将svg文件作为BuffereImage读取时发生java.lang.NoClassDefFoundError
我有一个.svg文件来创建一个地图,其中将包含与边界相关的侦听器(我猜它被称为可伸缩向量图形的“节点”)。但是,我试图将此文件添加为JPanel上的BuffereImage。(我是swing组件的新手,如果您有更好的想法,请与我们分享)。此外,我使用了这个库并阅读了一些关于它的信息,我使用这个代码示例将这个.svg文件作为BuffereImage将svg文件作为BuffereImage读取时发生java.lang.NoClassDefFoundError,java,swing,svg,java-2d,batik,Java,Swing,Svg,Java 2d,Batik,我有一个.svg文件来创建一个地图,其中将包含与边界相关的侦听器(我猜它被称为可伸缩向量图形的“节点”)。但是,我试图将此文件添加为JPanel上的BuffereImage。(我是swing组件的新手,如果您有更好的想法,请与我们分享)。此外,我使用了这个库并阅读了一些关于它的信息,我使用这个代码示例将这个.svg文件作为BuffereImage package org.pulpcore.tools.res; import java.awt.image.BufferedImage; impor
package org.pulpcore.tools.res;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import org.apache.batik.dom.svg.SVGDOMImplementation;
import org.apache.batik.transcoder.TranscoderException;
import org.apache.batik.transcoder.TranscoderInput;
import org.apache.batik.transcoder.TranscoderOutput;
import org.apache.batik.transcoder.TranscodingHints;
import org.apache.batik.transcoder.image.ImageTranscoder;
import org.apache.batik.util.SVGConstants;
import org.apache.commons.io.FileUtils;
public class SVGRasterizer {
/**
Rasterizes an SVG file using Batik.
@param svgFile The svg file.
@return The rasterized image.
@throws IOException if the svg file could not be rasterized.
*/
public static BufferedImage rasterize(File svgFile) throws IOException {
final BufferedImage[] imagePointer = new BufferedImage[1];
// Rendering hints can't be set programatically, so
// we override defaults with a temporary stylesheet.
// These defaults emphasize quality and precision, and
// are more similar to the defaults of other SVG viewers.
// SVG documents can still override these defaults.
String css = "svg {" +
"shape-rendering: geometricPrecision;" +
"text-rendering: geometricPrecision;" +
"color-rendering: optimizeQuality;" +
"image-rendering: optimizeQuality;" +
"}";
File cssFile = File.createTempFile("batik-default-override-", ".css");
FileUtils.writeStringToFile(cssFile, css);
TranscodingHints transcoderHints = new TranscodingHints();
transcoderHints.put(ImageTranscoder.KEY_XML_PARSER_VALIDATING, Boolean.FALSE);
transcoderHints.put(ImageTranscoder.KEY_DOM_IMPLEMENTATION,
SVGDOMImplementation.getDOMImplementation());
transcoderHints.put(ImageTranscoder.KEY_DOCUMENT_ELEMENT_NAMESPACE_URI,
SVGConstants.SVG_NAMESPACE_URI);
transcoderHints.put(ImageTranscoder.KEY_DOCUMENT_ELEMENT, "svg");
transcoderHints.put(ImageTranscoder.KEY_USER_STYLESHEET_URI, cssFile.toURI().toString());
try {
TranscoderInput input = new TranscoderInput(new FileInputStream(svgFile));
ImageTranscoder t = new ImageTranscoder() {
@Override
public BufferedImage createImage(int w, int h) {
return new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB);
}
@Override
public void writeImage(BufferedImage image, TranscoderOutput out)
throws TranscoderException {
imagePointer[0] = image;
}
};
t.setTranscodingHints(transcoderHints);
t.transcode(input, null);
}
catch (TranscoderException ex) {
// Requires Java 6
//throw new IOException("Couldn't convert " + svgFile, ex);
ex.printStackTrace();
throw new IOException("Couldn't convert " + svgFile);
}
finally {
cssFile.delete();
}
return imagePointer[0];
}
}
这是我使用GUI组件的类,也是我尝试使用BuffereImage的部分
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class JRisk {
private JFrame mainMap;
public JRisk() throws IOException{
initComponents();
}
private void initComponents() throws IOException{
mainMap = new JFrame();
mainMap.setResizable(false);
JPanel mainPanel = new JPanel();
File riskMap = new File("src\\src\\risk.svg");
BufferedImage bufImage = SVGRasterizer.rasterize(riskMap);
mainMap.setIconImage(bufImage);
mainMap.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
mainMap.add(mainPanel);
mainMap.pack();
mainMap.setVisible(true);
}
}
最后给出了包含主要方法的测试程序
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.SwingUtilities;
public class Test {
/**
* @param argsh
*/
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
try {
new JRisk();
} catch (IOException ex) {
Logger.getLogger(Test.class.getName()).log(Level.SEVERE, null, ex);
}
}
});
}
}
我的问题是编译器给出了一个错误
Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: org/w3c/dom/svg/SVGDocument
整个错误是
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:791)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
at org.apache.batik.dom.svg.SVGDOMImplementation.createDocument(Unknown Source)
at org.apache.batik.dom.util.SAXDocumentFactory.startElement(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:506)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:376)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl$NSContentDriver.scanRootElementHook(XMLNSDocumentScannerImpl.java:602)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:3063)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(XMLDocumentScannerImpl.java:881)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:607)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:116)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:488)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:835)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:764)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:123)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1210)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:568)
