Java文件复制删除操作合集

import java.io.*;

public class FileOperate { 
public FileOperate() { 
}

/** 
* 新建目录 
* @param folderPath String 如 c:/fqf 
* @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( "新建目录操作出错 "); 
e.printStackTrace(); 
} 
}

/** 
* 新建文件 
* @param filePathAndName String 文件路径及名称 如c:/fqf.txt 
* @param fileContent String 文件内容 
* @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( "新建目录操作出错 "); 
e.printStackTrace();

}

}

/** 
* 删除文件 
* @param filePathAndName String 文件路径及名称 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();

} 
catch (Exception e) { 
System.out.println( "删除文件操作出错 "); 
e.printStackTrace();

}

}

/** 
* 删除文件夹 
* @param filePathAndName String 文件夹路径及名称 如c:/fqf 
* @param fileContent String 
* @return boolean 
*/ 
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) { 
System.out.println( "删除文件夹操作出错 "); 
e.printStackTrace();

}

}

/** 
* 删除文件夹里面的所有文件 
* @param path String 文件夹路径 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 String 原文件路径 如：c:/fqf.txt 
* @param newPath String 复制后路径 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()) { //文件存在时 
InputStream inStream = new FileInputStream(oldPath); //读入原文件 
FileOutputStream fs = new FileOutputStream(newPath); 
byte[] buffer = new byte[1444]; 
int length; 
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) { 
System.out.println( "复制单个文件操作出错 "); 
e.printStackTrace();

}

}

/** 
* 复制整个文件夹内容 
* @param oldPath String 原文件路径 如：c:/fqf 
* @param newPath String 复制后路径 如：f:/fqf/ff 
* @return boolean 
*/ 
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) { 
System.out.println( "复制整个文件夹内容操作出错 "); 
e.printStackTrace();

}

}

/** 
* 移动文件到指定目录 
* @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);

}

/** 
* 移动文件到指定目录 
* @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);

} 
}