java - 贾斯珀报告中的FileNotFoundException

This question already has answers here:

Can't load jrxml located in jar file via JRXmlLoader: getting java.io.FileNotFoundException [duplicate]
                                
                                    （2个答案）
                                
                        
                        
                            Caused by: java.io.FileNotFoundException error using Jasperreports
                                
                                    （1个答案）
                                
                        
                5年前关闭。
            
        

我正在尝试编译jasper报告文件（Invoice.jrxml），但出现此FileNotFound Exception错误

变量sourceFileName包含文件名
该文件位于

src / com.medicam.servlets / Invoice.jrxml

下面是我的代码

String [] prod = request.getParameterValues("prodn[]");
        String [] pkgdate = request.getParameterValues("pkgdate[]");
        String [] manufact = request.getParameterValues("manufact[]");
        String [] exp = request.getParameterValues("exp[]");
        String [] batch = request.getParameterValues("batch[]");
        String [] unit = request.getParameterValues("unit[]");
        String [] qty = request.getParameterValues("qty[]");
        String [] subtot = request.getParameterValues("subtot[]");
        ArrayList<String> prodname = new ArrayList<String>();
        ArrayList<String> packagedate = new ArrayList<String>();
        ArrayList<String> manufactdate = new ArrayList<String>();
        ArrayList<String> exipry = new ArrayList<String>();
        ArrayList<String> batchno = new ArrayList<String>();
        ArrayList<String> unitprice = new ArrayList<String>();
        ArrayList<String> quantity = new ArrayList<String>();
        ArrayList<String> Subtotal = new ArrayList<String>();
        Map<String, Object> param = new HashMap<String, Object>();

        for(int i=0;i<prod.length;i++)
        {
            prodname.add(prod[i]);
            packagedate.add(pkgdate[i]);
            manufactdate.add(manufact[i]);
            exipry.add(exp[i]);
            batchno.add(batch[i]);
            unitprice.add(unit[i]);
            quantity.add(qty[i]);
            Subtotal.add(subtot[i]);
        }
        param.put("prodname", prodname);
        param.put("pkgdate", packagedate);
        param.put("manfdate", manufactdate);
        param.put("expdate", exipry);
        param.put("batch", batchno);
        param.put("unit", prodname);
        param.put("qty", quantity);
        param.put("subtot", Subtotal);
        try {
        String sourceFileName = "Invoice.jrxml";
        JasperReport jasperReport = JasperCompileManager.compileReport(sourceFileName);
        JasperFillManager.fillReportToFile(
                 sourceFileName, param);

        JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, param, new JREmptyDataSource());
        JasperViewer.viewReport(jasperPrint, false);
            }
        catch (Exception e) {
                e.printStackTrace();
            }

堆栈跟踪

net.sf.jasperreports.engine.JRException: java.io.FileNotFoundException: Invoice.jrxml (No such file or directory)
    at net.sf.jasperreports.engine.xml.JRXmlLoader.load(JRXmlLoader.java:214)
    at net.sf.jasperreports.engine.xml.JRXmlLoader.load(JRXmlLoader.java:185)
    at net.sf.jasperreports.engine.xml.JRXmlLoader.load(JRXmlLoader.java:176)
    at net.sf.jasperreports.engine.JasperCompileManager.compile(JasperCompileManager.java:172)
    at net.sf.jasperreports.engine.JasperCompileManager.compileReport(JasperCompileManager.java:459)
    at com.medicam.servlets.GenerateReportForPurchase.doPost(GenerateReportForPurchase.java:111)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:644)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
    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:503)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:136)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:526)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:655)
    at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1566)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1523)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.io.FileNotFoundException: Invoice.jrxml (No such file or directory)
    at java.io.FileInputStream.open(Native Method)
    at java.io.FileInputStream.<init>(FileInputStream.java:146)
    at net.sf.jasperreports.engine.xml.JRXmlLoader.load(JRXmlLoader.java:209)
    ... 29 more

最佳答案

显然，无法通过简单文件名找到报告文件。

尝试以流方式加载。像这样

InputStream is=this.getClass().getResourceAsStream("/com/medicam/servlets/Invoice.jrxml")
JasperReport jasperReport = JasperCompileManager.compileReport(is);

关于java - 贾斯珀报告中的FileNotFoundException ，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/27656934/