When developing Vue, the replaceall function is used, and there is no problem debugging on the PC side
However, when packaging and deploying to the mobile end test, it is found that some pages are blank and the console only displays error {}
After troubleshooting, the replaceall function reports an error. Replace it with replace
Problem Description:
The script code is as follows:
#!/bin/bash
for i in node1 node2 node3
do
echo "======== $i =========="
ssh $i "jps" | grep -v Jps
done
The error message is as follows:
Solution:
Execute the following command: cat/etc/profile & gt& gt; ~/. Bashrc (each machine needs to execute)
the operation results are as follows:
1. Questions:
resolvent:
Modify the Django/views/debug.py file as follows: encoding =’utf-8 ‘
The MAC system installs MySQL client, and the error is solved_ config not found
Using PIP3 install MySQL_ Client error
The error message is as follows: prompt: oserror: MySQL_ config not found
python setup.py egg_ info Check the logs for full command output
mysql_ Config not found
Solve the problem according to the error report
Prompt that the file does not exist. Use find to find the file and verify whether the file exists
find/- name MySQL_ Config
you can see that the file exists. It is preliminarily judged that the environment variable 
is not configured
resolvent
Add the queried address to the environment variable
export path = $path:/usr/local/mysql-5.6.38-macos10.12-x86_ 64/bin
Verify again
Download again, the prompt is successful, and the problem is solved 
Problem regression
Because MySQL has been downloaded before, the environment variable configuration may be deleted when operating other contents. This method is not applicable to all cases
I checked the Internet for a long time and basically said that the path of imread() was wrong
Later, I saw under a comment that opencv4.5.1 needs to be removed Linker – input – attach dependencies Opencv in_ world451.lib
After deletion, the picture can be read normally
After using C + + to implement some algorithm functions, there is an error when calling Python:
AttributeError: /..../libHessian4Nii.so: undefined symbol: callVesselSegNiiAccording to Du Niang, it is because the function name will be renamed in the C + + compiled file (which is convenient to realize the overload function), so the function name cannot be found when calling the script.
The solution is to use extern “C” Just enclose the header file to be exposed. Examples are as follows:
extern "C"{
int callVesselSegNii(char* oriNiiFile, char* maskNiiFile, char* save_path);
}
After recompilation, call the normal!!!!
1. Enter file settings compiler java compiler
Modifying the configuration:
use compiler: change javac to eclipse
select “processed on errors” in eclipse options
Change project bytecode version to 6
Enter project configuration: project structure – & gt; Project -& gt; Project name interface
Setting: Project language level: setting 6 version
Set run/debug configurations
Run/Debug Configurations
For web projects, set “before launch” to “make, no error check” (the default should be make)
for ordinary projects, set “before launch” to “build, no error build” (the default should be build)
Return to the editing area and click build – & gt; build Project
QT error expected: ‘before’ qmessagelogger ‘?
Metaphysical problems:
on November 4, 2021, compilation repeatedly reported errors. Expected ‘:’ before ‘qmessagelogger’:
Unable to find the reason, and then waited for a while, this error suddenly appeared:
Add a semicolon “:” and compile it. It’s very interesting…
Problems encountered when nuxt uses image lazy loading, when & lt; lazy-component> tag is still normal, but after it is used, more than 40 exceptions will be prompted directly
found later. It needs to be found in & lt; lazy-component> & lt; no-ssr> label is good
<no-ssr>
<lazy-component>
...
</lazy-component>
</no-ssr>
Personal blog address: nuxt uses pictures to load lazy component tags and reports an error
Execute CD build & amp& amp; Ninja error reporting
Cause analysis: dpdk relies on a higher version of Libpcap. The version of Libpcap carried in Python 3 is lower, so an error will be reported
terms of settlement
1、cd/home/haohan/software/PF_ Ring-6.6.0/userland/libpcap; Execute make install compilation
2. Execute ldconfig
3. Re execute CD build & amp& amp; ninja
I made a mistake in migrating data times:
[error]: error inserting data
Error SQLCode：[-271]
Error message:Could not insert new row into the table:(-271) ISAM error:no free disk space(-131)
After checking the storage space, it is found that the space is free. After inquiry, it is found that the database built by Informix will often report an error when importing a large amount of data.
You can search for settings about Informix’s extend size and next size.
How Informix determines the extent size and next size_ The growth of database technology… – CSDN blog
Then my solution is as like as two peas: i migrated data, so I set up a table structure that is exactly the same as the database to be migrated in the destination database, but the value of extent size and next size is needed to build the table statement. For example, if I want to migrate a 34 g table, set the value of my extent size to 33554430 (the default unit is KB, which is the maximum value, 32g) and the next size to 1048576 (1 g or 2 g). Of course, the table space is extensible.
Create table table name（
id CHAR（64），
age INTEGER
）
extent size 33554430 next size 1048576;
In tablespace name;
The values of ext size and next size are about the same as the data size, because my table space is extensible. If it is not extensible, it is better to be larger than the data size.
Props value transfer – International Language – error reporting problem
The calling component finds that the label is dead. Because it wants to be lazy, it plans to transfer the value of the label to the value assignment through props.
props: {
labelName: {
type: String,
default: this.$t('common_rpt_department')
}
},`
If you write directly at the beginning, an error is reported on the page
solution:
props: {
labelName: {
type: String,
default () {
return this.$t('common_rpt_department')
}
}
},
Done!