In uniapp, picker is used to render the object array, and the data is obtained from the background. The page code is as follows:
The data acquisition code is as follows:
Error report encountered:
The mistake here is that the property ProjectName is undefined, so you only need to add this property to the object array:
Previously:
Replace with:
If you use the hbuilder built-in browser, you may not see the error until you refresh it twice;
above;
In other words, the chip of ST company is detected and the connection fails, but it does burn the program for you (although it seems that you need to restart manually), so you can ignore this problem, but this error is a little annoying. Refer to the following steps to remove it.
environment
The model of single chip microcomputer is ch32f103c8t6 (not official)
ide: keil 5.35
Solution:
The installation path to the relevant pack, such as
E:\fold\arm pack\Keil\STM32F1xx_DFP\2.3.0
Open keil.stm32f1xx_Dfp.pdsc, open with Notepad, can be backed up first
Ctrl + F search not a genius
in the block block, add// comments before the two related sentences.
2. How to Solve
After investigation, it is because the postgres installation directory is under /home/, and the zabbix user monitoring causes insufficient permissions. Note: Do not try to modify the permissions with: chmod,chown, that is useless, I have tested it
3. solution:
Put the postgres installation directory in a directory other than /home, usually it can be put in the /usr/local directory, and then authorize the soft connection and it is OK, the data storage directory is not required. mv /home/postgres/postgres-13 /usr/local/ ln -s //usr/local/postgres-13/bin/psql /bin/psql The rest of the environment variables can be modified by yourself, so I won't explain them.
Cause: request class reference error
Solution:
change
use Illuminate\Support\Facades\Request;
to
use Illuminate\Http\Request;
Error Messages:
adb.exe' -P 5037 -s 29cc0bc8 shell settings delete global hidden_api_policy_pre_p_apps' exited with code 255'; Stderr: 'Exception occurred while executing 'delete': java.lang.SecurityException: Permission denial: writing to settings requires:android.permission.WRITE_SECURE_SETTI
Solution:
In Developer Options – Disable Permission Monitoring – Enabled
Reason for putting it first: [version incompatibility]
Exception:
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [redis.client.RedisClient]: Factory method ‘redisClient’ threw exception; nested exception is java.lang.IllegalArgumentException: port out of range:-1
Port out of range: – 1
Solution:
Find a private blog in the vast sea of articles, and modify the reisson version, Cao, under the tips of the boss’s post
Finally, reload pom.xml again
Redis based distributed lock implementation in springboot (via redisson)
The error information is as follows
Cause analysis
The main reason is that the hive configuration file is not configured in spark. Copy the hive-site.xml file of hive configuration to the spark directory
mv ../hive/conf/hive-site.xml ../spark/conf/hive-site.xml
explain:
If a JDBC error is reported, you also need to copy the MySQL jdbc driver under ../hive/lib to the ../spark/jars directory
The jar package MySQL connector is in hive’s lib directory, and the path where spark stores Jia package is in jars directory
result
When running the installation app in Android studio, if the installation fails, the following exception occurs:
installation did not succeed.
the application could not be installed: install_FAILED_DUPLICATE_PERMISSION
This indicates that the custom permission conflicts with the installed apps in the system, because two apps with different signatures are not allowed to define the same permission from Android 5.0
so the solution is to modify the permission definition, not the same as the existing app
The installed Anaconda startup error is as follows:
anaconda-navigator 2021-12-02 20:57:12,833 - WARNING linux_scaling.get_scaling_factor_using_dbus:31 An exception occurred during fetching list of system display settings. libGL error: MESA-LOADER: failed to open iris: /home/nication/anaconda3/lib/python3.9/site-packages/PyQt5/../../../libstdc++.so.6: version `GLIBCXX_3.4.29' not found (required by /usr/lib/dri/iris_dri.so) (search paths /usr/lib/dri, suffix _dri) libGL error: failed to load driver: iris libGL error: MESA-LOADER: failed to open iris: /home/nication/anaconda3/lib/python3.9/site-packages/PyQt5/../../../libstdc++.so.6: version `GLIBCXX_3.4.29' not found (required by /usr/lib/dri/iris_dri.so) (search paths /usr/lib/dri, suffix _dri) libGL error: failed to load driver: iris libGL error: MESA-LOADER: failed to open swrast: /home/nication/anaconda3/lib/python3.9/site-packages/PyQt5/../../../libstdc++.so.6: version `GLIBCXX_3.4.29' not found (required by /usr/lib/dri/swrast_dri.so) (search paths /usr/lib/dri, suffix _dri) libGL error: failed to load driver: swrast 2021-12-02 20:57:55,550 - ERROR download_api._download:228 HTTPSConnectionPool(host='optimise2.assets-servd.host', port=443): Read timed out. (read timeout=5) QXcbConnection: XCB error: 3 (BadWindow), sequence: 3225, resource id: 14878253, major code: 40 (TranslateCoords), minor code: 0
Later, it was found that the two versions of/usr/lib/libstdc + +. So.6.0.29 under the system and/lib/libstdc + +. So.6.0.28 under Anaconda were inconsistent. Let’s use the method of stealing heaven and earth.
mv ~/ anaconda3/lib/libstdc++.so.6.0.28 ~/ anaconda3/lib/libstdc++.so.6.0.28bake
cp / usr/lib/libstdc++.so.6.0.29 ~/ anaconda3/lib/libstdc++.so.6.0.28
There is no problem starting now:
anaconda-navigator 2021-12-02 21:34:56,159 - WARNING linux_scaling.get_scaling_factor_using_dbus:31 An exception occurred during fetching list of system display settings. 2021-12-02 21:35:31,590 - ERROR download_api._download:228 HTTPSConnectionPool(host='optimise2.assets-servd.host', port=443): Read timed out. (read timeout=5) 2021-12-02 21:35:31,921 - ERROR download_api._download:228 HTTPSConnectionPool(host='optimise2.assets-servd.host', port=443): Read timed out. (read timeout=5)
It’s almost normal
Error: Found item Attr/tabTextSize more than one time
Solution:
The solution is to extract and define the same attributes. As shown below, <attr name="tabTextSize" format="float"/> draw it and call it in each view