package tools;

import java.io.*;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.LinkedList;

import java.util.List;

public class ReadUtil {

public List<String> readToString(String file) {

List<String> strings = new ArrayList<>();

BufferedReader reader;

try {

reader = new BufferedReader(new FileReader(file));

String line = reader.readLine();

while (line != null) {

strings.add(line);

// read next line

line = reader.readLine();

}

reader.close();

} catch (IOException e) {

e.printStackTrace();

}

return strings;

}

public static List<String> noRecursion(File dir, String types){

int fileNum=0,folderNum=0;

List<String> lists = new ArrayList<String>();

LinkedList<File> list=new LinkedList<File>();

File[] tempList = dir.listFiles();

for (int i = 0; i < tempList.length; i++) {

if (tempList[i].isFile()) {

if(tempList[i].toString().endsWith(types)) {

lists.add(tempList[i].toString());

}

}}

if(dir.exists()){

if (null==dir.listFiles()){

return null;

}

list.addAll(Arrays.asList(dir.listFiles()));

while(!list.isEmpty()){

File[] files = list.removeFirst().listFiles();

if(null==files){

continue;

}

for (File f:files) {

if (f.isDirectory()) {

list.add(f);

folderNum++;

} else {

if(f.getAbsolutePath().endsWith(types)){

lists.add(f.getAbsolutePath());

}

fileNum++;

}

}

}

}else{

System.out.println("文件不存在！");

}

//System.out.println("文件夹数量:" + folderNum + ",文件数量:" + fileNum);

return lists;

}

}