Android和FTP服務器交互下載文件（實測成功）
代碼private Boolean downloadAndSaveFile(String server, int portNumber,String user, String password, String filename, File localFile) throws IOException {
FTPClient ftp = null;
try {
ftp = new FTPClient();
ftp.connect(server, portNumber);
Log.d(LOG_TAG, "Connected. Reply: " + ftp.getReplyString());
ftp.login(user, password);
Log.d(LOG_TAG, "Logged in");
ftp.setFileType(FTP.BINARY_FILE_TYPE);
Log.d(LOG_TAG, "Downloading");
ftp.enterLocalPassiveMode();
OutputStream outputStream = null;
boolean success = false;
try {
outputStream = new BufferedOutputStream(new FileOutputStream(
localFile));
success = ftp.retrieveFile(filename, outputStream);
} finally {
if (outputStream != null) {
outputStream.close();
}
}
return success;
} finally {
if (ftp != null) {
ftp.logout();
ftp.disconnect();
}
}
}如果是用暱名
user = "anonymous"
password=""
Android Studio build.gradle 加入dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.4.0'
compile 'commons-net:commons-net:3.6'
}
下載時別忘了用 Thread
需要的Jar包下载地址：https://commons.apache.org/proper/commons-net/download_net.cgi
目前版本是：commons-net-3.6-bin.zip
參考文章：https://stackoverflow.com/questions/24605622/how-to-download-a-file-from-ftp-server-to-android-device
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