Problem: vs2015 compiles vtk8.2 with an error Error c2065 undeclared identifier error (__ func__）
Solution: (two)
(1) Change the header file sequence online (the first method is tested, but it doesn’t work. It’s here temporarily, and the second method is effective)
#include "StdAfx.h"Put it first
(2) Change,, name (test valid)
__func__ replace to __FUNCTION__Test valid
1. Problems
When using vuepress to build documents, the following problems occur:
2. Reasons
This is because the static files generated by vuepress build are rendered through the node server. Therefore, there is a problem when the API of the browser/DOM is not accessed in the beforemount or mounted hook in the component.
3. Solutions
For the components introduced in the markdown file (. MD), use the built-in < ClientOnly> component package
for example:
<ClientOnly>
<NonSSRFriendlyComponent/>
</ClientOnly>
However, the above method can not solve the problem of accessing the browser API by introducing a third-party component library into the component. You can use the on-demand loading function of import provided by ES6. Used in the mounted hook of the component.
<script>
export default {
mounted () {
// The introduced module will be loaded only when the component is mounted
import('./lib-that-access-window-on-import').then(module => {
// use code
})
}
}
</script>
Libmemcached encountered an error during compilation:
./config.h:632:15: error: two or more data types in declaration specifiers
#define off_t long int
^
./config.h:632:20: error: two or more data types in declaration specifiers
#define off_t long int
^
./config.h:658:17: error: two or more data types in declaration specifiers
#define ssize_t int
Since config. H is generated through the automake tool, I don’t know where to find the problem for a while
first write a try. C file:
#define off_t long int
#define ssize_it int
int main() {
return 1;
}
Can be compiled
multiple attempts have found that it is related to the order of #define. If #define off_ T long int in #define < stdxx.h> Before, an error will be reported, otherwise no error will be reported
via G + + - E - P try. C > XX , you can see:
#define long int __off_t
#define __off_t off_t
If#define off_t long intis ahead of stdxx.h,then use long int to replace off_t:
#define long int __off_t
#define __off_t long int
A loop occurs, so an error will be reported
and if #define off_ T long int after stdxx. H
because you already have #typedef__ off_ t off_ T without execution
In addition, it is found that #include “A.H” can also be used as #include & lt; a.h>， Previously, it was thought that local. H files could only be imported with “” instead of & lt& gt;， Now it is found that with GCC - I. , the directory with – I and include can be used with & lt& gt; Import local H files.
In addition, G + + can get preprocessed output in – E – P X.C, that is, a. CC file. The extern "C" {...} requires that the precompiled output must be compiled by G + +.
Today, I encountered a speechless mistake and tossed it for a long time… I mentioned the feature network with Bert, but it didn’t work… I checked the size and found that it wasn’t, and later found that it wasn’t on CUDA
Specific error reporting
RuntimeError: Caught RuntimeError in replica 0 on device 0.
RuntimeError: CUDA error: CUBLAS_ STATUS_ ALLOC_ FAILED when calling `cublasCreate(handle)
resolvent:
ext_hashCodes.unsqueeze(1).repeat(1, B, 1)
#change to
ext_hashCodes.unsqueeze(1).repeat(1, B, 1).cuda()
#It's OK
Article catalog
1. Preface 2. Bug 12.1 error reporting output 2.2 solutions 2.3 reference link
3. Bug 23.1 error output 3.2 solution
4. Bug 34.1 error reporting output 4.2 solution 4.3 reference link
1. Preface
When executing make Px4_ When sitl gazebo , an error is reported.
2. Bug 1
2.1 error output
CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
Please set them or make sure they are set and tested correctly in the CMake files:
GSTREAMER_LIBRARIES (ADVANCED)
linked by target "gazebo_uuv_plugin" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
linked by target "gazebo_user_camera_plugin" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
linked by target "gazebo_groundtruth_plugin" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
linked by target "gazebo_sonar_plugin" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
linked by target "gazebo_lidar_plugin" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
linked by target "gazebo_camera_manager_plugin" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
linked by target "gazebo_opticalflow_mockup_plugin" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
linked by target "mav_msgs" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
linked by target "nav_msgs" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
linked by target "std_msgs" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
linked by target "gazebo_opticalflow_plugin" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
linked by target "gazebo_airspeed_plugin" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
linked by target "gazebo_airship_dynamics_plugin" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
linked by target "gazebo_controller_interface" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
linked by target "sensor_msgs" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
linked by target "gazebo_vision_plugin" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
linked by target "gazebo_gimbal_controller_plugin" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
linked by target "gazebo_imu_plugin" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
linked by target "physics_msgs" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
linked by target "gazebo_wind_plugin" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
linked by target "gazebo_mavlink_interface" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
linked by target "gazebo_motor_model" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
linked by target "gazebo_catapult_plugin" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
linked by target "gazebo_multirotor_base_plugin" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
linked by target "gazebo_magnetometer_plugin" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
linked by target "gazebo_usv_dynamics_plugin" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
linked by target "gazebo_barometer_plugin" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
linked by target "gazebo_parachute_plugin" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
linked by target "gazebo_drop_plugin" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
linked by target "gazebo_gst_camera_plugin" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
linked by target "gazebo_irlock_plugin" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
linked by target "gazebo_gps_plugin" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
linked by target "gazebo_video_stream_widget" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
linked by target "LiftDragPlugin" in directory /home/zth/PX4-Autopilot/Tools/sitl_gazebo
-- Configuring incomplete, errors occurred!
