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Posted on 2009-07-05 18:23 Gavin.lee 閱讀(213) 評論(0) 編輯 收藏 所屬分類: Log && File Operate
 package com.Gavin.tools;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
  public class FileOperate  {
 // public static void main(String[] args) throws IOException {
// FileOperate f = new FileOperate();
// // System.out.println(f.readFile("f:\\LinkFile.java"));
// f.fileIsNull("D:\\java\\", "ejb");
// // f.readLineFile("D:\\java\\","TestFile.txt");
// // System.out.println(f.fileIsNull("f:\\","122.txt"));
// // f.readFolderByFile("F:\\Login"); //不區分大小寫
// // System.out.println(f.createAndDeleteFolder("ss","f:\\"));
// // System.out.println(f.createAndDeleteFile("f:\\ss\\","TestFile.dat"));
// // f.createAndDeleteFolder("1","D:\\java\\");
// String ss[] = new String[50]; // 定義對象數組
// for (int i = 0; i < ss.length; i++) {
// ss[i] = "信息技術和互聯網(計算機軟硬件,通訊) " + i;
// }
// f.writeFile("D:\\java\\", "TestFile.txt", ss);
//
// }
  /** *//**
* 文件的寫入
*
* @param filePath(文件路徑)
* @param fileName(文件名)
* @param args[]
* @throws IOException
 */
public void writeFile(String filePath, String fileName, String[] args)
throws IOException {
FileWriter fw = new FileWriter(filePath + fileName);
PrintWriter out = new PrintWriter(fw);
for (int i = 0; i < args.length; i++) {
out.write(args[i]);
out.println();
// out.flush();
}
System.out.println("寫入成功！");
fw.close();
out.close();
}
/** *//**
* 文件的寫入
*
* @param filePath(文件路徑)
* @param fileName(文件名)
* @param args
* @throws IOException
*/
public void writeFile(String filePath, String fileName, String args)
throws IOException {
FileWriter fw = new FileWriter(filePath + fileName);
fw.write(args);
fw.close();
}
/** *//**
* 創建與刪除文件
*
* @param filePath
* @param fileName
* @return 創建成功返回true
* @throws IOException
*/
public boolean createAndDeleteFile(String filePath, String fileName)
throws IOException {
boolean result = false;
File file = new File(filePath, fileName);
if (file.exists()) {
if (file.isFile()) {
file.delete();
result = true;
System.out.println("文件已經刪除！");
} else {
System.out.println("對不起,該路徑為目錄！");
}
} else {
file.createNewFile(); // jdk5.0的新方法
result = true;
System.out.println("文件已經創建！");
}
return result;
}
/** *//**
* 創建和刪除目錄
*
* @param folderName
* @param filePath
* @return 刪除成功返回true
*/
public boolean createAndDeleteFolder(String folderName, String filePath) {
boolean result = false;
try {
File file = new File(filePath + folderName);
if (file.exists()) {
if (file.isDirectory()) {
file.delete();
System.out.println("目錄已經存在，已刪除!");
result = true;
} else {
System.out.println("對不起,該路徑為文件！");
}
} else {
file.mkdir();
System.out.println("目錄不存在，已經建立!");
result = true;
}
} catch (Exception ex) {
result = false;
System.out.println("CreateAndDeleteFolder is error:" + ex);
}
return result;
}
/** *//**
* 輸出目錄中的所有文件及目錄名字
*
* @param filePath
*/
public void readFolderByFile(String filePath) {
File file = new File(filePath);
File[] tempFile = file.listFiles();
for (int i = 0; i < tempFile.length; i++) {
if (tempFile[i].isFile()) {
System.out.println("File : " + tempFile[i].getName());
}
if (tempFile[i].isDirectory()) {
System.out.println("Directory : " + tempFile[i].getName());
}
}
}
/** *//**
* 檢查文件中是否為一個空
*
* @param filePath
* @param fileName
* @return 為空返回true
* @throws IOException
*/
public boolean fileIsNull(String filePath, String fileName)
throws IOException {
boolean result = false;
FileReader fr = new FileReader(filePath + fileName);
if (fr.read() == -1) {
result = true;
System.out.println(fileName + " 文件中沒有數據!");
} else {
System.out.println(fileName + " 文件中有數據!");
}
fr.close();
return result;
}
/** *//**
* 讀取文件中的所有內容
*
* @param filePath
* @param fileName
* @throws IOException
*/
public void readAllFile(String filePath, String fileName)
throws IOException {
FileReader fr = new FileReader(filePath + fileName);
// PrintWriter pr=new PrintWriter(fr);
// pr.print
int count = fr.read();
while (count != -1) {
System.out.print((char) count);
count = fr.read();
// System.out.println();
if (count == 13) {
fr.skip(1);
System.out.print("跳過!");
}
}
System.out.println();
fr.close();
}
/** *//**
* 一行一行的讀取文件中的數據
*
* @param filePath
* @param fileName
* @throws IOException
*/
public void readLineFile(String filePath, String fileName)
throws IOException {
FileReader fr = new FileReader(filePath + fileName);
BufferedReader br = new BufferedReader(fr);
String line = br.readLine();
while (line != null) {
System.out.println(line);
line = br.readLine();
}
br.close();
fr.close();
}
/** *//**
* @see 新建目錄,通用性不好，只能建立一級
* @param folderPath
* String 如 c:/floder
* @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();
}
}
public static void main(String args[]) {
FileOperate fo = new FileOperate();
fo.newFolder("c:/test");
System.out.println(fo.getProjectRootPath());
}
/** *//**
* @see 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();
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);
resultFile.close();
} catch (Exception e) {
System.out.println("新建文件操作出錯");
e.printStackTrace();
}
}
/** *//**
* @see 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();
System.out.println(myDelFile + "\\文件存在，已刪除。");
} catch (Exception e) {
System.out.println("刪除文件操作出錯");
e.printStackTrace();
}
}
/** *//**
* @see 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) {
System.out.println("刪除文件夾操作出錯");
e.printStackTrace();
}
}
/** *//**
* @see 刪除文件夾里面的所有文件
* @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]);// 先刪除文件夾里面的文件
delFolder(path + "/" + tempList[i]);// 再刪除空文件夾
}
}
}
/** *//**
* @see 復制單個文件
* @param oldPath
* String 原文件路徑 如：c:/fqf.txt
* @param newPath
* String 復制后路徑 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 = 0;
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();
}
}
/** *//**
* @see 復制整個文件夾內容
* @param oldPath
* String 原文件路徑 如：c:/fqf
* @param newPath
* String 復制后路徑 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();
}
}
/** *//**
* @see 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);
}
/** *//**
* @see 獲得系統根目錄絕對路徑
* @return D:/MyWorkSpace/tools/WebRoot/
*/
public String getProjectRootPath() {
String sysPath = this.getClass().getResource("/").getPath();
// 對路徑進行修改
sysPath = sysPath.substring(1, sysPath.length() - 16);
return sysPath;
}
 }
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