HTTP客戶端的設(shè)計(jì)與實(shí)現(xiàn)

黔南民族師范學(xué)院計(jì)算機(jī)科學(xué)系

實(shí)驗(yàn)報(bào)告課程名稱計(jì)算機(jī)網(wǎng)絡(luò)課程設(shè)計(jì)班級(jí)08信息（1）班姓名王應(yīng)書(shū)學(xué)號(hào)2008081318實(shí)驗(yàn)日期2011.11實(shí)驗(yàn)地點(diǎn)行政樓機(jī)房任課教師張學(xué)義指導(dǎo)教師張學(xué)義實(shí)驗(yàn)課題HTTP客戶端的設(shè)計(jì)與實(shí)現(xiàn)實(shí)驗(yàn)成績(jī)實(shí)驗(yàn)?zāi)康?、HTTP客戶端程序的功能是給出個(gè)URL,要求程序能夠獲得指定URL所指向的內(nèi)容，對(duì)于獲得內(nèi)容不必做進(jìn)步的處理，只打印HTML代碼即可2、通過(guò)HTTP客戶端程序使學(xué)生找我網(wǎng)絡(luò)編程的基本知識(shí)和基本技能；3、是學(xué)生掌握HTTP協(xié)議的常用命令；4、通過(guò)跟蹤運(yùn)行java網(wǎng)絡(luò)包，使學(xué)生了解網(wǎng)絡(luò)編程實(shí)現(xiàn)的細(xì)節(jié)；實(shí)驗(yàn)要求1、分析HTTP客戶端程序的功能，要求能根據(jù)給定的URL，獲得URL指向的資源，對(duì)于資源的內(nèi)容可以不做任何的處理，直接打印即可；2、實(shí)現(xiàn)HTTP客戶端程序；3、跟蹤運(yùn)行java網(wǎng)絡(luò)包實(shí)驗(yàn)設(shè)備及軟件環(huán)境1、pc機(jī)臺(tái)2、jdk6?0、JCreater等實(shí)驗(yàn)方法及基本操作步驟基于URLConnection的實(shí)現(xiàn)，SimpieHTTPClient.java代碼如下：packagehttp;importjava.io.BufferedReader;importjava.io.InputStreamReader;importjava.io.PrintWriter;.InetAddress;.Socket;publicclassSimpleHttpClientUsingSocket{publicstaticvoidmain(String[]args){Stringhost=null;if(args.length>0){host=args[0];}else{host="";}try{Socketsocket=newSocket(host,80);BufferedReaderreader=newBufferedReader(newInputStreamReader(socket.getInputStream()));PrintWriterwriter=newPrintWriter(socket.getOutputStream(),true);writer.write("GET/HTTP/1.0\r\n");writer.flush();inti;while((i=reader.read())!=-1){System.ou亡.print((char)i);}}catch(Exceptione){System.ou亡.println("獲得"+host+"時(shí)出錯(cuò)！\n");e.printStackTrace();}}}基于客戶端套接字的實(shí)現(xiàn)，SimpieHTTPClientUsingSocket.java代碼如下：packagehttp;importjava.io.BufferedReader;importjava.io.InputStream;importjava.io.InputStreamReader;.MalformedURLException;.URL;.URLConnection;publicclassSimpleHTTPClient{Stringhost,code;publicStringgetHost(){returnhost;}publicvoidsetHost(Stringhost){this.host=host;}publicStringgetCode(){returncode;}publicvoidsetCode(Stringcode){this.code=code;}publicvoidreturnCode(){if(host.equals("")){host="";}try{URLurl=newURL("http://"+host);URLConnectionurlConn=url.openConnection();InputStreamis=urlConn.getInputStream();InputStreamReaderisr=newInputStreamReader(is);BufferedReaderbr=newBufferedReader(isr);StringBuildersb=newStringBuilder();while((code=br.readLine())!=null){sb.append(code+"\n");}code=sb.toString();}catch(MalformedURLExceptione){System.out.println(host+"的URL不合法！\n");e.printStackTrace();}catch(Exceptione){System.out.println("