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Today, I want to use itext's jar package. I went to the official website and found that I can only download it with maven, but I changed my phone number before. I can't help it. Please try to set up Maven again. Record here and share it or find it in the future The first choice is to make sure that the jdk is installed on your environment. If n ...

Using java to call python's crawler is a very interesting thing, but most of the solutions are not reliable. The author spent two days, hands-on practice, and finally completely solved the problem java-python Problems to be solved when Java calls Python crawler: Parameter passing problem Through python script, sys.argv[1] ...

1. Install Xcode command line tools xcode-select --install 2. Install Homebrew Xcode Command Line Tools must be installed before installing Homebrew. Run the following command in terminal to install homebrew: ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" Next, we need to do one thing so that the sta ...

I need a way to tell the shell which mode it is in from the shell. I try to see platform Module, but it only seems to tell you the information about "bit architecture and link format used by executable program": Although binary file is compiled to 64 bit (I run on OS X 10.6), so even if ...

Video player based on FFmpeg and SDL (3) - SDL video display SDL introduction SDL (Simple DirectMedia Layer) is a set of open source cross platform multimedia development library written in C language. SDL provides several functions to control image, sound, output and input, so that developers can ...

Timing and Mail At this stage, we hope to add two more practical functions to the general crawler program: The first is the timing function, that is, the program can automatically crawl data according to the time we set; the second is the notificatio ...

Preface Recently, we have studied the close real-time communication between iOS devices, and have understood its solution. The following is arranged: AirDrop is often used to share pictures and videos between iOS/OS X systems, but its real-time performance is poor.CoreBluetooth has a smaller bandwidth.GameKit has been disca ...