How does Java use system proxy settings to access a website

Question

I use a VPN client to access a website. My browers, like chrome, IE and firefox can all access the website. But java code, wget, curl cannot. Is there any setting for java to activate the function?

My VPN client is Jonus Pluse.

JaskeyLam · Accepted Answer · 2014-11-25 09:59:01Z

1

Try run your java application with :
java -Dhttp.proxyHost=webcache.example.com -Dhttp.proxyPort=8080;

Or set proxy before you get access to the network using HTTP:

System.setProperty("http.proxyHost", "webcache.example.com");
System.setProperty("http.proxyPort", "8080");

From: Java Networking and Proxies

answered Nov 25, 2014 at 9:59

JaskeyLam

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2 Comments

慧储 Over a year ago

Hi, Jaskey. I did as you said. It shows "Connection timed out". For the proxy host is like "sslvpn.xxx.xxx.com", I guess I should use htttps.proxyHost https.proxyPort instead. But it is still show errors "Connection reset".

JaskeyLam Over a year ago

@慧储 ,this should be a problem beyond the scope of proxy, check the answer and comment at stackoverflow.com/questions/17170980/…

lafarer · Accepted Answer · 2014-11-25 10:01:46Z

0

You can find the answer in the Java documentation.

Typically, you would use system properties:

java -Dhttp.proxyHost=10.0.0.100 -Dhttp.proxyPort=8800 ....

answered Nov 25, 2014 at 10:01

lafarer

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1 Comment

慧储 Over a year ago

Thank you, lafarer. As I said to Jaskey, it shows errors "Connection timed out."

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