Class HTMLManagerServlet
- All Implemented Interfaces:
Serializable,Servlet,ServletConfig,ContainerServlet
The difference between the ManagerServlet and this Servlet is that this Servlet prints out an HTML
interface which makes it easier to administrate.
However if you use a software that parses the output of ManagerServlet you won't be able to upgrade to
this Servlet since the output are not in the same format ar from ManagerServlet
- Author:
- Bip Thelin, Malcolm Edgar, Glenn L. Nielsen
- See Also:
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Field Summary
Fields inherited from class org.apache.catalina.manager.ManagerServlet
configBase, context, debug, global, host, mBeanServer, oname, sm, versioned, wrapper -
Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionprotected StringdeployInternal(String config, ContextName cn, String war, StringManager smClient) Deploy an application for the specified path from the specified web application archive.protected voiddisplaySessionDetailPage(HttpServletRequest req, HttpServletResponse resp, ContextName cn, String sessionId, StringManager smClient) Display session details.protected voiddisplaySessionsListPage(ContextName cn, HttpServletRequest req, HttpServletResponse resp, StringManager smClient) List session.voiddoGet(HttpServletRequest request, HttpServletResponse response) Called by the server (via theservicemethod) to allow a servlet to handle a GET request.voiddoPost(HttpServletRequest request, HttpServletResponse response) Called by the server (via theservicemethod) to allow a servlet to handle a POST request.protected voiddoSessions(ContextName cn, HttpServletRequest req, HttpServletResponse resp, StringManager smClient) Handle session operations.protected StringexpireSessions(ContextName cn, HttpServletRequest req, StringManager smClient) Extract the expiration request parameterprotected Stringfindleaks(StringManager smClient) Find potential memory leaks caused by web application reload.protected Comparator<Session> getComparator(String sortBy) Returns information about the servlet, such as author, version, and copyright.protected SessiongetSessionForNameAndId(ContextName cn, String id, StringManager smClient) getSessionsForName(ContextName cn, StringManager smClient) voidinit()A convenience method which can be overridden so that there's no need to callsuper.init(config).protected intinvalidateSessions(ContextName cn, String[] sessionIds, StringManager smClient) Invalidate specified sessions.protected voidlist(HttpServletRequest request, HttpServletResponse response, String message, StringManager smClient) Render an HTML list of the currently active Contexts in our virtual host, and memory and server status information.protected Stringreload(ContextName cn, StringManager smClient) Reload the web application at the specified context path.protected booleanremoveSessionAttribute(ContextName cn, String sessionId, String attributeName, StringManager smClient) Removes an attribute from an HttpSessionprotected Stringsessions(ContextName cn, int idle, StringManager smClient) Display session information and invoke list.protected voidsslConnectorCerts(HttpServletRequest request, HttpServletResponse response, StringManager smClient) protected voidsslConnectorCiphers(HttpServletRequest request, HttpServletResponse response, StringManager smClient) protected voidsslConnectorTrustedCerts(HttpServletRequest request, HttpServletResponse response, StringManager smClient) protected StringsslReload(String tlsHostName, StringManager smClient) protected Stringstart(ContextName cn, StringManager smClient) Start the web application at the specified context path.protected Stringstop(ContextName cn, StringManager smClient) Stop the web application at the specified context path.protected Stringundeploy(ContextName cn, StringManager smClient) Undeploy the web application at the specified context path.protected Stringupload(HttpServletRequest request, StringManager smClient) Methods inherited from class org.apache.catalina.manager.ManagerServlet
addServiced, check, deploy, deploy, deploy, destroy, doPut, expireSessions, findleaks, getConnectorCerts, getConnectorCiphers, getConnectorTrustedCerts, getWrapper, isDeployed, isServiced, list, printResources, printResources, reload, removeServiced, resources, save, serverinfo, sessions, setWrapper, sslConnectorCiphers, sslReload, start, stop, threadDump, tryAddServiced, undeploy, uploadWar, validateContextName, vmInfoMethods inherited from class javax.servlet.http.HttpServlet
doDelete, doHead, doOptions, doTrace, getLastModified, service, serviceMethods inherited from class javax.servlet.GenericServlet
getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletName, init, log, log
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Constructor Details
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HTMLManagerServlet
public HTMLManagerServlet()
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Method Details
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doGet
public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException Description copied from class:javax.servlet.http.HttpServletCalled by the server (via theservicemethod) to allow a servlet to handle a GET request.Overriding this method to support a GET request also automatically supports an HTTP HEAD request. A HEAD request is a GET request that returns no body in the response, only the request header fields.
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
PrintWriterobject to return the response, set the content type before accessing thePrintWriterobject.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.
The GET method should be safe, that is, without any side effects for which users are held responsible. For example, most form queries have no side effects. If a client request is intended to change stored data, the request should use some other HTTP method.
The GET method should also be idempotent, meaning that it can be safely repeated. Sometimes making a method safe also makes it idempotent. For example, repeating queries is both safe and idempotent, but buying a product online or modifying data is neither safe nor idempotent.
