-
UID:2537
-
- 注册时间2006-05-09
- 最后登录2020-05-29
- 在线时间3小时
-
- 发帖8
- 搜Ta的帖子
- 精华
0
- 铜板1641
- 人品值95
- 贡献值0
- 交易币0
- 好评度8
- 信誉值0
- 金币0
-
访问TA的空间加好友用道具
- 发帖
- 8
- 铜板
- 1641
- 人品值
- 95
- 贡献值
- 0
- 交易币
- 0
- 好评度
- 8
- 信誉值
- 0
- 金币
- 0
- 所在楼道
|
/* Q"KH!Bu%P **SiteFileFetch.java x\lua */ &"=inkh package NetFox; v+Hu=RZE import java.io.*; 6d,"GT import java.net.*; f?)qZPM
=^6]N~*,D /IgTmXxxj public class SiteFileFetch extends Thread { ~&g:7f|X Zscmc;G %"o4IYV# SiteInfoBean siteInfoBean = null; //文件信息Bean Mb-C DPT long[] nStartPos; //开始位置 tUzuel* long[] nEndPos; //结束位置 3N?uY2 FileSplitterFetch[] fileSplitterFetch; //子线程对象 #+XKfumLk long nFileLength; //文件长度 f"/NY6 boolean bFirst = true; //是否第一次取文件 I;=}@]9 boolean bStop = false; //停止标志 p0b&CrALx File tmpFile; //文件下载的临时信息
uu HWN| DataOutputStream output; //输出到文件的输出流 tP`,Egf"g >LLFe~9`g //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) h)sc-e public SiteFileFetch(SiteInfoBean bean) throws IOException G'! Hc6OZ { VXC_Y siteInfoBean = bean; *<J**FhcMu //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ?k/Uw'J4u/ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ?(F~9V if(tmpFile.exists ()) Ltc>@ { RP6QS )| bFirst = false; q0Fy$e]u read_nPos(); t1xX B^.M{ } Fm:Ri$iT else g8^ $, { qz?9:"~$C nStartPos = new long[bean.getNSplitter()]; k9a-\UIMet nEndPos = new long[bean.getNSplitter()]; $H?v } TJ#<wIiX L,n'G% p=p,sJ/@ th !Gc } Ta~Ei=d^ bjbm"~ 6ZX{K1_q public void run() d^4!=^HN { V;9.7v //获得文件长度 &6h,' U //分割文件 }6`#u:OZ //实例FileSplitterFetch `g3H;E //启动FileSplitterFetch线程 hX8;G!/ //等待子线程返回 yYF%U7N/n try{ I~EJctOG if(bFirst) "H6DiPh.E { .F |yxj;I7 nFileLength = getFileSize(); @N34 Q-l if(nFileLength == -1) ho 4~-xmN { )%P!<|s:5 System.err.println("File Length is not known!"); ZfoI7<?33 } &!_>J0 else if(nFileLength == -2) nD|Bo 9 { ?z p$Wz;k System.err.println("File is not access!"); (;\JCeGA } !Vy/-N else o[aRG7C { fE,\1LK4 for(int i=0;i<nStartPos.length;i++) ^k/@y@% {
dCN4aY[d nStartPos = (long)(i*(nFileLength/nStartPos.length)); K%)u zP } (zte 'F4 for(int i=0;i<nEndPos.length-1;i++) ] vQn*T"^ { kk&
([xqU nEndPos = nStartPos[i+1]; <$R'y6U: } \vsfY nEndPos[nEndPos.length-1] = nFileLength; "p0e6Z= } ?$%#y u#. } wm_xH_{F Dhv ^}m@ >E6w,Ab //启动子线程 /U+0T>(HS fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; PIl:z?q({ for(int i=0;i<nStartPos.length;i++) g=Rl4F] { ;X*I,g.+H fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), :.J Ad$>P siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), =HH}E/9z nStartPos,nEndPos,i); s: pmB\ Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); .liVlo@ fileSplitterFetch.start(); "`s{fy~mV } e+Vn@-L; // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), PVLLuv siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); c7Jfo
