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Struts & Hibernate
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| | | Getting short reads | Getting short reads 2004-01-14 - By Shapira, Yoav
Back
Howdy,
Don't use HttpUtils#parsePostData, don't use HttpUtils at all. Use request
.getParameterMap for the closest equivalent.
Yoav Shapira
Millennium ChemInformatics
-- --Original Message-- --
From: Verma, Nitin (GECP, OTHER, 529706) [mailto:NITIN.VERMA@(protected)]
Sent: Wednesday, January 14, 2004 10:30 AM
To: Tomcat Users List
Subject: Getting short reads
Importance: High
Hi All,
Firstly let me explain my setup:
WebServer (apache httpd using jk2 plugin)
Application server tomcat (jakarta-tomcat-4 (See http://cat-4.ora-code.com).1.24)
server.xml entry for AJP:
<Connector className="org.apache.coyote.tomcat4.CoyoteConnector  " acceptCount=
"50" bufferSize="2048" connectionTimeout="10000" debug="0" enableLookups="false"
maxProcessors="75" minProcessors="20" address="3.130.232.169" port="13763"
protocolHandlerClassName="org.apache.jk.server.JkCoyoteHandler " proxyPort="0"
redirectPort="8443" scheme="ajp13" secure="false" tcpNoDelay="true"
useURIValidationHack="false">
<Factory className="org.apache.catalina.net.DefaultServerSocketFactory"/>
</Connector>
And we are using this application for simple services using HTTP-POST.
Few of the times I get ContentLength in Header > the real size Content in the
Stream. As we are using "javax.servlet.http.HttpUtils (...)"
to parse out the POST data we get "java.lang.IllegalArgumentException : Short
Read"
-- ---- ---- ---HttpUtils's parsePostData Method-- ---- ---- ---- ------
//Take a look at line number 236.
public static Hashtable parsePostData(int len, ServletInputStream in){
/* 218*/������� if(len <= 0)
/* 219*/����������� return new Hashtable();
/* 221*/������� if(in == null)
/* 222*/����������� throw new IllegalArgumentException();
/* 228*/������� byte postedBytes[] = new byte[len];
/* 230*/������� try
��������������� {
/* 230*/����������� int offset = 0;
/* 233*/����������� do
������������������� {
/* 233*/��������������� int inputLen = in.read(postedBytes, offset, len -
offset);
/* 234*/��������������� if(inputLen <= 0)
����������������������� {
/* 235*/������������������� String msg = lStrings.getString("err.io.short_read"
);
/* 236*/������������������� throw new IllegalArgumentException(msg);
����������������������� }
/* 238*/��������������� offset += inputLen;
������������������� } while(len - offset > 0);
��������������� }
/* 242*/������� catch(IOException e)
��������������� {
/* 242*/����������� throw new IllegalArgumentException(e.getMessage());
��������������� }
/* 251*/������� try
��������������� {
/* 251*/����������� String postedBody = new String(postedBytes, 0, len, "8859_1
");
/* 252*/����������� return parseQueryString(postedBody);
��������������� }
/* 256*/������� catch(UnsupportedEncodingException e)
��������������� {
/* 256*/����������� throw new IllegalArgumentException(e.getMessage());
��������������� }
����������� }
-- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ------
----Usage Code Snip-- -----
private void setClientType( HttpServletRequest p_Request) {
������� ...�������
������� Hashtable hash = HttpUtils.parsePostData(p_Request.getContentLength(),
p_Request.getInputStream());
������� ...
}
-- ---- ---- ---- ---- ---
----Error on high load-- ---- ---- --
2004-01-13 15:10:43,339|ERROR|java.lang.IllegalArgumentException|java.lang
.IllegalArgumentException: Short Read
at javax.servlet.http.HttpUtils (HttpUtils.java:236)
at com.ge.appl.tsf.shells.common.TSFParams.setClientType(Unknown Source)
at com.ge.appl.tsf.shells.common.TSFParams.<init>(Unknown Source)
at com.ge.appl.tsf.shells.web.TSFDispatcher.getParams(Unknown Source)
at com.ge.appl.tsf.shells.web.TSFDispatcher.service(Unknown Source)
at javax.servlet.http.HttpServlet (HttpServlet.java:853)
at org.apache.catalina.core.ApplicationFilterChain
(ApplicationFilterChain.java:247)
at org.apache.catalina.core.ApplicationFilterChain
(ApplicationFilterChain.java:193)
at org.apache.catalina.core.StandardWrapperValve (StandardWrapperValve
.java:256)
at org.apache.catalina.core.StandardPipeline $StandardPipelineValveContext
.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline (StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase (ContainerBase.java:995)
at org.apache.catalina.core.StandardContextValve (StandardContextValve
.java:191)
at org.apache.catalina.core.StandardPipeline $StandardPipelineValveContext
.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline (StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase (ContainerBase.java:995)
at org.apache.catalina.core.StandardContext (StandardContext.java:2415)
at org.apache.catalina.core.StandardHostValve (StandardHostValve.java:180)
at org.apache.catalina.core.StandardPipeline $StandardPipelineValveContext
.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve
.java:171)
at org.apache.catalina.core.StandardPipeline $StandardPipelineValveContext
.invokeNext(StandardPipeline.java:641)
at org.apache.catalina.valves.ErrorReportValve (ErrorReportValve.java:172)
at org.apache.catalina.core.StandardPipeline $StandardPipelineValveContext
.invokeNext(StandardPipeline.java:641)
at org.apache.catalina.core.StandardPipeline (StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase (ContainerBase.java:995)
at org.apache.catalina.core.StandardEngineValve (StandardEngineValve.java
:174)
at org.apache.catalina.core.StandardPipeline $StandardPipelineValveContext
.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline (StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase (ContainerBase.java:995)
at org.apache.coyote.tomcat4.CoyoteAdapter (CoyoteAdapter.java:223)
at org.apache.jk.server.JkCoyoteHandler (JkCoyoteHandler.java:261)
at org.apache.jk.common.HandlerRequest (HandlerRequest.java:360)
at org.apache.jk.common.ChannelSocket (ChannelSocket.java:604)
at org.apache.jk.common.ChannelSocket (ChannelSocket.java:562)
at org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:679)
at org.apache.tomcat.util.threads.ThreadPool $ControlRunnable.run(ThreadPool
.java:619)
at java.lang.Thread (Thread.java:536)
-- ---- ---- ---- ---- ---- --
Any pointers or guidance is welcome! I just need to isolate the problem first.
Regards,
Nitin
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