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/* )(h<vo)-zX **SiteFileFetch.java +a|u,'u */ asL!@YE package NetFox; >a)6GZ@ import java.io.*; F>U*Wy import java.net.*; 0IxHB|^$ l'RuzBQr SD .c9 public class SiteFileFetch extends Thread { K_}81|= ^:2>I $ &`}ACTY'P SiteInfoBean siteInfoBean = null; //文件信息Bean /rnP/X)T long[] nStartPos; //开始位置 Q5c13g2(c long[] nEndPos; //结束位置 X=[`+= FileSplitterFetch[] fileSplitterFetch; //子线程对象 k8w:8*y'. long nFileLength; //文件长度 4`p[t;q boolean bFirst = true; //是否第一次取文件 {PkPKp boolean bStop = false; //停止标志 ]//Dd/L6 File tmpFile; //文件下载的临时信息 oRHWb_$" DataOutputStream output; //输出到文件的输出流 [(iJj3s! U(\ ^!S1 //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 7!q.MOYm public SiteFileFetch(SiteInfoBean bean) throws IOException ka<rlh<h { }qN siteInfoBean = bean; vqRW^>~-B //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); e$4l[&kH_ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); g.x]x#BC if(tmpFile.exists ()) eXCH*vZY { bdyIt)tK+ bFirst = false; K~14; read_nPos(); V3[>^ZCA } x<>In"QV else q&@q/9kz { e[%g'}D:- nStartPos = new long[bean.getNSplitter()]; Ew2ksZ>B]& nEndPos = new long[bean.getNSplitter()]; J72YZrc } _j?/O)M
c }>?"bcJ fHacVjJ 4Dv42fO } p}
i5z_tS a WMEo`O% 9 [wR/8Xm public void run() A{ Ejk| { \"Aw
ATQ //获得文件长度 jHpFl4VPz //分割文件 *h2)$^P% //实例FileSplitterFetch #6za
//启动FileSplitterFetch线程 (\ Gs7 //等待子线程返回 ^vr`t9EE try{ -MItZ if(bFirst) N}7tjk { 22"/|S nFileLength = getFileSize(); YojYb]y+j if(nFileLength == -1) S@vLh=65 { Ng1uJa[k!d System.err.println("File Length is not known!"); XkuZ2( } yWZ%|K~$ else if(nFileLength == -2) >@StKj { X]v.Yk=wu System.err.println("File is not access!"); k?ksv+e\ } MUqV$#4@I else @(s"5i.`) { P[a\Q`}L for(int i=0;i<nStartPos.length;i++) {9YNv<3 { C]D voJmBs nStartPos = (long)(i*(nFileLength/nStartPos.length)); @G0j/@v } uNG?`>4> for(int i=0;i<nEndPos.length-1;i++) \&5t@sC { CDgu`jj%] nEndPos = nStartPos[i+1]; %)G]rta# } MYF6tZ* nEndPos[nEndPos.length-1] = nFileLength; 9UeK}Rl^n } |\S p IFH1 } b+ J) Vq1ve;(8s kc-v(WIC //启动子线程 1U;p+k5c fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; pm}!?TL for(int i=0;i<nStartPos.length;i++) ,MdK "Qa> { ET}Dh3A fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Irnfr\l. siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), i-_ * 5%A nStartPos,nEndPos,i); ,1&</R_ Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); d}RR!i`<N fileSplitterFetch.start(); 4]3(Vyh` } 0s8w)%4$ // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), J,j! siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); l-RwCw4f // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", "1Oe
bo2 nEndPos = " + nFileLength); #jNN?,ZK // fileSplitterFetch[nPos.length-1].start(); 3erGTa[|q &ZUV=q%g9n &
!I$ //等待子线程结束 o$-!E(p //int count = 0; ds" q1 //是否结束while循环 sZ9VXnz24 boolean breakWhile = false; V_Oj?MMpn >g FEA0- =g+Rk+ jn while(!bStop) "iY=1F"\R { .#ASo!O5q write_nPos(); hIv8A_>@` Utility.sleep(500); 1O,<JrE+- breakWhile = true; V,qc[*_3 k(.6K[b dCkk5&2n for(int i=0;i<nStartPos.length;i++) D!d1%hac { 2[qlEtvQ if(!fileSplitterFetch.bDownOver) Xv'5%o^i* { *eonXJYD
breakWhile = false; - r!sY+Z> break; 8Cw+<A* } U%nLo[k } }{.0mu9 if(breakWhile) oyeJ"E2 break; 4]18=?r> EFNi# D8s I?_YL* //count++; f Nnemn@> //if(count>4) @XL5$k[Y // siteStop(); d`+@
_)ea } O^,%V{]6\ M$0-!$RY $06[D91' System.err.println("文件下载结束!"); %}=:gF } QFtf.")[.
