java快速文件查找 java文件查找指定内容

基本结构吧，如图：

       实现该功能的为Read类，list为成员变量，存放需要查找的特定字符创，包括四个方法：
   

  

  

  

  

  

  

public String findOneFile(File f){
   StringBuffer record = new StringBuffer();
   if(f.isDirectory()){
    return null;
   }
   try {
    BufferedReader br = new BufferedReader(new FileReader(f));
    String pline = br.readLine();
    while(pline != null){
     String onefile = findAll***(pline,f);
     if(onefile.trim() != null)
      if(record.toString().indexOf(onefile) == -1)
       record.append(onefile);
     pline = br.readLine();
    }
    
    br.close();
   } catch (FileNotFoundException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
   catch(IOException e1){
    e1.printStackTrace();
   }
   return record.toString() ;
  }

  

public String findAll***(String pline,File f){
   //int flag = 0 ;
   StringBuffer sb =new StringBuffer();
   for(int i=0 ; i < list.size(); i++){
    int j = pline.indexOf(list.get(i).trim());
    if(j>-1){
     sb.append("what you find?--->    "+list.get(i).trim()+"\t"+f.getName()+"\t\n") ;
    }
    continue ;
   }
   
   return sb.toString();
  }

  

  

  

程序代码：

public class Read {
  public static final List<String> list = new ArrayList<String>(Arrays.asList( 字符串集 ...  ));
  public String[] getFiles(File f){
   if(f.isDirectory()){
    return f.list();
   }
   return null;
  }
  public String findAllFile(String [] files){
   StringBuffer result = new StringBuffer();
   for(int i=0 ; i<files.length ; i++)
   {
    if(files[i].matches("abc*")){
     File nowFile = new File("log"+System.getProperty("file.separator")+files[i]);
     String allfile = findOneFile(nowFile);
     if(allfile.trim() != null)
      result.append(allfile);
    }
   }
   return result.toString();
  }
  public String findOneFile(File f){
   StringBuffer record = new StringBuffer();
   if(f.isDirectory()){
    return null;
   }
   try {
    BufferedReader br = new BufferedReader(new FileReader(f));
    String pline = br.readLine();
    while(pline != null){
     String onefile = findAll***(pline,f);
     if(onefile.trim() != null)
      if(record.toString().indexOf(onefile) == -1)
       record.append(onefile);
     pline = br.readLine();
    }
    
    br.close();
   } catch (FileNotFoundException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
   catch(IOException e1){
    e1.printStackTrace();
   }
   return record.toString() ;
  }
  
  public String findAll***(String pline,File f){
   //int flag = 0 ;
   StringBuffer sb =new StringBuffer();
   for(int i=0 ; i < list.size(); i++){
    int j = pline.indexOf(list.get(i).trim());
    if(j>-1){
     sb.append("what you find?--->    "+list.get(i).trim()+"\t"+f.getName()+"\t\n") ;
    }
    continue ;
   }
   
   return sb.toString();
  }
  public static void main(String[] args) {
   // TODO Auto-generated method stub
   Read read = new Read();
   File directory =new File("目录名");
   File result = new File("result.txt");
   String resultString = null;
   
   String[] files=read.getFiles(directory);
   if(files != null)
     resultString = read.findAllFile(files);
   
   try{
    BufferedWriter bw = new BufferedWriter(new FileWriter(result,false));
    bw.write(resultString);
    bw.flush();
    bw.close();
   }catch(IOException e){
    e.printStackTrace();   
   }}
 }