See also "/home/zth/PX4-Autopilot/build/px4_sitl_default/build_gazebo/CMakeFiles/CMakeOutput.log".
See also "/home/zth/PX4-Autopilot/build/px4_sitl_default/build_gazebo/CMakeFiles/CMakeError.log".
[217/819] Linking CXX static library s...lib/mixer/SimpleMixer/libSimpleMixer.a
FAILED: external/Stamp/sitl_gazebo/sitl_gazebo-configure
cd /home/zth/PX4-Autopilot/build/px4_sitl_default/build_gazebo && /usr/bin/cmake -DCMAKE_INSTALL_PREFIX=/usr/local -DSEND_ODOMETRY_DATA=ON -DGENERATE_ROS_MODELS=ON -GNinja /home/zth/PX4-Autopilot/Tools/sitl_gazebo && /usr/bin/cmake -E touch /home/zth/PX4-Autopilot/build/px4_sitl_default/external/Stamp/sitl_gazebo/sitl_gazebo-configure
[227/819] Building CXX object src/lib/...MakeFiles/ecl_EKF.dir/EKFGSF_yaw.cpp.o
ninja: build stopped: subcommand failed.
Makefile:226: recipe for target 'px4_sitl' failed
make: *** [px4_sitl] Error 1
2.2 solutions
sudo apt install libgstreamer1.0-dev
sudo apt install gstreamer1.0-plugins-good
sudo apt install gstreamer1.0-plugins-bad
sudo apt install gstreamer1.0-plugins-ugly
2.3 reference links
[1] https://github.com/PX4/PX4-Autopilot/issues/13416
3. Bug 2
3.1 error output
VMware: vmw_ioctl_command error Invalid argument.
3.2 solutions
[1] Run gazebo under the virtual machine, about vmw_ ioctl_ Command error invalid argument error
4. Bug 3
4.1 error output
[Wrn] [Event.cc:61] Warning: Deleting a connection right after creation. Make sure to save the ConnectionPtr from a Connect call
[Err] [REST.cc:205] Error in REST request
libcurl: (51) SSL: no alternative certificate subject name matches target host name 'api.ignitionfuel.org'
4.2 Solution
Modify https://api.ignitionfuel.org in ~/.ignition/fuel/config.yaml to https://api.ignitionrobotics.org , it’s OK
Error content
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'getShiroFilterFactoryBean' defined in class path resource [com/gtlz/shiro/config/ShiroConfig.class]: Unsatisfied dependency expressed through method 'getShiroFilterFactoryBean' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'securityManager' defined in class path resource [com/gtlz/shiro/config/ShiroConfig.class]: Unsatisfied dependency expressed through method 'getDefaultWebSecurityManager' parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userRealm': Unsatisfied dependency expressed through field 'mapper'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.gtlz.shiro.mapper.UserMapper' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:800) ~[spring-beans-5.3.9.jar:5.3.9]
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:541) ~[spring-beans-5.3.9.jar:5.3.9]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1334) ~[spring-beans-5.3.9.jar:5.3.9]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1177) ~[spring-beans-5.3.9.jar:5.3.9]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:564) ~[spring-beans-5.3.9.jar:5.3.9]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524) ~[spring-beans-5.3.9.jar:5.3.9]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.9.jar:5.3.9]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.9.jar:5.3.9]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.9.jar:5.3.9]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:213) ~[spring-beans-5.3.9.jar:5.3.9]
at org.springframework.context.support.PostProcessorRegistrationDelegate.registerBeanPostProcessors(PostProcessorRegistrationDelegate.java:270) ~[spring-context-5.3.9.jar:5.3.9]
at org.springframework.context.support.AbstractApplicationContext.registerBeanPostProcessors(AbstractApplicationContext.java:762) ~[spring-context-5.3.9.jar:5.3.9]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:567) ~[spring-context-5.3.9.jar:5.3.9]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145) ~[spring-boot-2.5.4.jar:2.5.4]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:754) [spring-boot-2.5.4.jar:2.5.4]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:434) [spring-boot-2.5.4.jar:2.5.4]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:338) [spring-boot-2.5.4.jar:2.5.4]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1343) [spring-boot-2.5.4.jar:2.5.4]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1332) [spring-boot-2.5.4.jar:2.5.4]
at com.gtlz.shiro.ShiroApplication.main(ShiroApplication.java:12) [classes/:na]
The reason for my error is that the mapper package is not scanned by the startup class
Original code
@MapperScan(basePackages = { "com.gtlz.shiro.*.mapper" })After modification
@MapperScan(basePackages = { "com.gtlz.shiro.mapper" })The reason should be that there are no other packages outside my mapper package, so the scan failed. Please pay attention next time
After learning the fourth lesson of Mr. Gu Yue’s ROS, I started the keyboard control of the robot and reported this error in the launch file. The following is the error content:
process[mbot_teleop-1]: started with pid [4942]
File "/home/zxf/catkin_ws/src/mbot_teleop/scripts/mbot_teleop.py", line 78
print msg
^
SyntaxError: Missing parentheses in call to 'print'. Did you mean print(msg)?
