import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.StringTokenizer;
public class FileOperate {
??? private String message;
??? public FileOperate() {
??? }

??? /**
???? * 讀取文本文件內容
???? * @param filePathAndName 帶有完整絕對路徑的文件名
???? * @param encoding 文本文件打開的編碼方式
???? * @return 返回文本文件的內容
???? */
??? public String readTxt(String filePathAndName,String encoding) throws IOException{
??? ?encoding = encoding.trim();
??? ?StringBuffer str = new StringBuffer("");
??? ?String st = "";
??? ?try{
???? ?FileInputStream fs = new FileInputStream(filePathAndName);
???? ?InputStreamReader isr;
???? ?if(encoding.equals("")){
???? ??isr = new InputStreamReader(fs);
???? ?}else{
???? ??isr = new InputStreamReader(fs,encoding);
???? ?}
???? ?BufferedReader br = new BufferedReader(isr);
???? ?try{
???? ??String data = "";
???? ??while((data = br.readLine())!=null){
???? ????str.append(data+" ");
???? ??}
???? ?}catch(Exception e){
???? ??str.append(e.toString());
???? ?}
???? ?st = str.toString();
??? ?}catch(IOException es){
??? ??st = "";
??? ?}
??? ?return st;??? ?
??? }

??? /**
???? * 新建目錄
???? * @param folderPath 目錄
???? * @return 返回目錄創建后的路徑
???? */
??? public String createFolder(String folderPath) {
??????? String txt = folderPath;
??????? try {
??????????? java.io.File myFilePath = new java.io.File(txt);
??????????? txt = folderPath;
??????????? if (!myFilePath.exists()) {
??????????????? myFilePath.mkdir();
??????????? }
??????? }
??????? catch (Exception e) {
??????????? message = "創建目錄操作出錯";
??????? }
??????? return txt;
??? }
???
??? /**
???? * 多級目錄創建
???? * @param folderPath 準備要在本級目錄下創建新目錄的目錄路徑 例如 c:myf
???? * @param paths 無限級目錄參數，各級目錄以單數線區分 例如 a|b|c
???? * @return 返回創建文件后的路徑 例如 c:myfac
???? */
??? public String createFolders(String folderPath, String paths){
??????? String txts = folderPath;
??????? try{
??????????? String txt;
??????????? txts = folderPath;
??????????? StringTokenizer st = new StringTokenizer(paths,"|");
??????????? for(int i=0; st.hasMoreTokens(); i++){
??????????????????? txt = st.nextToken().trim();
??????????????????? if(txts.lastIndexOf("/")!=-1){
??????????????????????? txts = createFolder(txts+txt);
??????????????????? }else{
??????????????????????? txts = createFolder(txts+txt+"/");???
??????????????????? }
??????????? }
?????? }catch(Exception e){
?????????? message = "創建目錄操作出錯！";
?????? }
??????? return txts;
??? }

???
??? /**
???? * 新建文件
???? * @param filePathAndName 文本文件完整絕對路徑及文件名
???? * @param fileContent 文本文件內容
???? * @return
???? */
??? public void createFile(String filePathAndName, String fileContent) {
??? ?
??????? try {
??????????? String filePath = filePathAndName;
??????????? filePath = filePath.toString();
??????????? File myFilePath = new File(filePath);
??????????? if (!myFilePath.exists()) {
??????????????? myFilePath.createNewFile();
??????????? }
??????????? FileWriter resultFile = new FileWriter(myFilePath);
??????????? PrintWriter myFile = new PrintWriter(resultFile);
??????????? String strContent = fileContent;
??????????? myFile.println(strContent);
??????????? myFile.close();
??????????? resultFile.close();
??????? }
??????? catch (Exception e) {
??????????? message = "創建文件操作出錯";
??????? }
??? }

