loading mapscript in java error

[dbarron]

Got the mapscript library to load - but now I have yet another error.  Got
library to load by doing the following:

- commented out the following entry in the <src-root>/mapscript/swiginc/map.i
file - any ideas why the map.i file contains this entry?  maybe it needs to
be modified?

  int saveQueryAsGML(char *filename) {
    return msGMLWriteQuery(self, filename);
  }

- rebuilt the java source files using swig command

  swig -java -v -package mapscript mapscript.i

- rebuilt the mapscript.jar and libmapscript.so files
- copied the mapscript.jar file to the /usr/local/jdk1.5.0/jre/lib/ext/
directory

Now when I try to run the following little java app to test:

 import java.io.*;
 import edu.umn.gis.mapscript.*;

 public class MapScriptTest {

   public static void main(String[] args) throws IOException {
      System.out.println("loading mapscript library...");
      System.loadLibrary("mapscript");
      System.out.println("mapscript library LOADED...");
      mapObj  map;
      imageObj image;

      map=new mapObj("/home/dbarron/mapserver-test/china.map");
      System.out.println("Created new mapObj()...");
      image=map.draw();
      image.save("china.png",map);

   }
 }

I get the following output and exception:

loading mapscript library...
mapscript library LOADED...
Exception in thread "main" java.lang.NoClassDefFoundError:
edu/umn/gis/mapscript/mapObj (wrong name: mapscript/mapObj)
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
        at
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:299)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
        at MapScriptTest.main(MapScriptTest.java:14)

I will continue to work through it - but wanted to see if either of you had
any ideas on this?

Thanks,

Dan


On Monday 08 November 2004 10:30, dbarron wrote:
> Umberto,
>
> Thanks for the suggestions!
>
> The error in full is below.  The test app does see the library and tries to
> load it - it just has an error within the library itself.  I used the
> straight beta2 release as Sean suggested.  It seems like the
> java/libmapscript.so compile is not loading in the source that holds the
> GML functionality - that's my guess anyway.  I do see the mapgml.c file get
> compiled into mapserv.exe - that defines the msGMLWriteQuery method - but
> why the java/libmapscript.so compile does not get it too, I do not know at
> this point.  I'll see if I can get it to work today.
>
> loading mapscript library...
> Exception in thread "main"
> java.lang.UnsatisfiedLinkError: /usr/local/lib/special/libmapscript.so:
> /usr/local/lib/special/libmapscript.so: undefined symbol: msGMLWriteQuery
>         at java.lang.ClassLoader$NativeLibrary.load(Native Method)
>         at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1751)
>         at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1676)
>         at java.lang.Runtime.loadLibrary0(Runtime.java:822)
>         at java.lang.System.loadLibrary(System.java:992)
>         at MapScriptTest.main(MapScriptTest.java:8)
>
> Dan