java文件处理组件
java文件处理组件
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import com.ultrapower.eoms.common.RecordLog;
/**
* 文件处理组件
* @version Apr 21, 2010 5:50:00 PM
*/
public class FileOperUtil {
/**
* 删除目录下的所有文件
* @param path 文件夹路径
* @exception Exception
*/
public static void deleteFile(String path) throws Exception {
File file = new File(path);
if (file.isDirectory()) {
File[] files = file.listFiles();
int len = files.length ;
for (int i = 0; i < len; i++) {
deleteFile(files[i].getAbsolutePath());
}
}
file.delete();
}
/**
* 新建目录
* @param folderPath 文件夹路径 例如:c:/test
*/
public static 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) {
RecordLog.printLog("新建目录,"+folderPath+ ",出错,"+e.getMessage(), RecordLog.LOG_LEVEL_ERROR);
e.printStackTrace();
}
}
/**
* 新建文件
* @param filePathAndName 文件路径 例如:c:/test/a.txt
* @param fileContent 文件的内容
* @throws IOException
*/
public static void newFile(String filePathAndName, String fileContent) throws IOException {
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();
}
/**
* 删除文件
*
* @param filePathAndName
* 文件路径 例如:c:/test/a.txt
*/
public static 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) {
RecordLog.printLog("删除文件,"+filePathAndName+ ",出错,"+e.getMessage(), RecordLog.LOG_LEVEL_ERROR);
e.printStackTrace();
}
}
/**
* 删除文件夹
* @param folderPath 文件夹路径 例如:c:/test
* @return 如果删除成功,则返回 true;否则返回 false。
*/
public static boolean delFolder(String folderPath) {
boolean flag = false;
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);
flag = myFilePath.delete(); //删除空文件夹
} catch (Exception e) {
RecordLog.printLog("删除文件夹,"+folderPath+",出错," +e.getMessage(), RecordLog .LOG_LEVEL_ERROR);
e.printStackTrace();
}
return flag;
}
/**
* 删除文件夹里面的所有文件
* @param path 文件夹路径 例如:c:/test
*/
public static 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]); // 先删除文件夹里面的文件
delFolder(path + "/" + tempList[i]); // 再删除空文件夹
}
}
}
/**
* 复制单个文件
* @param oldPath 文件夹路径 例如:c:/test/a.txt
* @param newPath 文件夹路径 例如:c:/test/a.txt
* @throws IOException
*/
public static void copyFile(String oldPath, String newPath) throws IOException {
int bytesum = 0;
int byteread = 0;
File oldfile = new File(oldPath);
if (oldfile.exists()) { // 文件存在时
InputStream inStream = new FileInputStream(oldPath); // 读入原文件
FileOutputStream fs = new FileOutputStream(newPath);
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();
}
}
/**
* 复制整个文件夹内容
* @param oldPath 文件夹路径 例如:c:/test
* @param newPath 文件夹路径 例如:c:/abc
*/
public static 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) {
RecordLog.printLog("复制整个文件夹内容操作出错," +e.getMessage(), RecordLog .LOG_LEVEL_ERROR);
e.printStackTrace();
}
}
/**
* 移动文件到指定目录
* @param oldPath 文件夹路径 例如:c:/test/a.txt
* @param newPath 文件夹路径 例如:c:/abc/a.txt
* @throws IOException
*/
public static void moveFile(String oldPath, String newPath) throws IOException {
copyFile(oldPath, newPath);
delFile(oldPath);
}
/**
* 移动文件到指定目录
* @param oldPath String 如：c:/test
* @param newPath String 如：d:/abc
*/
public static void moveFolder(String oldPath, String newPath) {
copyFolder(oldPath, newPath);
delFolder(oldPath);
}
public static void main(String[] args){
rename("d:/aaa", "av.xml","ne.xml" );
}
public static boolean rename(String filepath,String srcname,String destname){
boolean flag = false;
File f = new File(filepath+File.separator+srcname);
String c = f.getParent();
File mm = new File(c + File.separator + destname);
if (f.renameTo(mm))
flag = true;
return flag;
}
}