??? /**
???? * 有編碼方式的文件創建
???? * @param filePathAndName 文本文件完整絕對路徑及文件名
???? * @param fileContent 文本文件內容
???? * @param encoding 編碼方式 例如 GBK 或者 UTF-8
???? * @return
???? */
??? public void createFile(String filePathAndName, String fileContent, String encoding) {
??? ?
??????? try {
??????????? String filePath = filePathAndName;
??????????? filePath = filePath.toString();
??????????? File myFilePath = new File(filePath);
??????????? if (!myFilePath.exists()) {
??????????????? myFilePath.createNewFile();
??????????? }
??????????? PrintWriter myFile = new PrintWriter(myFilePath,encoding);
??????????? String strContent = fileContent;
??????????? myFile.println(strContent);
??????????? myFile.close();
??????? }
??????? catch (Exception e) {
??????????? message = "創建文件操作出錯";
??????? }
??? }

??? /**
???? * 刪除文件
???? * @param filePathAndName 文本文件完整絕對路徑及文件名
???? * @return Boolean 成功刪除返回true遭遇異常返回false
???? */
??? public boolean delFile(String filePathAndName) {
??? ?boolean bea = false;
??????? try {
??????????? String filePath = filePathAndName;
??????????? File myDelFile = new File(filePath);
??????????? if(myDelFile.exists()){
??????????? ?myDelFile.delete();
??????????? ?bea = true;
??????????? }else{
??????????? ?bea = false;
??????????? ?message = (filePathAndName+"
刪除文件操作出錯");
??????????? }
??????? }
??????? catch (Exception e) {
??????????? message = e.toString();
??????? }
??????? return bea;
??? }
???

??? /**
???? * 刪除文件夾
???? * @param folderPath 文件夾完整絕對路徑
???? * @return
???? */
??? public void delFolder(String folderPath) {
??????? try {
??????????? delAllFile(folderPath); //刪除完里面所有內容
??????????? 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) {
??????????? message = ("刪除文件夾操作出錯");
??????? }
??? }
???
???
??? /**
???? * 刪除指定文件夾下所有文件
???? * @param path 文件夾完整絕對路徑
???? * @return
???? * @return
???? */
??? public boolean delAllFile(String path) {
??? ?boolean bea = false;
??????? File file = new File(path);
??????? if (!file.exists()) {
??????????? return bea;
??????? }
??????? if (!file.isDirectory()) {
??????????? return bea;
??????? }
??????? 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]);//先刪除文件夾里面的文件
??????????????? delFolder(path+"/"+ tempList[i]);//再刪除空文件夾
??????????????? bea = true;
??????????? }
??????? }
??????? return bea;
??? }

??? /**
???? * 復制單個文件
???? * @param oldPathFile 準備復制的文件源
???? * @param newPathFile 拷貝到新絕對路徑帶文件名
???? * @return
???? */
??? public void copyFile(String oldPathFile, String newPathFile) {
??????? try {
??????????? int bytesum = 0;
??????????? int byteread = 0;
??????????? File oldfile = new File(oldPathFile);
??????????? if (oldfile.exists()) { //文件存在時
??????????????? InputStream inStream = new FileInputStream(oldPathFile); //讀入原文件
??????????????? FileOutputStream fs = new FileOutputStream(newPathFile);
??????????????? byte[] buffer = new byte[1444];
??????????????? 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) {
??????????? message = ("復制單個文件操作出錯");
??????? }
??? }
???

??? /**
???? * 復制整個文件夾的內容
???? * @param oldPath 準備拷貝的目錄
???? * @param newPath 指定絕對路徑的新目錄
???? * @return
???? */
??? 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) {
??????????? message = "復制整個文件夾內容操作出錯";
??????? }
??? }

??? /**
???? * 移動文件
???? * @param oldPath
???? * @param newPath
???? * @return
???? */
??? public void moveFile(String oldPath, String newPath) {
??????? copyFile(oldPath, newPath);
??????? delFile(oldPath);
??? }
???

??? /**
???? * 移動目錄
???? * @param oldPath
???? * @param newPath
???? * @return
???? */
??? public void moveFolder(String oldPath, String newPath) {
??????? copyFolder(oldPath, newPath);
??????? delFolder(oldPath);
??? }
??? public String getMessage(){
??????? return this.message;
??? }
}

地震讓大伙知道：居安思危，才是生存之道。

<bdo id="qqcis"></bdo>