> anoyi中的GrpcServer
1. 查看属性
~~~
private final GrpcProperties grpcProperties;
private final CommonService commonService;
private ServerInterceptor serverInterceptor;
private Server server;
~~~
grpcProperties是服务端的属性，包含端口，CommonService 是继承了proto协议生成CommonServiceGrpc的CommonServiceImplBase这个类，并重写了handle这个接收请求的方法，实现基层通讯，serverInterceptor是拦截器，也就是token，令牌等的使用，Server是grpc的类，是服务端的基础请求封装
2. 构造方法（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
~~~
/**
* 启动服务
* @throws Exception 异常
*/
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其实就是一个builder，ServerInterceptors可以把拦截器绑定到通道，接下来看看这个方法
```
server = ServerBuilder.forPort(port).addService(ServerInterceptors.intercept(commonService, serverInterceptor)).build().start();
```
这个方法意思是绑定端口，绑定拦截器生成grpc的server，接下来看看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();
}
~~~
这个方法其实是绑定线程，启动服务端，这样grpc课程基本结束了，具体怎么样，自己去摸索，我会提供github代码
[https://github.com/ChinaSilence/spring-boot-starter-grpc](https://github.com/ChinaSilence/spring-boot-starter-grpc)