x
V // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", V 9bn nEndPos = " + nFileLength); _ 5nLrn,~ // fileSplitterFetch[nPos.length-1].start(); v*U OD'tk rUmaKh?v|X !E#FzY!}Pl //等待子线程结束 imC>T!-7 //int count = 0; I82GZL //是否结束while循环 ~x4]^XS boolean breakWhile = false; M8(N9)N [`2V!rU hR(\ %p while(!bStop) =*>ri { )G
a5c write_nPos(); gwO]U=Y Utility.sleep(500); +~Wg@ breakWhile = true; clyZD`* _<}oBh ;auT!a~a# for(int i=0;i<nStartPos.length;i++) fAYp\k { wkc)2z if(!fileSplitterFetch.bDownOver) }xJ ).D {
)&Af[mS breakWhile = false; =jz [}5 break; )jm!bR` } yGj'0c:: } b
v5BV if(breakWhile) @|N{EI break; 2Kwr=t WstX>+?' 3:qn\"Hj //count++; 29z$z$l4 //if(count>4) E &G]R! // siteStop(); <aSjK# } 1K\zamBg ;XagLy M5c$ System.err.println("文件下载结束!"); 4fSGc8 } o@2Y98~Q} catch(Exception e){e.printStackTrace ();} \8Y62 } &uP,w# eU(cn8/} zpgRK4p,I" //获得文件长度 xaI)d/ public long getFileSize() .:r
l<. { [$]qJ~kz int nFileLength = -1; Yc^;?n`x try{ 6
9+Pf* URL url = new URL(siteInfoBean.getSSiteURL()); Xnc?oT+ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); erlg\-H httpConnection.setRequestProperty("User-Agent","NetFox"); YUjKOPN yd|ao\'= ;r?s7b/> int responseCode=httpConnection.getResponseCode(); wNvq['P if(responseCode>=400) D4Z7j\3a { 1EiSxf processErrorCode(responseCode); ({$>o] <h return -2; //-2 represent access is error 9w!PA-) L } ~`yO@f;D T0|hp7WM gkhmQd String sHeader; ,76Q*p ?uh%WN6nU] =[do([A for(int i=1;;i++) adY ,Nz { %_(X n //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); {&TP&_|H //Utility.log(in.readLine()); 9s4>hw@u sHeader=httpConnection.getHeaderFieldKey(i); br;~}GR_h if(sHeader!=null) .C|dGE?, { yU|=)p5 if(sHeader.equals("Content-Length")) fL(_V/p^ { Q3<ctd\]Y nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); >zX`qv&> break; dt5`UBvUg } &0x;60b } VV-%AS6; else Qa#Em1co break; |BEoF[1 } ] kdU]}z } ?Gx-q+H catch(IOException e){e.printStackTrace ();} U+G8Hs/y catch(Exception e){e.printStackTrace ();} ovk^ W4#E&8g% ^V0I!&7lx Utility.log(nFileLength); P" aw--f( ^6@6BYf) ;iA$yw: return nFileLength; n#PXMD* } K |^OnM p'4ZcCW?f T
s9go //保存下载信息(文件指针位置) ZFC&&[%-sG private void write_nPos() @rE+H
5 { @yNCWa~N try{ ~Dbu;cqR@ output = new DataOutputStream(new FileOutputStream(tmpFile)); RPw1i* output.writeInt(nStartPos.length); a|-B# S for(int i=0;i<nStartPos.length;i++) m$`4.>J { ffy,ds_7 // output.writeLong(nPos); t=IM"ZgfL output.writeLong(fileSplitterFetch.nStartPos); 0ZJrK\K; output.writeLong(fileSplitterFetch.nEndPos); th|'t}bWV } &[t} /+) output.close(); )1/J5DI @8 } _};T:GOT catch(IOException e){e.printStackTrace ();} jwp?eL!7 catch(Exception e){e.printStackTrace ();} Bq~?!~\?. } CqLAtS X7 awgS5We| vhrURY. //读取保存的下载信息(文件指针位置) =>*9"k%m private void read_nPos() LG
