您好我正在尝试连接FTP并读取文件并为该文件生成md5校验和值,但我正面临Stream Closed错误。这是我的代码。
import java.io.FileInputStream;
import java.security.MessageDigest;
import java.util.Properties;
import java.io.InputStream;
import java.io.ByteArrayInputStream;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import org.apache.commons.net.ftp.FTPClient;
MessageDigest digest = MessageDigest.getInstance("MD5");
FTPClient ftp=new FTPClient();
ftp.enterLocalPassiveMode();
ftp.connect("address");
ftp.login('username','password');
InputStream iStream=ftp.retrieveFileStream("path of the file");
BufferedInputStream bInf=new BufferedInputStream(iStream);
byte[] buffer = new byte[8192];
int read = 0;
while ((read = bInf.read(buffer)) !=-1)
{
digest.update(buffer, 0, read);
};
byte[] md5sum = digest.digest();
BigInteger bigInt = new BigInteger(1, md5sum)
def x=bigInt.toString(16).padLeft(32,'0')
请在我出错的地方帮助我
答案 0 :(得分:1)
我使用以下代码:
import java.security.MessageDigest
import org.apache.commons.net.ftp.FTPClient
MessageDigest digest = MessageDigest.getInstance("MD5")
String md5 = new FTPClient().with { ftp ->
try {
ftp.enterLocalPassiveMode()
ftp.connect( address )
ftp.login( username, password )
ftp.retrieveFileStream( path ).with { ins ->
if( ins == null ) {
println "ERROR: $ftp.replyCode '${ftp.replyString.trim()}'"
}
else {
try {
ins.eachByte( 8192 ) { buffer, nbytes ->
digest.update( buffer, 0, nbytes )
}
digest.digest().encodeHex().toString().padLeft( 32, '0' )
}
finally {
ins.close()
}
}
}
}
finally {
ftp.disconnect()
}
}
(假设您为address
,username
,password
和path
定义了变量