birt报表报错， There is no report design object available.org.eclipse.birt.report.exception.ViewerExcepti

报错信息例如以下：

-
There is no report design object available.

org.eclipse.birt.report.exception.ViewerException: There is no report design object available.

	at org.eclipse.birt.report.context.ViewerAttributeBean.__init(ViewerAttributeBean.java:226)

	at org.eclipse.birt.report.context.BaseAttributeBean.init(BaseAttributeBean.java:233)

	at org.eclipse.birt.report.context.ViewerAttributeBean.<init>(ViewerAttributeBean.java:118)

	at org.eclipse.birt.report.context.BirtContext.__init(BirtContext.java:44)

	at org.eclipse.birt.report.context.BaseContext.<init>(BaseContext.java:69)

	at org.eclipse.birt.report.context.BirtContext.<init>(BirtContext.java:30)

	at org.eclipse.birt.report.servlet.ViewerServlet.__getContext(ViewerServlet.java:150)

	at org.eclipse.birt.report.servlet.BirtSoapMessageDispatcherServlet.doGet(BirtSoapMessageDispatcherServlet.java:151)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)

	at org.apache.axis.transport.http.AxisServletBase.service(AxisServletBase.java:327)

	at javax.servlet.http.HttpServlet.service(HttpServlet.java:723)

	at org.eclipse.birt.report.servlet.BirtSoapMessageDispatcherServlet.service(BirtSoapMessageDispatcherServlet.java:122)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

	at com.opensymphony.webwork.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:177)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)

	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)

	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)

	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)

	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)

	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)

	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861)

	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:606)

	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)

	at java.lang.Thread.run(Unknown Source)

出现了这个错误顿时晕了，因为刚接触birt报表。不知道从那里入手，后经过百度和请教人，总结了例如以下的解决方法：

因为公司创建birt报表的版本号较低为2.6.2，我如今用的是4.4.2版本号。因为版本号不一致引起的错误。注意报表文件的开头：

<report xmlns="http://www.eclipse.org/birt/2005/design" version="3.2.23" id="1">
    <property name="comments">版权全部 (c) 2006 <<此处是您公司的名称>></property>
    <property name="createdBy">Eclipse BIRT Designer Version 4.4.2.v201410272105 Build <4.4.2.v20150217-1805></property>

report节点的属性version的值为：3.2.23。此时我用的birt的版本号为4.4.2（version相应为3.2.23），而公司用的是2.6.2（version相应为3.2.22）。仅仅须要将version的值改动为低版本号即可（3.2.22）即可，只是建议改动下name="createBy"的property节点的文本值（这个修不改动都不会报错的），改为曾经的文本值（改动birt报表文件之前建议将这个值先保存下来）。避免发生混淆。改动后例如以下：

<?xml version="1.0" encoding="UTF-8"?>
<report xmlns="http://www.eclipse.org/birt/2005/design" version="3.2.22" id="1">
    <property name="comments">版权全部 (c) 2006 <<此处是您公司的名称>></property>
    <property name="createdBy">Eclipse BIRT Designer Version 2.6.2.r262_v20110209 Build <2.6.2.v20110214-1523></property>

这些改动应该依据你自己的实际情况进行改动，上面仅仅是以我自己的为例。