netty与http服务

客官°小女子只卖身不卖艺 2022-06-07 05:07 169阅读 0赞

http客户端

package httpClient;
    
    import org.apache.commons.httpclient.HttpClient;
    import org.apache.commons.httpclient.methods.PostMethod;
    import org.apache.commons.httpclient.methods.StringRequestEntity;
    
    import java.util.HashMap;
    import java.util.Map;
    
    /**
     * Created by sff on 2017/10/10.
     */
    public class HttpClientTest {
    
        public static void send(String url, String content) throws Exception{
            HttpClient httpClient = new HttpClient();
            httpClient.getParams().setContentCharset("UTF-8");
            PostMethod postMethod = new PostMethod(url);
            Map<String, String> headerMap = new HashMap<>();
            headerMap.put("Host", "****");
            headerMap.put("Accept-Encoding", "gzip");
            for (Map.Entry<String, String> entry : headerMap.entrySet()) {
                postMethod.addRequestHeader(entry.getKey(), entry.getValue());
            }
            StringRequestEntity entity = new StringRequestEntity(content, "text/plain", "UTF-8");
            postMethod.setRequestEntity(entity);
            try {
                int result = httpClient.executeMethod(postMethod);
                if (result == 200) {
                    System.out.println("发送成功");
                } else{
                    System.out.println("发送失败");
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    
        public static void main(String[] args) throws Exception{
            StringBuilder stringBuilder = new StringBuilder("发送内容：\n");
    //        for(int i = 0; i < 1000; i++){
                stringBuilder.append(0).append(" ");
                for(int j = 0; j < 1000; j++){
                    stringBuilder.append(j);
                }
                stringBuilder.append("\n");
    //        }
            send("http://127.0.0.1:8088?", stringBuilder.toString());
        }
    }

postMethod的setRequestEntity()方法是想post方法中放入参数，看requestEntity实现类有很多种

netty做http服务

netty

package httpServer;
    
    import io.netty.bootstrap.ServerBootstrap;
    import io.netty.channel.*;
    import io.netty.channel.nio.NioEventLoopGroup;
    import io.netty.channel.socket.SocketChannel;
    import io.netty.channel.socket.nio.NioServerSocketChannel;
    import io.netty.handler.codec.http.HttpObjectAggregator;
    import io.netty.handler.codec.http.HttpRequestDecoder;
    import io.netty.handler.codec.http.HttpRequestEncoder;
    import io.netty.handler.codec.http.HttpServerCodec;
    import io.netty.handler.stream.ChunkedWriteHandler;
    import logbus.agent.log.LogDefinition;
    import logbus.agent.netty.codec.XDecoderFactory;
    import logbus.agent.netty.codec.XEncoderFactory;
    import logbus.agent.sink.Sink;
    import logbus.agent.source.impl.server.netty.ServerSourceHandlerFactory;
    import logbus.protocol.netty.XNetty;
    
    import java.util.Map;
    
    /**
     * http请求的netty服务器
     * Created by sff on 2017/10/9.
     */
    public class HttpServerSourceNetty implements XNetty {
        /** 端口号 */
        private int port;
    
        // 分配用于处理事务的线程组数量
        protected static final int bisGroupSize = Runtime.getRuntime().availableProcessors();
        // 每个线程组中线程的数量
        protected static final int worGroupSize = 2;
    
    
        /**
         * 初始化
         * @param port
         * @param encrypt
         * @throws InterruptedException
         */
        public HttpServerSourceNetty(String groupName, String sourceName, int port, boolean encrypt) throws InterruptedException{
            this.port = port;
            try{
                start();
            } catch (InterruptedException e){
                String msg = new StringBuilder("name值为").append(sourceName).append(
                        "的source的server服务器开启失败").toString();
                LogDefinition.COMMON.error(msg, e);
                throw new InterruptedException(msg);
            }
        }
    
        @Override
        public void start() throws InterruptedException{
            EventLoopGroup boss = new NioEventLoopGroup(bisGroupSize);
            EventLoopGroup worker = new NioEventLoopGroup(worGroupSize);
            ServerBootstrap bootstrap = new ServerBootstrap();
            //group函数其实就是将parentGroup和ChildGroup进行赋值，其中parentGroup用于处理accept事件，ChildGroup用于处理accpt的Channel的IO事件。
            bootstrap.group(boss, worker);
            bootstrap.channel(NioServerSocketChannel.class);
            bootstrap.option(ChannelOption.SO_BACKLOG, 128);
            bootstrap.option(ChannelOption.TCP_NODELAY, true);
            bootstrap.childOption(ChannelOption.SO_KEEPALIVE, true);
            bootstrap.childHandler(new ChannelInitializer<SocketChannel>() {
                @Override
                protected void initChannel(SocketChannel socketChannel) throws Exception{
                    ChannelPipeline p = socketChannel.pipeline();
                    // server端发送的是httpResponse，所以要使用HttpResponseEncoder进行编码
                    p.addLast(new HttpServerCodec());
                    p.addLast("aggregator", new HttpObjectAggregator(64 * 1024 * 1024));
                    p.addLast("chunkedWriter", new ChunkedWriteHandler());
                    p.addLast(new HttpServerSourceHandlerFactory().getHandler());
                }
            });
            ChannelFuture f = bootstrap.bind(port).sync();
            if(f.isSuccess()){
    
