Java ClassLoader CreateLogbackXML(OutputStream out)

Description

Create Logback XML

License

Apache License

Declaration

private static void CreateLogbackXML(OutputStream out)
            throws IOException 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.io.InputStream;
import java.io.OutputStream;

import java.io.FileInputStream;

import java.io.IOException;

import java.net.URL;

import java.util.Enumeration;

import java.util.jar.JarEntry;

public class Main {
    private static void CreateLogbackXML(OutputStream out)
            throws IOException {
        Enumeration<URL> logback_xml_urls;
        logback_xml_urls = Thread.currentThread().getContextClassLoader()
                .getResources("logback.xml");
        while (logback_xml_urls.hasMoreElements()) {
            URL logback_xml_url = logback_xml_urls.nextElement();
            if (logback_xml_url.getProtocol().equals("file")) {
                //Case 1: logback.xml as simple file
                FileInputStream is = new FileInputStream(
                        logback_xml_url.getPath());
                while (is.available() > 0) {
                    out.write(is.read());
                }//from  ww  w  .j  a  v  a2s.  c  o m
                is.close();
                return;
            }
            if (logback_xml_url.getProtocol().equals("jar")) {
                //Case 2: logback.xml included in a JAR
                String path = logback_xml_url.getPath();
                String jarFile = path.substring("file:".length(),
                        path.indexOf("!"));
                java.util.jar.JarFile jar = new java.util.jar.JarFile(
                        jarFile);
                Enumeration<JarEntry> enums = jar.entries();
                while (enums.hasMoreElements()) {
                    java.util.jar.JarEntry file = enums.nextElement();
                    if (!file.isDirectory()
                            && file.getName().equals("logback.xml")) {
                        InputStream is = jar.getInputStream(file); // get the input stream
                        while (is.available() > 0) {
                            out.write(is.read());
                        }
                        is.close();
                        jar.close();
                        return;
                    }
                }
                jar.close();
            }
        }

        throw new IOException("Failed to locate a logback.xml");
    }
}

Related

1. AddFile(File f)
2. addFile(File file)
3. addFile(String s)
4. createDir(String pathName)
5. createDirectoryLoader(String directory)
6. findFile(String filename)
7. forName(String name)
8. hasImageFile(String name)
9. hasLogDatePatternMatcher(final String line)