netty 处理http请求

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netty 处理http请求

       

               

                                 

请求响应类

          

FullHttpRequest

public interface FullHttpRequest extends HttpRequest, FullHttpMessage {

    FullHttpRequest duplicate();
    FullHttpRequest retainedDuplicate();

    FullHttpRequest copy();
    FullHttpRequest replace(ByteBuf var1);

    FullHttpRequest retain();
    FullHttpRequest retain(int var1);

    FullHttpRequest touch();
    FullHttpRequest touch(Object var1);

    FullHttpRequest setUri(String var1);
    FullHttpRequest setMethod(HttpMethod var1);
    FullHttpRequest setProtocolVersion(HttpVersion var1);
}

        

HttpRequest

public interface HttpRequest extends HttpMessage {

    HttpMethod method();
    HttpRequest setMethod(HttpMethod var1);

    String uri();
    HttpRequest setUri(String var1);

    HttpRequest setProtocolVersion(HttpVersion var1);
}

         

DefaultFullHttpRequest

public class DefaultFullHttpRequest extends DefaultHttpRequest implements FullHttpRequest {
    private final ByteBuf content;
    private final HttpHeaders trailingHeader;
    private int hash;

    public DefaultFullHttpRequest(HttpVersion httpVersion, HttpMethod method, String uri) {
    public DefaultFullHttpRequest(HttpVersion httpVersion, HttpMethod method, String uri, ByteBuf content) {
    public DefaultFullHttpRequest(HttpVersion httpVersion, HttpMethod method, String uri, boolean validateHeaders) {
    public DefaultFullHttpRequest(HttpVersion httpVersion, HttpMethod method, String uri, ByteBuf content, boolean validateHeaders) {

    public DefaultFullHttpRequest(HttpVersion httpVersion, HttpMethod method, String uri, ByteBuf content, HttpHeaders headers, HttpHeaders trailingHeader) {
        super(httpVersion, method, uri, headers);
        this.content = (ByteBuf)ObjectUtil.checkNotNull(content, "content");
        this.trailingHeader = (HttpHeaders)ObjectUtil.checkNotNull(trailingHeader, "trailingHeader");
    }


    public HttpHeaders trailingHeaders() {
    public ByteBuf content() {

    public int refCnt() {

    public FullHttpRequest retain() {
    public FullHttpRequest retain(int increment) {

    public FullHttpRequest touch() {
    public FullHttpRequest touch(Object hint) {

    public boolean release() {
    public boolean release(int decrement) {

    public FullHttpRequest setUri(String uri) {
    public FullHttpRequest setMethod(HttpMethod method) {
    public FullHttpRequest setProtocolVersion(HttpVersion version) {

    public FullHttpRequest duplicate() {
    public FullHttpRequest retainedDuplicate() {

    public FullHttpRequest copy() {
    public FullHttpRequest replace(ByteBuf content) {

    public int hashCode() {
    public boolean equals(Object o) {
    public String toString() {

         

FullHttpResponse

public interface FullHttpResponse extends HttpResponse, FullHttpMessage {

    FullHttpResponse duplicate();
    FullHttpResponse retainedDuplicate();

    FullHttpResponse copy();
    FullHttpResponse replace(ByteBuf var1);

    FullHttpResponse retain();
    FullHttpResponse retain(int var1);

    FullHttpResponse touch();
    FullHttpResponse touch(Object var1);

    FullHttpResponse setProtocolVersion(HttpVersion var1);
    FullHttpResponse setStatus(HttpResponseStatus var1);
}

         

HttpResponse

public interface HttpResponse extends HttpMessage {

    HttpResponseStatus status();
    HttpResponse setStatus(HttpResponseStatus var1);

    HttpResponse setProtocolVersion(HttpVersion var1);
}

              

DefaultFullHttpResponse

public class DefaultFullHttpResponse extends DefaultHttpResponse implements FullHttpResponse {
    private final ByteBuf content;
    private final HttpHeaders trailingHeaders;
    private int hash;

    public DefaultFullHttpResponse(HttpVersion version, HttpResponseStatus status) {
    public DefaultFullHttpResponse(HttpVersion version, HttpResponseStatus status, ByteBuf content) {
    public DefaultFullHttpResponse(HttpVersion version, HttpResponseStatus status, boolean validateHeaders) {
    public DefaultFullHttpResponse(HttpVersion version, HttpResponseStatus status, boolean validateHeaders, boolean singleFieldHeaders) {
    public DefaultFullHttpResponse(HttpVersion version, HttpResponseStatus status, ByteBuf content, boolean validateHeaders) {
    public DefaultFullHttpResponse(HttpVersion version, HttpResponseStatus status, ByteBuf content, boolean validateHeaders, boolean singleFieldHeaders) {

