event.*;
import java.io.*;
import java.util.ArrayList;
import java.util.HashMap;
import java.awt.*;
import javax.swing.BoxLayout;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTabbedPane;
import project.TextPane;
/**
* 仿编译器
* @author 14110
*
*/
public class MainFrame extends JFrame{
/**
*
*/
private static final long serialVersionUID = -4697982052727623928L;
private JFrame f=this;
//定义运行进程
private Process now;
private Runtime run=Runtime.getRuntime();
private BufferedReader br;
private BufferedWriter wr;
//定义组件
static JTabbedPane top; //顶部选项
static JClosableTabbedPane mainText; //编辑框
static ControllArea bottom; //底部
static InFiles files_panel; //左侧文件面板
static ChooseFile chooseFile; //文件选择器
static JPanel left_panel;
static JPanel main_panel;
static TopTools toptools;
//当前界面输入内容
private String content="";
//当前路径
private String path="";
//键盘输入
//private CharBuffer enter=CharBuffer.allocate(64);
private ArrayList<Character>enter=new ArrayList<>();
private String input="";
//缓存
private HashMap<Component, TextPane> textmap = mainText.gettextmap();
static {
//初始化
bottom=new ControllArea();
chooseFile=new ChooseFile();
files_panel=new InFiles();
mainText=new JClosableTabbedPane();
left_panel=new JPanel();
main_panel=new JPanel();
toptools=new TopTools();
top=toptools.getTools();
}
//获取当前文件的路径
public String curPath() {
this.path=textmap.get(mainText.getPane()).getPath();
return this.path;
}
//获取当前界面
public TextPane getNowPane() {
return textmap.get(mainText.getPane());
}
public void init() {
//左侧面板
left_panel.setLayout(new BoxLayout(left_panel,BoxLayout.Y_AXIS));
left_panel.add(files_panel);
//主面板
main_panel.setLayout(new BoxLayout(main_panel,BoxLayout.Y_AXIS));
main_panel.add(mainText);
main_panel.add(bottom);
mainText.setPreferredSize(new Dimension(500,320));
//设置布局管理器
f.setLayout(new BorderLayout());
//添加组件
f.add(top,BorderLayout.NORTH);
f.add(main_panel,BorderLayout.CENTER);
f.add(left_panel,BorderLayout.WEST);
//添加监听器功能
addListeners();
//默认设置
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
final int inset = 50;
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
f.setBounds(inset, inset, screenSize.width - inset*2
, screenSize.height - inset * 2);
f.setVisible(true);
//添加控制器状态
while(this.isVisible()) {
try {
Thread.sleep(1000);
outer();
} catch (InterruptedException e) {
// TODO 自动生成的 catch 块
e.printStackTrace();
}
}
}
//添加监听事件
public void addListeners() {
toptools.b1.addActionListener(new ActionListener() {
//新建
@Override
public void actionPerformed(ActionEvent e) {
mainText.addNewPane();
System.out.println("当前缓存区大小:"+textmap.size());
}
});
toptools.b2.addActionListener(new ActionListener() {
//打开
@Override
public void actionPerformed(ActionEvent e) {
String []infor=chooseFile.openfile(f);
if(infor[0]!="") {
if(files_panel.open(infor[1])) {
mainText.addFilePane(infor);
}else
JOptionPane.showMessageDialog(f, "选择重复");
System.out.println("当前缓存区大小:"+textmap.size());
}else
JOptionPane.showMessageDialog(f, "未选择文件");
}
});
toptools.b3.addActionListener(new ActionListener() {
//保存
@Override
public void actionPerformed(ActionEvent e) {
if(mainText.getPane()!=null) {
if(mainText.getSelectedIndex()!=-1&&
mainText.getSelectedComponent().getName()=="unseted") {
//获取
content=getNowPane().getText();
String []name=chooseFile.newSetfile(f, content);
mainText.setTitleAt(mainText.getSelectedIndex(), name[0]);
mainText.getPane().setName(name[0]);
getNowPane().setName(name[0]);
getNowPane().setPath(name[1]);
files_panel.addChild(name[1]);
}else {
content=getNowPane().getText();
if(chooseFile.setFile(curPath(), content)) {
JOptionPane.showMessageDialog(f, "保存成功");
getNowPane().setRes(false);
}else {
JOptionPane.showMessageDialog(f, "保存失败");
}
}
}
}
});
toptools.b4.addActionListener(new ActionListener() {
//退出
@Override
public void actionPerformed(ActionEvent e) {
System.exit(0);
}
});
toptools.b5.addActionListener(new ActionListener() {
//编译
@Override
public void actionPerformed(ActionEvent e) {
