If there are any errors, please correct them
Caused by: java.lang.IllegalStateException at android.media.MediaPlayer._ prepare(Native Method) at android.media.MediaPlayer.prepare(MediaPlayer.java:1274)
Pay attention to the status of mediaplayer. Add a reset sentence before prepare to reduce the number of error reports
1. Problem description
A piece of Python code runs normally on the local ide. After it is deployed to the server for operation, a modulenotfounderror: no module named ‘xxx’ error occurs.
2. Cause of problem
The package of other files (self written package, not installed by PIP) is introduced into the code. What’s the problem import that line.
The reason for the error is that the path on the server side is different from our local path.
3. Solution example
To solve this problem, you can add the following code at the top of your code:
import sys
import os
sys.path.append(os.path.dirname(sys.path[0]))perhaps
import sys
import os
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
sys.path.insert(0, BASE_DIR)4. The above codes of sys.Path.Append() and sys. Path.Insert() can ensure that you can switch to the directory where the currently executed script is located at any time, which can be adjusted according to the directory structure where your script is located.
Used in Python programs import xxx, the python parser will search XXX in the current directory, installed modules and third-party modules. If it fails to search, an error will be reported.
sys.path The module can dynamically modify the system path. The path imported by this method will become invalid after the python program exits.
sys.path It’s a list, so it’s easy to add a directory in it. After adding, the new directory will take effect immediately. In the future, every time import operation may check this directory.
1. sys.path.append()
In the sys.path temporary end of the list to add the search path, convenient and concise import other packages and modules. The path imported by this method will become invalid after the Python program exits.
Example:
import sys
sys.path.append('..') # Indicates to import the upper directory of the current file into the search path
sys.path.append('/home/model') # absolute path
from folderA.folderB.fileA import functionA
2. sys.path.insert()
You can define the search priority. The sequence number starts from 0, indicating the maximum priority, sys.Path.Insert() is also a temporary search path, which will become invalid after the program exits.
Example:
import sys sys.path.insert(1, "./model")
WeChat official account H5 page, creating the idea of two-dimensional code posters with parameters.
1. Generate QR code with parameters
use the plug-in phpqrcode, which has been recorded in previous articles. No more details.
2. Generate canvas canvas
draw the poster content through cavans first. Then convert the canvas picture to Base64 encoding using todataurl. Then, copy the base64 encoding to the picture and display it.
var canvas = document.getElementById("myCanvas");
var imgBase64=canvas.toDataURL("image/png");
var oimg = document.getElementById("img");
oimg.src=imgBase64;
3. The displayed pictures can be stored by long-pressing save
note: all elements in the canvas need to be loaded, otherwise an error will be reported in todataurl
therefore, crossorigin = “anonymous” should be added to the attributes of all pictures or documents
Building native extensions. This could take a while...
ERROR: Error installing cocoapods:
ERROR: Failed to build gem native extension.
current directory: /Library/Ruby/Gems/2.6.0/gems/ffi-1.15.4/ext/ffi_c
/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/bin/ruby -I /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0 -r ./siteconf20211117-13754-1pf53tk.rb extconf.rb
checking for ffi.h... *** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers. Check the mkmf.log file for more details. You may
need configuration options.
Provided configuration options:
--with-opt-dir
--without-opt-dir
--with-opt-include
--without-opt-include=${opt-dir}/include
--with-opt-lib
--without-opt-lib=${opt-dir}/lib
--with-make-prog
--without-make-prog
--srcdir=.
--curdir
--ruby=/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/bin/$(RUBY_BASE_NAME)
--with-ffi_c-dir
--without-ffi_c-dir
--with-ffi_c-include
--without-ffi_c-include=${ffi_c-dir}/include
--with-ffi_c-lib
--without-ffi_c-lib=${ffi_c-dir}/lib
--enable-system-libffi
--disable-system-libffi
--with-libffi-config
--without-libffi-config
--with-pkg-config
--without-pkg-config
/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:467:in `try_do': The compiler failed to generate an executable file. (RuntimeError)
You have to install development tools first.
from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:585:in `block in try_compile'
from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:534:in `with_werror'
from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:585:in `try_compile'
from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:1109:in `block in have_header'
from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:959:in `block in checking_for'
from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:361:in `block (2 levels) in postpone'
from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:331:in `open'
from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:361:in `block in postpone'
from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:331:in `open'
from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:357:in `postpone'
from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:958:in `checking_for'
from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:1108:in `have_header'
from extconf.rb:10:in `system_libffi_usable?'
from extconf.rb:42:in `<main>'
To see why this extension failed to compile, please check the mkmf.log which can be found here:
/Library/Ruby/Gems/2.6.0/extensions/universal-darwin-20/2.6.0/ffi-1.15.4/mkmf.log
extconf failed, exit code 1
Gem files will remain installed in /Library/Ruby/Gems/2.6.0/gems/ffi-1.15.4 for inspection.