    public DefaultFullHttpResponse(HttpVersion version, HttpResponseStatus status, ByteBuf content, HttpHeaders headers, HttpHeaders trailingHeaders) {
        super(version, status, headers);
        this.content = (ByteBuf)ObjectUtil.checkNotNull(content, "content");
        this.trailingHeaders = (HttpHeaders)ObjectUtil.checkNotNull(trailingHeaders, "trailingHeaders");
    }


    public HttpHeaders trailingHeaders() {
    public ByteBuf content() {

    public int refCnt() {

    public FullHttpResponse retain() {
    public FullHttpResponse retain(int increment) {

    public FullHttpResponse touch() {
    public FullHttpResponse touch(Object hint) {

    public boolean release() {
    public boolean release(int decrement) {

    public FullHttpResponse setProtocolVersion(HttpVersion version) {
    public FullHttpResponse setStatus(HttpResponseStatus status) {

    public FullHttpResponse duplicate() {
    public FullHttpResponse retainedDuplicate() {

    public FullHttpResponse copy() {
    public FullHttpResponse replace(ByteBuf content) {

    public int hashCode() {    public boolean equals(Object o) {
    public String toString() {

          

HttpMessage

public interface HttpMessage extends HttpObject {

    HttpVersion protocolVersion();
    HttpMessage setProtocolVersion(HttpVersion var1);

    HttpHeaders headers();
}

      

HttpObject

public interface HttpObject extends DecoderResultProvider {
    /** @deprecated */
    @Deprecated
    DecoderResult getDecoderResult();
}

                  

DecoderResultProvider

public interface DecoderResultProvider {

    DecoderResult decoderResult();
    void setDecoderResult(DecoderResult var1);
}

       

             

                                 

编解码类

     

QueryStringDecoder

public class QueryStringDecoder {
    private static final int DEFAULT_MAX_PARAMS = 1024;
    private final Charset charset;
    private final String uri;
    private final int maxParams;
    private final boolean semicolonIsNormalChar;
    private int pathEndIdx;
    private String path;
    private Map> params;


    public QueryStringDecoder(String uri) {
    public QueryStringDecoder(String uri, boolean hasPath) {
    public QueryStringDecoder(String uri, Charset charset) {
    public QueryStringDecoder(String uri, Charset charset, boolean hasPath) {
    public QueryStringDecoder(String uri, Charset charset, boolean hasPath, int maxParams) {
    public QueryStringDecoder(String uri, Charset charset, boolean hasPath, int maxParams, boolean semicolonIsNormalChar) {

    public QueryStringDecoder(URI uri) {
    public QueryStringDecoder(URI uri, Charset charset) {
    public QueryStringDecoder(URI uri, Charset charset, int maxParams) {
    public QueryStringDecoder(URI uri, Charset charset, int maxParams, boolean semicolonIsNormalChar) {


    public String uri() {
    public String path() {

    public String rawPath() {
    public String rawQuery() {
    public Map> parameters() {


    public static String decodeComponent(String s) {
    public static String decodeComponent(String s, Charset charset) {

    public String toString() {


    private int pathEndIdx() {
    private static int findPathEndIndex(String uri) {
    private static String decodeComponent(String s, int from, int toExcluded, Charset charset, boolean isPath) {
    private static boolean addParam(String s, int nameStart, int valueStart, int valueEnd, Map> params, Charset charset) {
    private static Map> decodeParams(String s, int from, Charset charset, int paramsLimit, boolean semicolonIsNormalChar) {

          

HttpPostRequestDecoder

public class HttpPostRequestDecoder implements InterfaceHttpPostRequestDecoder {
    static final int DEFAULT_DISCARD_THRESHOLD = 10485760;
    private final InterfaceHttpPostRequestDecoder decoder;


    public HttpPostRequestDecoder(HttpRequest request) {
    public HttpPostRequestDecoder(HttpDataFactory factory, HttpRequest request) {
    public HttpPostRequestDecoder(HttpDataFactory factory, HttpRequest request, Charset charset) {


    public static boolean isMultipart(HttpRequest request) {
    public boolean isMultipart() {

    public void setDiscardThreshold(int discardThreshold) {
    public int getDiscardThreshold() {

    public List getBodyHttpDatas() {
    public List getBodyHttpDatas(String name) {
    public InterfaceHttpData getBodyHttpData(String name) {

    public InterfaceHttpPostRequestDecoder offer(HttpContent content) {

    public boolean hasNext() {
    public InterfaceHttpData next() {
    public InterfaceHttpData currentPartialHttpData() {

    public void destroy() {
    public void cleanFiles() {
    public void removeHttpDataFromClean(InterfaceHttpData data) {

    protected static String[] getMultipartDataBoundary(String contentType) {

    private static String[] splitHeaderContentType(String sb) {


*******
内部类：HttpPostRequestDecoder.ErrorDataDecoderException

    public static class ErrorDataDecoderException extends DecoderException {
        private static final long serialVersionUID = 5020247425493164465L;

        public ErrorDataDecoderException() {
        public ErrorDataDecoderException(String msg) {
        public ErrorDataDecoderException(Throwable cause) {
        public ErrorDataDecoderException(String msg, Throwable cause) {


