Today, when arcGIS is used for projection, it is mainly carried out in the WGS84 coordinate system.
But ArcGIS kept reporting errors.
Compared with various methods, this problem has not been solved.
And then finally, with the guidance of the great God, we found the root of the problem, it turned out that the latitude and longitude had been reversed, and the projection had to be longitude, latitude, something like that.
Let’s make sure that this doesn’t happen again.
Yesterday, I installed CentOS7 on my computer, and I also dropped the Win7 system. Since then, Only Centos is installed on my computer, which gives me a feeling of abandonment.
A HALT command tried to shut down the system, but found that the screen wasn’t black, that the machine wasn’t working, and that the power light was still on. So it did its best to hold down the power button and force it off.
When I came back the next night and started the machine, it was abnormal. After starting the machine, there was always an ATA Bus error. Please see the last picture for details.
How to do, Lao Tze did sth. for two or three hours, reinstalled three times the system is the same result! No way I’m white.
Finally search, omnipotent netizens said that the hard disk fault, but my hard disk is absolutely forced not to be broken… In the end,
I tried to solve my problem with one of my better tools, the CMOS discharge!
Think back, the last time I did this was ten years ago, and alas, how time flies… Beside the point.
Yes, open the case, take out the piece of electronics on the motherboard and put it in again. Restart it.
It’s a bloody lesson to shut down the halt command.
No, no, no, no, no, no, no, no, no, no, no, no, no, no, no, no, no, no, no, no, no, no, no, no, no, no, no, no, no, no, no. Finally, I have an error report.
Problem description
At present, there are only files apiclient_cert.p12 in the development group, but PHP projects need apiclient_cert.pem and apiclient_key.pem as the certificate of refund operation
After WeChat payment document at https://pay.weixin.qq.com/wiki/doc/api/tools/mch_pay.php?Chapter = command in 4_3
openssl pkcs12 -nocerts -in apiclient_cert.p12 -out apiclient_key.pem
After the operation, the exported file should not only enter the merchant ID as the password, but also set the password
And after importing the project, the project reports an error cURL error 58
The solution
The exported command is corrected to
openssl pkcs12 -nodes -clcerts -in apiclient_cert.p12 -out apiclient_key.pem
flutter: the program cannot be run. W/zipro ( 8904): Error opening archive D:…apk: Invalid file
ERROR: dump failed because resource AndroidManifest.xml not found
Failed to extract manifest from APK: ProcessException: The command failed
Command: C:\Users…\AppData\Local\Android\sdk\build-tools\29.0.3\aapt dump xmltree
D:…\build\app\outputs\apk\app.apk AndroidManifest.xml.
No application found for TargetPlatform.android_arm64.
Consider running “flutter create .” to create one.
Solution: Enter flutter clean where flutter run should be entered.
#Delay the zip operation for two seconds.
sleep 2s
#
for dsymFile in $(find "$DSYM_FOLDER" -name '*.dSYM'); do
RET="T"
echo "Found dSYM file: $dsymFile"The purpose was to delay the execution of the zip-r-j $DSYM_SYMBOL_ZIP_FILE $dsymfile-x *.plist command by 2 seconds.
Bugly provides the function of directly uploading dSYM files with script automatic configuration. However, when I was in XCODE10, I found that there was no corresponding dSYM file on the “Symbol Table Management” page of The Bugly website. After checking the script output at compile time of Xcode, I found the following error prompt:
zip error: Nothing to do! (…)
Error: Failed to upload the zip archive file.
FAILTURE – dSYM upload complete.
Failed to upload the dSYM
The crux of the above error is the first zip error: Nothing to do! . Because the zip did not compress successfully, *.dsym.zip could not be found to upload the symbol table.
zip error: Nothing to do! This means there is no file to compress and nothing to do.
After constant testing and speculation, it is thought that it may be the execution of the ZIP command, dSYM symbol table file is not generated, so no file can be compressed. Simply add a 2s delay command before zip, no longer report an error, and successfully upload Bugly.
But after all, this way is rude, just like adding a delay function in the iOS code without knowing when to refresh the interface, which is not reliable. But at least it solves my emergency.
Error 5 error LNK1120: 3 unresolved externals D:\Code\simpleTest-
mqo
\Debug\simpleTest-
mqo
.exe 1 1 simpleTest-
mqo
Error 4 error LNK2019: unresolved external symbol _
mqo
CallModel referenced in function “void __cdecl draw(void)” (?draw@@YAXXZ) D:\Code\simpleTest-
mqo
\simpleTest-
mqo
\
mqo
test. obj simpleTest-
mqo
Error 2 error LNK2019: unresolved external symbol _
mqo
CreateModel referenced in function “void __cdecl init(void)” (?init@@YAXXZ) D:\Code\simpleTest-
mqo
\simpleTest-
mqo
\
mqo
test. obj simpleTest-
mqo
Error 3 error LNK2019: unresolved external symbol _
mqo
Init referenced in function “void __cdecl init(void)” (?init@@YAXXZ) D:\Code\simpleTest-
mqo
\simpleTest-
mqo
\
mqo
test. obj simpleTest-
mqo
Warning 1 warning LNK4098: defaultlib ‘LIBCMTD’ conflicts with use of other libs; use /NODEFAULTLIB:library D:\Code\simpleTest-
mqo
\simpleTest-
mqo
\LINK simpleTest-
mqo
How to Fix this error?
Only the header files are included, but the corresponding library files are missing, resulting in functions that are only declared but not implemented.
The problem I have is that there are h and c files, but no lib and dll! !