Results logged to /Library/Ruby/Gems/2.6.0/extensions/universal-darwin-20/2.6.0/ffi-1.15.4/gem_make.outIn case of the above error, pay attention to the log file on the penultimate line and open it Mkmf.log file.
Found inside The path to the universal-darwin20 folder, yours may be universal-darwin21
Enter this folder and copy A copy of universal-darwin 20 is changed to Universal-darwin 19 will do.
1. Error reported: caused by: java.lang.noclassdeffounderror: org/springframework/JDBC/core/rowmapper
Problem reason: JDBC related dependencies are missing. Add the following dependencies:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
The detailed error reports are as follows:
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2021-11-17 09:54:25.841 ERROR 18008 --- [ main] o.s.boot.SpringApplication : Application run failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.security.oauth2.config.annotation.web.configuration.AuthorizationServerEndpointsConfiguration': Invocation of init method failed; nested exception is java.lang.IllegalStateException: Cannot configure enpdoints
at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:160) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:415) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1786) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:226) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:897) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:879) ~[spring-context-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:551) ~[spring-context-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143) ~[spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at oauth.QriverAuthServerApplication.main(QriverAuthServerApplication.java:14) [classes/:na]
Caused by: java.lang.IllegalStateException: Cannot configure enpdoints
at org.springframework.security.oauth2.config.annotation.web.configuration.AuthorizationServerEndpointsConfiguration.init(AuthorizationServerEndpointsConfiguration.java:81) ~[spring-security-oauth2-2.3.4.RELEASE.jar:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_281]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_281]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_281]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_281]
at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:389) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:333) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:157) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
... 19 common frames omitted
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'tokenServices' defined in class path resource [oauth/config/AuthorizationServerConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.security.oauth2.provider.token.AuthorizationServerTokenServices]: Factory method 'tokenServices' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jdbcClientDetailsService' defined in class path resource [oauth/config/AuthorizationServerConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.security.oauth2.provider.ClientDetailsService]: Factory method 'jdbcClientDetailsService' threw exception; nested exception is java.lang.NoClassDefFoundError: org/springframework/jdbc/core/RowMapper
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:655) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:483) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1336) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1176) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:556) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:226) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.resolveBeanReference(ConfigurationClassEnhancer.java:362) ~[spring-context-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:334) ~[spring-context-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at oauth.config.AuthorizationServerConfig$$EnhancerBySpringCGLIB$$a1ad4a51.tokenServices(<generated>) ~[classes/:na]
at oauth.config.AuthorizationServerConfig.configure(AuthorizationServerConfig.java:89) ~[classes/:na]
at org.springframework.security.oauth2.config.annotation.web.configuration.AuthorizationServerEndpointsConfiguration.init(AuthorizationServerEndpointsConfiguration.java:79) ~[spring-security-oauth2-2.3.4.RELEASE.jar:na]
... 26 common frames omitted
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.security.oauth2.provider.token.AuthorizationServerTokenServices]: Factory method 'tokenServices' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jdbcClientDetailsService' defined in class path resource [oauth/config/AuthorizationServerConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.security.oauth2.provider.ClientDetailsService]: Factory method 'jdbcClientDetailsService' threw exception; nested exception is java.lang.NoClassDefFoundError: org/springframework/jdbc/core/RowMapper
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:650) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
... 40 common frames omitted
