文件类 复制 删除 工具类
package com.renmai.util;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.util.ArrayList;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipInputStream;
public class FileUtil {
/**
* 写文件
* @param f
* @param content
*/
public static void writeFile(File f,String content){
writeFile(f, content,"utf-8");
}
/**
* 写文件
* @param f
* @param content
*/
public static void writeFile(File f,String content,String encode){
try {
if (!f.exists()) {
f.createNewFile();
}
OutputStreamWriter osw=new OutputStreamWriter(new FileOutputStream(f),encode);
BufferedWriter utput = new BufferedWriter(osw);
utput.write(content);
utput.close();
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 写文件
* @param path
* @param content
*/
public static void writeFile(String path, String content,String encode) {
File f = new File(path);
writeFile(f, content,encode);
}
/**
* 写文件
* @param path
* @param content
*/
public static void writeFile(String path, String content) {
File f = new File(path);
writeFile(f, content,"utf-8");
}
/**
* 读取文件
* @param file
* @return
*/
public static String readFile(File file){
return readFile(file,"UTF-8");
}
/**
* 读取文件
* @param file
* @return
*/
public static String readFile(File file,String encode){
String output = "";
if (file.exists()) {
if (file.isFile()) {
try {
InputStreamReader isr=new InputStreamReader(new FileInputStream(file),encode);
BufferedReader input = new BufferedReader(isr);
StringBuffer buffer = new StringBuffer();
String text;
while ((text = input.readLine()) != null)
buffer.append(text + "\n");
output = buffer.toString();
} catch (IOException ioException) {
System.err.println("File Error！");
}
} else if (file.isDirectory()) {
String[] dir = file.list();
output += "Directory contents：\n";
for (int i = 0; i < dir.length; i++) {
output += dir[i] + "\n";
}
}
} else {
System.err.println("Does not exist！");
}
return output;
}
/**
* 读取文件
* @param fileName
* @return
*/
public static String readFile(String fileName,String encode) {
File file = new File(fileName);
return readFile(file,encode);
}
/**
* 读取文件
* @param fileName
* @return
*/
public static String readFile(String fileName) {
return readFile(fileName,"utf-8");
}
/**
* 获取目录下所有文件
* @param folder
* @return
*/
public static List<File> getFiles(String folder){
File file=new File(folder);
List<File> files=new ArrayList<File>();
if (file.exists()) {
File[] sonFiles=file.listFiles();
if (sonFiles!=null && sonFiles.length>0) {
for (int i = 0; i < sonFiles.length; i++) {
if (!sonFiles[i].isDirectory()) {
files.add(sonFiles[i]);
}
}
}
}
return files;
}
/**
* 获取目录下所有文件夹
* @param folder
* @return
*/
public static List<File> getFolders(String folder){
File file=new File(folder);
List<File> files=new ArrayList<File>();
if (file.exists()) {
File[] sonFiles=file.listFiles();
if (sonFiles!=null && sonFiles.length>0) {
for (int i = 0; i < sonFiles.length; i++) {
if (sonFiles[i].isDirectory()) {
files.add(sonFiles[i]);
}
}
}
}
return files;
}
/**
* 判断是否有子目录
* @param folder
* @return
*/
public static boolean hasSonFolder(String folder){
File file=new File(folder);
return hasSonFolder(file);
}
/**
* 判断是否有子目录
* @param folder
* @return
*/
public static boolean hasSonFolder(File file){
if (file.exists()) {
File[] sonFiles=file.listFiles();
if (sonFiles!=null && sonFiles.length>0) {
for (int i = 0; i < sonFiles.length; i++) {
if (sonFiles[i].isDirectory()) {
return true;
}
}
}
}
return false;
}
/**
* 创建目录
* @param folder
*/
public static void mkdir(String folder){
File file=new File(folder);
if (!file.exists()) {
file.mkdir();
}
}
/**
* 复制文件
* @param src
* @param dst
*/
public static void copy(File src, File dst) {
try {
int BUFFER_SIZE = 32 * 1024;
InputStream in = null;
OutputStream out = null;
try {
in = new FileInputStream(src);
out = new FileOutputStream(dst);
byte[] buffer = new byte[BUFFER_SIZE];
int count;
while ((count = in.read(buffer)) != -1) {
out.write(buffer, 0, count);
}
} finally {
if (null != in) {
in.close();
}
if (null != out) {
out.close();
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 复制文件夹
* @param sourceDir
* @param targetDir
* @throws IOException
*/
public static void copyDirectiory(String sourceDir, String targetDir) throws IOException {
if (new File(sourceDir).exists()) {
// 新建目标目录
File targetFolder=new File(targetDir);
if (!targetFolder.exists()) {
targetFolder.mkdirs();
}
// 获取源文件夹当前下的文件或目录
File[] file = (new File(sourceDir)).listFiles();
for (int i = 0; i < file.length; i++) {
if (file[i].isFile()) {
// 源文件
File sourceFile = file[i];
// 目标文件
File targetFile = new File(new File(targetDir).getAbsolutePath() + File.separator + file[i].getName());
copy(sourceFile, targetFile);
}
if (file[i].isDirectory()) {
// 准备复制的源文件夹
String dir1 = sourceDir + "/" + file[i].getName();
// 准备复制的目标文件夹
String dir2 = targetDir + "/" + file[i].getName();
copyDirectiory(dir1, dir2);
}
}
}
}
/**
* 获取扩展名
*/
public static String getExt(File src){
if (src!=null) {
String name=src.getName();
return name.substring(name.lastIndexOf("."), name.length());
}
return "";
}
/**
* 获取扩展名
*/
public static String getExt(String src){
if (src!=null && src.contains(".")) {
return src.substring(src.lastIndexOf("."), src.length());
}
return "";
}
/**
* 删除指定文件
* @param path
*/
public static void del(String path){
File file=new File(path);
deleteFile(file);
}
/**
* 递归删除文件夹下所有文件
* @param file
*/
public static void deleteFile(File file) {
if (file.exists()) { //判断文件是否存在
if (file.isFile()) { //判断是否是文件
file.delete(); //delete()方法 你应该知道 是删除的意思;
} else if (file.isDirectory()) { //否则如果它是一个目录
File files[] = file.listFiles(); //声明目录下所有的文件 files[];
for (int i = 0; i < files.length; i++) { //遍历目录下所有的文件
deleteFile(files[i]); //把每个文件 用这个方法进行迭代
}
}
file.delete();
}
}
public static void upzip() throws Exception{
File file = new File("D:\\test.zip");//压缩文件
ZipFile zipFile = new ZipFile(file);//实例化ZipFile，每一个zip压缩文件都可以表示为一个ZipFile
//实例化一个Zip压缩文件的ZipInputStream对象，可以利用该类的getNextEntry()方法依次拿到每一个ZipEntry对象
ZipInputStream zipInputStream = new ZipInputStream(new FileInputStream(file));
ZipEntry zipEntry = null;
while ((zipEntry = zipInputStream.getNextEntry()) != null) {
String fileName = zipEntry.getName();
File temp = new File("D:\\un\\" + fileName);
temp.getParentFile().mkdirs();
OutputStream os = new FileOutputStream(temp);
//通过ZipFile的getInputStream方法拿到具体的ZipEntry的输入流
InputStream is = zipFile.getInputStream(zipEntry);
int len = 0;
while ((len = is.read()) != -1)
os.write(len);
os.close();
is.close();
}
zipInputStream.close();
}
public static void main(String[] args) {
try {
upzip();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
文件复制：
FileUtil.copyDirectiory(realPath + "/templet/default", realPath + "/templet/" + templet.getId());