*******
内部类：HttpPostRequestDecoder.EndOfDataDecoderException

    public static class EndOfDataDecoderException extends DecoderException {
        private static final long serialVersionUID = 1336267941020800769L;

        public EndOfDataDecoderException() {


*******
内部类：HttpPostRequestDecoder.NotEnoughDataDecoderException

    public static class NotEnoughDataDecoderException extends DecoderException {
        private static final long serialVersionUID = -7846841864603865638L;

        public NotEnoughDataDecoderException() {
        public NotEnoughDataDecoderException(String msg) {
        public NotEnoughDataDecoderException(Throwable cause) {
        public NotEnoughDataDecoderException(String msg, Throwable cause) {


*******
内部枚举：MultiPartStatus

    protected static enum MultiPartStatus {
        NOTSTARTED,
        PREAMBLE,
        HEADERDELIMITER,
        DISPOSITION,
        FIELD,
        FILEUPLOAD,
        MIXEDPREAMBLE,
        MIXEDDELIMITER,
        MIXEDDISPOSITION,
        MIXEDFILEUPLOAD,
        MIXEDCLOSEDELIMITER,
        CLOSEDELIMITER,
        PREEPILOGUE,
        EPILOGUE;

        private MultiPartStatus() {
        }
    }
}

         

HttpResponseEncoder

public class HttpResponseEncoder extends HttpObjectEncoder {

    public HttpResponseEncoder() {
    public boolean acceptOutboundMessage(Object msg) throws Exception {

    protected void encodeInitialLine(ByteBuf buf, HttpResponse response) throws Exception {
    protected void sanitizeHeadersBeforeEncode(HttpResponse msg, boolean isAlwaysEmpty) {
    protected boolean isContentAlwaysEmpty(HttpResponse msg) {

            

                

                                 

使用示例

     

**********

服务端

      

CustomHttpHandler

public class CustomHttpHandler extends SimpleChannelInboundHandler {

    @Override
    protected void channelRead0(ChannelHandlerContext channelHandlerContext, FullHttpRequest fullHttpRequest) throws Exception {
        switch (fullHttpRequest.method().name()){
            case "GET": processGetRequest(fullHttpRequest); break;
            case "POST": {
                if (fullHttpRequest.headers().get("Content-Type").contains("x-www-form-urlencoded")){
                    processPostFormRequest(fullHttpRequest);
                }else if (fullHttpRequest.headers().get("Content-Type").contains("application/json")){
                    processPostJsonRequest(fullHttpRequest);
                }
            }
        }

        ByteBuf buf = PooledByteBufAllocator.DEFAULT.buffer();
        buf.writeCharSequence("success", StandardCharsets.UTF_8);
        FullHttpResponse response = new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK, buf);
        response.headers().set("Content-Type","application/json;charset=UTF-8");
        response.headers().set("Content-Length",response.content().readableBytes());

        channelHandlerContext.channel().writeAndFlush(response).addListener(ChannelFutureListener.CLOSE);
    }

    private void processGetRequest(FullHttpRequest request){
        System.out.println("处理get请求");

        QueryStringDecoder decoder = new QueryStringDecoder(request.uri());
        Map> params = decoder.parameters();
        params.forEach((key, value) -> System.out.println(key + " ==> "+ value));
    }

    private void processPostFormRequest(FullHttpRequest request){
        System.out.println("处理post form请求");

        HttpPostRequestDecoder decoder = new HttpPostRequestDecoder(request);
        List httpDataList = decoder.getBodyHttpDatas();
        httpDataList.forEach(item -> {
            if (item.getHttpDataType() == InterfaceHttpData.HttpDataType.Attribute){
                Attribute attribute = (Attribute) item;

                try {
                    System.out.println(attribute.getName() + " ==> " + attribute.getValue());
                }catch (Exception e){
                    e.printStackTrace();
                }

            }
        });
    }

    private void processPostJsonRequest(FullHttpRequest request){
        System.out.println("处理post json请求");

        ByteBuf content = request.content();
        byte[] bytes = new byte[content.readableBytes()];
        content.readBytes(bytes);

        JSONObject jsonObject = JSONObject.parseObject(new String(bytes));
        jsonObject.getInnerMap().forEach((key,value) -> System.out.println(key + " ==> " + value));
    }
}

         