            }
        }
        
    }

netty处理的handler

package feedback.communicate.netty.http;
    
    import io.netty.buffer.ByteBuf;
    import io.netty.buffer.ByteBufAllocator;
    import io.netty.channel.ChannelHandlerContext;
    import io.netty.channel.ChannelInboundHandlerAdapter;
    import io.netty.handler.codec.http.*;
    
    import java.net.HttpCookie;
    import java.net.URI;
    import java.util.List;
    import java.util.Map;
    
    /**
     * http server handler
     * Created by sff on 2018/4/20.
     */
    public class HttpServerHandler extends ChannelInboundHandlerAdapter {
    
        public HttpServerHandler(){
            super();
        }
    
        private List<String> splitMultiCookies(String header) {
            List<String> cookies = new java.util.ArrayList<String>();
            int quoteCount = 0;
            int p, q;
            for (p = 0, q = 0; p < header.length(); p++) {
                char c = header.charAt(p);
                if (c == '"') quoteCount++;
                if (c == ';' && (quoteCount % 2 == 0)) {
                    // it is comma and not surrounding by double-quotes
                    cookies.add(header.substring(q, p));
                    q = p + 1;
                }
            }
            cookies.add(header.substring(q));
            return cookies;
        }
    
        /**
         * 接收get请求的数据
         * @param ctx
         * @param msg
         */
        public void handler(ChannelHandlerContext ctx, Object msg) throws Exception{
            if (msg instanceof HttpRequest) {
                System.out.println("###################");
                FullHttpRequest request = (FullHttpRequest) msg;
                // 收取cookie
                String cookieHeader = request.headers().get(HttpHeaderNames.COOKIE);
                List<String> cookieStrs = splitMultiCookies(cookieHeader);
                for(int i = 0; i < cookieStrs.size(); i++) {
                    List<HttpCookie> list = HttpCookie.parse(cookieStrs.get(i));
                    for (int j = 0; j < list.size(); j++) {
                        System.out.println(list.get(j).toString());
                    }
                }
                // if GET Method: should not try to create a HttpPostRequestDecoder
                if (request.method().equals(HttpMethod.GET)) {
                    URI uri = new URI(request.uri());
                    QueryStringDecoder decoderQuery = new QueryStringDecoder(request.getUri());
                    Map<String, List<String>> uriAttributes = decoderQuery.parameters();
                    System.out.println("GET内容：" + uri.getQuery());
                }
                //判断request请求是否是post请求
                if (request.method().equals(HttpMethod.POST)) {
                    ByteBuf content = request.content();
                    byte[] req = new byte[content.readableBytes()];
                    content.readBytes(req);
                    String resultStr = new String(req, "UTF-8");
                    System.out.println("POST内容：" + resultStr);
                    content.release();
                } else{
                    request.release();
                }
                // 发送消息
                String r = "sff is a good man.";
                ByteBuf bf = ByteBufAllocator.DEFAULT.buffer(8*1024);
                bf.writeBytes(r.getBytes());
                HttpHeaders httpHeaders = new DefaultHttpHeaders();
                HttpCookie cookie1 = new HttpCookie("feedback", "sff");
                cookie1.setHttpOnly(true);
                HttpCookie cookie2 = new HttpCookie("session_id", "123456");
                HttpCookie cookie3 = new HttpCookie("tenant", "STULIB");
                httpHeaders.add(HttpHeaderNames.SET_COOKIE, cookie1); // add 是可以添加同名的对象，set会把同名的对象覆盖掉
                httpHeaders.add(HttpHeaderNames.SET_COOKIE, cookie2);
                httpHeaders.add(HttpHeaderNames.SET_COOKIE, cookie3);
                httpHeaders.set(HttpHeaderNames.CONTENT_TYPE, "text/plain");
                httpHeaders.set(HttpHeaderNames.CONTENT_LENGTH, bf.readableBytes());
                httpHeaders.set(HttpHeaderNames.CONNECTION, HttpHeaderValues.KEEP_ALIVE);
                FullHttpResponse response = new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK, bf);
                response.headers().set(httpHeaders);
                ctx.writeAndFlush(response);
            }
        }
    
        @Override
        public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
            handler(ctx, msg);
        }
    
    
        @Override
        public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause)
                throws Exception {
            // ignore
        }
    }

FullHttpRequest的类里面可以查询header，body等数据

参考：[Netty处理HTTP之GET,POST请求][Netty_HTTP_GET_POST]

[Netty_HTTP_GET_POST]: http://blog.csdn.net/junlong750/article/details/51352722