package com.dy.pipIrrWebFile.util;
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import java.io.File;
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import java.io.FileNotFoundException;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.io.RandomAccessFile;
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import java.nio.channels.FileChannel;
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import org.apache.logging.log4j.LogManager;
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import org.apache.logging.log4j.Logger;
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public class FileUtil {
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protected static final Logger log = LogManager.getLogger(FileUtil.class.getName()) ;
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/**
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* 保存文件
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* @param fileAbsolutelyPath 文件绝对路径
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* @param input
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* @return 保存文件的是否成功的结果
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*/
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public boolean saveFile(String fileAbsolutelyPath , InputStream input){
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boolean success = true ;
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if(fileAbsolutelyPath == null || input == null){
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success = false ;
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}else{
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OutputStream os = null;
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try {
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os = new FileOutputStream(fileAbsolutelyPath);
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byte[] b = new byte[1024] ;
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int len = input.read(b) ;
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while(len > 0){
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os.write(b, 0, len);
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len = input.read(b) ;
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os.flush();
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}
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} catch (Exception e) {
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e.printStackTrace();
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success = false ;
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} finally {
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try {
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if(os != null){
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os.close();
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}
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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return success ;
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}
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/**
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* 复制文件
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* @param fromFile
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* @param realPath 绝对路径
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* @param newFileRelativityPath 相对路径
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* @return
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*/
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public boolean copyFile(File fromFile, String realPath, String newFileRelativityPath){
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boolean flag = true ;
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FileChannel fromChannel = null ;
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FileChannel toChannel = null ;
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try {
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fromChannel = new RandomAccessFile(fromFile, "r").getChannel();
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toChannel = new RandomAccessFile(new File(realPath + newFileRelativityPath), "rw").getChannel();
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fromChannel.transferTo(0, fromChannel.size(), toChannel);
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} catch (FileNotFoundException e) {
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flag = false ;
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log.error("复制文件出错:" + e.getMessage()) ;
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} catch (IOException e) {
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flag = false ;
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log.error("复制文件出错:" + e.getMessage()) ;
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}finally{
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try{
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if(fromChannel != null){
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fromChannel.close() ;
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}
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if(toChannel != null){
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toChannel.close() ;
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}
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}catch(Exception e){}finally{}
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}
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return flag ;
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}
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/**
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* 删除文件
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* @param f
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*/
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public boolean deleteFile(File f){
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boolean flag = false ;
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try{
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if(f != null){
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flag = f.delete() ;
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}
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}catch(Exception e){
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}finally{}
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return flag ;
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}
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/**
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* 删除文件
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* @param path
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*/
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public boolean deleteFile(String path){
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boolean flag = false ;
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try{
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if(path != null && !path.equals("")){
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File f = new File(path) ;
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if(f != null && f.exists()){
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flag = f.delete() ;
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}
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}
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}catch(Exception e){
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}finally{}
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return flag ;
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}
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}
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