NettyServer

public class NettyServer {

    public static void startServer(int port){
        EventLoopGroup bossGroup = new NioEventLoopGroup();
        EventLoopGroup workerGroup = new NioEventLoopGroup();

        try {
            ServerBootstrap serverBootstrap = new ServerBootstrap();
            serverBootstrap.group(bossGroup, workerGroup)
                    .channel(NioServerSocketChannel.class)
                    .option(ChannelOption.SO_BACKLOG, 128)
                    .childOption(ChannelOption.SO_KEEPALIVE, true)
                    .childHandler(new ChannelInitializer() {

                        @Override
                        protected void initChannel(SocketChannel socketChannel) throws Exception {
                            ChannelPipeline channelPipeline = socketChannel.pipeline();
                            channelPipeline.addLast(new HttpRequestDecoder());
                            channelPipeline.addLast(new HttpResponseEncoder());
                            channelPipeline.addLast(new HttpObjectAggregator(65535));
                            channelPipeline.addLast(new CustomHttpHandler());
                        }
                    });

            ChannelFuture channelFuture = serverBootstrap.bind(port).sync();
            channelFuture.channel().closeFuture().sync();
        }catch (Exception e){
            e.printStackTrace();
        }finally {
            bossGroup.shutdownGracefully();
            workerGroup.shutdownGracefully();
        }
    }

    public static void main(String[] args) {
        startServer(8000);
    }
}

         

**********

使用测试

   

get 请求：localhost:8000/hello?name=瓜田李下&age=20

         

15:20:42.090 [nioEventLoopGroup-3-2] DEBUG io.netty.buffer.AbstractByteBuf - -Dio.netty.buffer.checkBounds: true
15:20:42.091 [nioEventLoopGroup-3-2] DEBUG io.netty.util.ResourceLeakDetectorFactory - Loaded default ResourceLeakDetector: io.netty.util.ResourceLeakDetector@236a9fe3
15:20:42.124 [nioEventLoopGroup-3-1] DEBUG io.netty.util.Recycler - -Dio.netty.recycler.maxCapacityPerThread: 4096
15:20:42.126 [nioEventLoopGroup-3-1] DEBUG io.netty.util.Recycler - -Dio.netty.recycler.ratio: 8
15:20:42.126 [nioEventLoopGroup-3-1] DEBUG io.netty.util.Recycler - -Dio.netty.recycler.chunkSize: 32
15:20:42.126 [nioEventLoopGroup-3-1] DEBUG io.netty.util.Recycler - -Dio.netty.recycler.blocking: false
处理get请求
name ==> [瓜田李下]
age ==> [20]

        

post form请求

         

15:33:25.270 [nioEventLoopGroup-3-1] DEBUG io.netty.buffer.AbstractByteBuf - -Dio.netty.buffer.checkBounds: true
15:33:25.271 [nioEventLoopGroup-3-1] DEBUG io.netty.util.ResourceLeakDetectorFactory - Loaded default ResourceLeakDetector: io.netty.util.ResourceLeakDetector@2e03ba32
15:33:25.307 [nioEventLoopGroup-3-2] DEBUG io.netty.util.Recycler - -Dio.netty.recycler.maxCapacityPerThread: 4096
15:33:25.309 [nioEventLoopGroup-3-2] DEBUG io.netty.util.Recycler - -Dio.netty.recycler.ratio: 8
15:33:25.309 [nioEventLoopGroup-3-2] DEBUG io.netty.util.Recycler - -Dio.netty.recycler.chunkSize: 32
15:33:25.309 [nioEventLoopGroup-3-2] DEBUG io.netty.util.Recycler - -Dio.netty.recycler.blocking: false
处理post form请求
name ==> 瓜田李下
age ==> 20

       

post json请求

         

15:35:44.038 [nioEventLoopGroup-3-2] DEBUG io.netty.buffer.AbstractByteBuf - -Dio.netty.buffer.checkBounds: true
15:35:44.039 [nioEventLoopGroup-3-2] DEBUG io.netty.util.ResourceLeakDetectorFactory - Loaded default ResourceLeakDetector: io.netty.util.ResourceLeakDetector@400ded19
15:35:44.072 [nioEventLoopGroup-3-1] DEBUG io.netty.util.Recycler - -Dio.netty.recycler.maxCapacityPerThread: 4096
15:35:44.074 [nioEventLoopGroup-3-1] DEBUG io.netty.util.Recycler - -Dio.netty.recycler.ratio: 8
15:35:44.074 [nioEventLoopGroup-3-1] DEBUG io.netty.util.Recycler - -Dio.netty.recycler.chunkSize: 32
15:35:44.074 [nioEventLoopGroup-3-1] DEBUG io.netty.util.Recycler - -Dio.netty.recycler.blocking: false
处理post json请求
name ==> 瓜田李下
age ==> 20