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1. Problem description 2. Problem solving
1. Problem description
After matlab 2018a is successfully installed, a licensing error appears when it is opened: – 8523:
2. Problem solving
Delete the shortcut of MATLAB automatically created on the desktop, find .../bin/win64/matlab.exe , and then right-click 'to run' as an administrator, otherwise an error will be reported. Right click this file and send the shortcut to the desktop, so that the desktop can open MATLAB.
Today, when accessing an Android SDK, I reported a problem of manifest merge failed with multiple errors, see logs. Google said that this problem often occurs when introducing a third-party SDK. In fact, it is a dependency conflict
you can see the specific error information above the error, as shown below
it indicates that there is a com.tencent.mid conflict. Just exclude
After going out for a while, QT couldn’t open the project when he came back, so Baidu took it
it turns out that the plug-in is not enabled, so just check it
the top menu bar – help – about plug-ins
check QBs, qmake and support for project construction
Restart QT creator and try to build again. It is successful.
Recently, I used nltk as a downloader in my homework related to automatic Q & A. I used another computer to solve the problem, but I didn’t record the solution. I immediately forgot and spent about 2 hours looking for a solution. Therefore, I want to record the solution now.
import nltk
nltk.download('stopwords')
nltk.download('reuters')
nltk.download('punkt')
When executing the above code, an error is found error loading stopwords: & lt; Urlopen error [errno 11004] getaddrinfo failed , the following methods are available through practical operation.
Find the hosts file under C: \ windows \ system32 \ drivers \ etc , open it as an administrator, and add the following line of IP address to the end of hosts.
185.199.108.133 raw.githubusercontent.com
As shown in the figure below,
after adding and running again, you will find that the download is successful
The address of raw.github is changed frequently, resulting in unsuccessful download
It is possible that the address may be changed frequently, resulting in unsuccessful downloading. We can open the website for querying the IP address: https://www.ipaddress.com/ Enter raw. Githubusercontent. Com to find the corresponding new IP address.
give an example
We have added the IP address to the hosts and found that it was still unsuccessful. Therefore, let’s see if the download failed due to the change of the IP address of raw.github. We open https://websites.ipaddress.com/ website, enter raw.githubusercontent.com , and click look up
. It is found that four IPS have been found. We replace the content in hosts with
185.199.109.133 raw.githubusercontent.com
Then we re execute and find success.
If the above solutions are not solved, you can leave a message and we can communicate together~
The above solutions are from the solution reference link. Thank you very much!!
1. Error log
org.springframework.web.multipart.MultipartException: Failed to parse multipart servlet request; nested exception is java.lang.RuntimeException: java.nio.file.NoSuchFileException: /tmp/undertow.8081.6091954911906268442/undertow2435234810596519507upload
at org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.handleParseFailure(StandardMultipartHttpServletRequest.java:124)
at org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.parseRequest(StandardMultipartHttpServletRequest.java:115)
at org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.<init>(StandardMultipartHttpServletRequest.java:88)
at org.springframework.web.multipart.support.StandardServletMultipartResolver.resolveMultipart(StandardServletMultipartResolver.java:87)
at org.springframework.web.servlet.DispatcherServlet.checkMultipart(DispatcherServlet.java:1178)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1012)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909)
2. Cause of problem
After consulting the blog, I know the cause of the problem:
in Linux system, when the spring boot application is started with Java jar command, a Tomcat (or undertow) temporary directory will be generated in the/tmp directory of the operating system. The uploaded files must be converted into temporary files and saved under this folder. Because the files in the temporary/tmp directory are not used for a long time (10 days), the system executes the TMP directory cleaning service (systemd-tmpfiles-clean. Service), resulting in the cleaning of/TMP/undertow… 8090 files. However, when uploading, the undertow server needs to create/TMP/undertow… 8090/undertow… Upload temporary files, However, when calling files. CreateFile (…), you will find that the parent directory cannot be found, which leads to the above error.
3. Solution
1) Restart
cannot be done once and for all
2) the directory specified by the configuration file
needs to be manually created on the server
MKDIR – P/data/tmp
spring:
servlet:
multipart:
location: /data/tmp
3) Add startup parameter – Java.TMP.Dir =/path/to/application/temp/
JD-GUI
Check ide of jar
URL
http://java-decompiler.github.io/
Found JD-GUI error after upgrading Big Sur
ERROR launching ‘JD-GUI’
No suitable Java version found on your system!
This program requires Java 1.8+
Make sure you install the required Java version.
