Liferay 文档管理

【问题标题】：Liferay Document ManagementLiferay 文档管理
【发布时间】：2014-08-07 10:37:19
【问题描述】：

我对 liferay 完全陌生。

我已经创建了 Liferay portlet，我需要在其中上传文档

我使用 DLUtil.addFile 方法从 web 服务和本地上传文档。我也成功上传了。但是当我再次尝试上传文档时，问题就来了。它显示 com.liferay.portlet.documentlibrary.DuplicateFileException

我的代码是

        long companyId = serviceContext.getCompanyId();
        File sampleChapter = (File) serviceContext.getAttribute("sampleChapter");
            String folderName = "Sample_Chapters";
            LMSUtil.createFolder(folderName, companyId);
            String filePath = folderName+StringPool.SLASH+fileName;
            System.out.println(filePath);
            try {
                DLStoreUtil.addFile(companyId, CompanyConstants.SYSTEM, filePath, sampleChapter);


            } catch (PortalException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (SystemException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }

我得到的错误是

com.liferay.portlet.documentlibrary.DuplicateFileException: D:\rajkumar\softwares\liferay\liferay-portal-6.2-ce-ga2\data\document_library\10154\0\Sample_Chapters\hello1.txt\1.0
    at com.liferay.portlet.documentlibrary.store.FileSystemStore.addFile(FileSystemStore.java:76)
    at com.liferay.portlet.documentlibrary.store.BaseStore.addFile(BaseStore.java:109)
    at com.liferay.portlet.documentlibrary.store.StoreProxyImpl.addFile(StoreProxyImpl.java:55)
    at com.liferay.portlet.documentlibrary.store.SafeFileNameStoreWrapper.addFile(SafeFileNameStoreWrapper.java:73)
    at com.liferay.portlet.documentlibrary.store.DLStoreImpl.addFile(DLStoreImpl.java:108)
    at com.liferay.portlet.documentlibrary.store.DLStoreImpl.addFile(DLStoreImpl.java:184)
    at com.liferay.portlet.documentlibrary.store.DLStoreUtil.addFile(DLStoreUtil.java:187)
    at com.slayer.service.impl.LMSBookLocalServiceImpl.attachFiles(LMSBookLocalServiceImpl.java:154)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:115)
    at com.liferay.portal.spring.transaction.DefaultTransactionExecutor.execute(DefaultTransactionExecutor.java:62)
    at com.liferay.portal.spring.transaction.TransactionInterceptor.invoke(TransactionInterceptor.java:51)
    at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:111)
    at com.liferay.portal.spring.aop.ServiceBeanAopProxy.invoke(ServiceBeanAopProxy.java:175)
    at com.sun.proxy.$Proxy414.attachFiles(Unknown Source)
    at com.slayer.service.impl.LMSBookServiceImpl.attachFiles(LMSBookServiceImpl.java:90)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:115)
    at com.liferay.portal.spring.transaction.DefaultTransactionExecutor.execute(DefaultTransactionExecutor.java:62)
    at com.liferay.portal.spring.transaction.TransactionInterceptor.invoke(TransactionInterceptor.java:51)
    at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:111)
    at com.liferay.portal.spring.aop.ChainableMethodAdvice.invoke(ChainableMethodAdvice.java:56)
    at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:111)
    at com.liferay.portal.spring.aop.ServiceBeanAopProxy.invoke(ServiceBeanAopProxy.java:175)
    at com.sun.proxy.$Proxy415.attachFiles(Unknown Source)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at com.liferay.portal.jsonwebservice.JSONWebServiceActionImpl._invokeActionMethod(JSONWebServiceActionImpl.java:318)
    at com.liferay.portal.jsonwebservice.JSONWebServiceActionImpl.invoke(JSONWebServiceActionImpl.java:71)
    at com.liferay.portal.jsonwebservice.JSONWebServiceServiceAction.getJSON(JSONWebServiceServiceAction.java:66)
    at com.liferay.portal.struts.JSONAction.execute(JSONAction.java:78)
    at com.liferay.portal.servlet.JSONServlet.service(JSONServlet.java:70)
    at com.liferay.portal.jsonwebservice.JSONWebServiceServlet.service(JSONWebServiceServlet.java:71)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
    at com.liferay.portal.kernel.servlet.PortalClassLoaderServlet.service(PortalClassLoaderServlet.java:103)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at com.liferay.portal.kernel.bean.ClassLoaderBeanHandler.invoke(ClassLoaderBeanHandler.java:67)
    at com.sun.proxy.$Proxy518.doFilter(Unknown Source)
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:165)
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96)
    at com.liferay.portal.kernel.servlet.PortalClassLoaderFilter.doFilter(PortalClassLoaderFilter.java:74)
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at com.liferay.portal.kernel.bean.ClassLoaderBeanHandler.invoke(ClassLoaderBeanHandler.java:67)
    at com.sun.proxy.$Proxy518.doFilter(Unknown Source)
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
    at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
    at com.liferay.portal.servlet.filters.authverifier.AuthVerifierFilter.processFilter(AuthVerifierFilter.java:169)
    at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
    at com.liferay.portal.kernel.servlet.PortalClassLoaderFilter.doFilter(PortalClassLoaderFilter.java:74)
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at com.liferay.portal.kernel.bean.ClassLoaderBeanHandler.invoke(ClassLoaderBeanHandler.java:67)
    at com.sun.proxy.$Proxy518.doFilter(Unknown Source)
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:165)
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96)
    at com.liferay.portal.kernel.servlet.PortalClassLoaderFilter.doFilter(PortalClassLoaderFilter.java:74)
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
    at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:96)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)

我只需要对上传的文档进行版本控制。请任何人帮助我解决问题。提前致谢

【问题讨论】：

    标签： version-control liferay document-management


    【解决方案1】：

    只要看一眼 API，您就会想检查是 hasFile 然后是 updateFile 否则是 addFile

    我正在使用不同的 API (DLAppServiceUtil) 执行类似的操作，并且考虑到使用 DLStoreUtil 时所需的参数较少，我将研究转换为这种方法。

    编辑：我看不到Documents and Media portlet 中通过DLStoreUtil 添加的文件夹/目录。我已经验证他们正确上传到/data/document_library 目录。对于我的特殊情况，我会坚持使用DLAppServiceUtil，因为文件需要在通过我的自定义 portlet 上传后通过该 portlet 进行管理。

    另请参阅：How do I use the different file storage and retrieval APIs in Liferay?

    【讨论】：

    • 感谢您的快速回复
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