public class ClearComment { public static void main(String args[]) { removeComment("D:\\Workspaces\\Softphone\\src"); } /** * 清除注释 * @param dir */ public static void removeComment(String dir){ try { deepDir(dir); } catch (FileNotFoundException e) { e.printStackTrace(); }catch (UnsupportedEncodingException e) { e.printStackTrace(); } } /** * 递归查找出根目录下所有文件进行清除注释 * @param rootDir * @throws FileNotFoundException * @throws UnsupportedEncodingException */ public static void deepDir(String rootDir) throws FileNotFoundException, UnsupportedEncodingException { File folder = new File(rootDir); if (folder.isDirectory()) { String[] files = folder.list(); for (int i = 0; i < files.length; i++) { File file = new File(folder, files[i]); if (file.isDirectory() && file.isHidden() == false) { System.out.println(file.getPath()); deepDir(file.getPath()); } else if (file.isFile()) { clearComment(file.getPath()); } } } else if (folder.isFile()) { clearComment(folder.getPath()); } } /** * @param currentDir * 当前目录 * @param currentFileName * 当前文件名 * @throws FileNotFoundException * @throws UnsupportedEncodingException */ /** * @param filePathAndName * @throws FileNotFoundException * @throws UnsupportedEncodingException */ public static void clearComment(String filePathAndName) throws FileNotFoundException, UnsupportedEncodingException { StringBuffer buffer = new StringBuffer(); String line = null; // 用来保存每行读取的内容 InputStream is = new FileInputStream(filePathAndName); BufferedReader reader = new BufferedReader(new InputStreamReader(is,"UTF-8")); try { line = reader.readLine(); } catch (IOException e) { e.printStackTrace(); } // 读取第一行 while (line != null) { // 如果 line 为空说明读完了 buffer.append(line); // 将读到的内容添加到 buffer 中 buffer.append("\r\n"); // 添加换行符 try { line = reader.readLine(); } catch (IOException e) { e.printStackTrace(); } // 读取下一行 } // 1、清除单行的注释,如: //某某,正则为 :\/\/.* // 2、清除单行的注释,如:/** 某某 */,正则为:\/\*\*.*\*\/ // 3、清除单行的注释,如:/* 某某 */,正则为:\/\*.*\*\/ // 4、清除多行的注释,如: // /* 某某1 // 某某2 // */ // 正则为:.*/\*(.*)\*/.* // 5、清除多行的注释,如: // /** 某某1 // 某某2 // */ // 正则为:/\*\*(\s*\*\s*.*\s*?)* String filecontent = buffer.toString(); Map<String, String> patterns = new HashMap<String, String>(); patterns.put("([^:])\\/\\/.*", "$1");// 匹配在非冒号后面的注释,此时就不到再遇到http:// patterns.put("\\s+\\/\\/.*", "");// 匹配“//”前是空白符的注释 patterns.put("^\\/\\/.*", ""); patterns.put("^\\/\\*\\*.*\\*\\/$", ""); patterns.put("\\/\\*.*\\*\\/", ""); // patterns.put("/\\*(\\s*\\*\\s*.*\\s*?)*\\*\\/", ""); patterns.put("/\\*(\\s*\\*?\\s*.*\\s*?)*", ""); Iterator<String> keys = patterns.keySet().iterator(); String key = null, value = ""; while (keys.hasNext()) { // 经过多次替换 key = keys.next(); value = patterns.get(key); filecontent = replaceAll(filecontent, key, value); } System.out.println(filecontent); // 再输出到原文件 try { File f = new File(filePathAndName); if (!f.getParentFile().exists()) { f.getParentFile().mkdirs(); } FileOutputStream out = new FileOutputStream(filePathAndName); byte[] bytes = filecontent.getBytes("UTF-8"); out.write(bytes); out.flush(); out.close(); } catch (IOException e) { e.printStackTrace(); } } /** * @param fileContent * 内容 * @param patternString * 匹配的正则表达式 * @param replace * 替换的内容 * @return */ public static String replaceAll(String fileContent, String patternString, String replace) { String str = ""; Matcher m = null; Pattern p = null; try { p = Pattern.compile(patternString); m = p.matcher(fileContent); str = m.replaceAll(replace); } catch (Exception e) { e.printStackTrace(); } finally { m = null; p = null; } // 获得匹配器对象 return str; } }
清楚代码的注释内容
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转载自zcz123.iteye.com/blog/2228191
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