删除java注释
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
?
/**?
?* title: 清除注释?
?*??
?* @author Administrator?
?* @时间 2009-7-30:下午09:28:10?
?*/?
public class ClearComment {??
?
??? /** 根目录 */?
??? public static String rootDir = "C:\\Documents and Settings\\Administrator\\桌面\\hx\\src\\org\\hi";??
//"D:\\testdir??
??? // D:\\workspace\\proj_map\\src\\com??
??? public static void main(String args[]) throws FileNotFoundException,??
?????????? UnsupportedEncodingException {??
?
?????? deepDir(rootDir);??
?
?? }??
?
?? 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) {??
?????????? // TODO Auto-generated catch block??
?????????? 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;??
?
??? }??
?
}?
