Problem phenomenon
Google Chrome, click the back button to prompt: ERR_CACHE_READ_FAILURE error
Solution
1. chrome://flags/#enable-simple-cache-backend
2. default -> enableHow to Solve Chrome error: ERR_CACHE_READ_FAILURE
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Author Archives: Robins
How to Solve MYSQL Error: No module named MySQLdb
How to Solve MYSQL Error: No module named MySQLdb?
Solution
easy_install mysql-python (mix os)
pip install mysql-python (mix os/ python 2)
pip install mysqlclient (mix os/ python 3)
apt-get install python-mysqldb (Linux Ubuntu, ...)
cd /usr/ports/databases/py-MySQLdb && make install clean (FreeBSD)
yum install MySQL-python (Linux Fedora, CentOS ...)[Solved] pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available
pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available
How to Solve this error?
Solution:
brew update && brew upgrade
brew uninstall --ignore-dependencies openssl; brew install https://github.com/tebelorg/Tump/releases/download/v1.0.0/openssl.rbCaused by: com.ibatis.common.xml.NodeletException: Error parsing XML. Cause: org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 281; The content of element type “sqlMapConfig” is incomplete
It can be clearly seen from the error message that this is a problem on sql
Well, in general, there are many reasons for this problem:
1. Maybe the code call method in your service is wrong (this is the lowest level error, and it is not easy to find…), directly above
Originally it was written as MMIC01.delete, which was my careless (no flash, haha)
2. It is also possible that one of your SQL statements is wrong (this is easier to find)
Compared with the previous question, this error is already executing the SQL statement, so you can put the executed SQL statement in the tool and run it, and you will know where the problem is.
Cause: java.sql.SQLException: ORA-01407: Unable to update (“MESIRJ”.”TMMIC01″.”RDEL”) is NULL
As shown in the figure, the error reported when the delete operation is executed
It has been prompted that the sql exception caused by the “rdel” field is null, just set the value of the rdel field when deleting it!
[Go] Provide http service with two requests and process favicon.ico
When the http package is used, the mode processing of /this root path is registered, and the browser will automatically request favicon.ico. Be careful to handle it, otherwise there will be two requests
func main() { log.Println( " listen on 8080...\r\ nAccess : http://127.0.0.1:8080 " ) // root path http.HandleFunc( " / " , index) http.ListenAndServe( " :8080 " , nil) } // Home page jump func index(w http.ResponseWriter, r * http.Request) { if r.URL.RequestURI() == " /favicon.ico " { return } }
[PHP] Array to string conversion error when sending data in post
When using curl to pass post data, if the data field is an array, an error will be reported Array to string conversion
When calling curl_setopt_array($curl, $options);
Call curl_setopt($ch, CURLOPT_POSTFIELDS, $data)
Errors may be reported in these two places, the solution is to process the data array
http_build_query($data)
How to Solve PHP Error: no package’oniguruma’ found
When compiling and installing php, if –enable-mbstring, the mbstring extension is enabled, this regular processing library is required
centos
yum install http: // rpms.remirepo.net/enterprise/7/remi/x86_64 // oniguruma5-6.9.4-1.el7.remi.x86_64.rpm yum install http: // rpms.remirepo.net/enterprise/ 7/remi/x86_64 // oniguruma5-devel-6.9.4-1.el7.remi.x86_64.rpm
ubuntu
apt install libonig-dev[PHP] Solve the limitation of uploading files in nginx php 413 Request Entity Too Large
Increase in the nginx configuration http block
client_max_body_size 200m;
Added to the php.ini configuration file of php-fpm:
upload_max_filesize = 200M
If you don’t know where the php.ini under fpm is, you can directly grep upload_max_filesize -R /etc/php to find the location
[PHP] php8 jit does not support 32-bit systems WARNING: JIT not supported by host architecture
The jit of php8 needs to be manually turned on when compiling the opcache extension
For example, my php8 source code directory is here:
/home/ubuntu/myphp/php-8.0.0alpha1/ext/opcache
carried out
./configure –enable-opcache-jit –with-php-config=/usr/local/php8/bin/php-config
There will be a warning
WARNING: JIT not supported by host architecture
View configuer script
x86_64 only works, the others will be detected but
[Go] Solve can’t load package: cannot find module providing package github.com/xxxxx
When I execute go install github.com/xxxxx, I get an error:
can’t load package: cannot find module providing package github.com/xxx: working directory is not part of a module
Use the go module to solve the dependency problem
Execute it
go mod init
[GO]Solve request origin not allowed by Upgrader.CheckOrigin websocket cross-domain
Using websocket under the gin framework, this error will be reported if it is a cross-domain request
request origin not allowed by Upgrader.CheckOrigin
The websocket library used is “github.com/gorilla/websocket”
Need to add the following code:
upgrader = websocket.Upgrader{ ReadBufferSize: 1024 , WriteBufferSize: 1024 , // Resolve cross-domain problems CheckOrigin: func(r *http.Request) bool { return true }, }