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() + "
行数：" + s.getLine() + " 
所在行内容：" + s.getContent()).append(IOUtils.LINE_SEPARATOR);
                sb.append("---------------------------------------------------------------------
");
            }
            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;
    }

}