java实现遍历整个目录查找文件内容的功能
微wx笑
2019-08-30【编程语言】
26
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java
java实现遍历整个目录查找文件内容的功能，也就是查找哪些文件中包含指定的内容。
java实现遍历整个目录查找文件内容的功能
package com.weixiao.sinablog;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.commons.lang3.StringUtils;
import org.apache.log4j.Logger;
public class IOHelper {
private static Logger logger = Logger.getLogger(IOHelper.class);
/**
* 获取 BufferedReader 实例
* @author lipw
* @date 2017年12月14日上午9:50:37
* @param filePath 文件路径
* @return
*/
public static BufferedReader getBufferedReader(String filePath) {
File file = new File(filePath);
logger.warn(file.getAbsolutePath());
BufferedReader reader = null;
if (file.exists()){
try {
reader = new BufferedReader(new FileReader(file));
} catch (Exception e) {
e.printStackTrace();
} finally {
// todo
}
}
return reader;
}
/**
* 获取 BufferedWriter 实例
* @author lipw
* @date 2017年12月14日上午9:50:07
* @param filePath 文件路径
* @return
*/
public static BufferedWriter getBufferedWriter(String filePath) {
File file = new File(filePath);
logger.warn(file.getAbsolutePath());
BufferedWriter writer = null;
try {
writer = new BufferedWriter(new FileWriter(file));
} catch (Exception e) {
e.printStackTrace();
} finally {
// todo
}
return writer;
}
/**
* 处理博客排序
* @author lipw
* @date 2017年12月14日上午9:47:06
* @param filePath 混序文件路径
* @param outPath 按顺序排列的输出文件路径
*/
public static void handBlogOrder(String filePath, String outPath) {
BufferedReader reader = getBufferedReader(filePath);
BufferedWriter writer = getBufferedWriter(outPath);
// 用户按排名记录
Map<Integer, String> blogMap = new HashMap<Integer, String>();
if (reader == null) {
logger.warn("读取文件失败！");
return;
}
if (writer == null) {
logger.warn("写入文件失败！");
return;
}
String lineStr = null;
int line = 1;
try {
// 逐行读取并处理
while ((lineStr = reader.readLine()) != null) {
// 6,===http://blog.csdn.net/augusdi
lineStr = lineStr.replaceAll("\\[com.weixiao.download.CsdnBlogDownloader\\]\\-排名：", "");
String[] blog = lineStr.split(",===");
if (blog.length != 2) {
continue;
}
if (blog[0].length() > 3) {
continue;
}
Integer num = Integer.parseInt(blog[0]);
if (num > 200) {
continue;
}
System.out.println("line" + line + ":" + lineStr);
line++;
// 放到 Map 缓存中
blogMap.put(num, lineStr);
}
// 根据排名索引读取并写入文件
for (int i = 0; i < 201; i++) {
lineStr = blogMap.get(i);
if (lineStr != null) {
writer.write(lineStr + "\r\n");
}
}
} catch (Exception e) {
e.printStackTrace();
} finally {
// 用完了记得关闭
if (reader != null) {
try {
reader.close();
} catch (Exception e) {
e.printStackTrace();
}
}
// 用完了记得关闭
if (writer != null) {
try {
writer.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
/**
* 遍历指定目录及子目录下的文件
*
* @author testcs_dn
* @date 2014年12月12日下午2:33:49
* @param file 要遍历的指定目录
* @param collector 符合条件的结果添加到此List<File>中
* @param pathInclude 路径中包含指定的字符串
* @param fileNameInclude 文件名（不包含扩展名）中包含指定的字符串
* @param extnEquals 文件扩展名为指定字符串
* @throws IOException
*/
public static void listFiles(File file,List<File> collector, String pathInclude, String fileNameInclude, String extnEquals, String searchContent) throws IOException {
if (file.isFile()
&& (StringUtils.isBlank(pathInclude) || file.getAbsolutePath().indexOf(pathInclude) != -1)
&& (StringUtils.isBlank(fileNameInclude) || file.getName().indexOf(fileNameInclude) != -1)
