Question

我在netbeans中创建了一个项目，包括jasperreports，然后我将项目转换为jar文件。我想当我运行项目的jar文件jasperReports文件也工作正常.......但为此，我使用以下代码来自代码的例外......

我尝试以下代码

//代码

InputStream input = this.getClass().getResourceAsStream("Users/Kashif/Desktop/Muhammad Kashif/Documents/NetBeansProjects/Torch/Reports/report11.jrxml");
                 JasperDesign jd = JRXmlLoader.load(input);

Map map = new HashMap();
            map.put("Discount", para);
            map.put("Customer", para1);
            map.put("Total", para2);

            JasperReport jasperReport =  JasperCompileManager.compileReport(jd);
            JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, map, con);

            //view report to UI
            JasperViewer.viewReport(jasperPrint, false);

//错误

net.sf.jasperreports.engine.JRException: java.net.MalformedURLException
    at net.sf.jasperreports.engine.xml.JRXmlLoader.loadXML(JRXmlLoader.java:305)
    at net.sf.jasperreports.engine.xml.JRXmlLoader.loadXML(JRXmlLoader.java:284)
    at net.sf.jasperreports.engine.xml.JRXmlLoader.load(JRXmlLoader.java:273)
    at net.sf.jasperreports.engine.xml.JRXmlLoader.load(JRXmlLoader.java:247)
    at torch.UserGui.printBtnActionPerformed(UserGui.java:1269)
.....
.....
.....
Caused by: java.net.MalformedURLException
    at java.net.URL.<init>(URL.java:619)
    at java.net.URL.<init>(URL.java:482)
    at java.net.URL.<init>(URL.java:431)
    at org.apache.xerces.impl.XMLEntityManager.setupCurrentEntity(Unknown Source)
    at org.apache.xerces.impl.XMLVersionDetector.determineDocVersion(Unknown Source)
    at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
    at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
    at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
    at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
    at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
    at org.apache.commons.digester.Digester.parse(Digester.java:1892)
    at net.sf.jasperreports.engine.xml.JRXmlLoader.loadXML(JRXmlLoader.java:297)
    ... 42 more
Caused by: java.lang.NullPointerException
    at java.net.URL.<init>(URL.java:524)
    ... 53 more

Answer 1

由于缺少jrxml文件，可能会出现异常。

你必须确保无论你在哪里部署你的JAR文件（不能清楚地理解），这个相对路径和文件（没有前面的斜杠！）都存在：

Users/Kashif/Desktop/Muhammad Kashif/Documents/NetBeansProjects/Torch/Reports/report11.jrxml

例如，如果您在主路径中的Linux服务器上部署，则必须确保

中有文件

/home/username/Users/Kashif/Desktop/Muhammad Kashif/Documents/NetBeansProjects/Torch/Reports/report11.jrxml

在Windows上，您必须确保文件位于目录结构下方，例如

C:\mypath\java -jar xyz.jar

C:\mypath\java\Users/Kashif/Desktop/Muhammad Kashif/Documents/NetBeansProjects/Torch/Reports/report11.jrxml

将jesperReports添加到java中的Jar文件中以运行其他计算机

1 个答案: