工作中需要优化代码里的中文警示语和异常信息，实在比较多，所以就写了个程序专门从代码里提取中文字符串。

java做的，比较简单，放上来备忘

package com.extractstr.app;import java.io.*;
import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;/*** 搜索字符串并输出到控制台*/
public class ExtractStr {public static String getHelpString(String[] args){String result = String.format("%s [path]", new Object[]{"a"});return result;}private void getFiles(String rootPath, final String fileExt, List<File> fileList){File f =new File(rootPath);File[] list=f.listFiles(new FileFilter() {@Overridepublic boolean accept(File f) {boolean ret = f.isDirectory() || (f.isFile() && f.getName().endsWith(fileExt));return ret;}});for(File fn : list){if (fn.isDirectory()){this.getFiles(fn.getAbsolutePath(), fileExt, fileList);}else{fileList.add(fn);}}}public List<File> run(String rootPath, String fileExt){List<File> result = new LinkedList<File>();this.getFiles(rootPath, fileExt, result);return result;}public List<String> parserSourceFile(List<String> patternList, File file, int miniCharCount) throws Exception {List<String> result = new LinkedList<String>();BufferedReader r = new BufferedReader(new FileReader(file));char[] buffer = new char[(int)file.length()];r.read(buffer, 0, (int)file.length());String text=new String(buffer, 0, buffer.length);for(String patternStr : patternList){//Pattern pattern = Pattern.compile("\"(.*?)\"");Pattern pattern = Pattern.compile(patternStr);Matcher matchers= pattern.matcher(text);while(matchers.find()){String t=matchers.group();if (t.length()>=miniCharCount)result.add(t);}}return result;}public static void main(String []args){if (args.length==0){StringBuilder sb = new StringBuilder().append("未传入需要搜索的有效的源代码路径").append("\n").append(ExtractStr.getHelpString(args));System.out.println(sb.toString());System.exit(1);}List<String> searchFolders=new ArrayList<String>(100);for(int i=0; i<=args.length-1;i++){File f=new File(args[i]);if (!f.isDirectory() || !f.exists())continue;searchFolders.add(f.getAbsolutePath());}List<String> patternList = new LinkedList<String>();patternList.add("'([\\u4E00-\\u9FA5]+)'");patternList.add("\"([\\u4E00-\\u9FA5]+)\"");ExtractStr es = new ExtractStr();List<File> fileList = new ArrayList<File>(1000);for(String sarchFolder : searchFolders){List<File> t=es.run(sarchFolder, ".php");fileList.addAll(t);}Set<String> outList=new HashSet<String>();for(File f : fileList){try{List<String> items=es.parserSourceFile(patternList, f, 12);outList.addAll(items);}catch(Exception e){e.printStackTrace();}}for(String str : outList){System.out.println(str);}}
}

对于拼接字符串的中文输出支持的不算好，而且也对中文的长度有限制（最少12个字符）