我有一个servlet，我试图从包含svg代码的字符串中创建pdf。因此，我有此代码：
public class Conversion extends HttpServlet {
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
String svgString = req.getParameter("svg");
StringReader svg = new StringReader(svgString);
File pdf = new File("/tmp/chart.pdf");
Transcoder transcoder = new PDFTranscoder();
TranscoderInput transcoderInput = new TranscoderInput(svg);
TranscoderOutput transcoderOutput = new TranscoderOutput(new FileOutputStream(pdf));
try {
transcoder.transcode(transcoderInput, transcoderOutput);
} catch (TranscoderException e) {
e.printStackTrace();
}
resp.setContentType("application/pdf");
InputStream in = new FileInputStream(pdf);
ServletOutputStream out = resp.getOutputStream();
byte[] buffer = new byte[4096];
while(in.read(buffer, 0, 4096) != -1){
out.write(buffer, 0, 4096);
}
in.close();
out.flush();
out.close();
}
}
执行时出现此错误：
java.lang.ClassNotFoundException: org.apache.batik.dom.svg.SVGDOMImplementation
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1332)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1166)
at org.apache.fop.svg.AbstractFOPTranscoder.<init>(AbstractFOPTranscoder.java:107)
at org.apache.fop.svg.PDFTranscoder.<init>(PDFTranscoder.java:84)
at com.Webmap_read.Conversion.doGet(Conversion.java:38)
at com.Webmap_read.Conversion.doPost(Conversion.java:68)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:673)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1526)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1482)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
当我检查“构建路径”时，似乎从以下站点下载的Batik 1.8存档文件中包含的所有JAR。但是类
http://apache.lauf-forum.at/xmlgraphics/batik/binaries/不存在。如何导入所有必需的JAR /类，为什么它们不包含在标准zip中？现在让我发疯了……或者也许有更简单的方法可以将SVG转换为PDF？ 最佳答案
看一下http://www.findjar.com/class/org/apache/batik/dom/svg/SVGDOMImplementation.html，检查是否有列出的jar包含在应用程序类路径中。
我建议您从https://xmlgraphics.apache.org/batik/download.html（官方网站）下载Batik。
关于java - Java batik :ClassNotFoundException:org.apache.batik.dom.svg.SVGDOMImplementation，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/34178503/