在Netty通道中调度HttpRequest可以通过以下步骤实现:
以下是一个示例代码:
public class HttpServer {
public static void main(String[] args) throws Exception {
EventLoopGroup bossGroup = new NioEventLoopGroup();
EventLoopGroup workerGroup = new NioEventLoopGroup();
try {
ServerBootstrap bootstrap = new ServerBootstrap();
bootstrap.group(bossGroup, workerGroup)
.channel(NioServerSocketChannel.class)
.childHandler(new ChannelInitializer<SocketChannel>() {
@Override
protected void initChannel(SocketChannel ch) throws Exception {
ChannelPipeline pipeline = ch.pipeline();
pipeline.addLast(new HttpRequestDecoder());
pipeline.addLast(new HttpResponseEncoder());
pipeline.addLast(new HttpServerHandler());
}
});
ChannelFuture future = bootstrap.bind(8080).sync();
future.channel().closeFuture().sync();
} finally {
bossGroup.shutdownGracefully();
workerGroup.shutdownGracefully();
}
}
}
public class HttpServerHandler extends SimpleChannelInboundHandler<HttpRequest> {
@Override
protected void channelRead0(ChannelHandlerContext ctx, HttpRequest request) throws Exception {
// 根据request的URI进行路由和调度
String uri = request.uri();
if ("/api/user".equals(uri)) {
// 处理用户相关的请求
handleUserRequest(ctx, request);
} else if ("/api/product".equals(uri)) {
// 处理产品相关的请求
handleProductRequest(ctx, request);
} else {
// 未知的请求
sendErrorResponse(ctx, HttpResponseStatus.NOT_FOUND);
}
}
private void handleUserRequest(ChannelHandlerContext ctx, HttpRequest request) {
// 处理用户请求的逻辑
// ...
// 发送响应
sendResponse(ctx, HttpResponseStatus.OK, "User request handled successfully");
}
private void handleProductRequest(ChannelHandlerContext ctx, HttpRequest request) {
// 处理产品请求的逻辑
// ...
// 发送响应
sendResponse(ctx, HttpResponseStatus.OK, "Product request handled successfully");
}
private void sendErrorResponse(ChannelHandlerContext ctx, HttpResponseStatus status) {
FullHttpResponse response = new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, status);
ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE);
}
private void sendResponse(ChannelHandlerContext ctx, HttpResponseStatus status, String content) {
FullHttpResponse response = new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, status,
Unpooled.copiedBuffer(content, CharsetUtil.UTF_8));
response.headers().set(HttpHeaderNames.CONTENT_TYPE, "text/plain; charset=UTF-8");
ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE);
}
}
这是一个简单的示例,通过Netty实现了一个简单的HTTP服务器,并根据请求的URI进行了路由和调度。根据具体的业务需求,可以在处理器中添加更多的逻辑和功能。
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