本文主要是介绍简单阐述一下Netty中Channel的生命周期(SimpleChannelInboundHandler),对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!
文章目录
- 1.channelRegistered(注册事件)
- 2.channelUnregistered(取消注册事件)
- 3.channelActive(是否是活跃)
- 4.channelInactive(不活跃)
- 5.channelReadComplete(读取完毕事件)
- 6.userEventTriggered(用户事件触发)
- 7.channelWritabilityChanged(可写更改)
- 8.exceptionCaught(捕获到异常)
- 9.handlerAdded(拦截器的添加)
- 10.handlerRemoved(拦截器移除)
- 11.channelRead0(读取数据)
- 12.执行顺序(当浏览器发送一次请求后)
1.channelRegistered(注册事件)
@Override
public void channelRegistered(ChannelHandlerContext ctx) throws Exception {
System.out.println("channel注册了");
super.channelRegistered(ctx);
}
2.channelUnregistered(取消注册事件)
@Override
public void channelUnregistered(ChannelHandlerContext ctx) throws Exception {
System.out.println("channel移除了");
super.channelUnregistered(ctx);
}
3.channelActive(是否是活跃)
@Override
public void channelActive(ChannelHandlerContext ctx) throws Exception {
System.out.println("channel 活跃");
super.channelActive(ctx);
}
4.channelInactive(不活跃)
@Override
public void channelInactive(ChannelHandlerContext ctx) throws Exception {
System.out.println("channel 不活跃,断开连接");
super.channelInactive(ctx);
}
5.channelReadComplete(读取完毕事件)
@Override
public void channelReadComplete(ChannelHandlerContext ctx) throws Exception {
System.out.println("channel 读取完毕");
super.channelReadComplete(ctx);
}
6.userEventTriggered(用户事件触发)
@Override
public void userEventTriggered(ChannelHandlerContext ctx, Object evt) throws Exception {
System.out.println("channel 用户事件触发");
super.userEventTriggered(ctx, evt);
}
7.channelWritabilityChanged(可写更改)
@Override
public void channelWritabilityChanged(ChannelHandlerContext ctx) throws Exception {
System.out.println("channel 可写更改");
super.channelWritabilityChanged(ctx);
}
8.exceptionCaught(捕获到异常)
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
System.out.println("channel 捕获到异常了,关闭了");
super.exceptionCaught(ctx, cause);
}
9.handlerAdded(拦截器的添加)
@Override
public void handlerAdded(ChannelHandlerContext ctx) throws Exception {
System.out.println("channel 助手类添加");
super.handlerAdded(ctx);
}
10.handlerRemoved(拦截器移除)
@Override
public void handlerRemoved(ChannelHandlerContext ctx) throws Exception {
System.out.println("channel 助手类移除");
super.handlerRemoved(ctx);
}
11.channelRead0(读取数据)
@Override
protected void channelRead0(ChannelHandlerContext ctx, HttpObject msg)
throws Exception {
Channel channel = ctx.channel();//获取当前channel
System.out.println(channel.remoteAddress()); //显示客户端的远程地址
//定义发送的数据消息
ByteBuf content = Unpooled.copiedBuffer("Hello cxl",CharsetUtil.UTF_8);
//构建一个http响应
FullHttpResponse response =
new DefaultFullHttpResponse
(HttpVersion.HTTP_1_1,
HttpResponseStatus.OK,
content);
response.headers().set(HttpHeaderNames.CONTENT_TYPE,"text/plain");
response.headers().set(HttpHeaderNames.CONTENT_LENGTH,content.readableBytes());
//把响应刷到客户端
ctx.writeAndFlush(response);
}
12.执行顺序(当浏览器发送一次请求后)
这篇关于简单阐述一下Netty中Channel的生命周期(SimpleChannelInboundHandler)的文章就介绍到这儿,希望我们推荐的文章对大家有所帮助,也希望大家多多支持为之网!