实现文件夹和文件生成

复制代码 代码如下:
package com.gotobus.common;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;

public class JFile {

public static boolean createFile(String destFileName) {
File file = new File(destFileName);
if(file.exists()) {
return false;
}
if (destFileName.endsWith(File.separator)) {
return false;
}
if(!file.getParentFile().exists()) {
if(!file.getParentFile().mkdirs()) {
return false;
}
}
try {
if (file.createNewFile()) {
return true;
} else {
return false;
}
} catch (IOException e) {
e.printStackTrace();
return false;
}
}

public static boolean createDir(String destDirName) {
File dir = new File(destDirName);
if (dir.exists()) {
return false;
}
if (!destDirName.endsWith(File.separator)) {
destDirName = destDirName + File.separator;
}
if (dir.mkdirs()) {
return true;
} else {
return false;
}
}

public static String createTempFile(String prefix, String suffix, String dirName) {
File tempFile = null;
if (dirName == null) {
try{
tempFile = File.createTempFile(prefix, suffix);
return tempFile.getCanonicalPath();
} catch (IOException e) {
e.printStackTrace();
return null;
}
} else {
File dir = new File(dirName);
if (!dir.exists()) {
if (!JFile.createDir(dirName)) {

return null;
}
}
try {
tempFile = File.createTempFile(prefix, suffix, dir);
return tempFile.getCanonicalPath();
} catch (IOException e) {
e.printStackTrace();
return null;
}
}
}

public static void copyFile(String oldPath, String newPath) {
try {
int bytesum = 0;
int byteread = 0;
File oldfile = new File(oldPath);
if (oldfile.exists()) {
InputStream inStream = new FileInputStream(oldPath);
FileOutputStream fs = new FileOutputStream(newPath);
byte[] buffer = new byte[1444];
int length;
while ( (byteread = inStream.read(buffer)) != -1) {
bytesum += byteread;
fs.write(buffer, 0, byteread);
}
inStream.close();
}
}
catch (Exception e) {
e.printStackTrace();

}
}
}