请问用java代码如何读取java的注释？

java注释无非就包括："//","/*……*/","/***/"三种，
可以根据这几种情况分步进行！

可以读，标注，还有一些框架也支持，你看看API就是doc啊，人家怎么读出来了，对吧

如何能轻松的写，那javadoc也没啥必要了！

看了下javadoc的源码，没看到一点能用的东西，哎！

无非就是读文件，再分析当前行的信息，贴下之前写的关于统计Java源文件的代码行，但是只是统计代码和注释的行数，没有分析内容了，其实也不用分析，直接输出就好了。
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.*; import javax.swing.*;
import javax.swing.table.DefaultTableModel; public class CountCodes extends JFrame{
    private long codeLines = 0;
    private long commentLines = 0;
    private long blankLines = 0;
    private File fileName;

    private JLabel pathLabel;
    private JTextField pathField;
    private JButton openButton;
    private JPanel panelNorth, panelSouth;     private ArrayList<File> list = new ArrayList<File> ();
    private String[] tableHeader = {"File Name", "Code Lines", "Comment Lines", "Blank Lines"};
    private Vector<String> vectorHeader = new Vector<String> ();
    private Vector<Vector> values = new Vector<Vector> ();
    private JTable table;
    private DefaultTableModel tableModel;
    private JScrollPane scrollPane;

    public CountCodes(){
        super("Count Codes");

        pathLabel = new JLabel("File Path: ");
        pathField = new JTextField(100);
        pathField.setEditable(false);
        openButton = new JButton("Open");

        openButton.addActionListener(
                new ActionListener(){
                    public void actionPerformed(ActionEvent event){
                        openFile();

                        if (fileName == null)
                            return;

                        analysisFileOrDir(fileName);

                        for(File file : list){
                            analyze(file);
                        }
                    }
                });
        panelNorth = new JPanel();

        panelNorth.setLayout(new BorderLayout());
        panelNorth.add(pathLabel, BorderLayout.WEST);
        panelNorth.add(pathField, BorderLayout.CENTER);
        panelNorth.add(openButton, BorderLayout.EAST);

        for (int i=0; i<tableHeader.length; i++)
            vectorHeader.add(tableHeader[i]);

        tableModel = new DefaultTableModel(values, vectorHeader);         table = new JTable(tableModel);

        scrollPane = new JScrollPane(table);

        panelSouth = new JPanel();
        panelSouth.setLayout(new BorderLayout());
        panelSouth.add(scrollPane, BorderLayout.CENTER);

        setLayout(new BorderLayout());
        add(panelNorth, BorderLayout.NORTH);
        add(panelSouth, BorderLayout.CENTER);

        setSize(450, 400);
        setVisible(true);
    }

    public static void main(String args[]){
        CountCodes countCodes = new CountCodes();
        countCodes.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }

    private void openFile(){
        JFileChooser fileChooser = new JFileChooser();
        fileChooser.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);

        int result = fileChooser.showOpenDialog(this);

        if (result == JFileChooser.CANCEL_OPTION)
            return;

        fileName = fileChooser.getSelectedFile();

        if (fileName == null || fileName.getName().equals(""))
            JOptionPane.showMessageDialog(this, "Invalid File Name", "Invalid File Name", JOptionPane.ERROR_MESSAGE);

        pathField.setText(fileName.toString());
    }
    private void zeroVariables(){
        this.codeLines = 0;
        this.commentLines = 0;
        this.blankLines = 0;
    }
    private void analysisFileOrDir(File fileName){
        if(fileName.isFile()){
            list.add(fileName);
            return;
        }
        else{
            File[] fileArray = fileName.listFiles();

            for(File inArray : fileArray){
                if(inArray.isFile() && inArray.getName().matches(".*\\.java$")){
                    list.add(inArray);
                }
                else if(inArray.isDirectory()){
                    analysisFileOrDir(inArray);
                }
            }
        }
    }

    private void analyze(File fileName){
        Vector<String> value = new Vector<String> ();

        String[] strArray = fileName.toString().split("\\\\");

        value.add(strArray[strArray.length-1]);

        BufferedReader br = null;
        boolean comment = false;
        try {
            br = new BufferedReader(new FileReader(fileName));
            String line = "";
            while ((line = br.readLine()) != null) {
                line = line.trim();
                if (line.matches("^[\\s&&[^\\n]]*$")) {
                    blankLines++;
                } else if (line.startsWith("/*") && !line.endsWith("*/")) {
                    commentLines++;
                    comment = true;
                } else if (line.startsWith("/*") && line.endsWith("*/")) {
                    commentLines++;
                } else if (true == comment) {
                    commentLines++;
                    if (line.endsWith("*/")) {
                        comment = false;
                    }
                } else if (line.startsWith("//")) {
                    commentLines++;
                } else {
                    codeLines++;
                }
            }

            value.add(String.valueOf(codeLines));
            value.add(String.valueOf(commentLines));
            value.add(String.valueOf(blankLines));

            values.add(value);

            this.table.revalidate();

            zeroVariables();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (br != null) {
                try {
                    br.close();
                    br = null;
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}

不是有自己带的javadoc命令可以生成文档吗？你的意思是要自己写一个？

对，7楼说的对啊，有java的javadoc命令

利用中饭时间简单的写了下解析"//"与"/*..*/"，剩下的同理
基本能分析出注释，但是遇到代码中如果本来就应用了"//"，"/*"和"*/"应该会出问题，适当修改就可以了
下午困，得睡会
import java.io.*;public class CC
{

public static BufferedReader br=null;
public static File file = new File("d:\\test\\aaa.java");
public static void main(String[] args){
try{
br = new BufferedReader(new FileReader(file));
StringBuffer sb=new StringBuffer();
boolean flag=false;
String temp = br.readLine();
//System.out.println(temp);
while(temp!=null){

if(temp.indexOf("//")!=-1&&!flag){

String x = temp.substring(temp.indexOf("//")+2);
System.out.println("//注释："+x);
temp = br.readLine();
}else if(temp.indexOf("/*")!=-1||temp.indexOf("*/")!=-1||flag){
if(temp.indexOf("/*")!=-1&&temp.indexOf("*/")!=-1){
String x = temp.substring(temp.indexOf("/*")+2,temp.indexOf("*/")-1);
System.out.println(x);
temp = br.readLine();
}else if(temp.indexOf("/*")!=-1){
//System.out.println(temp.substring(temp.indexOf("/*")+2));
sb=sb.append(temp.substring(temp.indexOf("/*")+2)); flag=true;
temp = br.readLine();
}else if(flag&&temp.indexOf("*/")==-1){
sb.append(temp);
temp = br.readLine();
}else{
sb=sb.append(temp.substring(0,temp.indexOf("*/")));
System.out.println("/**/注释："+sb);
flag=false;
sb.delete(0,sb.length()-1);
temp=br.readLine();
}
}else{
temp = br.readLine();
}
}
}catch(Exception e){
e.printStackTrace();
}finally{
try{
br.close();
}catch(Exception e){
e.printStackTrace();
}
}
}
}

调试易

请问用java代码如何读取java的注释？

解决方案 »