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java.lang.Objectcom.google.gwt.user.server.rpc.RPCServletUtils
public class RPCServletUtils
Utility class containing helper methods used by servlets that integrate with the RPC system.
Method Summary | |
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static boolean |
acceptsGzipEncoding(javax.servlet.http.HttpServletRequest request)
Returns true if the HttpServletRequest accepts Gzip
encoding. |
static boolean |
exceedsUncompressedContentLengthLimit(java.lang.String content)
Returns true if the response content's estimated UTF-8 byte
length exceeds 256 bytes. |
static java.lang.String |
readContentAsUtf8(javax.servlet.http.HttpServletRequest request)
Returns the content of an HttpServletRequest by decoding it using
the UTF-8 charset. |
static boolean |
shouldGzipResponseContent(javax.servlet.http.HttpServletRequest request,
java.lang.String responseContent)
Returns true if the request accepts gzip encoding and the
the response content's estimated UTF-8 byte length exceeds 256 bytes. |
static void |
writeResponse(javax.servlet.ServletContext servletContext,
javax.servlet.http.HttpServletResponse response,
java.lang.String responseContent,
boolean gzipResponse)
Write the response content into the HttpServletResponse . |
static void |
writeResponseForUnexpectedFailure(javax.servlet.ServletContext servletContext,
javax.servlet.http.HttpServletResponse response,
java.lang.Throwable failure)
Called when the servlet itself has a problem, rather than the invoked third-party method. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Method Detail |
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public static boolean acceptsGzipEncoding(javax.servlet.http.HttpServletRequest request)
true
if the HttpServletRequest
accepts Gzip
encoding. This is done by checking that the accept-encoding header
specifies gzip as a supported encoding.
request
- the request instance to test for gzip encoding acceptance
true
if the HttpServletRequest
accepts Gzip
encodingpublic static boolean exceedsUncompressedContentLengthLimit(java.lang.String content)
true
if the response content's estimated UTF-8 byte
length exceeds 256 bytes.
content
- the contents of the response
true
if the response content's estimated UTF-8 byte
length exceeds 256 bytespublic static java.lang.String readContentAsUtf8(javax.servlet.http.HttpServletRequest request) throws java.io.IOException, javax.servlet.ServletException
HttpServletRequest
by decoding it using
the UTF-8 charset.
request
- the servlet request whose content we want to read
HttpServletRequest
by decoding it using
the UTF-8 charset
java.io.IOException
- if the requests input stream cannot be accessed, read
from or closed
javax.servlet.ServletException
- if the content length of the request is not
specified of if the request's content type is not
'text/x-gwt-rpc' and 'charset=utf-8'public static boolean shouldGzipResponseContent(javax.servlet.http.HttpServletRequest request, java.lang.String responseContent)
true
if the request accepts gzip encoding and the
the response content's estimated UTF-8 byte length exceeds 256 bytes.
request
- the request associated with the response contentresponseContent
- a string that will be
true
if the request accepts gzip encoding and the
the response content's estimated UTF-8 byte length exceeds 256
bytespublic static void writeResponse(javax.servlet.ServletContext servletContext, javax.servlet.http.HttpServletResponse response, java.lang.String responseContent, boolean gzipResponse) throws java.io.IOException
HttpServletResponse
. If
gzipResponse
is true
, the response content
will be gzipped prior to being written into the response.
servletContext
- servlet context for this responseresponse
- response instanceresponseContent
- a string containing the response contentgzipResponse
- if true
the response content will be
gzip encoded before being written into the response
java.io.IOException
- if reading, writing, or closing the response's output
stream failspublic static void writeResponseForUnexpectedFailure(javax.servlet.ServletContext servletContext, javax.servlet.http.HttpServletResponse response, java.lang.Throwable failure)
servletContext
- response
- failure
-
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