[mbot_teleop-1] process has died [pid 4942, exit code 1, cmd /home/zxf/catkin_ws/src/mbot_teleop/scripts/mbot_teleop.py __name:=mbot_teleop __log:=/home/zxf/.ros/log/4e9341ca-0155-11ec-8ec5-cf95496c0738/mbot_teleop-1.log].
log file: /home/zxf/.ros/log/4e9341ca-0155-11ec-8ec5-cf95496c0738/mbot_teleop-1*.log
I searched the Internet and found that it was because of the version of python2. X was incompatible with the version of python3. X. The reason for the error lies in the print output syntax. A simple example is hello ROS
python2.x
print "hello ROS"
Output: hello ROS
print 'hello ROS'
Output: hello ROS
print ('hello ROS')
Output: hello ROS
print ("hello ROS")
Output: hello ROSThe above four methods can be applied in Python 2. X, but not necessarily in Python 3. X
python3.x
print("hello ROS")
Output: hello ROS
print(hello ROS)
Output: hello ROSI use Ubuntu 20.04, so it is the Python 3 version, which is different from that used by Gu Yue, so I need to modify ~/catkin_ws/src/mbot_teleop/scripts/mbot_ Teleop.py file
#!/usr/bin/env python
# -*- coding: utf-8 -*-
import rospy
from geometry_msgs.msg import Twist
import sys, select, termios, tty
msg = """
Control mbot!
---------------------------
Moving around:
u i o
j k l
m , .
q/z : increase/decrease max speeds by 10%
w/x : increase/decrease only linear speed by 10%
e/c : increase/decrease only angular speed by 10%
space key, k : force stop
anything else : stop smoothly
CTRL-C to quit
"""
moveBindings = {
'i':(1,0),
'o':(1,-1),
'j':(0,1),
'l':(0,-1),
'u':(1,1),
',':(-1,0),
'.':(-1,1),
'm':(-1,-1),
}
speedBindings={
'q':(1.1,1.1),
'z':(.9,.9),
'w':(1.1,1),
'x':(.9,1),
'e':(1,1.1),
'c':(1,.9),
}
def getKey():
tty.setraw(sys.stdin.fileno())
rlist, _, _ = select.select([sys.stdin], [], [], 0.1)
if rlist:
key = sys.stdin.read(1)
else:
key = ''
termios.tcsetattr(sys.stdin, termios.TCSADRAIN, settings)
return key
speed = .2
turn = 1
def vels(speed,turn):
return "currently:\tspeed %s\tturn %s " % (speed,turn)
if __name__=="__main__":
settings = termios.tcgetattr(sys.stdin)
rospy.init_node('mbot_teleop')
pub = rospy.Publisher('/cmd_vel', Twist, queue_size=5)
x = 0
th = 0
status = 0
count = 0
acc = 0.1
target_speed = 0
target_turn = 0
control_speed = 0
control_turn = 0
try:
print(msg)
print(vels(speed,turn))
while(1):
key = getKey()
if key in moveBindings.keys():
x = moveBindings[key][0]
th = moveBindings[key][1]
count = 0
elif key in speedBindings.keys():
speed = speed * speedBindings[key][0]
turn = turn * speedBindings[key][1]
count = 0
print(vels(speed,turn))
if (status == 14):
print(msg)
status = (status + 1) % 15
elif key == ' ' or key == 'k' :
x = 0
th = 0
control_speed = 0
control_turn = 0
else:
count = count + 1
if count > 4:
x = 0
th = 0
if (key == '\x03'):
break
target_speed = speed * x
target_turn = turn * th
if target_speed > control_speed:
control_speed = min( target_speed, control_speed + 0.02 )
elif target_speed < control_speed:
control_speed = max( target_speed, control_speed - 0.02 )
else:
control_speed = target_speed
if target_turn > control_turn:
control_turn = min( target_turn, control_turn + 0.1 )
elif target_turn < control_turn:
control_turn = max( target_turn, control_turn - 0.1 )
else:
control_turn = target_turn
twist = Twist()
twist.linear.x = control_speed;
twist.linear.y = 0;
twist.linear.z = 0
twist.angular.x = 0;
twist.angular.y = 0;
twist.angular.z = control_turn
pub.publish(twist)
except:
print(e)
finally:
twist = Twist()
twist.linear.x = 0; twist.linear.y = 0; twist.linear.z = 0
twist.angular.x = 0; twist.angular.y = 0; twist.angular.z = 0
pub.publish(twist)
termios.tcsetattr(sys.stdin, termios.TCSADRAIN, settings)It is probably to add () to the print output statement on lines 78, 79, 93, 95 and 141.
