Common proxy settings for Java

As the company on the Internet to implement agency mechanism,
And recently, I've been studying OPENAPI on the web.
There is no way to use the agent, I previously an article introduced the HttpClient proxy usage,
This article describes how to use the proxy for basic java.
The most commonly used global configuration agent.

Java code

2. Properties prop = System.getproperties ();
4. //HTTP proxy IP Settings
6. Prop.setproperty ("Http.proxyhost", "10.28.0.254");
8. //HTTP proxy port settings
10. Prop.setproperty ("Http.proxyport", "80");
12. //You can also set the address that does not need to use the proxy
14. Prop.setproperty ("http.nonproxyhosts", "localhost|10.28.0.*");
16. //Set the proxy server address and port for HTTPS secure access
18. Prop.setproperty ("Https.proxyhost", "10.28.0.254");
20. Prop.setproperty ("Https.proxyport", "443");
22. The filter address property for secure access is also http.nonproxyhosts and not https.nonproxyhosts
26. //ftp proxy settings into the next
28. Prop.setproperty ("Ftp.proxyhost", "192.168.0.254");
30. Prop.setproperty ("Ftp.proxyport", "2121");
32. Prop.setproperty ("ftp.nonproxyhosts", "localhost|192.168.0.*");
34. proxy settings for//socks
36. Prop.setproperty ("Socksproxyhost", "192.168.0.254");
38. Prop.setproperty ("Socksproxyport", "8000");

Sometimes proxies need to be authenticated at this point we need to define a class that inherits the class authenticator.

Java code

2. Public class Myauthenticator extends Authenticator {
4. private String username = "";
6. private String Password = "";
8. Public Myauthenticator (string Username, string password) {
10. this.username = Username;
12. This.password = password;
14. }
16. protected Passwordauthentication getpasswordauthentication () {
18. Returnnew passwordauthentication (username, Password.tochararray ());
20. }
22. }
26. Set the user name and password to log on to the proxy server
28. Authenticator.setdefault (new Myauthenticator ("UserName", "Password"));

Of course, this method can meet most of the requirements but there are some limitations,
Is that all connections are configured by proxy with a unified attribute and cannot be configured for a specific connection.

JDK5 and later releases introduce a new proxy configuration that can be configured for a specific connection

Java code

2. URL url = new URL ("http://www.shanhe114.com");
4. //Create Proxy Server
6. Inetsocketaddress addr = new Inetsocketaddress ("10.28.0.4",
8. 8080);
10. //proxy proxy = new Proxy (Proxy.Type.SOCKS, addr);//socks Agent
12. Proxy proxy = new Proxy (Proxy.Type.HTTP, addr); //http Agent
14. //Other ways to see Proxy.type properties
16. URLConnection conn = url.openconnection (proxy);
18. InputStream in = Conn.getinputstream ();
20. //inputstream in = Url.openstream ();
22. String content = ioutils.tostring (in);
24. SYSTEM.OUT.PRINTLN (content);

Common proxy settings for Java