FileOperate.java
上传用户:u_thks
上传日期:2022-07-31
资源大小:1910k
文件大小:12k
- /*
- * Made In GamVan.com
- * Created on 2005年3月18日, 下午8:37
- */
- package com.gamvan.tools;
- 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(){
-
- }
-
-
- /**
- * 根据含URL的文件地址提取文件名,含扩展名。
- * @param fileNameAndUrl
- * @return
- */
- public static String getFileName(String fileNameAndUrl){
- if(fileNameAndUrl==null) return "";
- String str = "";
- int fileNameStart = fileNameAndUrl.lastIndexOf(File.separator)+1;
- if(fileNameStart==0) return "";
- str = fileNameAndUrl.substring(fileNameStart, fileNameAndUrl.length());
- str = str.trim();
- return str;
- }
-
-
- /**
- * 根据含路径的文件名提取文件扩展名
- * @param fileNameAndPath
- * @return
- */
- public static String getFileExt(String fileNameAndPath){
- if(fileNameAndPath==null) return "";
- //fileNameAndPath = TypeChange.nullOfString(fileNameAndPath);
- String fileext = "";
- int extStart = fileNameAndPath.lastIndexOf(".")+1;
- if(extStart==0){
- return "";
- }
- fileext = fileNameAndPath.substring(extStart,fileNameAndPath.length());
- return fileext;
- }
- /**
- * 读取文本文件内容
- * @param filePathAndName 带有完整绝对路径的文件名
- * @param encoding 文本文件打开的编码方式
- * @return 返回文本文件的内容
- */
- public String readTxt(String filePathAndName,String encoding){
- 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+"n");
- }
- }catch(Exception e){
- str.append(e.toString());
- }finally{
- br.close();
- isr.close();
- fs.close();
- }
- st = str.toString();
- }catch(IOException es){
- st = "";
- }
- return st;
- }
- /**
- * 新建目录
- * @param folderPath 目录
- * @return 返回目录创建后的路径
- */
- 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 = "创建目录操作出错";
- }
- return txt;
- }
-
- /**
- * 多级目录创建
- * @param folderPath 准备要在本级目录下创建新目录的目录路径 例如 c:myf
- * @param paths 无限级目录参数,各级目录以单数线区分 例如 a|b|c
- * @return 返回创建文件后的路径 例如 c:myfabc
- */
- 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(i!=0&&txts.lastIndexOf(File.separator)!=-1){
- txts = createFolder(txts + File.separator + txt);
- }else{
- txts = createFolder(txts + txt);
- }
- }
- txts+=File.separator;
- }catch(Exception e){
- message = "创建目录操作出错!";
- }
- return txts;
- }
-
- /**
- * 新建文件
- * @param filePathAndName 文本文件完整绝对路径及文件名
- * @param fileContent 文本文件内容
- * @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 = "创建文件操作出错";
- }
- }
- /**
- * 有编码方式的文件创建
- * @param filePathAndName 文本文件完整绝对路径及文件名
- * @param fileContent 文本文件内容
- * @param encoding 编码方式 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 = "创建文件操作出错";
- }
- }
- /**
- * 删除文件
- * @param filePathAndName 文本文件完整绝对路径及文件名
- * @return Boolean 成功删除返回true遭遇异常返回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+"<br>删除文件操作出错");
- }
- }
- catch (Exception e) {
- message = e.toString();
- }
- return bea;
- }
-
- /**
- * 删除文件夹
- * @param folderPath 文件夹完整绝对路径
- * @return
- */
- public void delFolder(String folderPath) {
- try {
- delAllFile(folderPath); //删除完里面所有内容
- String filePath = folderPath;
- filePath = filePath.toString();
- java.io.File myFilePath = new java.io.File(filePath);
- myFilePath.delete(); //删除空文件夹
- }
- catch (Exception e) {
- message = ("删除文件夹操作出错");
- }
- }
-
-
- /**
- * 删除指定文件夹下所有文件
- * @param path 文件夹完整绝对路径
- * @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 + File.separator + tempList[i]);//先删除文件夹里面的文件
- delFolder(path + File.separator + tempList[i]);//再删除空文件夹
- bea = true;
- }
- }
- return bea;
- }
- /**
- * 复制单个文件
- * @param oldPathFile 准备复制的文件源
- * @param newPathFile 拷贝到新绝对路径带文件名
- * @return
- */
- public void copyFile(String oldPathFile, String newPathFile) {
- try {
- int bytesum = 0;
- int byteread = 0;
- File oldfile = new File(oldPathFile);
- if (oldfile.exists()) { //文件存在时
- InputStream inStream = new FileInputStream(oldPathFile); //读入原文件
- FileOutputStream fs = new FileOutputStream(newPathFile);
- byte[] buffer = new byte[1444];
- while((byteread = inStream.read(buffer)) != -1){
- bytesum += byteread; //字节数 文件大小
- System.out.println(bytesum);
- fs.write(buffer, 0, byteread);
- }
- inStream.close();
- fs.close();
- }
- }catch (Exception e) {
- message = ("复制单个文件操作出错");
- }
- }
-
- /**
- * 复制整个文件夹的内容
- * @param oldPath 准备拷贝的目录
- * @param newPath 指定绝对路径的新目录
- * @return
- */
- public void copyFolder(String oldPath, String newPath) {
- try {
- new File(newPath).mkdirs(); //如果文件夹不存在 则建立新文件夹
- 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 + File.separator +
- (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()){//如果是子文件夹
- copyFolder(oldPath+File.separator+file[i],newPath+File.separator+file[i]);
- }
- }
- }catch (Exception e) {
- message = "复制整个文件夹内容操作出错";
- }
- }
- /**
- * 移动文件
- * @param oldPath
- * @param newPath
- * @return
- */
- public void moveFile(String oldPath, String newPath) {
- copyFile(oldPath, newPath);
- delFile(oldPath);
- }
-
- /**
- * 移动目录
- * @param oldPath
- * @param newPath
- * @return
- */
- public void moveFolder(String oldPath, String newPath) {
- copyFolder(oldPath, newPath);
- delFolder(oldPath);
- }
- public String getMessage(){
- return this.message;
- }
- }
-