/**
 * 代码行数统计
 * @author ThinkGem
 * @version 2014-7-22
 */
public class CodeCounter {

    public static void main(String[] args) {
//获取当前类的资源文件路径，即../../target/test-classes/
        String file = CodeCounter.class.getResource("/").getFile();
//        System.out.println(file);
        //path=D:/Source_Code/koudaimini/src/
//设置统计根路径为src
//        String path = file.replace("target/test-classes", "src");
        String path = "D:\\Source_Code\\zbg\\modules\\zbg-api\\src";

        ArrayList<File> al = CodeCounter.getFile(new File(path));
        for (File f : al) {
            if (f.getName().matches(".*\\.java$")){ // 匹配java格式的文件
                CodeCounter.count(f);
                System.out.println(f);
            }
        }
        System.out.println("统计文件：" + CodeCounter.files);
        System.out.println("代码行数：" + CodeCounter.codeLines);
        System.out.println("注释行数：" + CodeCounter.commentLines);
        System.out.println("空白行数：" + CodeCounter.blankLines);
    }
    static long files = 0;
    static long codeLines = 0;
    static long commentLines = 0;
    static long blankLines = 0;
    static ArrayList<File> fileArray = new ArrayList<File>();

    /**
     * 获得目录下的文件和子目录下的文件
     * @param f
     * @return
     */
    public static ArrayList<File> getFile(File f) {
        File[] ff = f.listFiles();
        for (File child : ff) {
            if (child.isDirectory()) {
                CodeCounter.getFile(child);
            } else {
                CodeCounter.fileArray.add(child);
            }
        }
        return CodeCounter.fileArray;

    }

    /**
     * 统计方法
     * @param f
     */
    private static void count(File f) {
        BufferedReader br = null;
        boolean flag = false;
        try {
            br = new BufferedReader(new FileReader(f));
            String line = "";
            while ((line = br.readLine()) != null) {
                line = line.trim(); // 除去注释前的空格
                if (line.matches("^[ ]*$")) { // 匹配空行
                    CodeCounter.blankLines++;
                } else if (line.startsWith("//")) {
                    CodeCounter.commentLines++;
                } else if (line.startsWith("/*") && !line.endsWith("*/")) {
                    CodeCounter.commentLines++;
                    flag = true;
                } else if (line.startsWith("/*") && line.endsWith("*/")) {
                    CodeCounter.commentLines++;
                } else if (flag == true) {
                    CodeCounter.commentLines++;
                    if (line.endsWith("*/")) {
                        flag = false;
                    }
                } else {
                    CodeCounter.codeLines++;
                }
            }
            CodeCounter.files++;
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (br != null) {
                try {
                    br.close();
                    br = null;
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}

D:/。。/koudaimini/src/
统计文件：46
代码行数：2798
注释行数：814
空白行数：652