| java.lang.Object
 com.oreilly.servlet.ServletUtils
| ServletUtils | | public class ServletUtils (Code) | | A collection of static utility methods useful to servlets.
Some methods require Servlet API 2.2.
author:
Jason Hunter, Copyright © 1998-2000
version:
1.5, 2001/02/11, added getResource() ".." check
version:
1.4, 2000/09/27, finalized getResource() behavior
version:
1.3, 2000/08/15, improved getStackTraceAsString() to take Throwable
version:
1.2, 2000/03/10, added getResource() method
version:
1.1, 2000/02/13, added returnURL() methods
version:
1.0, 1098/09/18 |
| Method Summary | |
| public static URL | getResource(ServletContext context, String resource)
Gets a reference to the given resource within the given context,
making sure not to serve the contents of WEB-INF, META-INF, or to
display .jsp file source. | | public static Servlet | getServlet(String name, ServletRequest req, ServletContext context)
Gets a reference to the named servlet, attempting to load it
through an HTTP request if necessary. | | public static String | getStackTraceAsString(Throwable t)
| | public static void | returnFile(String filename, OutputStream out)
| | public static void | returnURL(URL url, OutputStream out)
| | public static void | returnURL(URL url, Writer out)
|
| getResource | | public static URL getResource(ServletContext context, String resource) throws IOException(Code) | | Gets a reference to the given resource within the given context,
making sure not to serve the contents of WEB-INF, META-INF, or to
display .jsp file source.
Throws an IOException if the resource can't be read.
Parameters:
context - the context containing the resource
Parameters:
resource - the resource to be read a URL reference to the resource
exception:
IOException - if there's any problem accessing the resource |
| getServlet | | public static Servlet getServlet(String name, ServletRequest req, ServletContext context)(Code) | | Gets a reference to the named servlet, attempting to load it
through an HTTP request if necessary. Returns null if there's a problem.
This method behaves similarly to ServletContext.getServlet()
except, while that method may return null if the
named servlet wasn't already loaded, this method tries to load
the servlet using a dummy HTTP request. Only loads HTTP servlets.
Parameters:
name - the name of the servlet
Parameters:
req - the servlet request
Parameters:
context - the servlet context the named servlet, or null if there was a problem |
| getStackTraceAsString | | public static String getStackTraceAsString(Throwable t)(Code) | | Gets an exception's stack trace as a String
Parameters:
e - the exception the stack trace of the exception |
| returnURL | | public static void returnURL(URL url, OutputStream out) throws IOException(Code) | | Sends the contents of the specified URL to the output stream
Parameters:
URL - whose contents are to be sent
Parameters:
out - the output stream to write the contents
exception:
IOException - if an I/O error occurs |
| returnURL | | public static void returnURL(URL url, Writer out) throws IOException(Code) | | Sends the contents of the specified URL to the Writer (commonly either a
PrintWriter or JspWriter)
Parameters:
URL - whose contents are to be sent
Parameters:
out - the Writer to write the contents
exception:
IOException - if an I/O error occurs |
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