dubbo spi #4310
Description
- [*] I have searched the issues of this repository and believe that this is not a duplicate.
- [*] I have checked the FAQ of this repository and believe that this is not a duplicate.
Environment
- Dubbo version: 2.7.2
- Operating System version: windows10(18362.175)
- Java version: jdk12.0.1
Steps to reproduce this issue
- create interface
@SPI
public interface Robot {
void sayHello();
}
- implements Roobot
public class Bumblebee implements Robot {
@Override
public void sayHello() {
System.out.println("Hello, I am Bumblebee.");
}
}
public class OptimusPrime implements Robot {
@Override
public void sayHello() {
System.out.println("Hello, I am Optimus Prime.");
}
}
- create a folder
/MEAT-INF/dubbo/
optimusPrime=com.huifer.dubbo.client.spi.OptimusPrime
bumblebee=com.huifer.dubbo.client.spi.Bumblebee
- run demo
public class SpiDemo {
public static void main(String[] args) {
ExtensionLoader<Robot> extensionLoader =
ExtensionLoader.getExtensionLoader(Robot.class);
Robot optimusPrime = extensionLoader.getExtension("optimusPrime");
optimusPrime.sayHello();
Robot bumblebee = extensionLoader.getExtension("bumblebee");
bumblebee.sayHello();
}
}
Pls. provide GitHub address to reproduce this issue.
Expected Result
Console output
Hello, I am Optimus Prime.
Hello, I am Bumblebee.
Actual Result
- It has an exception and does not find optimusPrime
Exception in thread "main" java.lang.IllegalStateException: No such extension com.huifer.dubbo.client.spi.Robot by name optimusPrime
at org.apache.dubbo.common.extension.ExtensionLoader.findException(ExtensionLoader.java:520)
at org.apache.dubbo.common.extension.ExtensionLoader.createExtension(ExtensionLoader.java:527)
at org.apache.dubbo.common.extension.ExtensionLoader.getExtension(ExtensionLoader.java:351)
at com.huifer.dubbo.client.spi.SpiDemo.main(SpiDemo.java:18)