Question

因此，我尝试在Visual Studio 2015中安装Visual Studio扩展程序，但在尝试时遇到此安装错误：

System.NullReferenceException：未将对象引用设置为实例对象

奇怪的是，我可以在调试时在实验实例中运行扩展。

这是在安装日志中：

Beginning to install extension to Microsoft Visual Studio Professional 2015...
Install Error : System.NullReferenceException: Object reference not set to an instance of an object.
   at Microsoft.VisualStudio.ExtensionManager.ExtensionManagerService.CheckForValidDotNetFramework(IExtension extension)
   at Microsoft.VisualStudio.ExtensionManager.ExtensionManagerService.CheckForInstallBlockers(InstallableExtensionImpl extension, IInstalledExtensionList modifiedInstalledExtensionsList, Boolean isNestedExtension, Boolean& olderVersionInstalled)
   at Microsoft.VisualStudio.ExtensionManager.ExtensionManagerService.InstallInternal(InstallableExtensionImpl extension, Boolean perMachine, Boolean isNestedExtension, IDictionary`2 extensionsInstalledSoFar, List`1 extensionsUninstalledSoFar, IInstalledExtensionList modifiedInstalledExtensionsList, AsyncOperation asyncOp, UInt64 totalBytesToWrite, UInt64& totalBytesWritten, Boolean enforceCertificateCheckForUpgrade)
   at Microsoft.VisualStudio.ExtensionManager.ExtensionManagerService.BeginInstall(IInstallableExtension installableExtension, Boolean perMachine, AsyncOperation asyncOp, Boolean enforceCertificateCheckForUpgrade)
   at Microsoft.VisualStudio.ExtensionManager.ExtensionManagerService.InstallWorker(IInstallableExtension extension, Boolean perMachine, AsyncOperation asyncOp, Boolean enforceCertificateCheckForUpgrade)

我已经尝试过的事情：

修复Visual Studio
在另一台PC上试用（同样的错误）
尝试将其安装在safemode（devenv /safemode）
devenv /resetsettings
尝试通过双击安装vsix文件而不是通过专用扩展程序库
卸载扩展程序＆＃34; Developer Analytics工具＆＃34;
尝试使用旧版本的代码，我非常肯定曾经使用
检查所有引用，清理，重建
删除nuget包并读取它们（Newtonsoft.Json＆amp; 1 other）

请帮忙。

Answer 1

好了所以现在我检查了ExtensionManager.Implementation，并且从CheckForValidDotNetFramework方法我发现没有为扩展设置.NET Framework的Version范围。我可以在source.extension.vsixmanifest下Dependencies下的[4.6.1]中设置它，然后在将.NET框架更改为所有项目的Version range后，在@Service @PropertySource(value = "classpath:subscriberEventMapping.properties") public abstract class AbstractEventHandler implements IEventHandler { private String eventIdPattern; @Autowired Environment env; @Autowired(required = true) public void configureEventIdPattern() { String simpleClassName = this.getClass().getSimpleName(); String resolvedEventIdPattern = env.getProperty( simpleClassName.substring(0,1).toLowerCase() + simpleClassName.substring(1, simpleClassName.length())); this.eventIdPattern = resolvedEventIdPattern == null ? ".*" : resolvedEventIdPattern; } public String getEventIdPattern() { return eventIdPattern; } }中输入regExpEventHandler=^(901|909|998|1000)$ dummyEventHandler=^([1-9][0-9]{0,2}|1000)$。

如果日志中的错误消息哪个对象为空，那将会很有帮助。

尝试在VS 2015中安装Visual Studio扩展时出现NullReferenceException

1 个答案: