java文件和文件夾復制、刪除、移動操作
阿新 • • 發佈:2017-06-15
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[java] view plain copy
- 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();
- }
- }
- /**
- * 新建文件
- * @param filePathAndName String 文件路徑及名稱 如c:/fqf.txt
- * @param fileContent String 文件內容
- * @return boolean
- */
- public void newFile(String filePathAndName, String fileContent) {
- try {
- String filePath = filePathAndName;
- filePath = filePath.toString(); //取的路徑及文件名
- File myFilePath = new File(filePath);
- /**如果文件不存在就建一個新文件*/
- if (!myFilePath.exists()) {
- myFilePath.createNewFile();
- }
- FileWriter resultFile = new FileWriter(myFilePath); //用來寫入字符文件的便捷類, 在給出 File 對象的情況下構造一個 FileWriter 對象
- PrintWriter myFile = new PrintWriter(resultFile); //向文本輸出流打印對象的格式化表示形式,使用指定文件創建不具有自動行刷新的新 PrintWriter。
- String strContent = fileContent;
- myFile.println(strContent);
- resultFile.close();
- }
- catch (Exception e) {
- System.out.println("新建文件操作出錯");
- e.printStackTrace();
- }
- }
- /**
- * 刪除文件
- * @param filePathAndName String 文件路徑及名稱 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("刪除文件操作出錯");
- e.printStackTrace();
- }
- }
- /**
- * 刪除文件夾
- * @param filePathAndName String 文件夾路徑及名稱 如c:/fqf
- * @param fileContent String
- * @return boolean
- */
- public void delFolder(String folderPath) {
- try {
- delAllFile(folderPath); //刪除完裏面所有內容
- String filePath = folderPath;
- filePath = filePath.toString();
- java.io.File myFilePath = new java.io.File(filePath);
- myFilePath.delete(); //刪除空文件夾
- }
- catch (Exception e) {
- System.out.println("刪除文件夾操作出錯");
- e.printStackTrace();
- }
- }
- /**
- * 刪除文件夾裏面的所有文件
- * @param path String 文件夾路徑 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]);//先刪除文件夾裏面的文件
- delFolder(path+"/"+ tempList[i]);//再刪除空文件夾
- }
- }
- }
- /**
- * 復制單個文件
- * @param oldPath String 原文件路徑 如:c:/fqf.txt
- * @param newPath String 復制後路徑 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()) { //文件存在時
- InputStream inStream = new FileInputStream(oldPath); //讀入原文件
- FileOutputStream fs = new FileOutputStream(newPath);
- byte[] buffer = new byte[1444];
- // int length;
- while ( (byteread = inStream.read(buffer)) != -1) {
- // bytesum += byteread; //字節數 文件大小
- // System.out.println(bytesum);
- fs.write(buffer, 0, byteread);
- }
- inStream.close();
- }
- }
- catch (Exception e) {
- System.out.println("復制單個文件操作出錯");
- e.printStackTrace();
- }
- }
- /**
- * 復制整個文件夾內容
- * @param oldPath String 原文件路徑 如:c:/fqf
- * @param newPath String 復制後路徑 如:f:/fqf/ff
- * @return boolean
- */
- public void copyFolder(String oldPath, String newPath) {
- try {
- (new File(newPath)).mkdirs(); //如果文件夾不存在 則建立新文件夾
- 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()){//如果是子文件夾
- copyFolder(oldPath+"/"+file[i],newPath+"/"+file[i]);
- }
- }
- }
- catch (Exception e) {
- System.out.println("復制整個文件夾內容操作出錯");
- e.printStackTrace();
- }
- }
- /**
- * 移動文件到指定目錄
- * @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);
- }
- /**
- * 移動文件到指定目錄
- * @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");
- }
- // 拷貝文件
- 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
- }
java文件和文件夾復制、刪除、移動操作