The technical principles of the Scannit framework in the Java library
The technical principles of the Scannit framework in the Java library
Introduction:
Scannit is a Java -based open source framework for scanning and analysis in the Java class library.It provides a simple and powerful method to handle category and resource files in order to be able to dynamically processes at runtime.This article will analyze the technical principles of the Scannit framework in the Java library and provide the corresponding Java code example.
1. Learn the scannit framework
The Scannit framework allows developers to obtain detailed information from relevant categories through the specified package name or class name.It uses the Java Reflection API to handle the scanning and parsing tasks of the class, and provides some simplified methods to quickly obtain the required classes.
2. Class scanning
Scannit provides a classSCanner to obtain relevant class information by specifying the package name or class name.The following is a simple example that shows how to use the Scannit framework for scanning:
import com.scannit.annotations.Scanner;
public class MyApp {
public static void main(String[] args) {
ClassScanner scanner = new ClassScanner();
scanner.scan("com.myapp.package");
List<Class<?>> classes = scanner.getClasses();
for (Class<?> clazz : classes) {
System.out.println(clazz.getName());
}
}
}
In the above examples, we instantly chemocated a ClassSCanner object and called its scan () method to specify the package name to be scanned.Then, we obtain the scanned class list by calling the getClasses () method, and using the loop to traverse and output the name of each class.
3. Comment scanning
In the Scannit framework, we can also filter the scanned class through annotations.The following is an example that shows how to use the Scannit framework for annotation scanning:
import com.scannit.annotations.Scanner;
import com.scannit.annotations.ScannerFilter;
@Scanner
@ScannerFilter(MyAnnotation.class)
public class MyApp {
public static void main(String[] args) {
ClassScanner scanner = new ClassScanner();
scanner.scan("com.myapp.package");
List<Class<?>> classes = scanner.getClasses();
for (Class<?> clazz : classes) {
System.out.println(clazz.getName());
}
}
}
In the above examples, we added @Scanner annotations to the MyApp class, and specified custom annotation Myannotation in the @Scannerfilter annotation.In this way, the class with the Myannotation annotation will be scanned and output.
4. Resource file analysis
In addition to scanning, the Scannit framework can also be used to analyze resource files.The following is an example that shows how to use the Scannit framework to analyze the attribute file (.properties):
import com.scannit.annotations.ResourceScanner;
public class MyApp {
public static void main(String[] args) {
ResourceScanner scanner = new ResourceScanner();
scanner.scan("com.myapp.package");
List<Properties> propertiesList = scanner.getProperties();
for (Properties properties : propertiesList) {
String value = properties.getProperty("my.property.key");
System.out.println(value);
}
}
}
In the above examples, we instantly melt a ResourceScanner object and call its scan () method to specify the package name to be scanned.Then, we obtain the parsed attribute file list by calling the getproperties () method, and use the loop to traverse and output the attribute value of the specified key.
Summarize:
Scannit is a powerful and flexible Java library scanning and analysis framework.By using the Scannit framework, developers can easily obtain the detailed information of the Java class to achieve dynamic processing and configuration.It is hoped that through the analysis of this article, readers can better understand the technical principles of the Scannit framework in the Java library and be able to carry out corresponding development work based on this.
Note: The examples in this article are only used to illustrate the use of the Scannit framework. Please adjust and expand according to specific needs in actual use.
