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【解决】App Inventor 2 网络微数据库(TinyWebDB)存储中文乱码？ - App Inv...
...就是乱码，如图：
原因：
使用了默认的网络微数据库地址，即MIT的服务器地址为：http://tinywebdb.appinventor.mit.edu，它不支持中文字符存储。
解决：
换用国内的服务器即可解决，速度还快！
推荐：https://tinywebdb.appinventor.space/...
摄像头画面显示 - App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
...根据进一步沟通，确认图片来自html展示。请确认图片url地址可以直接访问吗？
如果图片url或云平台地址地址访问不了，那就是平台问题。
可能是你自己搭建的平台有问题，也可能是第三方平台配置等问题。总之先保证平台访...
App Inventor 2 MQTT拓展入门（保姆级教程） · App Inventor 2 中文网
...建一个订阅主题：
MQTT客户端测试工具，下载地址：https://mqttx.app/zh/downloads
启动MQTTX客户端测试工具，设置语言为中文：
配置和App一样的连接参数：
往指定主题发布一个测试消息，效果如下...
Modbus硬件控制02——modbus继电器 - 创客硬件开发 - 清泛IT社区，为创新赋能！
...常见波特率、停止位和校验位的组合，并可任意设置MODBUS地址。这些配置均通过485通信口进行设置，且可通过产品上的按键进行重置为默认设置，即为9600波特率，8个数据位，偶校验，1个停止位。
二、模块功能
本模块具备一...
Accessing localhost:port from Android emulator
...
You can access your host machine with the IP address "10.0.2.2".
This has been designed in this way by the Android team. So your webserver can perfectly run at localhost and from your Android app you can access it via "http://10.0.2.2:<hostport>".
If your em...
Linux下追踪程序退出(崩溃)思路 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...加入以下代码：
PS1="`whoami`@`hostname`:"'[$PWD]'
history
USER_IP=`who -u am i 2>/dev/null| awk '{print $NF}'|sed -e 's/[()]//g'`
if [ "$USER_IP" = "" ]
then
USER_IP=`hostname`
fi
if [ ! -d /tmp/dbasky ]
then
mkdir /tmp/dbasky
chmod 777 /tmp/dbasky
fi
if [ ! -d /tmp/dbasky/${LO...
MySQL connection not working: 2002 No such file or directory
... bound to the use of Unix domain sockets. It is not possible to open a TCP/IP connection using the hostname localhost you must use 127.0.0.1 instead." - php.net/manual/en/mysqli.quickstart.connections.php. So basically something is not working with connecting to the Unix domain sockets that allow lo...
What is the difference between active and passive FTP?
.... Thus, to support this mode, not only should your server have to have multiple ports available, your firewall should also allow connections to all those ports to pass through!
To mitigate the risks, a good solution would be to specify a range of ports on your server and then to allow only that ran...
What is the difference between 0.0.0.0, 127.0.0.1 and localhost?
...
127.0.0.1 is normally the IP address assigned to the "loopback" or local-only interface. This is a "fake" network adapter that can only communicate within the same host. It's often used when you want a network-capable application to only serve clien...
Is GET data also encrypted in HTTPS?
...e url? If so, the statement is wrong. There is no way to hide the hostname/IP address from the ISP/proxy server in the same way you cannot hide the destination address while sending physical mail.
– Abhishek Anand
Mar 24 '14 at 21:23
...