I was puzzled and asked a colleague for help, and finally found the problem, I put the c file with the header file in include, when the link can not find the function definition, so the report error. The solution is to add both the h and c files to the project.
Use network monitoring software Cacti to detect the traffic of a server using SNMP service! I ran the command Yum-y install net-SNMP as usual and the results came up with some error messages! Repository metadata (repomd.xml) for Repository Is not possible.
The solution is as follows:
copy code
The code is as follows:
# cd /etc/
#ls
Find. Yum repos. D. this directory, a file inside a zl. ‘(your machine may not be the name, the name should be customized), vi baseurl=http://centos.ustc.edu.cn/centos/5/os/i386/ compile the inside address
Then #yum Clean All
After that: Yum-y install net-SNMP will install it!
command[check_load]=/usr/local/nagios/libexec/check_load -w 15.10.5 -c 30.25.20
command[check_mem]=/usr/local/nagios/libexec/check_mem.pl -w 10% -c 3%
command[check_disk]=/usr/local/nagios/libexec/check_disk -w 15% -c 7% -p /
command[check_swap]=/usr/local/nagios/libexec/check_swap -w 20% -c 10%
command[check_iostat]=/usr/local/nagios/libexec/check_iostat -w 6 -c 10
Using these commands on the client side to monitor the information on the client side,
If successful, this means that there is no problem with the client configuration. Generally speaking, there is no problem here, but there is no exception. The following two are client-side 
If the client problem is fixed and not fixed, the next step is to troubleshoot
Information about the server that is contained in the client configuration file
Such as: vi nrpe. CFG
Allowed_hosts = 172.30.71.20, 172.30.71.238
Add server IP, separated by English commas, no Spaces left or right of equal sign
Also, the check_NRPE plugin is not defined causing, of course, the Nagios server syntax check to error if it is not defined
Check grammar:
/etc/init.d/nagios checkconfig
Error message will be found:
Checking services…
Error: Service check Command ‘check_NRpe’ specified in Service ‘Swap Useage’ for host ‘197-etiantian-1-1’ not
defined anywhere!
Omit some.
Total Warnings: 0
Total Errors: 5
Check_nrpe’s plug-in configuration (server side) needs to be added to commands.cfg
CFG enters and shifts +g to the end to add the following.
# ‘check_nrpe’ command definition
define command{
command_name check_nrpe
command_line $USER1$/check_nrpe -H $HOSTADDRESS$ -c $ARG1$
}
At this point, re-execute the syntax check command:
Check grammar:
/etc/init.d/nagios checkconfig
Total Warnings: 0
Total Errors: 0
There are also some screening sites
1. Make sure that the versions of check_NRpe and nrPE daemon are the same.
RPMS — qa|grep openssl view
2. Verify that the check_nrpe and nrpe deamon sides enable or disable SSL support at the same time.
/ usr/local/nagios/bin/nrpe c/usr/local/nagios/etc/nrpe. The CFG – d – n
-n stands for not using SSL. To start SSL, start both sides; If you don’t start it, both sides will close; You cannot start and close at the same time
In this way
The protocol error indicates that the server 3389 port is open, but the 3389 port has been modified to another service port, that is, the remote terminal of the server has changed the port, you can go to the server to check whether this is the case. If 3389 is already occupied by another service application, then change the remote desktop port and use the modified port to log in!
Iis7 Remote Control:
A computer remote monitoring tool, IIS7 remote Desktop management is a professional remote desktop connection software, no installation. Easy to operate. Perfect interface design, powerful monitoring function, stable system platform, to meet the needs of users to achieve remote desktop connectivity.
1. Grouping function.
2. Import text format selection to prevent coding errors.
3, a single server to add manually.
4. Support feature search.
5. Reminder of expiration function.
6. Import server information with one click.
7. The program is automatically updated.
Reproduced in: https://my.oschina.net/u/4172372/blog/3085072
Today in the CMD environment
java Helloworld.java
javac Helloworld
If it doesn’t work, it shows up
Exception in thread "main" java.lang.UnsupportedClassVersionError: helloworld has been compiled by a more recent version of the Java Runtime (class file version 57.0), this version of the Java Runtime only recognizes class file versions up to 52.0
Error message.
after thinking about it, I probably made a java8 environment by playing mine craft before. Later, I downloaded and installed jdk13 for development, which caused the problems caused by the difference between javac and Java version.
then reset JAVA_HOME to C:\Program Files\Java\jdk-13 should be solved.
when something weird happens, still report this error. In a rage, I deleted
and reported an error after I deleted
directory which caused the conflict
Error: could not open `C:\Program Files\Java\jre1.8.0_201\lib\amd64\jvm.cfg
The problem should be clear, because I don’t know which environment variable is still pointing to this folder, I find the same problem in stackoverflow, where Jason Hughes mentioned that this guideline exists in C:\Program Files\Common Files\oracle\ folder, (my word is C:\Program Files(x86)\Common Files\oracle\), delete the directory directly and restart once it comes.
problem solved.
[ERROR] ERROR reading packet from Server: Lost Connection to MySQL Server during Query (server_errno=2013)
In general, three situations will lead to 2013 errors
1 Reverse parsing
2 Max_allowed_packet is inconsistent
3. Network Problems
The solution
1 Skip-name-resolve is forbidden to reverse resolve
Configure master slave max_allowed_packet with the same value
3 Adjust the value of net_write_TIMEOUT
A friend of mine reported a mistake in 2013 when I was writing notes. None of the three schemes mentioned above worked, and Lost Connection to MySQL Server appeared very timely. Finally, I found out that the network agent controlled the connection for more than 30 minutes and automatically hung up…