ftp上传下载和zip压缩解压操作
package com.cmlsoft.bs.gdxm.ftpupdown;import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.Enumeration;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipOutputStream;
import sun.net.TelnetInputStream;
import sun.net.TelnetOutputStream;
import sun.net.ftp.FtpClient;
public class FtpZipOption {
public static void downLoadZipFile() throws Exception {
String wantFileName = getWantFileName() ;//得到此时该下载的文件名
String[] localFileNameArray = getLocalFileNameArray("D:\\download") ;//得到所有已经下载的文件名
if(ifToDownLoadFile(wantFileName,localFileNameArray)){//判断是否需要下载
String str; //输出信息字符串
FtpClient ftp = new FtpClient("192.168.39.189"); //根据服务器ip建立连接
str = ftp.getResponseString(); //获得响应信息
System.out.println("连接服务器:" + str);
ftp.login("test", "test"); //根据用户名和密码登录服务器
str = ftp.getResponseString();
System.out.println("登录:"+str);
ftp.cd("downziptest\\downzip"); //打开服务器上的文件目录
str = ftp.getResponseString() ;
System.out.println("打开服务器目录:"+str) ;
ftp.binary();//转化为二进制的文件
TelnetInputStream ftpIn = ftp.get(wantFileName+".zip");//找到要读取的文件
byte[] buf = new byte;
int bufsize = 0;
String toLocalPath = "D:\\download\\"+wantFileName+".zip" ;
FileOutputStream ftpOut = new FileOutputStream(toLocalPath);
while ((bufsize = ftpIn.read(buf, 0, buf.length)) != -1) {
ftpOut.write(buf, 0, bufsize);
}
ftpOut.close();
ftpIn.close();
System.out.println("下载"+wantFileName+".zip完成!") ;
}else{
System.out.println(wantFileName+".zip在本地已经存在,不予下载") ;
}
}
// 上传文件;并返回上传文件的信息
private static String upLoadZipToServer(String filename) throws Exception {
String str; //输出信息字符串
String timeStr = getNowTime();//获得当前时间
String recordStr = "上传时间:" + timeStr + "\r\n";//信息记录字符串
FtpClient ftp = new FtpClient("192.168.39.189"); //根据服务器ip建立连接
str = ftp.getResponseString(); //获得响应信息
System.out.println(str);
recordStr += "连接服务器:" + str + "\r\n";
ftp.login("test", "test"); //根据用户名和密码登录服务器
str = ftp.getResponseString();
System.out.println(str);
recordStr += "登录:" + str + "\r\n";
ftp.cd("uptest"); //打开服务器上的test文件夹
ftp.binary();//转化为二进制的文件
str = ftp.getResponseString();
System.out.println(str);
FileInputStream is = null ;
TelnetOutputStream os = null ;
try {
//"upftpfile"用ftp上传后的新文件名
os = ftp.put("uptest.zip");
File file_in = new java.io.File(filename);
if (file_in.length()==0) {
return "上传文件为空!";
}
is = new FileInputStream(file_in);
byte[] bytes = new byte;
int c;
while ((c = is.read(bytes))!= -1) {
os.write(bytes, 0, c);
}
}finally {
if (is != null) {
is.close();
}
if (os != null) {
os.close();
}
}
return "上传文件成功!";
}
public static void fileToZip(String sourceFile, String toFolerName) throws Exception {
List fileList = getSubFiles(new File(sourceFile)); //得到待压缩的文件夹的所有内容
ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(
toFolerName));
ZipEntry ze = null;
byte[] buf = new byte;
int readLen = 0;
for (int i = 0; i < fileList.size(); i++) { //遍历要压缩的所有子文件
File file = (File) fileList.get(i);
System.out.println("压缩到的文件名:" + file.getName());
ze = new ZipEntry(getAbsFileName(sourceFile, file));
ze.setSize(file.length());
ze.setTime(file.lastModified());
zos.putNextEntry(ze);
InputStream is = new BufferedInputStream(new FileInputStream(file));
while ((readLen = is.read(buf, 0, 1024)) != -1) {
zos.write(buf, 0, readLen);
}
is.close();
}
zos.close();
System.out.println("压缩完成!");
}
public static void zipToFile(String sourceFile, String toFolder) throws Exception {
String toDisk = toFolder;//接收解压后的存放路径
ZipFile zfile = new ZipFile(sourceFile);//连接待解压文件
System.out.println("要解压的文件是:" + zfile.getName());
Enumeration zList = zfile.entries();//得到zip包里的所有元素
ZipEntry ze = null;
byte[] buf = new byte;
while (zList.hasMoreElements()) {
ze = (ZipEntry) zList.nextElement();
if (ze.isDirectory()) {
System.out.println("打开zip文件里的文件夹:" + ze.getName()
+ " skipped...");
continue;
}
System.out.println("zip包里的文件: " + ze.getName() + "\t" + "大小为:"
+ ze.getSize() + "KB");
//以ZipEntry为参数得到一个InputStream，并写到OutputStream中
OutputStream outputStream = new BufferedOutputStream(
new FileOutputStream(getRealFileName(toDisk, ze.getName())));
InputStream inputStream = new BufferedInputStream(zfile
.getInputStream(ze));
int readLen = 0;
while ((readLen = inputStream.read(buf, 0, 1024)) != -1) {