if(getNowPane()==null||getNowPane().getName().equals("unseted")) {
return;
}else {
String result="";
String p=getNowPane().getPath();
try {
now=run.exec("javac "+p);
br=new BufferedReader(new InputStreamReader(now.getErrorStream()));
String read="";
while((read=br.readLine())!=null) {
result+=read+"\r\n";
}
//System.out.print(result);
if(result==""){
JOptionPane.showMessageDialog(f, "编译成功");
getNowPane().setRes(true);
}
else {
JOptionPane.showMessageDialog(f, "编译失败");
bottom.setSelectedIndex(1);
getNowPane().setRes(false);
}
} catch (IOException e1) {
result=e1.getMessage();
}finally{
bottom.setErr(result);
}
}
}
});
toptools.b6.addActionListener(new ActionListener() {
//运行-中断
@Override
public void actionPerformed(ActionEvent e) {
bottom.setSelectedIndex(0);
if(toptools.b6.getText().equals("运行")) {
bottom.getCon().setText("");
if(getNowPane()!=null) {
if(getNowPane().getRes()) {
toptools.b6.setText("中断");
}
else
JOptionPane.showMessageDialog(f, "Error:未编译或编译错误");
}
}else {
now.destroy();
toptools.b6.setText("运行");
}
}
});
toptools.b7.addActionListener(new ActionListener() {
//资源管理
@Override
public void actionPerformed(ActionEvent e) {
if(left_panel.isVisible())
left_panel.setVisible(false);
else
left_panel.setVisible(true);
}
});
toptools.b8.addActionListener(new ActionListener() {
//关于
@Override
public void actionPerformed(ActionEvent e) {
JOptionPane.showMessageDialog(f, "更多功能敬请期待");
}
});
mainText.addMouseListener(new MouseListener() {
@Override
public void mouseClicked(MouseEvent e) {
if(textmap.size()<files_panel.getCount()){
files_panel.delete(mainText.getDel());
}
}
@Override
public void mousePressed(MouseEvent e) {}
@Override
public void mouseReleased(MouseEvent e) {}
@Override
public void mouseEntered(MouseEvent e) {}
@Override
public void mouseExited(MouseEvent e) {}
});
// 添加监听树节点选择事件的监听器
InFiles.tree.addTreeSelectionListener(e -> {
if(textmap.size()>=files_panel.getCount()&&
e.getNewLeadSelectionPath()!=null) {
files_panel.setSelect(e.getNewLeadSelectionPath().toString());
String name="";
for(int i=0;i<textmap.size();i++) {
name=mainText.getTitleAt(i);
if(files_panel.getSelect().indexOf(name)>=0) {
mainText.setSelectedIndex(i);
}
}
}else {
}
});
//输入流监听器
bottom.getCon().addKeyListener(new KeyListener() {
@Override
public void keyTyped(KeyEvent e) {
}
@Override
public void keyPressed(KeyEvent e) {
if(now!=null) {
if(toptools.b6.getText().equals("中断")) {
//获取输入的每行字符串
if(e.getKeyCode()!=10) {
if(enter.size()>0&&e.getKeyCode()==8)
enter.remove(enter.size()-1);
else
enter.add(e.getKeyChar());
}else {
for(int i=0;i<enter.size();i++) {
input+=enter.get(i);
}
enter.clear();
}
}
}
}
@Override
public void keyReleased(KeyEvent e) {
}
});
}
//控制器输出流
public void outer() {
if(toptools.b6.getText().equals("中断")) {
// TODO 自动生成的方法存根
System.out.println("开始运行");
String p=getNowPane().getPath();
try {
now=run.exec("java "+p);
br=new BufferedReader(new InputStreamReader(now.getInputStream()));
wr=new BufferedWriter(new OutputStreamWriter(now.getOutputStream()));
String result=null;
while((result=br.readLine())!=null) {
if(result.length()==0) {
inner();
}
System.out.println(result);
}
if(now.exitValue()==0) {
toptools.b6.setText("运行");
}else {
inner();
}
} catch (IOException e1) {
e1.printStackTrace();
}finally{
try {
if(null!=wr){
wr.close();
wr=null;
}
if(null!=br){
br.close();
br=null;
}
if(null!=now)
now.destroy();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
//控制器输入流
public void inner() {
try {
wr.write(input);
wr.write("\r\n");
wr.flush();
input="";
outer();
} catch (IOException e) {
// TODO 自动生成的 catch 块
e.printStackTrace();
}
}
//-----------------------------------------------------------------
public static void main(String[] args)
{
MainFrame f=new MainFrame();
f.init();
}
}
-
具体代码链接：
链接: https://pan.baidu.com/s/1WLyPNMCpr3LG75No0Gt0QA
提取码: gkdw -
此编译器的编写借鉴多篇博客，在此不一一列出
-
第一次写博客，如有不好，请多多关照
来源：CSDN
作者：BusyJ
链接：https://blog.csdn.net/weixin_44702262/article/details/103696269