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java.lang.Objectjavax.servlet.GenericServlet
javax.servlet.http.HttpServlet
org.apache.felix.webconsole.AbstractWebConsolePlugin
org.apache.felix.webconsole.SimpleWebConsolePlugin
org.apache.felix.webconsole.internal.core.BundlesServlet
public class BundlesServlet
The BundlesServlet
provides the bundles plugins, used to display
the list of bundles, installed on the framework. It also adds ability to control
the lifecycle of the bundles, like start, stop, uninstall, install.
Field Summary | |
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static String |
NAME
the label of the bundles plugin - used by other plugins to reference to plugin details |
Fields inherited from class org.apache.felix.webconsole.AbstractWebConsolePlugin |
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ATTR_FILEUPLOAD, GET_RESOURCE_METHOD_NAME |
Fields inherited from interface org.apache.felix.webconsole.ConfigurationPrinter |
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MODE_ALWAYS, MODE_TXT, MODE_WEB, MODE_ZIP, PROPERTY_MODES, SERVICE |
Constructor Summary | |
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BundlesServlet()
Default constructor |
Method Summary | |
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void |
activate(BundleContext bundleContext)
This method is called from the Felix Web Console to ensure the AbstractWebConsolePlugin is correctly setup. |
void |
deactivate()
This method will close all service trackers, created by SimpleWebConsolePlugin.getService(String) method. |
protected void |
doGet(HttpServletRequest request,
HttpServletResponse response)
Renders the web console page for the request. |
protected void |
doPost(HttpServletRequest req,
HttpServletResponse resp)
Called by the server (via the service method)
to allow a servlet to handle a POST request. |
void |
printConfiguration(PrintWriter pw)
Prints the configuration report to the given printWriter . |
protected void |
renderContent(HttpServletRequest request,
HttpServletResponse response)
This method is used to render the content of the plug-in. |
Methods inherited from class org.apache.felix.webconsole.SimpleWebConsolePlugin |
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getCssReferences, getLabel, getResource, getService, getTitle, register, unregister |
Methods inherited from class org.apache.felix.webconsole.AbstractWebConsolePlugin |
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endResponse, getBrandingPlugin, getBundle, getBundleContext, getParameter, getResourceProvider, getServletName, isHtmlRequest, log, log, readTemplateFile, renderTopNavigation, sendRedirect, setBrandingPlugin, setLogLevel, startResponse |
Methods inherited from class javax.servlet.http.HttpServlet |
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doDelete, doHead, doOptions, doPut, doTrace, getLastModified, service, service |
Methods inherited from class javax.servlet.GenericServlet |
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destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, init, init, log, log |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface org.apache.felix.webconsole.ConfigurationPrinter |
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getTitle |
Field Detail |
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public static final String NAME
Constructor Detail |
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public BundlesServlet()
Method Detail |
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public void activate(BundleContext bundleContext)
AbstractWebConsolePlugin
activate
in interface OsgiManagerPlugin
activate
in class AbstractWebConsolePlugin
bundleContext
- the context of the plugin bundleAbstractWebConsolePlugin.activate(org.osgi.framework.BundleContext)
public void deactivate()
SimpleWebConsolePlugin
SimpleWebConsolePlugin.getService(String)
method. If you override this method, don't
forget to call the super.
deactivate
in interface OsgiManagerPlugin
deactivate
in class SimpleWebConsolePlugin
SimpleWebConsolePlugin.deactivate()
public void printConfiguration(PrintWriter pw)
ConfigurationPrinter
printWriter
.
Implementations are free to print whatever information they deem useful.
printConfiguration
in interface ConfigurationPrinter
pw
- where to write the configuration data. It might be flushed,
but must not be closed.ConfigurationPrinter.printConfiguration(java.io.PrintWriter)
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
AbstractWebConsolePlugin
AbstractWebConsolePlugin.startResponse(HttpServletRequest, HttpServletResponse)
AbstractWebConsolePlugin.renderTopNavigation(HttpServletRequest, PrintWriter)
AbstractWebConsolePlugin.renderContent(HttpServletRequest, HttpServletResponse)
AbstractWebConsolePlugin.endResponse(PrintWriter)
Note: If a resource is sent back for the request only the first step is executed. Otherwise the first step is a null-operation actually and the latter four steps are executed in order.
doGet
in class AbstractWebConsolePlugin
request
- an HttpServletRequest
object that
contains the request the client has made
of the servletresponse
- an HttpServletResponse
object that
contains the response the servlet sends
to the client
ServletException
- if the request for the GET
could not be handled
IOException
- if an input or output error is
detected when the servlet handles
the GET requestAbstractWebConsolePlugin.doGet(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException
HttpServlet
service
method)
to allow a servlet to handle a POST request.
The HTTP POST method allows the client to send
data of unlimited length to the Web server a single time
and is useful when posting information such as
credit card numbers.
When overriding this method, read the request data,
write the response headers, get the response's writer or output
stream object, and finally, write the response data. It's best
to include content type and encoding. When using a
PrintWriter
object to return the response, set the
content type before accessing the PrintWriter
object.
The servlet container must write the headers before committing the response, because in HTTP the headers must be sent before the response body.
Where possible, set the Content-Length header (with the
ServletResponse.setContentLength(int)
method),
to allow the servlet container to use a persistent connection
to return its response to the client, improving performance.
The content length is automatically set if the entire response fits
inside the response buffer.
When using HTTP 1.1 chunked encoding (which means that the response has a Transfer-Encoding header), do not set the Content-Length header.
This method does not need to be either safe or idempotent. Operations requested through POST can have side effects for which the user can be held accountable, for example, updating stored data or buying items online.
If the HTTP POST request is incorrectly formatted,
doPost
returns an HTTP "Bad Request" message.
doPost
in class HttpServlet
req
- an HttpServletRequest
object that
contains the request the client has made
of the servletresp
- an HttpServletResponse
object that
contains the response the servlet sends
to the client
ServletException
- if the request for the POST
could not be handled
IOException
- if an input or output error is
detected when the servlet handles
the requestHttpServlet.doPost(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
protected void renderContent(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException
AbstractWebConsolePlugin
renderContent
in class AbstractWebConsolePlugin
request
- the HTTP request send from the userresponse
- the HTTP response object, where to render the plugin data.
IOException
- if an input or output error is
detected when the servlet handles the request
ServletException
- if the request for the GET
could not be handledAbstractWebConsolePlugin.renderContent(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
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