利用java小工具-----统计项目代码量

package com.util;import java.io.BufferedReader;import java.io.File;import java.io.FileNotFoundException;import java.io.FileReader;import java.io.IOException;import java.util.regex.Matcher;import java.util.regex.Pattern;/** *  * 类名：CodeCounter.java<br> * <p> * 功能：统计项目代码量 工具类 * </p> *  * @Author:<a href="mailto:[e-mail]">lilong</a> <br/> * @Date:2013-3-15<br/> * @Time:下午5:12:11 <br/> * @Version:1.1 <br/> */public class CodeCounter {static long commentLine = 0;static long whiteLine = 0;static long normalLine = 0;static long totalLine = 0;static boolean comment = false;public static void main(String[] args) {File file = new File("F:\\Workspaces\\Workspaces\\stockassistant"); // 在这里输入需要统计的文件夹路径getChild(file);System.out.println("有效代码行数: " + normalLine);System.out.println("注释行数: " + commentLine);System.out.println("空白行数: " + whiteLine);System.out.println("总代码行数: " + totalLine);}private static void getChild(File child) { // 遍历子目录if (child.getName().matches(".*\\.java$")) { // 只查询java文件try {BufferedReader br =  new BufferedReader(new FileReader(child));String line = "";while ((line = br.readLine()) != null) {parse(line);}} catch (FileNotFoundException e1) {e1.printStackTrace();} catch (IOException e) {e.printStackTrace();}}if (child.listFiles() != null) {for (File f : child.listFiles()) {getChild(f);}}}private static void parse(String line) {line = line.trim();totalLine++;if (line.length() == 0) {whiteLine++;} else if (comment) {commentLine++;if (line.endsWith("*/")) {comment = false;} else if (line.matches(".*\\*/.+")) {normalLine++;comment = false;}} else if (line.startsWith("//")) {commentLine++;} else if (line.matches(".+//.*")) {commentLine++;normalLine++;} else if (line.startsWith("/*") && line.matches(".+\\*/.+")) {commentLine++;normalLine++;if (findPair(line)) {comment = false;} else {comment = true;}} else if (line.startsWith("/*") && !line.endsWith("*/")) {commentLine++;comment = true;} else if (line.startsWith("/*") && line.endsWith("*/")) {commentLine++;comment = false;} else if (line.matches(".+/\\*.*") && !line.endsWith("*/")) {commentLine++;normalLine++;if (findPair(line)) {comment = false;} else {comment = true;}} else if (line.matches(".+/\\*.*") && line.endsWith("*/")) {commentLine++;normalLine++;comment = false;} else {normalLine++;}}private static boolean findPair(String line) { // 查找一行中/*与*/是否成对出现int count1 = 0;int count2 = 0;Pattern p = Pattern.compile("/\\*");Matcher m = p.matcher(line);while (m.find()) {count1++;}p = Pattern.compile("\\*/");m = p.matcher(line);while (m.find()) {count2++;}return (count1 == count2);}}

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