&& (StringUtils.isBlank(extnEquals) || file.getName().endsWith(extnEquals))
){
if (contains(file.getAbsolutePath(), searchContent)){
collector.add(file);
}
}
if((!file.isHidden() && file.isDirectory()) && !isIgnoreFile(file)) {
File[] subFiles = file.listFiles();
for(int i = 0; i < subFiles.length; i++) {
listFiles(subFiles[i],collector, pathInclude, fileNameInclude, extnEquals, searchContent);
}
}
}
private static boolean isIgnoreFile(File file) {
List<String> ignoreList = new ArrayList<String>();
ignoreList.add(".svn");
ignoreList.add("CVS");
ignoreList.add(".cvsignore");
ignoreList.add("SCCS");
ignoreList.add("vssver.scc");
ignoreList.add(".DS_Store");
for(int i = 0; i < ignoreList.size(); i++) {
if(file.getName().equals(ignoreList.get(i))) {
return true;
}
}
return false;
}
/**
* 判断文件中是否包含指定的内容
* @author lipw
* @date 2019年6月6日下午1:46:20
* @param filePath
* @param searchContent
* @return
*/
public static boolean contains(String filePath, String searchContent) {
if (null == searchContent || searchContent.isEmpty() || searchContent.length() == 0){
return false;
}
BufferedReader reader = getBufferedReader(filePath);
if (reader == null) {
logger.warn("读取文件失败！");
return false;
}
String lineStr = null;
try {
// 逐行读取并处理
while ((lineStr = reader.readLine()) != null) {
if (lineStr.indexOf(searchContent) != -1){
return true;
}
}
} catch (Exception e) {
e.printStackTrace();
} finally {
// 用完了记得关闭
if (reader != null) {
try {
reader.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
return false;
}
public static void main(String[] args) {
//处理博客排序
//handBlogOrder("/Users/aven/Downloads/blogOrder.txt", "/Users/aven/Downloads/blogOrder200.txt");
///Users/aven/Downloads/EmpireCMS_7.5_SC_UTF8/upload
List<File> collector = new ArrayList<File>();
try {
//listFiles(new File("/Users/aven/Downloads/EmpireCMS_7.5_SC_UTF8/upload/e/"), collector, null, null, null, "[!--bclassname--]");
//listFiles(new File("/Users/aven/Downloads/EmpireCMS_7.5_SC_UTF8/upload/e/"), collector, null, null, null, "listshowclass"); // /Users/aven/Downloads/EmpireCMS_7.5_SC_UTF8/upload/e/admin/template/MakeBq.php
//listFiles(new File("/Users/aven/Downloads/EmpireCMS_7.5_SC_UTF8/upload/e/"), collector, null, null, null, "function AddNews(");
//listFiles(new File("/Users/aven/Downloads/EmpireCMS_7.5_SC_UTF8/upload/e/"), collector, null, null, null, "function GetFpicToTpic(");
//listFiles(new File("/Users/aven/Downloads/EmpireCMS_7.5_SC_UTF8/upload/e/"), collector, null, null, null, "function ReturnAddF");
//listFiles(new File("/Users/aven/Downloads/EmpireCMS_7.5_SC_UTF8/upload/e/"), collector, null, null, null, "function EditNews");
//listFiles(new File("/Users/aven/Downloads/ivu4e.com20190815/"), collector, null, null, null, "function printerror");
listFiles(new File("/Users/aven/Downloads/EmpireCMS_7.5_SC_UTF8/upload/e/"), collector, null, null, null, "function do_dbconnect");
System.out.println("---------");
System.out.println("---------");
System.out.println("---------");
System.out.println("---------");
for (File file : collector){
System.out.println(file.getAbsolutePath());
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}本文由 微wx笑 创作，采用 署名-非商业性使用-相同方式共享 4.0 许可协议，转载请附上原文出处链接及本声明。
原文链接：https://www.ivu4e.cn/blog/lang/2019-08-30/172.html
