[opencms-dev] How to use CmsObject.writePropertyObject

[Xuan Wang]

hi everyone :
   I  use CmsObject.writePropertyObject to modify the property of my
Xmlpage file. I create CmsProperty use this code

       CmsProperty prop = new CmsProperty();
       prop.setAutoCreatePropertyDefinition(true);
       // set property name
       prop.setName(name);
       // set property value
       if (OpenCms.getWorkplaceManager().isDefaultPropertiesOnStructure()) {
           prop.setValue(value, CmsProperty.TYPE_INDIVIDUAL);
       } else {
           prop.setValue(value, CmsProperty.TYPE_SHARED);
       }

 Then I use writePropertyObject(java.lang.String
resourcename,CmsProperty property) function to modify page property.
 I write  title property of page ,can't succeed.
 the error are
javax.servlet.ServletException: Error writing property "Keywords" on
resource "/news/20060606/4.html".
       at org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:858)
       at org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:791)
       at org.apache.jsp.WEB_002dINF.jsp.offline.sites.default_.publish.test.showproperty_jsp._jspService(org.apache.jsp.WEB_002dINF.jsp.offline.sites.default_.publish.test.showproperty_jsp:132)
       at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
       at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
       at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
       at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
       at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
       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 org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
       at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:574)
       at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:499)
       at org.opencms.flex.CmsFlexRequestDispatcher.includeExternal(CmsFlexRequestDispatcher.java:194)
       at org.opencms.flex.CmsFlexRequestDispatcher.include(CmsFlexRequestDispatcher.java:170)
       at org.opencms.loader.CmsJspLoader.service(CmsJspLoader.java:433)
       at org.opencms.flex.CmsFlexRequestDispatcher.includeInternalWithCache(CmsFlexRequestDispatcher.java:423)
       at org.opencms.flex.CmsFlexRequestDispatcher.include(CmsFlexRequestDispatcher.java:174)
       at org.opencms.loader.CmsJspLoader.dispatchJsp(CmsJspLoader.java:467)
       at org.opencms.loader.CmsJspLoader.load(CmsJspLoader.java:412)
       at org.opencms.loader.CmsResourceManager.loadResource(CmsResourceManager.java:719)
       at org.opencms.main.OpenCmsCore.showResource(OpenCmsCore.java:1362)
       at org.opencms.main.OpenCmsServlet.doGet(OpenCmsServlet.java:151)
       at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
       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 org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
       at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
       at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
       at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
       at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
       at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
       at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
       at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:667)
       at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
       at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
       at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
       at java.lang.Thread.run(Thread.java:595)

please give me some suggest .
thank a lot

Regards
wang xuan