Error starting userland proxy: listen tcp4 0.0.0.0:8848: bind: address already in use

The problem with this error message is that the port is occupied

View occupied port commands

netstat -tanlp

Kill the process (note that instead of killing the port, it is the port of PID)

kill 6046

This is the current solution

To mention something else, it’s actually because uploading jar package failed to start Nacos, because Tomcat failed to start. Later, docker’s Nacos is used to solve the problem. The later results are appropriate and can be used. Docker is still good, ha ha

Question

Analysis: according to the error prompt, it should be the problem of maven checkstyle plugin.

solve

Method 1: find the plug-in maven checkstyle plugin: 2.17 and add the skip attribute.

  Modify pom.xml

  Method 2: find the plug-in tag corresponding to maven checkstyle plugin: 2.17 and comment it out.

Clear the original target directory and recompile it!

When vs2012 installs automapper under. Net 4.0, the following error will be reported:

‘automapper’ already has a dependency defined for ‘standard. Library’.

‘AutoMapper’ already has a dependency defined for ‘Standard.Library’.

It is found that the nuget Version (version 2.83 of vs2012) is lower, and the standard. Library framework is not supported.

There are two solutions

Method 1
nuget 2.12 supports the. Net standard framework used by automapper 5.0.1 nuget package, so nuget needs to be upgraded to nuget 2.12 or above downgrade the version of automapper to nuget compatible with the current version. After testing, 4.1.1 is installed perfectly, and microsoft.bcl is installed along with it. Await and async of. Net4.5 can be used
PM & gt; Install-Package AutoMapper -Version 4.1.1
Installing ‘AutoMapper 4.1.1’.
Successfully installed ‘AutoMapper 4.1.1’.

reference resources:

http://majing.io/questions/557

Reproduced in: https://www.cnblogs.com/yanglang/p/7065049.html

In IE6, “res:// c://windows.system32.shdoclc.dll HTTP”_ 403.htm& http://.. (specific path) “is wrong. The reason is that my path in the background is “./admin/other directory”.

Where admin is in the root directory. In IE6, because “/” represents the root directory, another path will be added in front of the actual path.

Therefore, if the admin is already in the root directory and IE6, you only need to remove “/” and it can solve the problem.

This problem will lead to the following errors: 403 Forbidden, access forbidden, etc.

Reproduced in: https://www.cnblogs.com/gowhy/archive/2011/07/05/2097924.html

Sad today

{0} cannot cast a COM object of type ‘Microsoft. Office. Interop. Word. Applicationclass’ to interface type’ Microsoft. Office. Interop. Word_ Application”。 This operation failed because the queryinterface call to the COM component of the interface with IID “{00020970-0000-0000-c000-000000000046}” failed with the following error: the library is not registered（ Exception from HResult: 0x8002801d (type_ E_ LIBNOTREGISTERED))。”}

My situation

1. Win10 + 64 bit
2. Re installed office2016, but previously uninstalled the professional version of office2016 and WPS

solve

Re install WPS, it’s OK.

Cause of error

WPS component conflicts with office component. This thing {00020970-0000-0000-c000-000000000046} may be related to WPS, and then I didn’t uninstall it completely. After the WPS is re installed, it will register the component, so no error will be reported.

reference resources

Thank you very much for your inspiration:
C # importing excel2010 has the problem of DLL loading failure or unregistered class library, 0x8002801d or 0x80029c4a

And, if you are not sure about the root cause of the error, you can try step by step:
failed to retrieve the component with CLSID {000209ff-0000-0000-c000-000000000046} in the com class factory, because of the following error: 80070005 denied access
there are four methods listed in this article. Of course, the simplest and most crude method is the last resort, which is to reload the system.

The exception prompt is as follows:
Microsoft Office Excel cannot access the file “*. XLS”. The possible reasons are:
1 the file name or path does not exist this is an unexplained error. Debugging on the local machine is normal, but once it is deployed to the server, it cannot be accessed

After checking some information, we found that everyone encountered this problem

The solution is to create a directory named desktop under the directory of C: windows, system32, config, systemprofile and C: windows, syswow64, config, systemprofile

For the problem that COM components cannot be accessed,
solution:
1.
1). Add simulation in webconfig and add administrator permissions,

2). In this way, you can start the application process, operate excel, create new EXCEL and export Excel, but you still can’t open the excel file on the server side
however, this method has a disadvantage: if you, If the crystal report is used in the project, the crystal report will be abnormal, so the handout is handled in the latter way
2.
in the component service, DOCM sets the attributes of Microsoft Excel application,
because it operates on a 64 bit system, docom does not have it by default in the component service, because Microsoft Excel application is a DCOM configuration of 32, So solve it in the following way (refer to step 3)

1) . start –> run –> CMD
2) at the command prompt, enter comexp.msc – 32 to open the 32 console
3). In the file menu, add and delete snap ins –> component services
4). Find “Microsoft Excel application” in “DCOM configuration”, right-click it, and then click “properties”, The “Microsoft Excel application properties” dialog box will pop up
5). Click the “identity” tab and select “interactive user”
6). Click the “security” tab, click “custom” on the “start and activate permissions”, and then click the corresponding “Edit” button to fill in a “network service” user in the pop-up “security” dialog box, And give it the “local start” and “local activation” permissions
7). It is still the “security” label. Click “custom” on the “access permission”, and then click “Edit”. In the pop-up “security” dialog box, a “network service” user is also added, Then give “local access” permission.
the specific figure is as follows:

        Recently, I wrote makefile,   Encountered the error nm: test. O: file format not recognized. Let’s see:

        test.h:

void output();

        test.cpp:

#include <stdio.h>#include "test.h"void output(){ printf("c is good\n");}

          compile:

xxxxxx:~/mkfile> g++ -c test.cpp test.h -o test.oxxxxxx:~/mkfile> nm test.onm: test.o: File format not recognizedxxxxxx:~/mkfile>

          Strange, isn’t it?The reason is that there are too many test. H files. There is no need at all. The compiler will find them automatically as long as you specify the directory.   If you change the order of test. H and test. CPP, you will be prompted:

xxxxxx:~/mkfile> g++ -c test.h test.cpp -o test.og++: cannot specify -o with -c or -S with multiple filesxxxxxx:~/mkfile> 

          We have already said that.

          It seems that when there is – O, you can go to – C to specify multiple files, which is a huge pit.

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