java檔案和資料夾複製、刪除、移動操作
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.InputStream;
import java.io.PrintWriter;
public class CopyFile {
public CopyFile() {
}
/**
* 新建目錄
* @param folderPath String 如 c:/fqf
* @return boolean
*/
public void newFolder(String folderPath) {
try {
String filePath = folderPath;
filePath = filePath.toString();
java.io.File myFilePath = new java.io.File(filePath);
if (!myFilePath.exists()) {
myFilePath.mkdir();
}
}
catch (Exception e) {
System.out.println("新建目錄操作出錯");
e.printStackTrace();
}
}
/**
* 新建檔案
* @param filePathAndName String 檔案路徑及名稱 如c:/fqf.txt
* @param fileContent String 檔案內容
* @return boolean
*/
public void newFile(String filePathAndName, String fileContent) {
try {
String filePath = filePathAndName;
filePath = filePath.toString(); //取的路徑及檔名
File myFilePath = new File(filePath);
/**如果檔案不存在就建一個新檔案*/
if (!myFilePath.exists()) {
myFilePath.createNewFile();
}
FileWriter resultFile = new FileWriter(myFilePath); //用來寫入字元檔案的便捷類, 在給出 File 物件的情況下構造一個 FileWriter 物件
PrintWriter myFile = new PrintWriter(resultFile); //向文字輸出流列印物件的格式化表示形式,使用指定檔案建立不具有自動行重新整理的新 PrintWriter。
String strContent = fileContent;
myFile.println(strContent);
resultFile.close();
}
catch (Exception e) {
System.out.println("新建檔案操作出錯");
e.printStackTrace();
}
}
/**
* 刪除檔案
* @param filePathAndName String 檔案路徑及名稱 如c:/fqf.txt
* @param fileContent String
* @return boolean
*/
public void delFile(String filePathAndName) {
try {
String filePath = filePathAndName;
filePath = filePath.toString();
java.io.File myDelFile = new java.io.File(filePath);
myDelFile.delete();
}
catch (Exception e) {
System.out.println("刪除檔案操作出錯");
e.printStackTrace();
}
}
/**
* 刪除資料夾
* @param filePathAndName String 資料夾路徑及名稱 如c:/fqf
* @param fileContent String
* @return boolean
*/
public void delFolder(String folderPath) {
try {
delAllFile(folderPath); //刪除完裡面所有內容
String filePath = folderPath;
filePath = filePath.toString();
java.io.File myFilePath = new java.io.File(filePath);
myFilePath.delete(); //刪除空資料夾
}
catch (Exception e) {
System.out.println("刪除資料夾操作出錯");
e.printStackTrace();
}
}
/**
* 刪除資料夾裡面的所有檔案
* @param path String 資料夾路徑 如 c:/fqf
*/
public void delAllFile(String path) {
File file = new File(path);
if (!file.exists()) {
return;
}
if (!file.isDirectory()) {
return;
}
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();
}
if (temp.isDirectory()) {
delAllFile(path+"/"+ tempList[i]);//先刪除資料夾裡面的檔案
delFolder(path+"/"+ tempList[i]);//再刪除空資料夾
}
}
}
/**
* 複製單個檔案
* @param oldPath String 原檔案路徑 如：c:/fqf.txt
* @param newPath String 複製後路徑 如：f:/fqf.txt
* @return boolean
*/
public void copyFile(String oldPath, String newPath) {
try {
// int bytesum = 0;
int byteread = 0;
File oldfile = new File(oldPath);
if (oldfile.exists()) { //檔案存在時
InputStream inStream = new FileInputStream(oldPath); //讀入原檔案
FileOutputStream fs = new FileOutputStream(newPath);
byte[] buffer = new byte[1444];
// int length;
while ( (byteread = inStream.read(buffer)) != -1) {
// bytesum += byteread; //位元組數 檔案大小
// System.out.println(bytesum);
fs.write(buffer, 0, byteread);
}
inStream.close();
}
}
catch (Exception e) {
System.out.println("複製單個檔案操作出錯");
e.printStackTrace();
}
}
/**
* 複製整個資料夾內容
* @param oldPath String 原檔案路徑 如：c:/fqf
* @param newPath String 複製後路徑 如：f:/fqf/ff
* @return boolean
*/
public void copyFolder(String oldPath, String newPath) {
try {
(new File(newPath)).mkdirs(); //如果資料夾不存在 則建立新資料夾
File a=new File(oldPath);
String[] file=a.list();
File temp=null;
for (int i = 0; i < file.length; i++) {
if(oldPath.endsWith(File.separator)){
temp=new File(oldPath+file[i]);
}
else{
temp=new File(oldPath+File.separator+file[i]);
}
if(temp.isFile()){
FileInputStream input = new FileInputStream(temp);
FileOutputStream output = new FileOutputStream(newPath + "/" +
(temp.getName()).toString());
byte[] b = new byte[1024 * 5];
int len;
while ( (len = input.read(b)) != -1) {
output.write(b, 0, len);
}
output.flush();
output.close();
input.close();
}
if(temp.isDirectory()){//如果是子資料夾
copyFolder(oldPath+"/"+file[i],newPath+"/"+file[i]);
}
}
}
catch (Exception e) {
System.out.println("複製整個資料夾內容操作出錯");
e.printStackTrace();
}
}
/**
* 移動檔案到指定目錄
* @param oldPath String 如：c:/fqf.txt
* @param newPath String 如：d:/fqf.txt
*/
public void moveFile(String oldPath, String newPath) {
copyFile(oldPath, newPath);
delFile(oldPath);
}
/**
* 移動檔案到指定目錄
* @param oldPath String 如：c:/fqf.txt
* @param newPath String 如：d:/fqf.txt
*/
public void moveFolder(String oldPath, String newPath) {
copyFolder(oldPath, newPath);
delFolder(oldPath);
}
public static void main(String[] args){
CopyFile file = new CopyFile();
// file.newFolder("newFolder22222");
file.delAllFile("E:/1");
}
// 拷貝檔案
private void copyFile2(String source, String dest) {
try {
File in = new File(source);
File out = new File(dest);
FileInputStream inFile = new FileInputStream(in);
FileOutputStream outFile = new FileOutputStream(out);
byte[] buffer = new byte[10240];
int i = 0;
while ((i = inFile.read(buffer)) != -1) {
outFile.write(buffer, 0, i);
}//end while
inFile.close();
outFile.close();
}//end try
catch (Exception e) {
}//end catch
}//end copyFile
}