commons-net3.9.0 使用FTP上传文件卡死-优快云博客

现象：代码卡在如下位置不动

[arthas@1]$ thread 54
"http-nio-20814-exec-6" Id=54 RUNNABLE (in native)
    at java.net.SocketInputStream.socketRead0(Native Method)
    at java.net.SocketInputStream.socketRead(SocketInputStream.java:116)
    at java.net.SocketInputStream.read(SocketInputStream.java:171)
    at java.net.SocketInputStream.read(SocketInputStream.java:141)
    at sun.security.ssl.InputRecord.readFully(InputRecord.java:465)
    at sun.security.ssl.InputRecord.read(InputRecord.java:503)
    at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:983)
    at sun.security.ssl.SSLSocketImpl.readDataRecord(SSLSocketImpl.java:940)
    at sun.security.ssl.AppInputStream.read(AppInputStream.java:105)
    at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:284)
    at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:326)
    at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:178)
    at java.io.InputStreamReader.read(InputStreamReader.java:184)
    at java.io.BufferedReader.fill(BufferedReader.java:161)
    at java.io.BufferedReader.readLine(BufferedReader.java:324)
    at java.io.BufferedReader.readLine(BufferedReader.java:389)
    at org.apache.commons.net.ftp.FTP.getReply(FTP.java:565)
    at org.apache.commons.net.ftp.FTP.getReply(FTP.java:556)
    at org.apache.commons.net.ftp.FTPClient.completePendingCommand(FTPClient.java:1193)
    at org.apache.commons.net.ftp.FTPClient._storeFile(FTPClient.java:972)
    at org.apache.commons.net.ftp.FTPClient.storeFile(FTPClient.java:3274)
    at org.apache.commons.net.ftp.FTPClient.storeFile(FTPClient.java:3295)
    at com.external.infrastructure.util.FtpsClient.uploadFile(FtpsClient.java:149)
    at com.external.infrastructure.remote.FileTransferServiceImpl.uploadFile(AiBankFileTransferServiceImpl.java:57)
    at com.external.infrastructure.remote.FileTransferServiceImpl$$FastClassBySpringCGLIB$$670290a1.invoke(<generated>)