If the request is incorrectly formatted,
doGetreturns an HTTP "Bad Request" message.- Overrides:
doGetin classManagerServlet- Parameters:
request- anHttpServletRequestobject that contains the request the client has made of the servletresponse- anHttpServletResponseobject that contains the response the servlet sends to the client- Throws:
IOException- if an input or output error is detected when the servlet handles the GET requestServletException- if the request for the GET could not be handled- See Also:
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doPost
public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException Description copied from class:javax.servlet.http.HttpServletCalled by the server (via theservicemethod) 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
PrintWriterobject to return the response, set the content type before accessing thePrintWriterobject.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,
doPostreturns an HTTP "Bad Request" message.- Overrides:
doPostin classHttpServlet- Parameters:
request- anHttpServletRequestobject that contains the request the client has made of the servletresponse- anHttpServletResponseobject that contains the response the servlet sends to the client- Throws:
IOException- if an input or output error is detected when the servlet handles the requestServletException- if the request for the POST could not be handled- See Also:
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upload
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deployInternal
Deploy an application for the specified path from the specified web application archive.- Parameters:
config- URL of the context configuration file to be deployedcn- Name of the application to be deployedwar- URL of the web application archive to be deployedsmClient- internationalized strings- Returns:
- message String
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list
protected void list(HttpServletRequest request, HttpServletResponse response, String message, StringManager smClient) throws IOException Render an HTML list of the currently active Contexts in our virtual host, and memory and server status information.- Parameters:
request- The requestresponse- The responsemessage- a message to displaysmClient- internationalized strings- Throws:
IOException- an IO error occurred
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reload
Reload the web application at the specified context path.- Parameters:
cn- Name of the application to be restartedsmClient- StringManager for the client's locale- Returns:
- message String
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undeploy
Undeploy the web application at the specified context path.- Parameters:
cn- Name of the application to be undeployedsmClient- StringManager for the client's locale- Returns:
- message String
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sessions
Display session information and invoke list.- Parameters:
cn- Name of the application to list session informationidle- Expire all sessions with idle time ≥ idle for this contextsmClient- StringManager for the client's locale- Returns:
- message String
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start
Start the web application at the specified context path.- Parameters:
cn- Name of the application to be startedsmClient- StringManager for the client's locale- Returns:
- message String
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stop
Stop the web application at the specified context path.- Parameters:
cn- Name of the application to be stoppedsmClient- StringManager for the client's locale- Returns:
- message String
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findleaks
Find potential memory leaks caused by web application reload.- Parameters:
smClient- StringManager for the client's locale- Returns:
- message String
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sslReload
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sslConnectorCiphers
protected void sslConnectorCiphers(HttpServletRequest request, HttpServletResponse response, StringManager smClient) throws ServletException, IOException - Throws:
ServletExceptionIOException
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sslConnectorCerts
protected void sslConnectorCerts(HttpServletRequest request, HttpServletResponse response, StringManager smClient) throws ServletException, IOException - Throws:
ServletExceptionIOException
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sslConnectorTrustedCerts
protected void sslConnectorTrustedCerts(HttpServletRequest request, HttpServletResponse response, StringManager smClient) throws ServletException, IOException - Throws:
ServletExceptionIOException
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getServletInfo
Description copied from class:javax.servlet.GenericServletReturns information about the servlet, such as author, version, and copyright. By default, this method returns an empty string. Override this method to have it return a meaningful value. SeeServlet.getServletInfo().- Specified by:
getServletInfoin interfaceServlet- Overrides:
getServletInfoin classGenericServlet- Returns:
- String information about this servlet, by default an empty string
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init
Description copied from class:javax.servlet.GenericServletA convenience method which can be overridden so that there's no need to callsuper.init(config).Instead of overriding
GenericServlet.init(ServletConfig), simply override this method and it will be called byGenericServlet.init(ServletConfig config). TheServletConfigobject can still be retrieved viaGenericServlet.getServletConfig().- Overrides:
initin classManagerServlet- Throws:
ServletException- if an exception occurs that interrupts the servlet's normal operation
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expireSessions
Extract the expiration request parameter- Parameters:
cn- Name of the application from which to expire sessionsreq- The Servlet requestsmClient- StringManager for the client's locale- Returns:
- message string
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doSessions
protected void doSessions(ContextName cn, HttpServletRequest req, HttpServletResponse resp, StringManager smClient) throws ServletException, IOException Handle session operations.- Parameters:
cn- Name of the application for the sessions operationreq- The Servlet requestresp- The Servlet responsesmClient- StringManager for the client's locale- Throws:
ServletException- Propagated Servlet errorIOException- An IO error occurred
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getSessionsForName
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getSessionForNameAndId
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displaySessionsListPage
protected void displaySessionsListPage(ContextName cn, HttpServletRequest req, HttpServletResponse resp, StringManager smClient) throws ServletException, IOException List session.- Parameters:
cn- Name of the application for which the sessions will be listedreq- The Servlet requestresp- The Servlet responsesmClient- StringManager for the client's locale- Throws:
ServletException- Propagated Servlet errorIOException- An IO error occurred
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displaySessionDetailPage
protected void displaySessionDetailPage(HttpServletRequest req, HttpServletResponse resp, ContextName cn, String sessionId, StringManager smClient) throws ServletException, IOException Display session details.- Parameters:
req- The Servlet requestresp- The Servlet responsecn- Name of the application for which the sessions will be listedsessionId- the session idsmClient- StringManager for the client's locale- Throws:
ServletException- Propagated Servlet errorIOException- An IO error occurred
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invalidateSessions
Invalidate specified sessions.- Parameters:
cn- Name of the application for which sessions are to be invalidatedsessionIds- the session ids of the sessionssmClient- StringManager for the client's locale- Returns:
- number of invalidated sessions
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removeSessionAttribute
protected boolean removeSessionAttribute(ContextName cn, String sessionId, String attributeName, StringManager smClient) Removes an attribute from an HttpSession- Parameters:
cn- Name of the application hosting the session from which the attribute is to be removedsessionId- the session idattributeName- the attribute namesmClient- StringManager for the client's locale- Returns:
- true if there was an attribute removed, false otherwise
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getComparator
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