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jdbcClientDetailsService' defined in class path resource [oauth/config/AuthorizationServerConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.security.oauth2.provider.ClientDetailsService]: Factory method 'jdbcClientDetailsService' threw exception; nested exception is java.lang.NoClassDefFoundError: org/springframework/jdbc/core/RowMapper
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:655) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:483) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1336) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1176) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:556) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:226) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.resolveBeanReference(ConfigurationClassEnhancer.java:362) ~[spring-context-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:334) ~[spring-context-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at oauth.config.AuthorizationServerConfig$$EnhancerBySpringCGLIB$$a1ad4a51.jdbcClientDetailsService(<generated>) ~[classes/:na]
at oauth.config.AuthorizationServerConfig.tokenServices(AuthorizationServerConfig.java:50) ~[classes/:na]
at oauth.config.AuthorizationServerConfig$$EnhancerBySpringCGLIB$$a1ad4a51.CGLIB$tokenServices$1(<generated>) ~[classes/:na]
at oauth.config.AuthorizationServerConfig$$EnhancerBySpringCGLIB$$a1ad4a51$$FastClassBySpringCGLIB$$991f75cc.invoke(<generated>) ~[classes/:na]
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244) ~[spring-core-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:331) ~[spring-context-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at oauth.config.AuthorizationServerConfig$$EnhancerBySpringCGLIB$$a1ad4a51.tokenServices(<generated>) ~[classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_281]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_281]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_281]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_281]
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
... 41 common frames omitted
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.security.oauth2.provider.ClientDetailsService]: Factory method 'jdbcClientDetailsService' threw exception; nested exception is java.lang.NoClassDefFoundError: org/springframework/jdbc/core/RowMapper
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:650) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
... 64 common frames omitted
Caused by: java.lang.NoClassDefFoundError: org/springframework/jdbc/core/RowMapper
at java.lang.ClassLoader.defineClass1(Native Method) ~[na:1.8.0_281]
at java.lang.ClassLoader.defineClass(ClassLoader.java:756) ~[na:1.8.0_281]
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) ~[na:1.8.0_281]
at java.net.URLClassLoader.defineClass(URLClassLoader.java:468) ~[na:1.8.0_281]
at java.net.URLClassLoader.access$100(URLClassLoader.java:74) ~[na:1.8.0_281]
at java.net.URLClassLoader$1.run(URLClassLoader.java:369) ~[na:1.8.0_281]
at java.net.URLClassLoader$1.run(URLClassLoader.java:363) ~[na:1.8.0_281]
at java.security.AccessController.doPrivileged(Native Method) ~[na:1.8.0_281]
at java.net.URLClassLoader.findClass(URLClassLoader.java:362) ~[na:1.8.0_281]
at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[na:1.8.0_281]
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355) ~[na:1.8.0_281]
at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[na:1.8.0_281]
at org.springframework.security.oauth2.provider.client.JdbcClientDetailsService.<init>(JdbcClientDetailsService.java:83) ~[spring-security-oauth2-2.3.4.RELEASE.jar:na]
at oauth.config.AuthorizationServerConfig.jdbcClientDetailsService(AuthorizationServerConfig.java:40) ~[classes/:na]
at oauth.config.AuthorizationServerConfig$$EnhancerBySpringCGLIB$$a1ad4a51.CGLIB$jdbcClientDetailsService$0(<generated>) ~[classes/:na]
at oauth.config.AuthorizationServerConfig$$EnhancerBySpringCGLIB$$a1ad4a51$$FastClassBySpringCGLIB$$991f75cc.invoke(<generated>) ~[classes/:na]
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244) ~[spring-core-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:331) ~[spring-context-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at oauth.config.AuthorizationServerConfig$$EnhancerBySpringCGLIB$$a1ad4a51.jdbcClientDetailsService(<generated>) ~[classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_281]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_281]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_281]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_281]
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
... 65 common frames omitted
Caused by: java.lang.ClassNotFoundException: org.springframework.jdbc.core.RowMapper
at java.net.URLClassLoader.findClass(URLClassLoader.java:382) ~[na:1.8.0_281]
at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[na:1.8.0_281]
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355) ~[na:1.8.0_281]
at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[na:1.8.0_281]
... 89 common frames omitted
1. Errors are reported as follows:
2. Solution:
jupyter notebook –generate-config
Reopen jupyter in CMD and run the code
Background error log
javax.xml.parsers.ParserConfigurationException: Feature 'http://apache.org/xml/features/xinclude' is not recognized.