MySQL reports an error: errorcode 1130, state HY000
Scenario: the following error is reported during springboot startup:
The XML configuration is as follows:
It can be started normally when writing 127.0.0.1 or localhost. After rewriting 192.168. X.x, an Error 1130 is reported.
Reason: MySQL does not have this permission
Solution:
Error Message:
ERROR_POLICY: attempt to perform an operation not allowed by the security policy 'PDF' @ error/constitute.c/IsCoderAuthorized/421
Solution:
Modifysudo nano /etc/ImageMagick-6/policy.xml
.....
<!-- not needed due to the need to use explicitly by mvg: -->
<!-- <policy domain="delegate" rights="none" pattern="MVG" /> -->
<!-- use curl -->
<policy domain="delegate" rights="none" pattern="URL" />
<policy domain="delegate" rights="none" pattern="HTTPS" />
<policy domain="delegate" rights="none" pattern="HTTP" />
<!-- in order to avoid to get image with password text -->
<policy domain="path" rights="none" pattern="@*"/>
<!-- disable ghostscript format types -->
<!--<policy domain="coder" rights="none" pattern="PS" />
<policy domain="coder" rights="none" pattern="PS2" />
<policy domain="coder" rights="none" pattern="PS3" />
<policy domain="coder" rights="none" pattern="EPS" />
<policy domain="coder" rights="none" pattern="PDF" />
<policy domain="coder" rights="none" pattern="XPS" />-->
<policy domain="coder" rights="read|write" pattern="PDF" />
</policymap>
Comment coder, add the last line
Problem description
Using pyinstaller to package the project into an executable file, we encountered the above problems after solving various problems. The project we wrote needs to use multiple processes, but this problem will occur if the process is not successfully created.
Solution 1
I think others’ solutions are as follows:
if __name__ == '__main__':
# The following sentence must be added below the if
multiprocessing.freeze_support()
Solution 2
The general search answer is scheme 1, but this does not apply to me. As a result, the problem bothered me for two days. Just realized that if you use argparse in your code, package it into an executable file, and use multiple processes, you are likely to report this error. After I modified argparse and packaged it into an executable file, multiple processes can be started normally.
1. Baidu general reference: authentication mechanism
https://ai.baidu.com/ai-doc/REFERENCE/Ck3dwjhhu
Introduction
this document is mainly for HTTP API callers. Baidu AIP open platform uses oauth2.0 authorization to call the open API. When calling the API, you must bring access in the URL_ Token parameter. The process of obtaining access token is as follows:
Get access token
request URL data format
To the authorized service address https://aip.baidubce.com/oauth/2.0/token Send the request (post is recommended), and take the following parameters in the URL:
grant_ Type: required parameter, fixed to client_ credentials；
client_ ID: required parameter, API key applied
client_ Secret: required parameter, the applied secret key;
https://aip.baidubce.com/oauth/2.0/token?grant_type=client_credentials&client_id=Va5yQRHlA4Fq5eR3LT0vuXV4&c2. However, the result of my test is:
https://aip.baidubce.com/oauth/2.0/token
Postman test
{
" grant_type": "client_credentials",
"client_id": "pGB2vIVTXn9ATexEsqMIDYO",
"client_secret": "5yNZqWSIuj4PVRGdavjw1e5U3z9K6Kb"
}Get the token value and display the following results
{
"error": "unsupported_grant_type",
"error_description": "The authorization grant type is not supported"
}The tried methods all prompt similar errors
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that
corresponds to your MySQL server version for the right syntax to use near '("123456") where user="root"' at line 1
Update user statement
UPDATE user SET password=PASSWORD('123456') WHERE user='root';
FLUSH PRIVILEGES;
Set password statement
SET PASSWORD FOR root=PASSWORD('123456');
authentication_string change
update mysql.user set authentication_string=password('123456') where user='root' ;
Final solution
mysql> SET PASSWORD = '123456';