Question

当我从数据库中检索数据时，似乎没有问题。但是当我生成jasper报告时，它给出了以下Exception。这适用于MySQL，但不适用于MS-SQL。要求是MS-SQL。请帮我一个。为什么我们这样普遍得到这样的Excepton： -

Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: org/joda/time/ReadableInstant
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:264)
        at net.sf.jasperreports.engine.util.JRClassLoader.loadClassForRealName(JRClassLoader.java:157)
        at net.sf.jasperreports.engine.util.JRClassLoader.loadClassForName(JRClassLoader.java:115)
        at net.sf.jasperreports.functions.FunctionsBundle.addFunctionClass(FunctionsBundle.java:84)
        at net.sf.jasperreports.functions.FunctionsBundle.<init>(FunctionsBundle.java:54)
        at net.sf.jasperreports.functions.FunctionsRegistryFactory.createRegistry(FunctionsRegistryFactory.java:76)
        at net.sf.jasperreports.extensions.DefaultExtensionsRegistry.instantiateRegistry(DefaultExtensionsRegistry.java:239)
        at net.sf.jasperreports.extensions.DefaultExtensionsRegistry.loadRegistries(DefaultExtensionsRegistry.java:214)

Answer 1

检查classpath中是否存在以下依赖关系：

<dependency>
    <groupId>joda-time</groupId>
    <artifactId>joda-time</artifactId>
    <version>2.8<version>
</dependency>

Answer 2

您可以添加库jar（约旦时间），链接下载https://sourceforge.net/projects/joda-time/files/joda-time/2.4/

Answer 3

只需添加此jar文件 https://mvnrepository.com/artifact/joda-time/joda-time/2.8.1

线程“AWT-EventQueue-0”中的异常java.lang.NoClassDefFoundError：java.lang.Class.forName0上的org / joda / time / ReadableInstant（本机方法）

3 个答案: