Question

我正在尝试编译jasper报告文件（Invoice.jrxml），但我收到此FileNotFound异常错误

变量sourceFileName包含文件的名称该文件位于

的src / com.medicam.servlets / Invoice.jrxml

以下是我的代码

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();
            }

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

Answer 1

显然，无法通过简单的文件名找到报告文件。

尝试加载为流。喜欢这个

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

Answer 2

您需要提供具有完整文件名或相对于java当前目录的文件名。使用文件名的好选择是使用通过Class＃getResourceAsStream检索的InputStream。即使您将功能分发到jar存档中，这也将继续有效。另一方面，使用文件名意味着您需要将报告作为独立文件分发，并且必须小心提供以更正完整或相对文件名。

Answer 3

请提及

等文件的完整路径

String sourceFileName =＆＃34; D：\ APPS \ Invoice.jrxml＆＃34;;

如果是这样＆＃34; Invoice.jrxml＆＃34;存在于D Drive的APPS文件夹中（这是用于Windows）

String sourceFileName =＆＃34; /usr/local/Invoice.jrxml" ;;

如果是这样＆＃34; Invoice.jrxml＆＃34;存在于本地目录中（这适用于Linux）

Jasper Reports中的FileNotFoundException

3 个答案: