统计代码行数

public class ReadFile {

 

      /**

      * @param args

      * @throws IOException

      */

      public static void main(String[] args) throws IOException {

           Long globalNum = 0L; // 总行数

           List<Long> lineNums = new ArrayList<Long>();

           List<String> exceptFileNames = new ArrayList<String>();

           exceptFileNames.add( "project2" );//不统计目录

           exceptFileNames.add( "test");//不统计目录

          String path = "D:\\source\\project" ;//项目目录

           File file = new File(path);

            traversalFile(file, lineNums, exceptFileNames);

            for (Long num : lineNums) {

                globalNum = globalNum + num;

           }

           System. out.println(globalNum); // 310375

     }

 

      /**

      * 得到目录的叶子java文件,并统计文件里有多少行,将行数放到list中

      *

      * @param file

      * @throws IOException

      */

      public static void traversalFile(File file, List<Long> lineNums,

                List<String> exceptFileNames) throws IOException {

           File[] childList = file.listFiles();

           String fileName = null;

           String extra = null;

            for (File child : childList) {

                fileName = child.getName();

                 if (child.isDirectory()) {

                      if (exceptFileNames != null

                                && !exceptFileNames.contains(child.getName())) {

                            traversalFile(child, lineNums, exceptFileNames);

                     }

                } else {

                     extra = fileName.contains( ".") ? fileName.substring(fileName

                                .lastIndexOf( ".")) : fileName;

                      if (extra.equals( ".java") || extra.equals(".jsp" )

                                || extra.equals( ".js")) {

                          System. out.println(child.getName().substring(

                                     child.getName().lastIndexOf( ".")));

                           lineNums.add( getLineNum(child));

                     }

                }

           }

     }

 

      /**

      * 得到某个文件有多少行（非目录）

      *

      * @param file

      * @return

      * @throws IOException

      */

      public static long getLineNum(File file) throws IOException {

            long num = 0L;

           FileInputStream f = new FileInputStream(file);

           BufferedReader dr = new BufferedReader( new InputStreamReader(f));

           String line = dr.readLine();

            while (line != null) {

                 if (!line.trim().equals( "")) {

                     num++;

                }

                line = dr.readLine();

           }

            return num;

     }

 

}