Java 在本地文件中查找固定字符串

适用范围：只适用于在文本文档中查找（如，txt、java、c等等，并不适用与doc、xls等等这些文件），可嵌套文件夹。但是对中文不支持。

例如：文件夹：F:/demo

子文件夹：F:/demo/ert

查找结果：

最后附上全部代码：

 package com.stafen.main;

 import java.io.File;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;

 import org.apache.commons.io.FileUtils;
 import org.apache.commons.io.IOUtils;

 public class Test {
 　　/** 要查找的字符串 **/
     private static String strSearch = "QCNEA";
     /** 要查找的目录名称 **/
     private static String strPath = "E:/Project";

     @SuppressWarnings("unchecked")
     public static void main(String[] args) {

         File searchDir = new File(strPath);
         List<Search> list = new ArrayList<Search>();
         try {
             Collection<File> files = FileUtils.listFiles(searchDir, null, true);
             List<String> lines = null;
             for (File file : files) {
                 try {
                     lines = FileUtils.readLines(file, "UTF-8");
                 } catch (IOException e) {
                     e.printStackTrace();
                 }
                 for (int i = 0; i < lines.size(); i++) {
                     if (lines.get(i).indexOf(strSearch) != -1) {
                         Search s = new Search();
                         s.setFilename(file.getPath());
                         s.setLine(i + 1);
                         s.setContent(lines.get(i));
                         list.add(s);
                     }
                 }
             }
             StringBuffer sb = new StringBuffer();
             if(list.size() == 0) {
                 System.out.println("【没有查到该字符串！】");
                 return ;
             }
             for (Search s : list) {
                 sb.append("文件路径：" + s.getFilename() + "\n行数：" + s.getLine() + " \n所在行内容：" + s.getContent()).append(IOUtils.LINE_SEPARATOR);
                 sb.append("---------------------------------------------------------------------\n");
             }
             System.out.println(sb.toString());
         } catch (Exception e) {
             System.out.println("【没有找到该目录！】");
         }
     }

 }

Search.java文件

public class Search {

    private String filename;
    private int line;
    private String content;

    public String getFilename() {
        return filename;
    }

    public void setFilename(String filename) {
        this.filename = filename;
    }

    public String getContent() {
        return content;
    }

    public void setContent(String content) {
        this.content = content;
    }

    public void setLine(int line) {
        this.line = line;
    }

    public int getLine() {
        return line;
    }

}