The best practice of improving the quality of code and maintainability of the Delta Core framework
Improve code quality and maintainability is the goal of always pursuing software development.The Delta Core framework is an open source Java framework that aims to help developers improve code quality and maintenance.This article will introduce the best practice of some Delta Core frameworks, and how to apply these practices in the project to generate high -quality code.
1. Clear code structure
A clear code structure is the basis for improving code maintenance.When using the Delta Core framework, we should follow some best practices to organize code:
1. Use the packet to group related classes and interfaces, follow the principle of single responsibility to ensure that each bag has clear responsibilities.
package com.example.service;
2. Use modular thinking to split projects and place functional classes in the same module to facilitate code maintenance and reuse.
├── core-module
├── database-module
└── web-module
3. Use standard naming specifications, such as using the hump naming method, which gives a meaningful name, method, and variables to enhance the readability of the code.
public class UserService {
public void getUserById(int userId) {
// ...
}
}
2. Use design mode
The design model is some code organization methods that are widely used to solve specific problems.When using the Delta Core framework, we can use some commonly used design modes to improve the quality and maintenance of code:
1. Single mode: Use a single mode to limit the instance of the class to one object to ensure the uniqueness of the global.This can be used to manage resources or provide global access points.
public class DatabaseConnection {
private static DatabaseConnection instance;
private DatabaseConnection() {}
public static DatabaseConnection getInstance() {
if (instance == null) {
instance = new DatabaseConnection();
}
return instance;
}
}
2. Factory mode: Use the factory mode to create objects, the creation logic of the packaging object, which is convenient for code maintenance and coupling.
public interface Logger {
void log(String message);
}
public class FileLogger implements Logger {
public void log(String message) {
// Write the log into the file
}
}
public class DatabaseLogger implements Logger {
public void log(String message) {
// Write the log into the database
}
}
public class LoggerFactory {
public Logger getLogger(String type) {
if ("file".equals(type)) {
return new FileLogger();
} else if ("database".equals(type)) {
return new DatabaseLogger();
}
return null;
}
}
3. Use annotations and AOP
The Delta Core framework provides comments and AOP (facing cut -out programming) support, which can enhance the readability and maintenance of the code.
1. Use important information in the annotation mark code, such as the purpose of the method, the meaning of the parameters, etc.This can provide richer documents and code prompts.
@Documented
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface Log {
String value() default "";
}
public class UserService {
@Log ("Get user information")
public User getUserById(int userId) {
// ...
}
}
2. Use AOP to achieve some reuse of horizontal sectaries, such as log records, permissions control, etc.This can reduce the writing of duplicate code and improve the maintenance of code.
@Aspect
public class LoggingAspect {
@Before("@annotation(Log)")
public void logMethod(JoinPoint joinPoint) {
String methodName = joinPoint.getSignature().getName();
System.out.println ("call method:" + MethodName);
}
}
@Configuration
@EnableAspectJAutoProxy
public class AppConfig {
@Bean
public LoggingAspect loggingAspect() {
return new LoggingAspect();
}
}
The above is the best practice of some Delta Core frameworks. By using clear code structure, commonly used design patterns and annotations+AOP technical means, we can effectively improve the quality and maintenance of code.Applying these practices in the project, developers can more easily write, test and maintain high -quality code.
