//1、依赖的jar包：commons-net-1.4.1.jar
/**
* 上传文件到ftp服务器
* @param ftpHost
* @param userName
* @param passWord
* @param port
* @param ftpPath
* @param fileContent
* @param writeTempFielPath
*/
public static void upLoadFileForFtp(String ftpHost, String userName,
String passWord, int port, String writeTempFielPath, String fileContent,
String ftpUploadPath, String ftpFileName){
FTPClient ftpClient = null;
try {
ftpClient = initFtpClient(ftpHost, userName, passWord, port);
//不存在则创建
newFolder(writeTempFielPath);
boolean writeResult = saveFile(writeTempFielPath + ftpFileName, fileContent);
if (writeResult) {
File f = new File(writeTempFielPath + "/" + ftpFileName);
InputStream in = new FileInputStream(f);
ftpClient.changeWorkingDirectory(ftpUploadPath);
if (ftpClient.storeFile(ftpFileName, in)){
logger.info("文件" + ftpFileName + "上传成功！");
}else{
logger.info("文件" + ftpFileName + "上传失败！");
}
in.close();
f.delete();
} else {
logger.info("临时文件创建失败！");
}
} catch (Exception e) {
StaticVar.printExceptionInfo(logger, e);
e.printStackTrace();
}finally{
closeConn(ftpClient);
}
}
/**
* 下载最新文件
* @param ftpHost
* @param userName
* @param passWord
* @param port
* @param ftpPath
* @param fileName
* @return
* @throws IOException
*/
public static synchronized int downFilesForFtp(String ftpHost, String userName,
String passWord, int port, String ftpPath) throws IOException{
int updateCount = 0;
OutputStream os = null;
FTPClient ftpClient = null;
try {
ftpClient = initFtpClient(ftpHost, userName, passWord, port);
ftpClient.changeWorkingDirectory(ftpPath);
System.out.println("切换目录："+ftpClient.getReplyString());
FTPFile[] files = ftpClient.listFiles();
//创建临时目录
FileUtil.newFolder(StaticVar.TEMP_PATH);
for (int i = 0; i < files.length; i++) {
String fileName = files[i].getName();
//判断文件类型
if (fileName.indexOf(".txt") < 0){
continue;
}
//判断日志文件是否已存在，没有则创建
String downLogPath = StaticVar.DOWN_LOG_PATH+StaticVar.DOWN_LOG_NAME;
File downLog = new File(downLogPath);
if (downLog.exists()){
//判断是否已经下载过
if (isDown(files[i], downLogPath)){
logger.info("文件："+fileName+"已经下载过了！");
continue;
}else{
updateCount++;
}
}else{
downLog.createNewFile();
updateCount++;
}
String saveFilePath = StaticVar.TEMP_PATH + fileName;
os = new FileOutputStream(new File(saveFilePath));
boolean isDown = ftpClient.retrieveFile(fileName, os);
//记录下载日志
if (isDown){
logger.info("文件：" +saveFilePath+ "下载成功！");
FileUtil.newFolder(StaticVar.DOWN_LOG_PATH);
String log = files[i].getName() + "&" + files[i].getSize() + "&" + DateUtil.getNowDate(DateUtil.yyyyMMddHHmmss);
FileUtil.writeFile(downLogPath, log);
}
}
} catch (Exception e) {
e.printStackTrace();
logger.info("文件列表获取失败！");
StaticVar.printExceptionInfo(logger, e);
}finally{
if (null != os){
os.flush();
os.close();
}
closeConn(ftpClient);
}
return updateCount;
}
/**
* 读取文件
* @param file
* @return
* @throws IOException
*/
public static synchronized String readFile(String filePath) throws IOException{
StringBuffer resultBuffer = null;
InputStream in = null;
BufferedReader reader = null;
try {
in = new FileInputStream(filePath);
if (null != in){
reader = new BufferedReader(new InputStreamReader(in, "utf-8"));
resultBuffer = new StringBuffer();
String data = null;
while((data = reader.readLine()) != null){
resultBuffer.append(data + "\n");
}
return resultBuffer.toString();
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}finally{
if (null != reader){
reader.close();
}
if (null != in){
in.close();
}
}
return null;
}
/**
* 写文件
* @param fileName
* @param fileContext
* @param writeTempFielPath
* @return
*/
public static boolean saveFile(String filePath, String fileContext) {
try {
File file = new File(filePath);
if (!file.exists()) {
if (!file.createNewFile()) {
logger.info("文件创建失败！");
}
}
BufferedWriter write = new BufferedWriter(new FileWriter(file, true));
write.write(fileContext);
write.flush();
write.close();
return true;
} catch (Exception e) {
logger.error("文件写入失败！");
e.printStackTrace();
return false;
}
}
/**
* 判断文件是否已经下载
* @param ftpFile
* @param fileName
* @param downLogPath
* @return
* @throws IOException
*/
private static boolean isDown(FTPFile ftpFile, String downLogPath) throws IOException {
String fileName = ftpFile.getName();
String logTxt = FileUtil.readFile(downLogPath);
String[] logs = logTxt.split("\n");
boolean isDown = false;
for (String str : logs) {
String[] log = str.split("&"); //log[0]：文件名，log[1]：大小 (byte)
if (fileName.equals(log[0]) && ftpFile.getSize() == Long.parseLong(log[1])){
isDown = true;
break;
}
}
return isDown;
}
