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marshan：
http://abelzcg.iteye.com/ 是你的另一 ...
JBoss Seam从头学到脚之20---基本功之再练习 -
marshan：
我用了不到1个小时拜读了你20篇的心血之作。
能感觉到你的认真 ...
JBoss Seam从头学到脚之20---基本功之再练习
继续学习seam中自带的例子，今天学习的是itext，是一个关于处理pdf文件的例子。
“todo”的部分日后在慢慢研究，呵呵。
步骤如下
- 创建一个“itext”的seam web project。
- 拷贝~~\examples\itext\src\org\jboss\seam\example\pdf下的java文件，到自己的工程中，并修正java错误。
- 拷贝~~\examples\itext\view下的所有文件到自己工程的“webContent”下。
- 拷贝examples\itext\resources\WEB-INF下的4个xml文件到，自己的“WEB-INF”下面，覆盖掉同名文件。
- 从seam的路径中的lib目录下，拷贝itext.jar,jboss-seam-ui.jar，jboss-seam-pdf.jar，itext-rtf.jar，jfreechart.jar，jcommon.jar，到jboss路径下的common\lib下面。
未理解点：
-
pdf.keystore文件的作用及位置？
//todo -
form.xhtml文件，如果不改动会有下面的错误
错误log代码
- java.lang.NullPointerException
- at com.lowagie.text.pdf.RandomAccessFileOrArray.InputStreamToArray(Unknown Source)
- at com.lowagie.text.pdf.RandomAccessFileOrArray.<init>(Unknown Source)
- at com.lowagie.text.pdf.PdfReader.<init>(Unknown Source)
- at com.lowagie.text.pdf.PdfReader.<init>(Unknown Source)
- at org.jboss.seam.pdf.ui.UIForm.encodeBegin(UIForm.java:51)
- at javax.faces.component.UIComponent.encodeAll(UIComponent.java:928)
- at javax.faces.component.UIComponent.encodeAll(UIComponent.java:933)
- at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:592)
- at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108)
- at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:196)
- at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:110)
- at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
- at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
- at javax.faces.webapp.FacesServlet.service(FacesServlet.java:266)
- at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
- at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
- at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
- at org.jboss.seam.web.IdentityFilter.doFilter(IdentityFilter.java:40)
- at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
- at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:90)
- at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
- at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
- at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
- at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
- at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
- at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:177)
- at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:267)
- at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:380)
- at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:507)
- at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:56)
- at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
- at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58)
- at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
- at org.jboss.seam.web.HotDeployFilter.doFilter(HotDeployFilter.java:53)
- at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
- at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
- at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
- at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
- at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
- 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:235)
- at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
- at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190)
- at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)
- at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
- at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
- at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
- at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
- at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
- at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
- at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
- at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:828)
- at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:601)
- at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
- at java.lang.Thread.run(Unknown Source)
java.lang.NullPointerException at com.lowagie.text.pdf.RandomAccessFileOrArray.InputStreamToArray(Unknown Source) at com.lowagie.text.pdf.RandomAccessFileOrArray.<init>(Unknown Source) at com.lowagie.text.pdf.PdfReader.<init>(Unknown Source) at com.lowagie.text.pdf.PdfReader.<init>(Unknown Source) at org.jboss.seam.pdf.ui.UIForm.encodeBegin(UIForm.java:51) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:928) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:933) at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:592) at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108) at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:196) at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:110) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100) at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:266) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83) at org.jboss.seam.web.IdentityFilter.doFilter(IdentityFilter.java:40) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:90) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:177) at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:267) at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:380) at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:507) at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:56) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.HotDeployFilter.doFilter(HotDeployFilter.java:53) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) 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:235) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92) at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126) at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:828) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:601) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Unknown Source)
如果把
URL="form.pdf"
改成
URL=http://localhost:8080/itext/form.pdf
报出的错误变成。错误log代码
- java.io.IOException: PDF header signature not found.
- at com.lowagie.text.pdf.PRTokeniser.checkPdfHeader(Unknown Source)
- at com.lowagie.text.pdf.PdfReader.readPdf(Unknown Source)
- at com.lowagie.text.pdf.PdfReader.<init>(Unknown Source)
- at com.lowagie.text.pdf.PdfReader.<init>(Unknown Source)
- at org.jboss.seam.pdf.ui.UIForm.encodeBegin(UIForm.java:54)
- at javax.faces.component.UIComponent.encodeAll(UIComponent.java:928)
- at javax.faces.component.UIComponent.encodeAll(UIComponent.java:933)
- at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:592)
- at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108)
- at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:196)
- at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:110)
- at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
- at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
- at javax.faces.webapp.FacesServlet.service(FacesServlet.java:266)
- at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
- at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
- at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
- at org.jboss.seam.web.IdentityFilter.doFilter(IdentityFilter.java:40)
- at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
- at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:90)
- at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
- at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
- at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
- at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
- at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
- at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:177)
- at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:267)
- at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:380)
- at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:507)
- at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:56)
- at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
- at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58)
- at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
- at org.jboss.seam.web.HotDeployFilter.doFilter(HotDeployFilter.java:53)
- at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
- at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
- at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
- at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
- at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
- 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:235)
- at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
- at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190)
- at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)
- at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
- at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
- at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
- at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
- at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
- at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
- at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
- at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:828)
- at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:601)
- at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
- at java.lang.Thread.run(Unknown Source)
java.io.IOException: PDF header signature not found. at com.lowagie.text.pdf.PRTokeniser.checkPdfHeader(Unknown Source) at com.lowagie.text.pdf.PdfReader.readPdf(Unknown Source) at com.lowagie.text.pdf.PdfReader.<init>(Unknown Source) at com.lowagie.text.pdf.PdfReader.<init>(Unknown Source) at org.jboss.seam.pdf.ui.UIForm.encodeBegin(UIForm.java:54) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:928) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:933) at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:592) at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108) at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:196) at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:110) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100) at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:266) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83) at org.jboss.seam.web.IdentityFilter.doFilter(IdentityFilter.java:40) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:90) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:177) at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:267) at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:380) at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:507) at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:56) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.web.HotDeployFilter.doFilter(HotDeployFilter.java:53) at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69) at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) 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:235) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92) at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126) at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:828) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:601) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Unknown Source)
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2009-04-21 21:48 13741:创建一个seam工程，工程类型选择如下图 ... -
JBoss Seam从头学到脚之1---事前准备及配置
2009-04-21 21:46 1411关于seam是什么，以及优缺点网络上有很多讲解，我这里 ...
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