异常信息java.lang.IllegalStateException:Thecorrespondingproviderforthemerchantalreadyexists.原因这个错误是微信SDK抛出的，这是因为微信支付apiV3的RSAConfig重复build导致，即RSAConfig要保证是单例才不会导致报错。//要保证这个Config在服务中单例privateRSAAutoCertificateConfigconfig;@AutowiredpublicvoidsetConfig(){config=newRSAAutoCertificateConfig.Builder().merch
运行时错误“已经有一个与此命令关联的打开的数据读取器必须先关闭”objCommand=newSqlCommand("SELECTfield1,field2FROMsourcetable",objConn);objDataReader=objCommand.ExecuteReader();while(objDataReader.Read()){objInsertCommand=newSqlCommand("INSERTINTOtablename(field1,field2)VALUES(3,'"+objDataReader[0]+"')",objConn);objInsertComman
运行时错误“已经有一个与此命令关联的打开的数据读取器必须先关闭”objCommand=newSqlCommand("SELECTfield1,field2FROMsourcetable",objConn);objDataReader=objCommand.ExecuteReader();while(objDataReader.Read()){objInsertCommand=newSqlCommand("INSERTINTOtablename(field1,field2)VALUES(3,'"+objDataReader[0]+"')",objConn);objInsertComman
我正在尝试安装Microsoft.Bcl.Build1.0.14nuget返回Installing'Microsoft.Bcl.Build1.0.14'.Successfullyinstalled'Microsoft.Bcl.Build1.0.14'.Adding'Microsoft.Bcl.Build1.0.14'toLeadTracker.Calendar.Uninstalling'Microsoft.Bcl.Build1.0.14'.Successfullyuninstalled'Microsoft.Bcl.Build1.0.14'.Installfailed.Rollingba
我正在尝试安装Microsoft.Bcl.Build1.0.14nuget返回Installing'Microsoft.Bcl.Build1.0.14'.Successfullyinstalled'Microsoft.Bcl.Build1.0.14'.Adding'Microsoft.Bcl.Build1.0.14'toLeadTracker.Calendar.Uninstalling'Microsoft.Bcl.Build1.0.14'.Successfullyuninstalled'Microsoft.Bcl.Build1.0.14'.Installfailed.Rollingba
我创建了一个空的Asp.NetMVC3项目，并使用了nugetinstall-packageNinject.MVC3不做任何其他事情(没有注册服务，甚至没有创建Controller)我运行应用程序。项目在NinjectMVC3.cs的第22行中断，但出现以下异常:[InvalidOperationException:AlreadyInitialized!]Ninject.Web.Mvc.Bootstrapper.Initialize(Func`1createKernelCallback)inc:\Projects\Ninject\Maintenance2.2\ninject.web.m
我创建了一个空的Asp.NetMVC3项目，并使用了nugetinstall-packageNinject.MVC3不做任何其他事情(没有注册服务，甚至没有创建Controller)我运行应用程序。项目在NinjectMVC3.cs的第22行中断，但出现以下异常:[InvalidOperationException:AlreadyInitialized!]Ninject.Web.Mvc.Bootstrapper.Initialize(Func`1createKernelCallback)inc:\Projects\Ninject\Maintenance2.2\ninject.web.m
项目场景：`项目场景：因需要无线调试（adb)问题描述adb在已经连接上的情况下提示设备离线：C:\Users\Administrator>adbtcpip5555restartinginTCPmodeport:5555C:\Users\Administrator>adbconnect10.0.0.21alreadyconnectedto10.0.0.21:5555C:\Users\Administrator>adbshelladb.exe:deviceoffline解决方案：1.这时可以先断开连接再连，可能就好了C:\Users\Administrator>adbdisconnect10.0
我有这个遗留代码:privatevoidconecta(){if(conexao.State==ConnectionState.Closed)conexao.Open();}publicListget_dados_historico_verificacao_email_WEB(stringemail){Listhistoricos=newList();conecta();sql=@"SELECT*FROMhistorico_verificacao_emailWHEREnm_email='"+email+@"'ORDERBYdt_verificacao_emailDESC,hr_veri
我有这个遗留代码:privatevoidconecta(){if(conexao.State==ConnectionState.Closed)conexao.Open();}publicListget_dados_historico_verificacao_email_WEB(stringemail){Listhistoricos=newList();conecta();sql=@"SELECT*FROMhistorico_verificacao_emailWHEREnm_email='"+email+@"'ORDERBYdt_verificacao_emailDESC,hr_veri
