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张良(004796)
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ruoyi-cai/src/main/java/com/ruoyi/cai/util/FileUtils.java
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ruoyi-cai/src/main/java/com/ruoyi/cai/util/FileUtils.java
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package com.ruoyi.cai.util;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.util.ResourceUtils;
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import java.io.*;
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import java.net.HttpURLConnection;
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import java.net.URL;
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import java.nio.file.Files;
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import java.util.List;
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/**
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* 文件工具类
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* <p>created on 2022/6/16 11:54</p>
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* @author ZL
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*/
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@Slf4j
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public class FileUtils {
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private final static String TEMP_PATH = "/temp";
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public static void main(String[] args) {
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String targetFile = "C:\\ffmpeg\\video\\55585858.mp4";
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// String filePath = "http://oss.nohi.vip/nono/20220816164358-F4A25960-F837-49B1-83F2-D41865FD46F8.mp4";
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String filePath = "https://download-video.hik-express.com/fc/20220817184523-909E6F0C-1FE3-4D4D-8A4E-296107EF08CD.mp4?Expires=1661168603&OSSAccessKeyId=LTAI5t9GNWcPxHVUMNU3WRqD&Signature=ybHhkkdhAqYt%2F7x07KYNnPDA9OY%3D";
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byte[] fileStream = getFileStream(filePath);
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byteToFile(fileStream,new File(targetFile));
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}
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/**
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* 得到文件流
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* @param url 网络图片URL地址
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* @return
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*/
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public static byte[] getFileStream(String url){
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InputStream inStream = null;
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try {
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URL httpUrl = new URL(url);
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HttpURLConnection conn = (HttpURLConnection)httpUrl.openConnection();
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conn.setRequestMethod("GET");
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conn.setConnectTimeout(10 * 1000);
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conn.setReadTimeout(10 * 1000);
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inStream = conn.getInputStream();//通过输入流获取图片数据
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return readInputStream(inStream);//得到图片的二进制数据
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} catch (Exception e) {
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throw new RuntimeException(e);
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} finally {
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if(inStream != null){
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try {
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inStream.close();
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} catch (IOException e) {
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log.error("流关闭失败",e);
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}
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}
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}
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}
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public static void downloadPath(String path,File targetFile){
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InputStream inStream = null;
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try {
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URL httpUrl = new URL(path);
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HttpURLConnection conn = (HttpURLConnection)httpUrl.openConnection();
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conn.setRequestMethod("GET");
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conn.setConnectTimeout(10 * 1000);
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conn.setReadTimeout(10 * 1000);
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inStream = conn.getInputStream();//通过输入流获取图片数据
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byte[] buffer = new byte[1024];
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try (OutputStream os = Files.newOutputStream(targetFile.toPath())){
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int len ;
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while((len = inStream.read(buffer)) != -1) {
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os.write(buffer, 0, len);
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os.flush();
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}
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}
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} catch (Exception e) {
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throw new RuntimeException(e);
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} finally {
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if(inStream != null){
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try {
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inStream.close();
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} catch (IOException e) {
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log.error("流关闭失败",e);
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}
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}
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}
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}
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/**
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* 从输入流中获取数据
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* @param inStream 输入流
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* @return
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* @throws Exception
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*/
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public static byte[] readInputStream(InputStream inStream) throws Exception{
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try (ByteArrayOutputStream outStream = new ByteArrayOutputStream()){
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byte[] buffer = new byte[1024];
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int len;
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while( (len=inStream.read(buffer)) != -1 ){
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outStream.write(buffer, 0, len);
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}
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return outStream.toByteArray();
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}
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}
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/**
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* 从输入流中获取数据
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* @param inputStream 输入流
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* @return
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* @throws Exception
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*/
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public static String readInputStreamByLine(InputStream inputStream) throws Exception{
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StringBuilder sb = new StringBuilder();
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try (BufferedReader br = new BufferedReader(new InputStreamReader(inputStream))){
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String str;
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while ((str = br.readLine()) != null) {
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sb.append(str);
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}
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}
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return sb.toString();
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}
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public static byte[] fileToByte(File file){
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try (InputStream in = Files.newInputStream(file.toPath())){
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byte[] data = new byte[in.available()];
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in.read(data);
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return data;
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} catch (IOException e) {
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throw new RuntimeException("文件转换字节失败",e);
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}
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}
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public static void byteToFile(byte[] bytes,File file){
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File parentFile = file.getParentFile();
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if(!parentFile.exists()){
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parentFile.mkdirs();
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}
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try (OutputStream outputStream = Files.newOutputStream(file.toPath())){
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outputStream.write(bytes);
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}catch (IOException e){
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throw new RuntimeException("字节写入文件失败!",e);
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}
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}
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public static File getTempFile() throws FileNotFoundException {
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File path = new File(ResourceUtils.getURL("classpath:").getPath());
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if (!path.exists()) {
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path = new File("");
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}
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File tempLocation = new File(path.getAbsolutePath() + TEMP_PATH);
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if (!tempLocation.exists()) {
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tempLocation.mkdirs();
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}
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return tempLocation;
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}
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public static String getRootFIle() throws FileNotFoundException {
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File path = new File(ResourceUtils.getURL("classpath:").getPath());
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if (!path.exists()) {
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path = new File("");
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}
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return path.getAbsolutePath();
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}
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public static boolean deleteFile(File deleteFile){
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if(deleteFile == null || !deleteFile.isFile()){
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return false;
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}
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return deleteFile.delete();
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}
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/**
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* 删除文件
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* @param rootFile
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* @param deleteFilePath
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*/
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public static void deleteFile(File rootFile, List<String> deleteFilePath){
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if(!rootFile.exists()){
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return;
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}
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File[] files = rootFile.listFiles();
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if(files == null){
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return;
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}
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for (File file : files) {
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if(!deleteFilePath.contains(file.getName())){
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try {
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String path = file.getAbsolutePath();
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if(file.isDirectory()){
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org.apache.commons.io.FileUtils.deleteDirectory(file);
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log.info("del dir success. path=[{}]", path);
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}
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} catch (IOException e) {
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log.error("清理文件的时候删除失败,filePath={}",file.getParentFile(),e);
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}
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}
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}
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}
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}
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