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Posted on 2009-05-12 18:16 Gavin.lee 阅读(423) 评论(0) 编辑 收藏 所属分类: Log && File Operate
此操作类正在完善中……
 package com.Gavin.io;
  /** *//**
 * 文件操作类
* @author Gavin.lee
* @date 2009-05-04 12:17pm
 */
import java.io.BufferedReader;
import java.io.BufferedWriter;
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.InputStreamReader;
import java.io.PrintWriter;
import java.util.StringTokenizer;
public class FileOperator  {
private String message;
  /** *//**
* 读取文件内容
* @param filePathAndName
* 带有完整绝对路径的文件名
* @param encoding
* 文件打开的编码方式
* @return 返回文本文件的内容
 */
public String readFileByEncoding(String filePathAndName, String encoding) {
StringBuffer str = new StringBuffer("");
String st = "";
try {
FileInputStream fs = new FileInputStream(filePathAndName);
InputStreamReader isr;
if (encoding == null || encoding.trim().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;
}
/** *//**
* 按行读取指定文件，也可计算文件行数
*
* @param filePath
* @param fileName
*/
public void readLineFile(String filePath, String fileName, String encoding) {
try {
BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(filePath + fileName),encoding));
String line = "";
String result = "";
int i = 0;
while ((line = br.readLine()) != null) {
result = result + line + "\r\n";
i++;
}
System.out.println(result);
System.out.println("该文件行数：" + i);
br.close();
// fr.close();
} catch (IOException e) {
e.printStackTrace();
}
}
/** *//**
* 完全读取指定目录下的文件
*
* @param filePath
* @param fileName
*/
public void readAllFile(String filePath, String fileName) {
try {
FileReader fr = new FileReader(filePath + fileName);
int count = fr.read();
while (count != -1) {
System.out.print((char) count);
count = fr.read();
if (count == 13) {
fr.skip(1);
}
}
fr.close();
} catch (Exception e) {
e.printStackTrace();
}
}
/** *//**
* 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 {
File myFilePath = new 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:myfa c
*/
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 = "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 + "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 + "/" + tempList[i]);// 先删除文件夹里面的文件
delFolder(path + "/" + 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();
}
} 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
+ "/" + (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[i], newPath + "/" + 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;
}
/** *//**
* 向 指定文件输入数据，该文件存在时重洗，不存在时创建。
*
* @param filename
* @param fin
*/
public void fwriter(String filename, String fin) {
try {
PrintWriter out = new PrintWriter(new BufferedWriter(
new FileWriter(filename)), true);
out.println(fin);
out.flush();
out.close();
} catch (IOException e) {
e.printStackTrace();
}
}
// up
public void writeFile(String filePath, String fileName, String args) {
try {
FileWriter fw = new FileWriter(filePath + fileName);
fw.write(args);
fw.close();
} catch (IOException e) {
e.printStackTrace();
}
}
/** *//**
* 以数组形式向文件中输入数据
*
* @param filePath
* @param fileName
* @param args
*/
public void writeFile(String filePath, String fileName, String[] args) {
try {
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();
}
fw.close();
out.close();
} catch (IOException e) {
e.printStackTrace();
}
}
/** *//**
* 创建、删除文件，有则删除，无则创建
*
* @param filePath
* @param fileName
* @return
*/
public boolean createAndDeleteFile(String filePath, String fileName) {
boolean result = false;
File file = new File(filePath, fileName);
if (file.exists()) {
file.delete();
result = true;
System.out.println("删除文件成功");
} else {
try {
file.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}
result = true;
System.out.println("创建文件成功");
}
return result;
}
/** *//**
* 在指定绝对路径的目录下创建目录
*
* @param filePath
* @param folderName
*/
public synchronized void createFolder(String filePath, String folderName) {
try {
String[] st = folderName.split("/");
for (int i = 0; i < st.length; i++) {
filePath = filePath + st[i] + "/";
File file = new File(filePath);
File parentFile = new File(file.getParent());
if (!parentFile.exists()) {
parentFile.mkdir();
}
if (!file.exists()) {
file.mkdir();
}
}
} catch (Exception ex) {
System.out.println("CreateAndDeleteFolder is error:" + ex);
}
}
/** *//**
* 创建、删除目录
*
* @param folderName
* @param filePath
* @return
*/
public boolean createAndDeleteFolder(String folderName, String filePath) {
boolean result = false;
try {
File file = new File(filePath + folderName);
if (file.exists()) {
file.delete();
System.out.println("目录已经存在，已删除!");
result = true;
} else {
file.mkdir();
System.out.println("目录不存在，已经建立!");
result = true;
}
} catch (Exception ex) {
result = false;
System.out.println("CreateAndDeleteFolder is error:" + ex);
}
return result;
}
/** *//**
* 指定目录下的文件。
*
* @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());
}
}
}
/** *//**
* 判断文件是否为空
*
* @param args
*/
public boolean fileIsNull(String filePath, String fileName) {
boolean result = false;
try {
FileReader fr = new FileReader(filePath + fileName);
if (fr.read() == -1) {
result = true;
System.out.println(fileName + "该文件中没有数据");
} else {
System.out.println(fileName + "该文件中有数据");
}
fr.close();
} catch (IOException e) {
e.printStackTrace();
}
return result;
}
public static void main(String args[]) {
// System.out.println(new
// FileOperate().readTxt("E:\\Gavin_workspace\\Gavin\\src\\com\\Gavin\\tools\\util\\FileOperate.java",
// "gbk"));
// System.out.println(new
// FileOperate().createFolder("E:\\Gavin_workspace\\Gavin\\src\\com\\Gavin\\tools\\util\\floder"));
// new FileOperator().createFile(
// "E:\\Gavin_workspace\\Gavin\\WebRoot\\WriteLog.txt",
// "testfile"); // succ
// new FileOperator().createFile(
// "E:\\Gavin_workspace\\Gavin\\WebRoot\\WriteLog\\WriteLog.txt",
// "testfile"); // fail
FileOperator fo = new FileOperator();
// fo.readFileByEncoding("d:/test", "GBK");
fo.readLineFile("d:/", "新建 文本文档.txt", "gb2312");
}
}
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