Java HTTP 代理demo

HTTP 代理服务器使用 little proxy实现https://github.com/adamfisk/LittleProxy

maven依赖：

<dependency>
            <groupId>org.littleshoot</groupId>
            <artifactId>littleproxy</artifactId>
            <version>1.0.0-beta7</version>
</dependency>

客户端代码：

package com.bigtian;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.InetSocketAddress;
import java.net.Proxy;
import java.net.SocketAddress;
import java.net.URL;
import java.net.URLConnection;

/**
 * Created by bigtian on 15/5/30.
 */
public class ProxyTestCase {

    public static void main(String[] args) throws Exception {
        URL url = new URL("http://www.baidu.com");

        SocketAddress address = new InetSocketAddress("localhost", 8080);

        Proxy proxy = new Proxy(Proxy.Type.HTTP, address);

        URLConnection connection = url.openConnection(proxy);
        connection.connect();
        BufferedReader br = new BufferedReader(new InputStreamReader(connection.getInputStream()));
        String line;
        String result = "";
        while ((line = br.readLine()) != null) {
            result += line;
        }

        System.out.println(result);

    }

}

代理服务器代码：

package com.bigtian;

import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.http.HttpObject;
import io.netty.handler.codec.http.HttpRequest;
import io.netty.handler.codec.http.HttpResponse;
import org.littleshoot.proxy.HttpFilters;
import org.littleshoot.proxy.HttpFiltersAdapter;
import org.littleshoot.proxy.HttpFiltersSourceAdapter;
import org.littleshoot.proxy.HttpProxyServer;
import org.littleshoot.proxy.impl.DefaultHttpProxyServer;

/**
 * Created by bigtian on 15/5/30.
 */
public class ProxyTest {

    public static void main(String[] args) {
        HttpProxyServer server =
                DefaultHttpProxyServer.bootstrap()
                        .withPort(8080)
                        .withFiltersSource(new HttpFiltersSourceAdapter() {
                            public HttpFilters filterRequest(HttpRequest originalRequest, ChannelHandlerContext ctx) {
                                return new HttpFiltersAdapter(originalRequest) {
                                    @Override
                                    public HttpResponse requestPre(HttpObject httpObject) {
                                        return null;
                                    }

                                    @Override
                                    public HttpResponse requestPost(HttpObject httpObject) {
                                        return null;
                                    }

                                    @Override
                                    public HttpObject responsePre(HttpObject httpObject) {
                                        return httpObject;
                                    }

                                    @Override
                                    public HttpObject responsePost(HttpObject httpObject) {
                                        return httpObject;
                                    }
                                };
                            }
                        })
                        .start();

    }
}