public class DefaultServlet extends HttpServlet implements ResourceFactory
This servlet, normally mapped to /, provides the handling for static content, OPTION and TRACE methods for the context. The following initParameters are supported, these can be set either on the servlet itself or as ServletContext initParameters with a prefix of org.eclipse.jetty.servlet.Default. :
acceptRanges If true, range requests and responses are supported dirAllowed If true, directory listings are returned if no welcome file is found. Else 403 Forbidden. welcomeServlets If true, attempt to dispatch to welcome files that are servlets, but only after no matching static resources could be found. If false, then a welcome file must exist on disk. If "exact", then exact servlet matches are supported without an existing file. Default is true. This must be false if you want directory listings, but have index.jsp in your welcome file list. redirectWelcome If true, welcome files are redirected rather than forwarded to. gzip If set to true, then static content will be served as gzip content encoded if a matching resource is found ending with ".gz" resourceBase Set to replace the context resource base resourceCache If set, this is a context attribute name, which the servlet will use to look for a shared ResourceCache instance. relativeResourceBase Set with a pathname relative to the base of the servlet context root. Useful for only serving static content out of only specific subdirectories. pathInfoOnly If true, only the path info will be applied to the resourceBase stylesheet Set with the location of an optional stylesheet that will be used to decorate the directory listing html. etags If True, weak etags will be generated and handled. maxCacheSize The maximum total size of the cache or 0 for no cache. maxCachedFileSize The maximum size of a file to cache maxCachedFiles The maximum number of files to cache useFileMappedBuffer If set to true, it will use mapped file buffer to serve static content when using NIO connector. Setting this value to false means that a direct buffer will be used instead of a mapped file buffer. This is set to false by default by this class, but may be overridden by eg webdefault.xml cacheControl If set, all static content will have this value set as the cache-control header. otherGzipFileExtensions Other file extensions that signify that a file is gzip compressed. Eg ".svgz"
Constructor and Description |
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DefaultServlet() |
Modifier and Type | Method and Description |
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void |
destroy() |
protected void |
doGet(HttpServletRequest request,
HttpServletResponse response) |
protected void |
doOptions(HttpServletRequest req,
HttpServletResponse resp) |
protected void |
doPost(HttpServletRequest request,
HttpServletResponse response) |
protected void |
doTrace(HttpServletRequest req,
HttpServletResponse resp) |
String |
getInitParameter(String name) |
Resource |
getResource(String pathInContext)
get Resource to serve.
|
void |
init() |
protected ContextHandler |
initContextHandler(ServletContext servletContext)
Compute the field _contextHandler.
In the case where the DefaultServlet is deployed on the HttpService it is likely that this method needs to be overwritten to unwrap the ServletContext facade until we reach the original jetty's ContextHandler. |
protected boolean |
isGzippedContent(String path) |
protected boolean |
passConditionalHeaders(HttpServletRequest request,
HttpServletResponse response,
HttpContent content) |
protected void |
putHeaders(HttpServletResponse response,
HttpContent content,
long contentLength) |
protected boolean |
sendData(HttpServletRequest request,
HttpServletResponse response,
boolean include,
HttpContent content,
Enumeration<String> reqRanges) |
protected void |
sendDirectory(HttpServletRequest request,
HttpServletResponse response,
Resource resource,
String pathInContext) |
protected void |
sendWelcome(HttpContent content,
String pathInContext,
boolean endsWithSlash,
boolean included,
HttpServletRequest request,
HttpServletResponse response) |
doDelete, doHead, doPut, getLastModified, service, service
getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, log, log
public void init() throws UnavailableException
init
in class GenericServlet
UnavailableException
protected ContextHandler initContextHandler(ServletContext servletContext)
servletContext
- The servletContext of this servlet.public String getInitParameter(String name)
getInitParameter
in interface ServletConfig
getInitParameter
in class GenericServlet
public Resource getResource(String pathInContext)
getResource
in interface ResourceFactory
pathInContext
- The path to find a resource for.protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
doGet
in class HttpServlet
ServletException
IOException
protected void sendWelcome(HttpContent content, String pathInContext, boolean endsWithSlash, boolean included, HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
ServletException
IOException
protected boolean isGzippedContent(String path)
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
doPost
in class HttpServlet
ServletException
IOException
protected void doTrace(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException
doTrace
in class HttpServlet
ServletException
IOException
protected void doOptions(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException
doOptions
in class HttpServlet
ServletException
IOException
protected boolean passConditionalHeaders(HttpServletRequest request, HttpServletResponse response, HttpContent content) throws IOException
IOException
protected void sendDirectory(HttpServletRequest request, HttpServletResponse response, Resource resource, String pathInContext) throws IOException
IOException
protected boolean sendData(HttpServletRequest request, HttpServletResponse response, boolean include, HttpContent content, Enumeration<String> reqRanges) throws IOException
IOException
protected void putHeaders(HttpServletResponse response, HttpContent content, long contentLength)
public void destroy()
destroy
in interface Servlet
destroy
in class GenericServlet
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