从源代码里提取中文字符串的java类详解编程语言

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。

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() { 
            @Override 
            public 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）