import net.bytebuddy.ByteBuddy;
import net.bytebuddy.implementation.MethodDelegation;
import net.bytebuddy.matcher.ElementMatchers;
public class DynamicProxyExample {
public static void main(String[] args) throws Exception {
String proxyResult = new ByteBuddy()
.subclass(String.class)
.method(ElementMatchers.named("toUpperCase"))
.intercept(MethodDelegation.to(MyInterceptor.class))
.make()
.load(Thread.currentThread().getContextClassLoader())
.getLoaded()
.newInstance()
.toUpperCase();
System.out.println(proxyResult);
}
public static class MyInterceptor {
public static String intercept() {
System.out.println("Before invoking the method");
String result = "Hello, Byte Buddy!";
System.out.println("After invoking the method");
return result;
}
}
}
Before invoking the method
After invoking the method
HELLO, BYTE BUDDY!
<dependencies>
<dependency>
<groupId>net.bytebuddy</groupId>
<artifactId>byte-buddy</artifactId>
<version>1.11.12</version>
</dependency>
</dependencies>
