100分求解：在portlet中使用BIRT写WORD文档时抛出java.awt.HeadlessException

[lilVon]

问题比较复杂
我在做的项目使用了如下组件：
liferay portal 4.1
birt 2.2rc0
jdk版本为1.5

在使用birt写word文档时出现了以下异常：
Caused by: java.lang.ExceptionInInitializerError
at org.eclipse.birt.report.engine.emitter.wpml.WordEmitter.accountPageProp(WordEmitter.java:348)
at org.eclipse.birt.report.engine.emitter.wpml.WordEmitter.startPage(WordEmitter.java:193)
at org.eclipse.birt.report.engine.layout.html.HTMLPageLM.start(HTMLPageLM.java:188)
at org.eclipse.birt.report.engine.layout.html.HTMLPageLM.layoutChildren(HTMLPageLM.java:138)
at org.eclipse.birt.report.engine.layout.html.HTMLPageLM.layout(HTMLPageLM.java:84)
at org.eclipse.birt.report.engine.layout.html.HTMLReportLayoutEngine.layout(HTMLReportLayoutEngine.java:90)
at org.eclipse.birt.report.engine.api.impl.RenderTask$PageRangeRender.render(RenderTask.java:532)
at org.eclipse.birt.report.engine.api.impl.RenderTask.render(RenderTask.java:254)
... 178 more
Caused by: java.awt.HeadlessException
at sun.awt.HeadlessToolkit.getScreenResolution(HeadlessToolkit.java:189)
at org.eclipse.birt.report.engine.emitter.wpml.WordUtil.<clinit>(WordUtil.java:19)
... 186 more
15:36:39,187 ERROR [jsp:52] java.awt.HeadlessException
at sun.awt.HeadlessToolkit.getScreenResolution(HeadlessToolkit.java:189)
at org.eclipse.birt.report.engine.emitter.wpml.WordUtil.<clinit>(WordUtil.java:19)
at org.eclipse.birt.report.engine.emitter.wpml.WordEmitter.accountPageProp(WordEmitter.java:348)
at org.eclipse.birt.report.engine.emitter.wpml.WordEmitter.startPage(WordEmitter.java:193)
at org.eclipse.birt.report.engine.layout.html.HTMLPageLM.start(HTMLPageLM.java:188)
at org.eclipse.birt.report.engine.layout.html.HTMLPageLM.layoutChildren(HTMLPageLM.java:138)
at org.eclipse.birt.report.engine.layout.html.HTMLPageLM.layout(HTMLPageLM.java:84)
at org.eclipse.birt.report.engine.layout.html.HTMLReportLayoutEngine.layout(HTMLReportLayoutEngine.java:90)
at org.eclipse.birt.report.engine.api.impl.RenderTask$PageRangeRender.render(RenderTask.java:532)
at org.eclipse.birt.report.engine.api.impl.RenderTask.render(RenderTask.java:254)
at com.siemens.smc.portlet.example.ExamplePortlet.doView(ExamplePortlet.java:184)
at javax.portlet.GenericPortlet.doDispatch(GenericPortlet.java:235)
at javax.portlet.GenericPortlet.render(GenericPortlet.java:163)
at com.liferay.portal.kernel.servlet.PortletServlet.service(PortletServlet.java:94)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at com.siemens.smc.portlet.common.filter.SetUserToSessionFilter.doFilter(SetUserToSessionFilter.java:62)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)

请教解决方案，不胜感激！

[郭大侠_]

只能帮你顶一下了

[CathySun118]

太长了,说说解决办法

[lilVon]

谢谢楼上。。。问题主要是解决java.awt.HeadlessException
我搜了一下，基本上说是要在应用服务器的启动参数里加上-Djava.awt.headless=true
或者在servlet的init方法里加上System.setPorperty("java.awt.headless","true");
但是这两种方法我试了都不行

[lilVon]

已经解决了。。。其实在有显示环境的地方要设置成false。。。。。。。。。。

[ivy0221]

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