vPy { *5mJA -[B+ try{ T5eJIc3a" DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); H,(4a2zx int nCount = input.readInt(); LHMA-0$ ?) nStartPos = new long[nCount]; Mk/ZEy q^ nEndPos = new long[nCount]; :M$8<03>F for(int i=0;i<nStartPos.length;i++) Q"k #eEA { _|>bOI nStartPos = input.readLong(); i\zN1T_ nEndPos = input.readLong(); MZt&HbD- } Na.)!h_Kn' input.close(); b
v4 } :+<GJj_d+ catch(IOException e){e.printStackTrace ();} Ai~d catch(Exception e){e.printStackTrace ();} i9^m;Y)^I } a/Cc.s F~l:WQAj 5XZ\7Z| private void processErrorCode(int nErrorCode) \tfhF#' { 6C- !^8[f System.err.println("Error Code : " + nErrorCode); T#3`&[ } /mQ9}E4X s;,ulME PG*FIRDb //停止文件下载 9u1Fk'cxG, public void siteStop() Wdp4'rB { ]4[^S.T= bStop = true; #{~3bgY for(int i=0;i<nStartPos.length;i++) gcF V$ fileSplitterFetch.splitterStop(); ;m}o$` Lu[xoQ~I l j %k/u } ?m h0^G } M5{vYk>,1Q //负责部分文件的抓取 +IM6 GeH **FileSplitterFetch.java XBos^Q */ iI@(Bl] package NetFox; TnLblkX J1d|L|M &Ui&2EW import java.io.*; &P(vm@* import java.net.*; 9=G
dj!L {\5-b:#_ Ip*[H#h public class FileSplitterFetch extends Thread { k(wJ6pc Dl_SEf6b 2KSt4oa String sURL; //File URL wi S8S{K5 long nStartPos; //File Snippet Start Position [KsVI.gn long nEndPos; //File Snippet End Position J:2Su1"ODh int nThreadID; //Thread's ID nEh^{6 boolean bDownOver = false; //Downing is over hJGWa%` boolean bStop = false; //Stop identical Iq(;?_ FileAccessI fileAccessI = null; //File Access interface o[>p y0
qq7Dmu y5:al7*P public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException MJ~)CiKgN { dMoN19F this.sURL = sURL; *Bx'g|
u this.nStartPos = nStart; o88Dz}a this.nEndPos = nEnd; YL@d+
-\ nThreadID = id; \?NT,t=3J fileAccessI = new FileAccessI(sName,nStartPos);//定位 ?]2OT5@&s } mG+hLRTXP l&m'?.gf `*Jw[Bnh8 public void run() WyJXT. { Ge4tc while(nStartPos < nEndPos && !bStop)
+( V+XT { R,ddH[3
q
pFzK
g<PdiVp+ try{ Z.mnD+{ URL url = new URL(sURL); fa;GM7<e) HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); <>K@#|%Y& httpConnection.setRequestProperty("User-Agent","NetFox"); gfAVxMg String sProperty = "bytes="+nStartPos+"-"; TkV$h(#!f& httpConnection.setRequestProperty("RANGE",sProperty); g bwg3$!9 Utility.log(sProperty); !Mk:rO-L 2`w\<h
aoS]Qp InputStream input = httpConnection.getInputStream(); o)IcAqN$H //logResponseHead(httpConnection); vh6#Bc)i%w pI{s
)|" e,Fe,5E&g byte[] b = new byte[1024]; 9{5 c}bX int nRead; /pDI
\] while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) dM3V2TT { 0B[eG49 nStartPos += fileAccessI.write(b,0,nRead); sTGe=}T8 //if(nThreadID == 1) /yj-^u\R // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); .
