Jfreechart picture files are not displayed on Linux

Error occurred:

Jan 4:19:21 PM Org.apache.catalina.core.StandardWrapperValve invoke
SEVERE:Servlet.service () for Servlets [Displaychart] in the context with path [/ALDB] threw exception [Chart image not found] with root cause
Javax.servlet.ServletException:Chart image not found
At Org.jfree.chart.servlet.DisplayChart.service (displaychart.java:149)
At Javax.servlet.http.HttpServlet.service (httpservlet.java:727)
At Org.apache.catalina.core.ApplicationFilterChain.internalDoFilter (applicationfilterchain.java:303)
At Org.apache.catalina.core.ApplicationFilterChain.doFilter (applicationfilterchain.java:208)
At Org.apache.tomcat.websocket.server.WsFilter.doFilter (wsfilter.java:52)
At Org.apache.catalina.core.ApplicationFilterChain.internalDoFilter (applicationfilterchain.java:241)
At Org.apache.catalina.core.ApplicationFilterChain.doFilter (applicationfilterchain.java:208)
At Org.apache.catalina.core.StandardWrapperValve.invoke (standardwrappervalve.java:220)
At Org.apache.catalina.core.StandardContextValve.invoke (standardcontextvalve.java:122)
At Org.apache.catalina.authenticator.AuthenticatorBase.invoke (authenticatorbase.java:501)
At Org.apache.catalina.core.StandardHostValve.invoke (standardhostvalve.java:170)
At Org.apache.catalina.valves.ErrorReportValve.invoke (errorreportvalve.java:98)
At Org.apache.catalina.valves.AccessLogValve.invoke (accesslogvalve.java:950)
At Org.apache.catalina.core.StandardEngineValve.invoke (standardenginevalve.java:116)
At Org.apache.catalina.connector.CoyoteAdapter.service (coyoteadapter.java:408)
At Org.apache.coyote.http11.AbstractHttp11Processor.process (abstracthttp11processor.java:1040)
At Org.apache.coyote.abstractprotocol$abstractconnectionhandler.process (abstractprotocol.java:607)
At Org.apache.tomcat.util.net.jioendpoint$socketprocessor.run (jioendpoint.java:313)
At Java.util.concurrent.ThreadPoolExecutor.runWorker (threadpoolexecutor.java:1110)
At Java.util.concurrent.threadpoolexecutor$worker.run (threadpoolexecutor.java:603)
At Java.lang.Thread.run (thread.java:722)

HTML Source code:

/displaychart?filename=jfreechart-5351821214105924657.png

File exists:

Find/-name Jfreechart-5351821214105924657.png-print
/home/soft/tomcat7/temp/jfreechart-5351821214105924657.png

Ll/home/soft/tomcat7/temp/jfreechart-5351821214105924657.png
-rw-r--r--1 root root 21517 Jan 16:19/home/soft/tomcat7/temp/jfreechart-5351821214105924657.png

Related code:

1File File =NewFile (System.getproperty ("Java.io.tmpdir"), filename); 2     if(!(File.exists ())) {  3       Throw NewServletexception ("File" + file.getabsolutepath () + "' does not exist"); 4     }  5   6     BooleanIschartinuserlist =false; 7Chartdeleter Chartdeleter = (chartdeleter) session.getattribute ("Jfreechart_deleter"); 8   9     if(Chartdeleter! =NULL) {  TenIschartinuserlist =chartdeleter.ischartavailable (filename);  One     }   A    -     BooleanIschartpublic =false;  -     if((Filename.length () >= 6) && the(filename.substring (0, 6). Equals ("public")))) {   -Ischartpublic =true;  -     }   -    +     BooleanIsonetimechart =false;  -     if(Filename.startswith (Servletutilities.gettemponetimefileprefix ())) { +Isonetimechart =true;  A     }   at    -     if((ischartinuserlist) | | (ischartpublic) | |(Isonetimechart)) -     {   - servletutilities.sendtempfile (file, response);  -       if(Isonetimechart) - File.delete ();  in     }   -     Else   to     {   +       Throw NewServletexception ("Chart Image not Found");  -}

Workaround:

Servletutilities.settemponetimefileprefix ("Jfreechart"); Add this, so that the 20th line of the above code results in true;
String filename = servletutilities.savechartaspng (chart, 1024x768, n, null, session);

Official explanation:

My Web application runs fine on my Windows development machine, if I deploy it to the Unix/linux production server, It doesn ' t work. What's the problem?

Most likely your server does does have X11 running. This was a Java (awt/java2d) issue, not something, which is specific to Jfreechart. There is some more information at Sun ' s website:

• Http://java.sun.com/products/java-media/2D/forDevelopers/java2dfaq.html

In addition, the following thread in the Jfreechart forum contains some useful information:

• http://www.jfree.org/phpBB2/viewtopic.php?t=1012

REF:

A few points of knowledge about Jfreechart

http://wangrusheng5200.iteye.com/blog/406876

Http://www.jfree.org/jfreechart/faq.html

Http://www.cnblogs.com/dkblog/archive/2007/09/25/1980861.html

Http://www.2cto.com/os/201411/354304.html

Http://www.linuxidc.com/Linux/2011-04/34633.htm

Jfreechart picture files are not displayed on Linux