at org.apache.xerces.jaxp.DocumentBuilderFactoryImpl.newDocumentBuilder(Unknown Source)
at org.apache.logging.log4j.core.config.xml.XmlConfiguration.newDocumentBuilder(XmlConfiguration.java:191)
at org.apache.logging.log4j.core.config.xml.XmlConfiguration.<init>(XmlConfiguration.java:89)
at org.apache.logging.log4j.core.config.xml.XmlConfigurationFactory.getConfiguration(XmlConfigurationFactory.java:46)
at org.apache.logging.log4j.core.config.ConfigurationFactory$Factory.getConfiguration(ConfigurationFactory.java:458)
at org.apache.logging.log4j.core.config.ConfigurationFactory$Factory.getConfiguration(ConfigurationFactory.java:385)
at org.apache.logging.log4j.core.config.ConfigurationFactory.getConfiguration(ConfigurationFactory.java:293)
at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:616)
at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:637)
at org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:231)
at org.apache.logging.log4j.core.async.AsyncLoggerContext.start(AsyncLoggerContext.java:76)
at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:153)
at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:45)
at org.apache.logging.log4j.LogManager.getContext(LogManager.java:307)
at org.apache.log4j.Logger$PrivateManager.getContext(Logger.java:59)
at org.apache.log4j.Logger.getLogger(Logger.java:41)
Solution:
Add startup parameters for JVM startup
-Djavax.xml.parsers.DocumentBuilderFactory=com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl
Question:
Start downloading
curl -L ” https://github.com/docker/compose/releases/download/1.25.0/docker-compose- $(uname -s)-$(uname -m)” -o /usr/local/bin/docker-compose
function
docker-compose –version
report errors
Cannot open self /usr/local/bin/docker-compose or archive /usr/local/bin/docker-compose.pkg
reason:
Find out that the downloaded files are missing due to the network
Solution:
Download the source file from GitHub on the local machine, and then upload it to the Linux server
Today, when deploying the continuous integration environment and testing the availability of nexus, the pipeline hangs seconds after Jenkins push code, and it always appears Not authorized error
I’ve been in trouble all day. I’ve been testing various configuration modifications. I’ve never reported any errors Not authorized
Finally, it was found that unauthorized access was not set
Finally in
Save save Straight to the record
Create two tables tbltesta and tbltesb, and delete tbltesta
create table dbo.TblTestA(
Id bigint primary key identity(1, 1),
name varchar(20) unique,
)
create table dbo.TblTestB(
Id bigint primary key identity(1, 1),
TestAId bigint not null foreign key references
Status varchar(1),
)Error reported: it is referenced by a foreign key constraint
Reason: other tables refer to the foreign key of this table
Solution:
1. Find the foreign key of this table referenced by other tables
exec sp_Helpconstraint ‘table name’;
2. Find the associated foreign key constraint table name
select name
from sys.foreign_key_columns f join sys.objects o on f.constraint_object_id=o.object_id
where f.parent_object_id=object_ID (‘foreign key association table name ‘)
3. Delete the foreign key constraint
Alter table foreign key constraint table, Drop constraint name (constraint name found above)
4. Delete table (events can be added)
BEGIN TRY
BEGIN TRANSACTION
ALTER TABLE TblTestB DROP CONSTRAINT FK__TblTestB__TestAI__635CD8E4
DROP TABLE dbo.TblTestA
COMMIT TRANSACTION
PRINT 'commit sucesss'
END TRY
BEGIN CATCH
ROLLBACK TRANSACTION
PRINT 'rollback sucesss'
END CATCH
About the error “version 1.8.0 301 of the JVM is not suitable for this product. Version: 11 or greater is required.”
1. Download Windows 64 bit (zip) under community from the official website of dbaver, and download and unzip it directly
2. After decompression, open the directory file, find dbeaver.exe and create a shortcut
3. Right click the shortcut and properties, add – VM D:/bigdata/software/JDK/bin/javaw.exe after the “target” path, and click apply and OK.
Generally, after performing the above operations, you can normally open the dbeaver shortcut. But some computers still can’t be turned on for some reasons. I checked many methods on the Internet. In the configuration file of dbaver, insert two lines above – vmargs:
-vm
D:/bigdata/software/jdk/bin/javaw.exe
However, the error version 1.8.0 is still reported when dbeaver is started on my computer_ 301 of the JVM is not suitable for this product. Version: 11 or greater is required.
I tried many methods on the Internet and still couldn’t solve it. Finally, I accidentally found that I put it in the dbeaver configuration file
-vm
D:/bigdata/software/jdk/bin/javaw.exe
Insert it into the next two lines of – vmargs. After saving, create a new shortcut and repeat step 3.
be careful!!! Be sure to add these two lines under – vmargs
Synchronous update: error from dbeaver startup ➕ Installation configuration – brief book (Jianshu. Com)
#Error message:
the reason for this error is the encryption rule MySQL in versions before MySQL 8_native_Password, and the encryption rule after MySQL 8 is caching_sha2_password. There are two ways to solve this problem. One is to update the Navicat driver to solve this problem, and the other is to modify the encryption rules of MySQL user login to MySQL_native_password. The second method is adopted here
# solution
log in to the database
set the password to never expire
alter user 'root'@'localhost' identified by 'root' password expire never;
Set the encryption rule to MySQL_native_password
alter user 'root'@'localhost' identified with mysql_native_password by 'root';
Access Navicat again and you will be prompted that the connection is successful