G ~,h } 7<c&)No; S~4HFNe^& QprzlxB Utility.log("Thread " + nThreadID + " is over!"); <jRs/?1R bDownOver = true; G q
r(. //nPos = fileAccessI.write (b,0,nRead); ]qk/V:H: } G.c@4Wz+ catch(Exception e){e.printStackTrace ();} ?4}EhXR( } r.;(Kx/M } =m=utd8 Gg9NG`e6I 7<VfE`Q3 //打印回应的头信息 =.Q|gZ
public void logResponseHead(HttpURLConnection con) zwKm;;v8 { "RJf2~(ZX for(int i=1;;i++) ))>)qav { ZW|VAn'> String header=con.getHeaderFieldKey(i); ^#L?HIM if(header!=null) |d1%N'Ll //responseHeaders.put(header,httpConnection.getHeaderField(header)); R!.HS0i. Utility.log(header+" : "+con.getHeaderField(header)); c~UYs\ else _;+N=/l0 break; U-EX)S^T[{ } 0IEFCDeCO } ^R4eW|H k6 f;A |79!exVMBp public void splitterStop() nNff~u)I { W[3)B(Vq<E bStop = true; `N"fsE ma } tEl4 !vA lYu1m ;DKwv} } 'yM )>]u" mckrR$> "@I"0OA /* cuP5cL/Y **FileAccess.java S:"t]gbF = *//文件访问(定位,写) N{G+|WmQ package NetFox; UI:{*N**Z import java.io.*; eMvb*X6 Z qg(\ $|YIr7?R public class FileAccessI implements Serializable{ c#e_Fs Q( KLx ) //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节
0fPqO2 RandomAccessFile oSavedFile; %?EOD=e= long nPos; *<! W k\ =`X@+~%- =#<hT
s public FileAccessI() throws IOException c])b?dJ* { 5Ffz^;i this("",0); %zyMWC } soZw""|v 1a90S*M V|.aud=7z public FileAccessI(String sName,long nPos) throws IOException >M^
1m( { 0n,5"B oSavedFile = new RandomAccessFile(sName,"rw"); Sh]x`3 ). this.nPos = nPos; ~&~%q u oSavedFile.seek(nPos); z[S,hD\w } S~F:%@,* iEki<e/ h& (@gU`A public synchronized int write(byte[] b,int nStart,int nLen) ]T(O;y*m { "=<lPi int n = -1; UUY-EC7X try{ k&DHQvfB oSavedFile.write(b,nStart,nLen); bYdC.AE n = nLen; "ngYh]Git$ } KW&&AuPb} catch(IOException e) r[Q$w> { n a2"Sy=Yi e.printStackTrace (); &bj :,$@ } =tH+e7it &U xN.vl [NvEXTd return n; RQ{w`>K } S/d})8~. Xt=& i&>,aiH@ } gH\r# wy| '{cN~A2b4 dtM@iDljj /* #G.3a]p}" **SiteInfoBean.java 2a=WT`xf? */ %T6#c7U_ package NetFox; ''BP4=r5n >W'SG3Hmc +ZE&]BO{ public class SiteInfoBean { d0 V>;Q :/%Vpdd@ ^MJGY,r6b private String sSiteURL; //Site's URL h;4g#|, private String sFilePath; //Saved File's Path |7`Vw Z private String sFileName; //Saved File's Name
Uzb"$Ue4 private int nSplitter; //Count of Splited Downloading File M:`hb$k: Sc6wC H X=\#n-* public SiteInfoBean() C3@.75-E {//nSplitter的缺省值为5 F` I-G~e //default value of nSplitter is 5 sjTsaM;< this("","","",5); $xu?zd" } ;wQWt_OtuJ % C
