Application cases of code generator core framework in the Java library

Application cases of code generator core framework in the Java library 1. Case introduction Code generator is a tool that can automatically generate code according to specific rules and configuration files.Through code generator, developers can quickly generate code with high repetitive and fixed models to improve development efficiency and code quality.This article will introduce the application case of the core framework of the code generator in the Java library. 2. Case examples Take a simple Java Web project as an example to introduce the application of the core framework of the code generator in the Java library. 1. Configuration file preparation First of all, you need to prepare a configuration file to define the rules and templates of the code generator.The configuration file usually includes the following content: -Database connection information: including database drives, URLs, user names, passwords, etc. -Code generation rules: including data table names, generating code paths, generated package names, generated category names, etc. -Code template: including templates of Java class, templates of methods, templates for member variables, etc. 2. Code generator core framework integration In the Java class library, the core framework of integrated code generator needs to be integrated.You can introduce the core framework of the code generator into the project through Maven management dependencies. 3. Templates that are written to generate code According to the rules in the configuration file, the template for generating code is written.The core framework of the code generator usually uses a template engine to automatically generate the code.You can use template engines such as FreeMarker, Velocity, Thymeleaf. 4. Writing the logic of generating code In the Java library, the logic of generating code is drawn.According to the rules and templates in the configuration file, the API provided by the core framework of the code generator to render the template to the final code file. 5. Execute code generation Perform code generation by calling the core framework of the code generator.According to the rules in the configuration file, the template is rendered as a code file and saved to the specified path. Third, code description Below is a simplified sample code, which shows the application of the core framework of the code generator in the Java class library: import com.example.generator.CodeGenerator; public class Main { public static void main(String[] args) { // Configure file path String configFilePath = "config.properties"; // Create code generator instance CodeGenerator codeGenerator = new CodeGenerator(); // Load the configuration file codeGenerator.loadConfig(configFilePath); // Execute code generation codeGenerator.generate(); } } In the above code, you first need to specify the path of the configuration file, and then create a CodeGenerator instance provided by the core framework of the code generator.Next, load the configuration file by calling the LoadConfig method, and then call the generate method to execute the code generation. Fourth, summary The application of code generator core framework in the Java library can greatly improve development efficiency and code quality.By configured files and templates, developers can quickly generate code with high repetitive and fixed patterns.This article demonstrates the application process of the code generator through a simple case and provides an example code.