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Problem with GluonJ and javassist.gluonj.util.Loader
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created by <a href="https://community.jboss.org/people/dzavodnikov">Dmitriy Zavodnikov</a> in <i>Javassist</i> - <a href="https://community.jboss.org/message/731467#731467">View the full discussion</a>
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<div class="jive-rendered-content"><p>I have a problem with part of <strong>GluonJ</strong> library: <span style="font-family: courier new,courier;">javassist.gluonj.util.Loader</span></p><p>I have this code:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span style="font-family: courier new,courier;">    Loader loader = new Loader(Class.class.getClassLoader(), new String[0]);</span></p><p><span style="font-family: courier new,courier;">    Class<?> sanselan1 = loader.loadClass("org.apache.sanselan.Sanselan");</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span style="font-family: courier new,courier;">    // Read image.</span></p><p><span style="font-family: courier new,courier;">    Method getBI = sanselan1.getMethod("getBufferedImage", new Class[]{ File.class } );</span></p><p><span style="font-family: courier new,courier;">    BufferedImage image = (BufferedImage) getBI.invoke(null, new Object[]{ imageIn });</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>And this code <em>work correctly</em>!</p><p><br/>But this code don't works:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span style="font-family: courier new,courier;">    Method setBI = <strong>sanselan1</strong>.getMethod(</span></p><p><span style="font-family: courier new,courier;">            "writeImage", </span></p><p><span style="font-family: courier new,courier;">            new Class[]{ BufferedImage.class, File.class, ImageFormat.class, Map.class }</span></p><p><span style="font-family: courier new,courier;">        );</span></p><p><span style="font-family: courier new,courier;">    setBI.invoke(null, new Object[]{ image, imageOut, ImageFormat.IMAGE_FORMAT_PNG, null });</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I get an error:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span style="font-family: courier new,courier;">java.lang.NoSuchMethodException: org.apache.sanselan.Sanselan.writeImage(java.awt.image.BufferedImage, java.io.File, org.apache.sanselan.ImageFormat, java.util.Map)</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>But if I using standart class loader:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><span style="font-family: courier new,courier;">    Class<?> <strong>sanselan2</strong> = Class.forName("org.apache.sanselan.Sanselan");</span></p><p><span style="font-family: courier new,courier;">    //...</span></p><p><span style="font-family: courier new,courier;">    Method setBI = <strong>sanselan2</strong>.getMethod(</span></p><p><span style="font-family: courier new,courier;">            "writeImage", </span></p><p><span style="font-family: courier new,courier;">            new Class[]{ BufferedImage.class, File.class, ImageFormat.class, Map.class }</span></p><p><span style="font-family: courier new,courier;">        );</span></p><p><span style="font-family: courier new,courier;">    setBI.invoke(null, new Object[]{ image, imageOut, ImageFormat.IMAGE_FORMAT_PNG, null });</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Everithing works fine! It meanse, that <span style="font-family: courier new,courier;">org.apache.sanselan.Sanselan</span> have method <span style="font-family: courier new,courier;">writeImage</span> and I correctly called it. </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>But if I using <span style="font-family: courier new,courier;">javassist.gluonj.util.Loader</span> I have an exception: <span style="font-family: courier new,courier;">NoSuchMethodException</span>.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>What is a problem?</p></div>
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