Greenhorn
With the help of Apache Commons Net API, it is easy to write Java code for downloading a file from a remote FTP server to local computer.In this article, you will learn how to properly implement Java code to get files downloaded from a server via FTP protocol. A working sample program also provided.
posted 10 years agoHi
I want to download a file from a server over https, I get the following error
javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Unknown Source)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.fatal(Unknown Source)
at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Unknown Source)
at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Unknown Source)
at com.sun.net.ssl.internal.ssl.ClientHandshaker.serverCertificate(Unknown Source)
at com.sun.net.ssl.internal.ssl.ClientHandshaker.processMessage(Unknown Source)
at com.sun.net.ssl.internal.ssl.Handshaker.processLoop(Unknown Source)
I have the URL of the file and I use URLConnection.
Thanks
I want to download a file from a server over https, I get the following error
javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Unknown Source)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.fatal(Unknown Source)
at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Unknown Source)
at com.sun.net.ssl.internal.ssl.Handshaker.fatalSE(Unknown Source)
at com.sun.net.ssl.internal.ssl.ClientHandshaker.serverCertificate(Unknown Source)
at com.sun.net.ssl.internal.ssl.ClientHandshaker.processMessage(Unknown Source)
at com.sun.net.ssl.internal.ssl.Handshaker.processLoop(Unknown Source)
I have the URL of the file and I use URLConnection.
Thanks
Ranch Hand
posted 10 years agoHello,
please put code, stacktraces etc. in code tags.
Try this approach:
please put code, stacktraces etc. in code tags.
Try this approach:
JDBCSupport - An easy to use, light-weight JDBC framework -
Greenhorn
posted 10 years agoHi,
Here is a code that I copied from the web
Because of line 33 I get this error
Now the reason for this error is of course that the certificate sent by my server is not already in my list of trusted certificates.
My question is how to get the certificate into the trusted list.
Thanks
Here is a code that I copied from the web
Because of line 33 I get this error
Now the reason for this error is of course that the certificate sent by my server is not already in my list of trusted certificates.
My question is how to get the certificate into the trusted list.
Thanks
Greenhorn
posted 10 years agoHi
I made a mistake in the earlier post, the error occurs due to line 33 not 29.
Thanks
I made a mistake in the earlier post, the error occurs due to line 33 not 29.
Thanks
Sheriff
posted 10 years agoAnd what happens if you try to connect using URL, URLConnection and HttpsURLConnection as Sebastian suggested?
SCJP 1.4 - SCJP 6 - SCWCD 5 - OCEEJBD 6 - OCEJPAD 6
How To Ask QuestionsHow To Answer Questions
How To Ask QuestionsHow To Answer Questions
Greenhorn
posted 10 years agoHand shake exception is caused due to java not being to handle SSL connections by default.
As per my understanding when you open a secure internet connection over https you need to exchange certificates which the server uses to identify the caller and so that the security of the transferred information can be ensured.
Also this is a session specific thing.
I have had the problem when working with websphere and these are the settings I do to solve it.
You need to know who you are talking to and use an appropriate handler. May be there is some sort of generic handler that can be used for all https connections.
As per my understanding when you open a secure internet connection over https you need to exchange certificates which the server uses to identify the caller and so that the security of the transferred information can be ensured.
Also this is a session specific thing.
I have had the problem when working with websphere and these are the settings I do to solve it.
You need to know who you are talking to and use an appropriate handler. May be there is some sort of generic handler that can be used for all https connections.
Linux tutorial provides basic and advanced concepts of Linux. Our Linux tutorial is designed for beginners and professionals.
Linux is an open-source operating system. It is like Windows, Mac, Android, etc.
Unix is also an operating system like Linux. It is an commercial OS. It consists of three parts: Kernal, Shell and Programs. Most of the Unix and Linux commands are similar in nature.
Our Linux tutorial includes all topics of Linux OS such as Linux commands, Directories, Files, Man Pages, File Contents, File Permissions, shells, VI editor etc. There is also given Linux interview questions to help you better understand the Linux operating system.
![Httpclient Httpclient](https://files.readme.io/d272e29-http_request_response.png)
Linux Index
Linux Tutorial
Linux Directories
- Linux mkdir
Linux Files
- Linux files
- Linux file
- Linux touch
- Linux rm
- Linux cp
- Linux mv
- Linux rename
Linux Man Pages
Linux File Contents
- Linux cat
Linux File Hierarchy
12 Linux Filters
Linux I/O Redirection
Linux Unix Tools
Linux Regex
Linux Users
Linux File Security
Linux Shell Commands
Linux Networking
Linux vi editor
Linux System Admin
![File File](/uploads/1/2/6/2/126293382/540146890.png)
- Linux pmap
- Linux wget command
- Linux free Command
- Linux last
- Linux ps
100+ Linux Commands
Interview Questions
Prerequisite
Before learning Linux, you must have the basic knowledge of Operating System.
Audience
Our Linux or Unix tutorial is designed to help beginners and professionals.
Problem
We assure that you will not find any problem in this Linux tutorial. But if there is any mistake, please post the problem in contact form.