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：

 1 package com.stafen.main;
 2 
 3 import java.io.File;
 4 import java.io.IOException;
 5 import java.util.ArrayList;
 6 import java.util.Collection;
 7 import java.util.List;
 8 
 9 import org.apache.commons.io.FileUtils;
10 import org.apache.commons.io.IOUtils;
11 
12 public class Test {
13 　　/** 要查找的字符串 **/
14     private static String strSearch = "QCNEA";
15     /** 要查找的目录名称 **/
16     private static String strPath = "E:/Project";
17     
18     @SuppressWarnings("unchecked")
19     public static void main(String[] args) {
20         
21         File searchDir = new File(strPath);
22         List<Search> list = new ArrayList<Search>();
23         try {
24             Collection<File> files = FileUtils.listFiles(searchDir, null, true);
25             List<String> lines = null;
26             for (File file : files) {
27                 try {
28                     lines = FileUtils.readLines(file, "UTF-8");
29                 } catch (IOException e) {
30                     e.printStackTrace();
31                 }
32                 for (int i = 0; i < lines.size(); i++) {
33                     if (lines.get(i).indexOf(strSearch) != -1) {
34                         Search s = new Search();
35                         s.setFilename(file.getPath());
36                         s.setLine(i + 1);
37                         s.setContent(lines.get(i));
38                         list.add(s);
39                     }
40                 }
41             }
42             StringBuffer sb = new StringBuffer();
43             if(list.size() == 0) {
44                 System.out.println("【没有查到该字符串！】");
45                 return ;
46             }
47             for (Search s : list) {
48                 sb.append("文件路径：" + s.getFilename() + "
行数：" + s.getLine() + " 
所在行内容：" + s.getContent()).append(IOUtils.LINE_SEPARATOR);
49                 sb.append("---------------------------------------------------------------------
");
50             }
51             System.out.println(sb.toString());
52         } catch (Exception e) {
53             System.out.println("【没有找到该目录！】");
54         }
55     }
56 
57 }

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;
    }

}