Package net.i2p.servlet

Class ErrorServlet

java.lang.Object

javax.servlet.GenericServlet

javax.servlet.http.HttpServlet

net.i2p.servlet.ErrorServlet

All Implemented Interfaces:

Serializable, Servlet, ServletConfig

public class ErrorServlet
extends HttpServlet

Common servlet for errors This is intended for webapps and local plugins. It is not appropriate for eepsites or remotely-accessible plugins, as it uses local console resources. See http://www.eclipse.org/jetty/documentation/current/custom-error-pages.html for how to add to web.xml or see examples in bundled webapps. Init parameters:

• CSSPath - absolue URL of CSS to reference, starting with /, defaults to console theme
• name - webapp or plugin name, will be translated with bundle, e.g. SusiMail
• bundle - package of translation bundle, e.g. net.i2p.susimail.web.messages

Most strings are translated with the console bundle, as we're using the same strings as in error.jsp and error500.jsp. Supported error codes: 403, 404, and 500+. Others must be added here.

Since:

0.9.34 adapted from routerconsole error.jsp, error500.jsp, and CSSHelper

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
ErrorServlet()

Method Summary

Modifier and Type	Method	Description
protected String	_t(String s)	translate a string, console bundle
protected String	_t(String s, Object o)	translate a string, console bundle
protected String	_t(String s, Object o, Object o2)	translate a string, console bundle
protected String	_w(String s)	translate a string, with webapp bundle
protected void	doGet(HttpServletRequest req, HttpServletResponse resp)
protected void	doPost(HttpServletRequest req, HttpServletResponse resp)	Needed if the errored page was a POST
void	init()
protected void	outputMessage(PrintWriter out, int errorCode, String errorMsg, String errorURI, Throwable errorCause)	Override for specific cases.

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doHead, doOptions, doPut, doTrace, getLastModified, service, service

Methods inherited from class javax.servlet.GenericServlet

destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, log, log

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

ErrorServlet

public ErrorServlet()

Method Details

init

public void init()
          throws ServletException

Overrides:

init in class GenericServlet

Throws:

ServletException

doGet

protected void doGet(HttpServletRequest req,
 HttpServletResponse resp)
              throws ServletException,
IOException

Overrides:

doGet in class HttpServlet

Throws:

ServletException

IOException

doPost

protected void doPost(HttpServletRequest req,
 HttpServletResponse resp)
               throws ServletException,
IOException

Needed if the errored page was a POST

Overrides:

doPost in class HttpServlet

Throws:

ServletException

IOException

Since:

0.9.35

outputMessage

protected void outputMessage(PrintWriter out,
 int errorCode,
 String errorMsg,
 String errorURI,
 Throwable errorCause)

Override for specific cases. This supports 403, 404, and 500+. Output HTML that goes inside the div.

Parameters:

errorCode - e.g. 404

errorMsg - non-null, may be empty, already HTML-escaped

errorURI - non-null, may be empty, already HTML-escaped

errorCause - may be null

_w

protected String _w(String s)

translate a string, with webapp bundle

_t

protected String _t(String s)

translate a string, console bundle

_t

protected String _t(String s,
 Object o)

translate a string, console bundle

_t

protected String _t(String s,
 Object o,
 Object o2)

translate a string, console bundle