Need to replace files
[The source site may have anti-theft chain mechanism, we suggest to save the image and upload it directly (img-tyA4R80g-1635526847601)(evernotecid://4E256570-D902-4601-B913-1C7B0CBD5BA0/appyinxiangcom/ 23501392/ENResource/p275)]
Content
Replace the content
Solution: Change “_” to “-” or other
Note that the profile service name should be changed as well
at org.springframework.util.Assert.state(Assert.java:73) ~[spring-core-5.2.1.RELEASE.jar:5.2.1.RELEASE] at org.springframework.cloud.openfeign.FeignClientsRegistrar.getName(FeignClientsRegistrar.java:103) ~[spring-cloud-openfeign-core-2.2.0.RELEASE.jar:2.2.0.RELEASE] at org.springframework.cloud.openfeign.FeignClientsRegistrar.getName(FeignClientsRegistrar.java:278) ~[spring-cloud-openfeign-core-2.2.0.RELEASE.jar:2.2.0.RELEASE] at org.springframework.cloud.openfeign.FeignClientsRegistrar.registerFeignClient(FeignClientsRegistrar.java:233) ~[spring-cloud-openfeign-core-2.2.0.RELEASE.jar:2.2.0.RELEASE] at org.springframework.cloud.openfeign.FeignClientsRegistrar.registerFeignClients(FeignClientsRegistrar.java:219) ~[spring-cloud-openfeign-core-2.2.0.RELEASE.jar:2.2.0.RELEASE] at org.springframework.cloud.openfeign.FeignClientsRegistrar.registerBeanDefinitions(FeignClientsRegistrar.java:144) ~[spring-cloud-openfeign-core-2.2.0.RELEASE.jar:2.2.0.RELEASE] at org.springframework.context.annotation.ImportBeanDefinitionRegistrar.registerBeanDefinitions(ImportBeanDefinitionRegistrar.java:86) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE] at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.lambda$loadBeanDefinitionsFromRegistrars$1(ConfigurationClassBeanDefinitionReader.java:385) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE] at java.util.LinkedHashMap.forEach(LinkedHashMap.java:684) ~[na:1.8.0_131] at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsFromRegistrars(ConfigurationClassBeanDefinitionReader.java:384) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE] at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForConfigurationClass(ConfigurationClassBeanDefinitionReader.java:148) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE] at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitions(ConfigurationClassBeanDefinitionReader.java:120) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE] at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:337) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE] at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:242) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE] at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:275) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE] at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:95) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE] at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:706) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:532) ~[spring-context-5.2.1.RELEASE.jar:5.2.1.RELEASE] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) ~[spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) [spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) [spring-boot-2.2.1.RELEASE.jar:2.2.1.RELEASE] at com.yelin.ServiceHrUserApplication.main(ServiceHrUserApplication.java:16) [classes/:na] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_131] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_131] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_131] at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_131] at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.2.1.RELEASE.jar:2.2.1.RELEASE]
Usually the red report after import is because there is no module, use pip install cv2 to download the module, it will appear:
Could not find a version that satisfies the requirement cv2 (from versions: )
No matching distribution found for cv2
You are using pip version 18.1, however version 19.0.2 is available.
You should consider upgrading via the ‘python -m pip install –upgrade pip’ command.
At this point you need to type python -m pip install –upgrade pip
When the installation is complete, run this line “pip install opencv-python”, this line is to install the cv2 module, wait until the download is complete
To install the numpy module, you only need to pip install numpy
The summary is as follows:
python -m pip install --upgrade pip
pip install opencv-python
pip install numpypip3 install –upgrade pip3 execution error after pip upgrade
Description
Traceback (most recent call last):
File “/home/brian/.local/bin/pip3”, line 7, in
from pip._internal.cli.main import main
File “/home/brian/.local/lib/python3.5/site-packages/pip/_internal/cli/main.py”, line 60
sys.stderr.write(f”ERROR: {exc}”)
^
SyntaxError: invalid syntax
Solution
Execute python3 –version to determine the python3 version visit https://bootstrap.pypa.io/pip/ Find the get-pip.py file for the corresponding python version at this URL and execute wget in the terminal https://bootstrap.pypa.io/pip/3.8/get-pip.pypython3 get-pip.py
2021-11-02 15:56:03 [twisted] CRITICAL:
Traceback (most recent call last):
File "/Users/tanya/Library/Python/2.7/lib/python/site-packages/twisted/internet/defer.py", line 1418, in _inlineCallbacks
result = g.send(result)
File "/Users/tanya/Library/Python/2.7/lib/python/site-packages/scrapy/crawler.py", line 104, in crawl
six.reraise(*exc_info)
File "/Users/tanya/Library/Python/2.7/lib/python/site-packages/scrapy/crawler.py", line 86, in crawl
self.engine = self._create_engine()
File "/Users/tanya/Library/Python/2.7/lib/python/site-packages/scrapy/crawler.py", line 111, in _create_engine
return ExecutionEngine(self, lambda _: self.stop())
File "/Users/tanya/Library/Python/2.7/lib/python/site-packages/scrapy/core/engine.py", line 67, in __init__
self.scheduler_cls = load_object(self.settings['SCHEDULER'])
File "/Users/tanya/Library/Python/2.7/lib/python/site-packages/scrapy/utils/misc.py", line 46, in load_object
mod = import_module(module)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/importlib/__init__.py", line 37, in import_module
__import__(name)
File "/Users/tanya/Library/Python/2.7/lib/python/site-packages/scrapy/core/scheduler.py", line 7, in <module>
from queuelib import PriorityQueue
File "/Users/tanya/Library/Python/2.7/lib/python/site-packages/queuelib/__init__.py", line 1, in <module>
from queuelib.queue import FifoDiskQueue, LifoDiskQueue
File "/Users/tanya/Library/Python/2.7/lib/python/site-packages/queuelib/queue.py", line 7, in <module>
from contextlib import suppress
ImportError: cannot import name suppress
resolvent:
pip uninstall attrs
pip uninstall queuelib
pip install queuelib==1.5.0
pip install attrsProblem 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:
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!!!!