3jxt :GK{JP public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) j5'Jp} { fr#lH3 sSiteURL= sURL; `8dE8:#Y sFilePath = sPath; Xp} vJl sFileName = sName; ~#a1]w this.nSplitter = nSpiltter; @IiT8B HnP;1Gi RaU.yCYyu } dWqFP 4(aesZ8h 7-o=E= public String getSSiteURL() iQ9#gPk_9 { U[A*A^$c} return sSiteURL; Ab2g),;c } gv[7h'}< l(]\[}.5 5&X public void setSSiteURL(String value) Ve8! { [QZ~~(R sSiteURL = value; z t,-O7I'1 } n~&R_"mv( k9Sqp:l, +rT( public String getSFilePath() }qD.Ek { _yWH\5@ return sFilePath; Y$ChMf } W;N/Y3Lb Q?a"uei[ s3+O=5 public void setSFilePath(String value) Eq8OAuN { <;6]) sFilePath = value; 40#KcbMa| } 7
YK+TGmU^ Nu_w@T\l GwW#Ww;Oc public String getSFileName() kQ#eWk J, { *c AoE l return sFileName; `>sqP aD } DYWC]* 4iLU "~ ]JD$fS=_ public void setSFileName(String value) R&4E7wrdP { ]~qN<x sFileName = value; 6gKOpa } m_(hCY=Q$ i52R,hz 1!f'nS public int getNSplitter() s^oNQ} { \9}5}X_x. return nSplitter; @qC:% |> } c"YK+2 s{k\1P(G} 20moX7L public void setNSplitter(int nCount) xF/D YXC{8 { .HQ<6k:
nSplitter = nCount; 'QS"4EvdD } ltrSTH,kL } eurudl 2T3DV])Q MJG%HakK0 /* 5i^vN"J **Utility.java tbPPI)lu */ p&4n3%(R@ package NetFox; >o} ati s =5H.q%PV yhdG 93 public class Utility { bvgD;:Aj O2,g]t~C W<LaR,7 public Utility() >ek%P;2w> { od}x7RI%m 2wBU@T1 w+37'vQ } yo.SPd="Vx ,>UmKrYo //线程睡眠 {T.Vu]L80 public static void sleep(int nSecond) ->hxHr`!%a { m6x. "jG try{ Yy)a,clZ*$ Thread.sleep(nSecond);
`_'Dj> } 3kQ ^f=Wd catch(Exception e) ^d9raYE`' { gk z#kiGF e.printStackTrace (); LgNNtZ&F } 4:@|q:DR } B<XPu=| 3b3cNYP //日志 E)hinH public static void log(String sMsg) +=h!?<*C8 { >Y'yM4e* System.err.println(sMsg); jp^WsHI3 } FqsjuU@l J3x7i8 na3kHx@ public static void log(int sMsg) @L!#i*> 9 { W[>Tq T63 System.err.println(sMsg); |I}+!DDuv } SU'1#$69F } YhT1P fl nh=Us^xD arLl8G[ /* (<C%5xk **TestMethod.java 6h_ k`z */ 'Xl>,\'6 package NetFox; 0:Y`#0qK <u?hdwW\ \.1b\\ public class TestMethod { Gr@{p"./z c2\vG )Zf}V0!?+ public TestMethod() N#)VD\m { ///xx/weblogic60b2_win.exe _Af4ct;ng try{ :3>yr5a7- SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); L[G\+ //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 5SL>q`t.bd SiteFileFetch fileFetch = new SiteFileFetch(bean); pInWKj[y1 fileFetch.start(); ePRM v } {}o>nenx\ catch(Exception e){e.printStackTrace ();} ')<FLCFwT U9o*6`"o }PIB b } r)5\3j[P TcLaWf!c5 H8BO*8} public static void main(String[] args) 7oe@bS/Z { M y"!j,Up new TestMethod(); .(1j!B4^ } 0^&R7Rv c } xnQGCw?S&} 点击下载更多相关资料
|