Examples of java.net.JarURLConnection

java.net.JarURLConnection
oo.com/bar/baz.jar!/COM/foo/Quux.class

Jar URLs should be used to refer to a JAR file or entries in a JAR file. The example above is a JAR URL which refers to a JAR entry. If the entry name is omitted, the URL refers to the whole JAR file: jar:http://www.foo.com/bar/baz.jar!/
Users should cast the generic URLConnection to a JarURLConnection when they know that the URL they created is a JAR URL, and they need JAR-specific functionality. For example:
```
 URL url = new URL("jar:file:/home/duke/duke.jar!/"); JarURLConnection jarConnection = (JarURLConnection)url.openConnection(); Manifest manifest = jarConnection.getManifest(); 
```
JarURLConnection instances can only be used to read from JAR files. It is not possible to get a {@link java.io.OutputStream} to modify or write to the underlying JAR file using this class.
Examples:

A Jar entry
jar:http://www.foo.com/bar/baz.jar!/COM/foo/Quux.class
A Jar file
jar:http://www.foo.com/bar/baz.jar!/
A Jar directory
jar:http://www.foo.com/bar/baz.jar!/COM/foo/

!/ is refered to as the separator.
When constructing a JAR url via new URL(context, spec), the following rules apply:
- if there is no context URL and the specification passed to the URL constructor doesn't contain a separator, the URL is considered to refer to a JarFile.
- if there is a context URL, the context URL is assumed to refer to a JAR file or a Jar directory.
- if the specification begins with a '/', the Jar directory is ignored, and the spec is considered to be at the root of the Jar file.
  Examples:
  
  context: jar:http://www.foo.com/bar/jar.jar!/, spec:baz/entry.txt
  url:jar:http://www.foo.com/bar/jar.jar!/baz/entry.txt
  context: jar:http://www.foo.com/bar/jar.jar!/baz, spec:entry.txt
  url:jar:http://www.foo.com/bar/jar.jar!/baz/entry.txt
  context: jar:http://www.foo.com/bar/jar.jar!/baz, spec:/entry.txt
  url:jar:http://www.foo.com/bar/jar.jar!/entry.txt
@see java.net.URL @see java.net.URLConnection @see java.util.jar.JarFile @see java.util.jar.JarInputStream @see java.util.jar.Manifest @see java.util.zip.ZipEntry @author Benjamin Renaud @since 1.2


    try
    {
      if (connection instanceof JarURLConnection)
      {
        JarURLConnection jarUrlConnection = (JarURLConnection)connection;
        URL jarFileUrl = jarUrlConnection.getJarFileURL();
        URLConnection jarFileConnection = jarFileUrl.openConnection();
        try
        {
          return jarFileConnection.getLastModified();
        }

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        List<URL> dirURLs = new ArrayList<URL>();
        File directory;
        if (url != null) {
            if (url.toString().startsWith("jar:file:")) {
                try {
                    JarURLConnection jarConnection = (JarURLConnection) url.openConnection();
                    URL urlJC = jarConnection.getJarFileURL();
                    URI baseURI = new URI(urlJC.toString().replaceAll(" ", "%20"));
                    directory = new File(baseURI);
                    if (directory.isDirectory()) {
                        if (directory.canRead()) {
                            JarFile temp = new JarFile(directory);

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            JarFile jarFile = null;
            InputStream is = null;
            ServletContainerInitializer sci = null;
            try {
                if ("jar".equals(url.getProtocol())) {
                    JarURLConnection conn =
                        (JarURLConnection) url.openConnection();
                    jarFile = conn.getJarFile();
                    ZipEntry entry = jarFile.getEntry(SCI_LOCATION);
                    if (entry != null) {
                        is = jarFile.getInputStream(entry);
                    }
                } else if ("file".equals(url.getProtocol())) {

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            URL url = fragment.getURL();
            JarFile jarFile = null;
            try {
                // Note: Ignore file URLs for now since only jar URLs will be accepted
                if ("jar".equals(url.getProtocol())) {
                    JarURLConnection conn =
                        (JarURLConnection) url.openConnection();
                    jarFile = conn.getJarFile();   
                    ZipEntry entry = jarFile.getEntry("META-INF/resources/");
                    if (entry != null) {
                        context.addResourceJarUrl(url);
                    }
                }

View Full Code Here

    protected void processAnnotationsJar(URL url, WebXml fragment) {
        JarFile jarFile = null;
        
        try {
            URLConnection urlConn = url.openConnection();
            JarURLConnection jarUrlConn;
            if (!(urlConn instanceof JarURLConnection)) {
                // This should never happen
                sm.getString("contextConfig.jarUrl", url);
                return;
            }
            
            jarUrlConn = (JarURLConnection) urlConn;
            jarUrlConn.setUseCaches(false);
            jarFile = jarUrlConn.getJarFile();
            
            Enumeration<JarEntry> jarEntries = jarFile.entries();
            while (jarEntries.hasMoreElements()) {
                JarEntry jarEntry = jarEntries.nextElement();
                String entryName = jarEntry.getName();

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  public InputStream getInputStreamFromConfigFileEntry(String fileName) throws MaltChainedException {
    if  (!url.toString().startsWith("jar")) { 
      // New solution 
      try {
        JarURLConnection conn = (JarURLConnection)new URL("jar:" + url.toString() + "!/").openConnection();
        JarFile mcoFile = conn.getJarFile();
        JarEntry entry = mcoFile.getJarEntry(getName()+'/'+fileName);
        if (entry == null) {
          entry = mcoFile.getJarEntry(getName()+'\\'+fileName);
        }
        if (entry == null) {

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  public InputStreamReader getInputStreamReaderFromConfigFileEntry(String fileName, String charSet) throws MaltChainedException {
    if  (!url.toString().startsWith("jar")) { 
      // New solution 
      try {
        JarURLConnection conn = (JarURLConnection)new URL("jar:" + url.toString() + "!/").openConnection();


        JarFile mcoFile = null;
        mcoFile = conn.getJarFile();
        JarEntry entry = mcoFile.getJarEntry(getName() + '/' + fileName);
  
        if (entry == null) {
          entry = mcoFile.getJarEntry(getName() + '\\' + fileName);
        }

View Full Code Here

      if (resource != null && resource.getProtocol().equals("jar"))
      {
         try
         {
            // Obtain a reference to the JAR containing the scaffold directory
            JarURLConnection connection = (JarURLConnection) resource.openConnection();
            JarFile jarFile = connection.getJarFile();
            Enumeration<JarEntry> entries = jarFile.entries();
            // Iterate through the JAR entries and copy files to the template directory. Only files ending with .ftl,
            // and
            // present in the scaffold/ directory are copied.
            while (entries.hasMoreElements())

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                // check files in jar file, entries will list all directories
                // and files in jar


                URLConnection openConnection = location.openConnection();
                if (openConnection instanceof JarURLConnection) {
                    JarURLConnection conn = (JarURLConnection) openConnection;


                    JarFile jarFile = conn.getJarFile();


                    Manifest manifest = jarFile.getManifest();
                    if (manifest == null) {
                        // No manifest so this is not a Vaadin Add-on
                        return;

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     */
    private static void includeJar(File file, Map<String, URL> locations) {
        try {
            URL url = new URL("file:" + file.getCanonicalPath());
            url = new URL("jar:" + url.toExternalForm() + "!/");
            JarURLConnection conn = (JarURLConnection) url.openConnection();
            JarFile jarFile = conn.getJarFile();
            if (jarFile != null) {
                // the key does not matter here as long as it is unique
                locations.put(url.toString(), url);
            }
        } catch (Exception e) {

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