FileUrl

package com.rscode.credits.util;import java.io.BufferedReader;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.util.ArrayList;import java.util.List;public class FileUtil { ???/** ????* 根据输入流保存文件 ????* @param ins 输入流 ????* @param fileName 文件url ????* @throws IOException 使用者自己处理异常 ????*/ ???public static void saveFileByInputStream(InputStream ins,String fileName) throws IOException{ ???????FileOutputStream fos = new FileOutputStream(fileName); ???????byte[] b = new byte[1024]; ???????while((ins.read(b)) != -1){ ???????????fos.write(b); ???????} ???????ins.close(); ???????fos.close(); ???} ???/** ????* 删除文件夹下所有文件 ????* @param path ????* @return ????*/ ???public static boolean delAllFile(String path) { ??????????boolean flag = false; ??????????File file = new File(path); ??????????if (!file.exists()) { ????????????return flag; ??????????} ??????????if (!file.isDirectory()) { ????????????return flag; ??????????} ??????????String[] tempList = file.list(); ??????????File temp = null; ??????????for (int i = 0; i < tempList.length; i++) { ?????????????if (path.endsWith(File.separator)) { ????????????????temp = new File(path + tempList[i]); ?????????????} else { ?????????????????temp = new File(path + File.separator + tempList[i]); ?????????????} ?????????????if (temp.isFile()) { ????????????????temp.delete(); ?????????????????????????????} ???????????????????????} ??????????return flag; ????????????} ???/** ????* 读取文本格式文件,按行读取 ????* @param filePath ????*/ ???public static List<String> readTxt(String filePath) { ????????List<String> stringList = new ArrayList<>(); ?????????try { ???????????File file = new File(filePath); ???????????if(file.isFile() && file.exists()) { ?????????????InputStreamReader isr = new InputStreamReader(new FileInputStream(file), "GBK"); ?????????????BufferedReader br = new BufferedReader(isr); ?????????????String lineTxt = null; ?????????????while ((lineTxt = br.readLine()) != null) { ?????????????????stringList.add(lineTxt); ?????????????} ?????????????br.close(); ???????????} else { ?????????????System.out.println("文件不存在!"); ???????????} ?????????} catch (Exception e) { ???????????System.out.println("文件读取错误!"); ?????????} ???????return stringList; ????????????} ???/** ????* 获取文件下所有文件 ????* @param path ????*/ ????public static ?List<File> getFiles(String path) { ???????????File file = new File(path); ???????????List<File> fileList = new ArrayList<>(); ???????????// 如果这个路径是文件夹 ???????????if (file.isDirectory()) { ???????????????// 获取路径下的所有文件 ???????????????File[] files = file.listFiles(); ???????????????for (int i = 0; i < files.length; i++) { ???????????????????System.out.println(files[i].getName()); ???????????????????fileList.add(files[i]); ????????????????????????????????} ???????????} ???????????return fileList; ???????} ???public static void saveFileByFile(){ ???????????????????}}