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App App App Google App problem

I have a problem getting Appstats to work correctly. Using / appstats or / appstats / stats ends up in an endless loop that redirects back to / appstats / stats. This results in a 404 error that the page is not redirecting properly. Think about the problem?

Below are the relevant lines in my web.xml. This is basically the same from the documentation here .

<servlet>
    <servlet-name>appstats</servlet-name>
    <servlet-class>com.google.appengine.tools.appstats.AppstatsServlet</servlet-class>
</servlet>

<servlet-mapping>
    <servlet-name>appstats</servlet-name>
    <url-pattern>/appstats/*</url-pattern>
</servlet-mapping>

<filter>
    <filter-name>appstats</filter-name>
    <filter-class>com.google.appengine.tools.appstats.AppstatsFilter</filter-class>
    <init-param>
        <param-name>logMessage</param-name>
        <param-value>Appstats available: /appstats/details?time={ID}</param-value>
    </init-param>
</filter>

<filter-mapping>
    <filter-name>appstats</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

<security-constraint>
    <display-name>appstatsConstraint</display-name>
    <web-resource-collection>
        <web-resource-name>appstatsCollection</web-resource-name>
        <url-pattern>/appstats/*</url-pattern>
    </web-resource-collection>
    <auth-constraint>
        <role-name>admin</role-name>
    </auth-constraint>
</security-constraint>

Here are the relevant lines in my appengine-web.xml. I've tried using both / appstats / stats and / appstats options and they both have the same problem.

<admin-console>
    <page name="Appstats" url="/appstats/stats" />
</admin-console>

Below are the http headers showing an infinite redirect loop:

http://mysite.appspot.com/appstats/stats

GET /appstats/stats HTTP/1.1
Host: mysite.appspot.com
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:
1.9.2.3) Gecko/20100401 Firefox/3.6.3 (.NET CLR 3.5.30729)
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/
*;q=0.8
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Connection: keep-alive
Cookie: USER_LOCALE=en_US; JSESSIONID=POTIUPPpEmjHZoaNDWOSTA;
ACSID=AJKiYcHiwT8jH7e01V9O5iFu3kpBhDd3k3oBwwxylv5u0DbJ-
utvdpsgdb4Xim2WXwobkJmgTGGljvuh94_yVQ__-
VPnBsTtUAhRjSyZ2Lv3G7oUHAxTsCWHJIMChGT3-
XUyUNx8wxwvJisL_RTXH8Hc4TTLh_rVHm2k8gk8kgdbVZXexSV0K-
a3coELTecWIBolt0qLd5L-5vALm382KsqbHorPXqoZMPTvR_06g_mR1cbmF2Ihnk6YhP7no58BNpESM9HvFyKNKXODo39hF4oaZCcW0Q9TBqUMgsrBqlcIh3-
VvC7qvH0n_nAtrLTBbK_swnOFvCDcaf3whT9ty0CJ0VRNuNqIPOLHIeQAMgwXUNMr89P64EsgmuyONHR67glCQXEPOGXIaT1vcBJFwFoeNUqjdp824fHvoVhaL7Xlav-
LTIFuM3f_ymHLmibk57PRuXUYEaAG

HTTP/1.1 302 Found
Location: http://mysite.appspot.com/appstats/stats
X-AppEngine-Estimated-CPM-US-Dollars: $0.645553
X-AppEngine-Resource-Usage: ms=18965 cpu_ms=27884 api_cpu_ms=0
Set-Cookie:
ACSID=AJKiYcF_YA7PB18b3T5OO7vEMo31f1hFhO8xKqFRiBUGrCr4YABAAyugZXcDfKMOM-
r0FiK8xlOPfQWx3tOWIJ6ueOqK89X8M9YfHIs8WKUcSs6PwNZSKV0HKxvbqeWxfZI_cpo2YoS73s_RPlyEvjaYLOf6iXPpWeYyKTAbSqPOEBnVnTk3oso6ur66CIj3FnN8vsHfbanqY4sbaRsNj9pLjWZco0quYLOK1fd4wRZx_oAvk3jOlfAj7BZ7p9L1bO8oVCMpVn19cwT6zvO2-9RSjfiOPAacw7Cg0MT30r7Fr7SCj7VcSPAye4lc7tb9KL9ztZEk0xbEX-9vC6vHM_VfPJ54Kb_FycxE6lACsKTE4hj0bOa2-2quaOP0NSxfoH9ozLlQQCsGhpWBnlu__W06D0GqDqxcDUu2HocYqWuLi91aoa-
aRTkqB_qo4aAa3OvHeKoFgwrS; expires=Mon, 12-Apr-2010 19:41:49 GMT;
path=/
Date: Sun, 11 Apr 2010 19:42:08 GMT
Pragma: no-cache
Expires: Fri, 01 Jan 1990 00:00:00 GMT
Cache-Control: no-cache, must-revalidate
Content-Type: text/html
Server: Google Frontend
Content-Length: 0
----------------------------------------------------------
http://mysite.appspot.com/appstats/stats

GET /appstats/stats HTTP/1.1
Host: mysite.appspot.com
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:
1.9.2.3) Gecko/20100401 Firefox/3.6.3 (.NET CLR 3.5.30729)
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/
*;q=0.8
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Connection: keep-alive
Cookie: USER_LOCALE=en_US; JSESSIONID=POTIUPPpEmjHZoaNDWOSTA;
ACSID=AJKiYcF_YA7PB18b3T5OO7vEMo31f1hFhO8xKqFRiBUGrCr4YABAAyugZXcDfKMOM-
r0FiK8xlOPfQWx3tOWIJ6ueOqK89X8M9YfHIs8WKUcSs6PwNZSKV0HKxvbqeWxfZI_cpo2YoS73s_RPlyEvjaYLOf6iXPpWeYyKTAbSqPOEBnVnTk3oso6ur66CIj3FnN8vsHfbanqY4sbaRsNj9pLjWZco0quYLOK1fd4wRZx_oAvk3jOlfAj7BZ7p9L1bO8oVCMpVn19cwT6zvO2-9RSjfiOPAacw7Cg0MT30r7Fr7SCj7VcSPAye4lc7tb9KL9ztZEk0xbEX-9vC6vHM_VfPJ54Kb_FycxE6lACsKTE4hj0bOa2-2quaOP0NSxfoH9ozLlQQCsGhpWBnlu__W06D0GqDqxcDUu2HocYqWuLi91aoa-
aRTkqB_qo4aAa3OvHeKoFgwrS

HTTP/1.1 302 Found
Location: http://mysite.appspot.com/appstats/stats
X-AppEngine-Estimated-CPM-US-Dollars: $0.002243
X-AppEngine-Resource-Usage: ms=64 cpu_ms=93 api_cpu_ms=0
Date: Sun, 11 Apr 2010 19:42:08 GMT
Content-Type: text/html
Server: Google Frontend
Content-Length: 0
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2 answers


It turns out it was a problem with the URL rewrite filter configuration that I was also using in my web.xml. I had to make sure that no rules were being followed /appstats/*

. I have edited my rewrite urlrewrite.xml below.

<urlrewrite>
    <rule>
        <from>^(?!/appstats/)/(.*)$</from>
        <to last="true">/app/$1</to>
    </rule>
</urlrewrite>


/app/*

is my Spring dispatcher servlet mapping.

+2


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Thanks for posting an answer. I've searched google docs for the last hour trying to figure out what was wrong, and then I realized from reading the post that I have a damn urlrewrite filter setup! Hooray!



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