在Jaspersoft Studio中工作的天数函数，但与JasperReports函数库无关

Question

我几乎没有报告使用内置函数DAYS（DATE1，DATE2）来计算两个日期之间的天数。

我的表达是(DAYS(new SimpleDateFormat("dd/MM/yyyy").parse($F{DATE_DEBUT_ABSENCE}),new SimpleDateFormat("dd/MM/yyyy").parse($V{date_fin_sejour}))+1).

它运作良好，并没有对JasperSoft这个工作室6.4.0，但错误，当我尝试生成的JasperReports 6.2.0同一份报告中，我有一个错误：

net.sf.jasperreports.engine.fill.JRExpressionEvalException: Error evaluating expression for source text: DAYS(new SimpleDateFormat("dd/MM/yyyy").parse($F{DATE_DEBUT_ABSENCE_1}),new SimpleDateFormat("dd/MM/yyyy").parse($V{date_de_fin_absence}))+1 
- UUID : D22C5C66-1B4F-4DF4-BD44-1E639D1F5197 
com.mysoftware.core.shared.exception.SysException: net.sf.jasperreports.engine.fill.JRExpressionEvalException: Error evaluating expression for source text: DAYS(new SimpleDateFormat("dd/MM/yyyy").parse($F{DATE_DEBUT_ABSENCE_1}),new SimpleDateFormat("dd/MM/yyyy").parse($V{date_de_fin_absence}))+1 
at sun.reflect.GeneratedConstructorAccessor1706.newInstance(Unknown Source) 
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) 
at java.lang.reflect.Constructor.newInstance(Constructor.java:526) 
at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.instantiate(ServerSerializationStreamReader.java:1110) 
at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.deserialize(ServerSerializationStreamReader.java:682) 
at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.readObject(ServerSerializationStreamReader.java:592) 
at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader$ValueReader$8.readValue(ServerSerializationStreamReader.java:149) 
at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.deserializeValue(ServerSerializationStreamReader.java:434) 
at com.google.gwt.user.server.rpc.RPC.decodeRequest(RPC.java:312) 
at com.mysoftware.core.server.service.RemoteServiceDispatcher.processCall(RemoteServiceDispatcher.java:64) 
at com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:373) 
at com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:62) 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:751) 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:844) 
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:280) 
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:254) 
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:136) 
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:341) 
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:25) 
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:79) 
at com.mysoftware.core.server.servlet.filter.RoutingFilter.doFilter(RoutingFilter.java:93) 
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:79) 
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) 
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:79) 
at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27) 
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:79) 
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3367) 
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3333) 
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321) 
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120) 
at weblogic.servlet.provider.WlsSubjectHandle.run(WlsSubjectHandle.java:57) 
at weblogic.servlet.internal.WebAppServletContext.doSecuredExecute(WebAppServletContext.java:2220) 
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2146) 
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2124) 
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1564) 
at weblogic.servlet.provider.ContainerSupportProviderImpl$WlsRequestExecutor.run(ContainerSupportProviderImpl.java:254) 
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:295) 
at weblogic.work.ExecuteThread.run(ExecuteThread.java:254) 

而pom.xml中

<dependency> 
     <groupId>net.sf.jasperreports</groupId> 
     <artifactId>jasperreports</artifactId> 
     <version>6.2.0</version> 
     <exclusions> 
      <exclusion> 
       <artifactId>ecj</artifactId> 
       <groupId>org.eclipse.jdt.core.compiler</groupId> 
      </exclusion> 
      <exclusion> 
       <groupId>bouncycastle</groupId> 
       <artifactId>bcmail-jdk14</artifactId> 
      </exclusion> 
      <exclusion> 
       <groupId>bouncycastle</groupId> 
       <artifactId>bcprov-jdk14</artifactId> 
      </exclusion> 
     </exclusions> 
    </dependency> 
    <dependency> 
     <groupId>net.sf.jasperreports</groupId> 
     <artifactId>jasperreports-functions</artifactId> 
     <version>6.2.0</version> 
    </dependency> 

我用JAVA作为表达式语言

该表达式如何在Jaspersoft Studio上正常工作而不是在JasperReports上正常工作？

Answer 1

谢谢大家，特别是@AlexK谁搜索图书馆。

问题不在于缺少jasperreports函数库，而是由jasperreports函数在DAYS（），YEARS（）和MONTHS（）方法中使用的缺少joda时间库。 加入https://github.com/JodaOrg/joda-time/releases/download/v2.9.9/joda-time-2.9.9.jar解决了我的问题。