> anoyi中的GrpcServer
1. 查看屬性
~~~
private final GrpcProperties grpcProperties;
private final CommonService commonService;
private ServerInterceptor serverInterceptor;
private Server server;
~~~
grpcProperties是服務端的屬性，包含端口，CommonService 是繼承了proto協議生成CommonServiceGrpc的CommonServiceImplBase這個類，并重寫了handle這個接收請求的方法，實現基層通訊，serverInterceptor是攔截器，也就是token，令牌等的使用，Server是grpc的類，是服務端的基礎請求封裝
2. 構造方法（自己看）
~~~
public GrpcServer(GrpcProperties grpcProperties, CommonService commonService) {
this.grpcProperties = grpcProperties;
this.commonService = commonService;
}
public GrpcServer(GrpcProperties grpcProperties, CommonService commonService, ServerInterceptor serverInterceptor) {
this.grpcProperties = grpcProperties;
this.commonService = commonService;
this.serverInterceptor = serverInterceptor;
}
~~~
3. 重要方法
~~~
/**
* 啟動服務
* @throws Exception 異常
*/
public void start() throws Exception{
int port = grpcProperties.getPort();
if (serverInterceptor != null){
server = ServerBuilder.forPort(port).addService(ServerInterceptors.intercept(commonService, serverInterceptor)).build().start();
}else {
Class clazz = grpcProperties.getServerInterceptor();
if (clazz == null){
server = ServerBuilder.forPort(port).addService(commonService).build().start();
}else {
server = ServerBuilder.forPort(port).addService(ServerInterceptors.intercept(commonService, (ServerInterceptor) clazz.newInstance())).build().start();
}
}
log.info("gRPC Server started, listening on port " + server.getPort());
startDaemonAwaitThread();
}
~~~
ServerBuilder其實就是一個builder，ServerInterceptors可以把攔截器綁定到通道，接下來看看這個方法
```
server = ServerBuilder.forPort(port).addService(ServerInterceptors.intercept(commonService, serverInterceptor)).build().start();
```
這個方法意思是綁定端口，綁定攔截器生成grpc的server，接下來看看startDaemonAwaitThread();
~~~
private void startDaemonAwaitThread() {
Thread awaitThread = new Thread(()->{
try {
GrpcServer.this.server.awaitTermination();
} catch (InterruptedException e) {
log.warn("gRPC server stopped." + e.getMessage());
}
});
awaitThread.setDaemon(false);
awaitThread.start();
}
~~~
這個方法其實是綁定線程，啟動服務端，這樣grpc課程基本結束了，具體怎么樣，自己去摸索，我會提供github代碼
[https://github.com/ChinaSilence/spring-boot-starter-grpc](https://github.com/ChinaSilence/spring-boot-starter-grpc)