at org.apache.batik.dom.util.SAXDocumentFactory.createDocument(Unknown Source)
at org.apache.batik.dom.util.SAXDocumentFactory.createDocument(Unknown Source)
at org.apache.batik.dom.svg.SAXSVGDocumentFactory.createDocument(Unknown Source)
at org.apache.batik.dom.svg.SAXSVGDocumentFactory.createDocument(Unknown Source)
at org.apache.batik.transcoder.XMLAbstractTranscoder.transcode(Unknown Source)
at org.apache.batik.transcoder.SVGAbstractTranscoder.transcode(Unknown Source)
at src.SVGRasterizer.rasterize(SVGRasterizer.java:74)
at src.JRisk.initComponents(JRisk.java:31)
at src.JRisk.<init>(JRisk.java:17)
at src.Test$1.run(Test.java:24)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:705)
at java.awt.EventQueue.access$000(EventQueue.java:101)
at java.awt.EventQueue$3.run(EventQueue.java:666)
at java.awt.EventQueue$3.run(EventQueue.java:664)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:675)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:211)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:90)
Caused by: java.lang.ClassNotFoundException: org.w3c.dom.svg.SVGDocument
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
... 51 more
java.lang.ClassLoader.defineClass1(本机方法)上的
位于java.lang.ClassLoader.defineClass(ClassLoader.java:791)
位于java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
位于java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
在java.net.URLClassLoader.access$100(URLClassLoader.java:71)
在java.net.URLClassLoader$1.run(URLClassLoader.java:361)
在java.net.URLClassLoader$1.run(URLClassLoader.java:355)
位于java.security.AccessController.doPrivileged(本机方法)
位于java.net.URLClassLoader.findClass(URLClassLoader.java:354)
位于java.lang.ClassLoader.loadClass(ClassLoader.java:423)
位于sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
位于java.lang.ClassLoader.loadClass(ClassLoader.java:356)
位于org.apache.batik.dom.svg.SVGDOMImplementation.createDocument(未知源代码)
位于org.apache.batik.dom.util.SAXDocumentFactory.startElement(未知来源)
位于com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:506)
在com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:376)
位于com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl$NSContentDriver.scanRootElementHook(XMLNSDocumentScannerImpl.java:602)
位于com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:3063)
在com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(XMLDocumentScannerImpl.java:881)
位于com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:607)
在com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:116)
位于com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:488)
位于com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:835)
位于com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:764)
位于com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:123)
位于com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1210)
位于com.sun.org.apache.xerces.internal.jaxp.saxpasserimpl$jaxpsaxpasser.parse(saxpasserimpl.java:568)
位于org.apache.batik.dom.util.SAXDocumentFactory.createDocument(未知源)
位于org.apache.batik.dom.util.SAXDocumentFactory.createDocument(未知源)
位于org.apache.batik.dom.svg.SAXSVGDocumentFactory.createDocument(未知源)
位于org.apache.batik.dom.svg.SAXSVGDocumentFactory.createDocument(未知源)
位于org.apache.batik.transcoder.XMLAbstractTranscoder.transcode(未知源)
位于org.apache.batik.transcoder.SVGAbstractTranscoder.transcode(未知源)
在src.SVGRasterizer.rasterize(SVGRasterizer.java:74)
位于src.JRisk.initComponents(JRisk.java:31)
在src.JRisk.(JRisk.java:17)
在src.Test$1.run(Test.java:24)
在java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)中
位于java.awt.EventQueue.dispatchEventImpl(EventQueue.java:705)
在java.awt.EventQueue.access$000(EventQueue.java:101)
在java.awt.EventQueue$3.run(EventQueue.java:666)
在java.awt.EventQueue$3.run(EventQueue.java:664)
位于java.security.AccessController.doPrivileged(本机方法)
位于java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
位于java.awt.EventQueue.dispatchEvent(EventQueue.java:675)
位于java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:211)
位于java.awt.EventDispatchThread.PumpeEventsforFilter(EventDispatchThread.java:128)
位于java.awt.EventDispatchThread.PumpeEventsforHierarchy(EventDispatchThread.java:117)
位于java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113)
位于java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105)
在java.awt.EventDispatchThread.run(EventDispatchThread.java:90)
原因:java.lang.ClassNotFoundException:org.w3c.dom.svg.SVGDocument
在java.net.URLClassLoader$1.run(URLClassLoader.java:366)
在java.net.URLClassLoader$1.run(URLClassLoader.java:355)
位于java.security.AccessController.doPrivileged(本机方法)
位于java.net.URLClassLoader.findClass(URLClassLoader.java:354)
位于java.lang.ClassLoader.loadClass(ClassLoader.java:423)
位于sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
位于java.lang.ClassLoader.loadClass(ClassLoader.java:356)
... 还有51个
如果你能在这个话题上提供帮助,即使是有用的建议,我也会非常感激!无论如何,谢谢你把我的地址发到你的问题上:
似乎Batik下载中可能没有jar文件,您只需下载所需的jar库并将其添加到您的项目中即可。以下帖子我的地址是您的问题:
似乎Batik下载中可能没有jar文件,您可以下载所需的jar库并将其添加到您的项目中。尝试添加xml api.jara