Closed
Description
tmaccount
@GrpcService
public class HelloService extends SimpleGrpc.SimpleImplBase {
private static final Logger log = LoggerFactory.getLogger(AuthenticationService.class);
@Override
public void sayHello(HelloRequest req, StreamObserver<HelloReply> responseObserver) {
log.info("Hello " + req.getName());
if (req.getName().startsWith("error")) {
throw new IllegalArgumentException("Bad name: " + req.getName());
}
if (req.getName().startsWith("internal")) {
throw new RuntimeException();
}
HelloReply reply = HelloReply.newBuilder().setMessage("Hello ==> " + req.getName()).build();
responseObserver.onNext(reply);
responseObserver.onCompleted();
}
}tmcore
@Service
public class HelloService {
private static final Logger log = LoggerFactory.getLogger(AuthenticationService.class);
@GrpcClient("tmaccount")
private SimpleGrpc.SimpleBlockingStub simpleStub;
public String sendMessage(String name) {
HelloRequest request = HelloRequest.newBuilder().setName(name).build();
HelloReply response = simpleStub.sayHello(request);
return response.getMessage();
}
}tmcore application.properties
spring.application.name=tmcore
server.port=8081
# Configuration for MySQL Database
spring.jpa.hibernate.ddl-auto=update
spring.datasource.url=jdbc:mysql://localhost:3306/tmcore
spring.datasource.username=${DB_USERNAME}
spring.datasource.password=${DB_PASSWORD}
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.jpa.show-sql:true
grpc.client.tmaccount.address=static://localhost:9090
grpc.client.tmaccount.negotiationType=plaintext
When I tried to run helloService.sendMessage("demo"), it shows error below:
java.lang.NullPointerException: Cannot invoke "org.springframework.grpc.sample.proto.SimpleGrpc$SimpleBlockingStub.sayHello(org.springframework.grpc.sample.proto.HelloRequest)" because "this.simpleStub" is nullIs there any configuration I've done wrong?