Use Apache Groovy for script programming and automation

Use Apache Groovy for script programming and automation Apache Groovy is a flexible and powerful dynamic language. It is completely compatible with Java and can interact seamlessly with Java code.Groovy provides many simplified characteristics and syntax of Java development, making it easier to write scripts and automated tasks. 1. The installation and configuration of Apache Groovy To start using Apache Groovy, you need to download and install Groovy SDK first.Download the page on the official website https://groovy.apache.org/, you can find the installation program suitable for your operating system.After the installation is completed, you need to add the Groovy's Bin directory to the environment variables of the system so that the Groovy script can be run directly in the command line terminal. Second, the basic grammar of the Groovy script The extension of the Groovy script file is usually .Groovy, which can be written in any text editor.Here are examples of basic grammar of some Groovy scripts: 1. Hello World Example groovy println "Hello, World!" 2. Variables and data types groovy defly message = "Hello, Groovy!" // Define a variable and assign a value println message defnumber = 42 // Define an integer variable println number DEF PI = 3.14 // Define a floating -point number variable println pi 3. Control streaming sentence groovy def number = 42 if (number > 0) { println "Number is positive." } else if (number < 0) { println "Number is negative." } else { println "Number is zero." } 4. Circular statement groovy def numbers = [1, 2, 3, 4, 5] for (num in numbers) { println num } def i = 0 while (i < 5) { println i i++ } 5. Method definition and call groovy def sayHello() { println "Hello, Groovy!" } sayHello() def addNumbers(int a, int b) { return a + b } def result = addNumbers(2, 3) println result Third, automated application of Groovy script Groovy script can not only be used for simple printing information and mathematical computing scenarios, but also for the writing of automation tasks.The following is an example of performing file operation using the Groovy script: groovy def file = new File("path/to/file.txt") if (file.exists()) { def content = file.text println "File content: $content" } else { println "File not found." } The above example code opens a file and read its content. If the file exists, print the content, otherwise print the prompt information. Through the rich API provided by Groovy, similar automation tasks can be achieved, such as reading and modifying configuration files, executing system commands, accessing databases, etc.Groovy can also easily use the Java library and framework, such as Apache HTTPClient for network requests, or Selenium for web automation testing. Summarize Apache Groovy is a powerful dynamic language that can easily write scripts and automation tasks.Through the simple grammar and powerful API provided by Groovy, highly efficient and readable scripts can be written.The seamless integration with Java has made Groovy a powerful tool for Java developers, and has extensive application value in various scenarios.