How to get the web container address in java

Author：Eve Cole Update Time：2024-11-19 20:30:02

tomcat local address E:/soft4develop/apache-tomcat-6.0.18

System.getProperty("user.dir")//E:/soft4develop/apache-tomcat-6.0.18/bin
System.getProperty("catalina.home")//E:/soft4develop/apache-tomcat-6.0.18 is also applicable to jboss. Other containers have not been tested.

Speaking of this, a friend happened to ask a question in the group. It was like this in a situational way.

For example https://www.VeVB.COm/admin/user_manager.apsx

I found that this does not require HTTPS, so I forwarded it to

//www.VeVB.COm/admin/user_manager.apsx

Here comes the problem

request.getServerPort() can only get the port1 port when https

So how to get the port2 port.

The path to tomact can be obtained through the above method, and can be obtained through the xpath of the following xml

The port configuration in tomcat's server.xml is spliced to achieve this.

How to get the tomcat port

Copy the code code as follows:

public static Integer getTomcatPortFromConfigXml(File serverXml) {
Integer port;
try {
DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance();
domFactory.setNamespaceAware(true); // never forget this!
DocumentBuilder builder = domFactory.newDocumentBuilder();
Document doc = builder.parse(serverXml);
XPathFactory factory = XPathFactory.newInstance();
XPath xpath = factory.newXPath();
XPathExpression expr = xpath.compile
("/Server/Service[@name='Catalina']/Connector[count(@scheme)=0]/@port[1]");
String result = (String) expr.evaluate(doc, XPathConstants.STRING);
port = result != null && result.length() > 0 ? Integer.valueOf(result) : null;
} catch (Exception e) {
port = null;
}
return port;
}

Finally, System.ge is attached

Copy the code code as follows:

In addition: the string parameters in System.getProperty() are as follows:

System.getProperty() parameter list
# java.version Java Runtime Environment version
# java.vendor Java Runtime Environment vendor
#java.vendor.url Java vendor URL
# java.home Java installation directory
# java.vm.specification.version Java Virtual Machine specification version
#java.vm.specification.vendor Java Virtual Machine specification vendor
#java.vm.specification.name Java Virtual Machine specification name
#java.vm.version Java Virtual Machine implementation version
#java.vm.vendor Java Virtual Machine implementation vendor
# java.vm.name Java Virtual Machine implementation name
# java.specification.version Java Runtime Environment specification version
# java.specification.vendor Java Runtime Environment specification vendor
# java.specification.name Java Runtime Environment specification name
# java.class.version Java class format version number
# java.class.path Java class path
# java.library.path List of paths to search when loading libraries
# java.io.tmpdir Default temp file path
# java.compiler Name of JIT compiler to use
# java.ext.dirs Path of extension directory or directories
# os.name Operating system name
# os.arch Operating system architecture
# os.version Operating system version
# file.separator File separator ("/" on UNIX)
# path.separator Path separator (":" on UNIX)
# line.separator Line separator ("/n" on UNIX)
# user.name User's account name
# user.home User's home directory
# user.dir User's current working directory

File.getCanonicalPath() and File.getAbsolutePath() only differ in the two paths of new File(".") and new File("..").

Copy the code code as follows:

# For the getCanonicalPath() function, "." represents the current folder, and ".." represents the upper-level folder of the current folder.
# For the getAbsolutePath() function, regardless of ".", "..", return the current path plus the path you set in new File()
# As for the getPath() function, what you get is just the path you set when new File()

For example, the current path is C:/test:
File directory = new File("abc");
directory.getCanonicalPath(); //The result is C:/test/abc
directory.getAbsolutePath(); //The result is C:/test/abc
direcotry.getPath(); //The result is abc

File directory = new File(".");
directory.getCanonicalPath(); //The result is C:/test
directory.getAbsolutePath(); //The result is C:/test/.
direcotry.getPath(); //What you get is.

File directory = new File("..");
directory.getCanonicalPath(); //The result is C:/
directory.getAbsolutePath(); //The result is C:/test/..
direcotry.getPath(); //What you get is...