outputStream.write(buf, 0, readLen);
}
inputStream.close();
outputStream.close();
System.out.println("已经解压出:" + ze.getName());
}
zfile.close();
}
private static String getAbsFileName(String baseDir, File realFileName) {
File real = realFileName;
File base = new File(baseDir);
String ret = real.getName();
while (true) {
real = real.getParentFile();
if (real == null)
break;
if (real.equals(base))
break;
else
ret = real.getName() + "/" + ret;
}
return ret;
}
private static List<File> getSubFiles(File baseDir) {
List<File> ret = new ArrayList<File>();
File[] tmp = baseDir.listFiles();
for (int i = 0; i < tmp.length; i++) {
if (tmp.isFile())
ret.add(tmp);
if (tmp.isDirectory())
ret.addAll(getSubFiles(tmp));
}
return ret;
}
private static File getRealFileName(String zippath, String absFileName){
String[] dirs = absFileName.split("/", absFileName.length());
File ret = new File(zippath);// 创建文件对象
if (dirs.length > 1) {
for (int i = 0; i < dirs.length - 1; i++) {
ret = new File(ret, dirs);
}
}
if (!ret.exists()) {// 检测文件是否存在
ret.mkdirs();// 创建此抽象路径名指定的目录
}
ret = new File(ret, dirs);// 根据 ret 抽象路径名和 child 路径名字符串创建一个新 File 实例
return ret;
}
private static List getServerFileNameList(FtpClient ftp,String folderName) throws Exception{
BufferedReader dr = new BufferedReader(new InputStreamReader(ftp.nameList(folderName)));
List<String> list = new ArrayList<String>() ;
String s;
while((s=dr.readLine())!=null){
list.add(s) ;
}
return list ;
}
private static String[] getLocalFileNameArray(String localPath){
File diskFile = new File(localPath);
if(diskFile!=null){
String[] fileNameList = diskFile.list() ;
return fileNameList ;
}else{
return null ;
}
}
public static String getNowTime() {
String timeStr;
DateFormat format = new SimpleDateFormat("yyyy-MM-dd HH-mm-ss");
Date currentTime = new Date(System.currentTimeMillis());
timeStr = format.format(currentTime);
return timeStr;
}
public staticString getWantFileName() throws Exception{
Date currentTime = new Date(System.currentTimeMillis());
DateFormat df1 = new SimpleDateFormat("yyyyMMdd");
Date todayDate = new Date(System.currentTimeMillis()) ;
String todayStr =df1.format(todayDate) ;//得到当前的年月日
StringcompareTimeStr1 = todayStr+"00";
StringcompareTimeStr2 = todayStr+"06";
StringcompareTimeStr3 = todayStr+"12";
StringcompareTimeStr4 = todayStr+"18";
DateFormat df2 = new SimpleDateFormat("yyyyMMddHH");
Date compareTime1 = df2.parse(compareTimeStr1) ;
Date compareTime2 = df2.parse(compareTimeStr2) ;
Date compareTime3 = df2.parse(compareTimeStr3) ;
Date compareTime4 = df2.parse(compareTimeStr4) ;
if(currentTime.after(compareTime1)&¤tTime.before(compareTime2)){
//此时应该下载00点的文件,文件名为:compareTimeStr1
System.out.println("此时要下载的文件名为:"+compareTimeStr1+".zip") ;
return compareTimeStr1 ;
}else if(currentTime.after(compareTime2)&¤tTime.before(compareTime3)){
//此时应该下载06点的文件,文件名为:compareTimeStr2
System.out.println("此时要下载的文件名为:"+compareTimeStr2+".zip") ;
return compareTimeStr2;
}else if(currentTime.after(compareTime3)&¤tTime.before(compareTime4)){
//此时应该下载12点的文件,文件名为:compareTimeStr3
System.out.println("此时要下载的文件名为:"+compareTimeStr3+".zip") ;
return compareTimeStr3 ;
}else if(currentTime.after(compareTime4)){
//此时应该下载18点的文件,文件名为:compareTimeStr4
System.out.println("此时要下载的文件名为:"+compareTimeStr4+".zip") ;
return compareTimeStr4 ;
}else{
//nothing to do
return null ;
}
}
public static boolean ifToDownLoadFile(String wantFileName,String[] localFileNameArray){
if(wantFileName==null&&localFileNameArray==null){//当想要下载的文件名获得失败
return false ;
}else if(wantFileName==null&&localFileNameArray!=null){//当想要下载的文件名获得失败
return false ;
}else if(wantFileName!=null&&localFileNameArray==null){//当本地没有已下载的文件
return true ;
}else if(wantFileName!=null&&localFileNameArray!=null){//当要下载的文件在本地还没有
if(localFileNameArray.length>0){
for(int i=0; i<localFileNameArray.length; i++){
if(localFileNameArray.equals(wantFileName+".zip")){
return false ;
}
}
return true ;
}else{
return true ;
}
}else{
return false ;
}
}
public static void main(String args[]){
try {
FtpZipOption.downLoadZipFile() ;
} catch (Exception e) {
e.printStackTrace();
}
}
}
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