catch(Exception e){e.printStackTrace ();} <4|/AF*> } mWPA]g( l@OY8z-_ - .EH?{i //获得文件长度 <yHa[c`L public long getFileSize() 3/i_?G { )IH|S5mG? int nFileLength = -1; `oq][| try{ b,Vg3BS URL url = new URL(siteInfoBean.getSSiteURL()); }[gk9uM_7 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); H${5pY_M httpConnection.setRequestProperty("User-Agent","NetFox"); Ghb Jty` Z>si%Npm\ O<o>/HH$ int responseCode=httpConnection.getResponseCode(); %2jRJ if(responseCode>=400) M)JKe!0ad1 { ,s9gGCA processErrorCode(responseCode); :|tWKA return -2; //-2 represent access is error yHk}'YP } @jxAU7! hvO WQ1~9# String sHeader; muJR~4 t/57LjV }pMd/|A, for(int i=1;;i++) [,)G\ { V|n}v?f_q //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); |r%NMw #y //Utility.log(in.readLine()); t0*,%ge:< sHeader=httpConnection.getHeaderFieldKey(i); Oe["4C if(sHeader!=null) +-*Ww5Zti { Jb (CH4|7 if(sHeader.equals("Content-Length")) >{HQ"{Q { PV\aQO.mo nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); UTLuzm break; 5u89?-UD } #NZ#G~oeO } ^.|P&f~ else p?v. 42R:z break; _P{f+HxU } 'fIoN% } f~0CpB*X catch(IOException e){e.printStackTrace ();} s9)U", catch(Exception e){e.printStackTrace ();} O DO'!T- ;LXwW(_6d p-Jp/*R5 Utility.log(nFileLength); lIUaGz| 2]}4)_&d<e P\lEfsuR return nFileLength; T{:~v+I= } S[ln||{ 1XpG7 'OTQiI^t= //保存下载信息(文件指针位置) *
",/7( private void write_nPos() HPz3"3n! { :yi?< try{ Id}/(Pkq output = new DataOutputStream(new FileOutputStream(tmpFile)); {gkzo3 output.writeInt(nStartPos.length); bQlv b for(int i=0;i<nStartPos.length;i++) g]Jt (aYK { /L yoTBG // output.writeLong(nPos); BtA_1RO output.writeLong(fileSplitterFetch.nStartPos); 3HEm-pok output.writeLong(fileSplitterFetch.nEndPos); )p^" J| } h%%ryQQ&< output.close(); J6[V7R[\ } pv[Gg^ catch(IOException e){e.printStackTrace ();} !Soz??~o/ catch(Exception e){e.printStackTrace ();} Q_r}cL/A } JJZu%9~[ >2t.7UhDI 77b^d9! ~ //读取保存的下载信息(文件指针位置) j"F?^0aR,Q private void read_nPos() _@5|r|P> { vk0b b3){D try{ 'w z6Zt DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 1]A$ int nCount = input.readInt(); !*1$j7`tP nStartPos = new long[nCount]; .C*mDi)wZ nEndPos = new long[nCount]; %;eD.If} for(int i=0;i<nStartPos.length;i++) -^aJ}[uaI { [o"<DP6w nStartPos = input.readLong(); ?:$\
t?e^ nEndPos = input.readLong(); D
0 O^=v| } Fd86P.Df input.close(); ]?6Pt:N2 } cE;n>ta"F catch(IOException e){e.printStackTrace ();} bQ3txuha catch(Exception e){e.printStackTrace ();} (yb$h0HN } kz\Ss|jl \47djmG- y '[VZ$^i private void processErrorCode(int nErrorCode) Gl"|t't( { xwF mY'o System.err.println("Error Code : " + nErrorCode); 3Cw}y55_y } %vil~NU @9tzk [ <I#nwoHN //停止文件下载 sg8[TFX@Z public void siteStop() hm*cGYV/ { b}
0G~oLP bStop = true; ZuFcJ?8i for(int i=0;i<nStartPos.length;i++) Vak\N)=u fileSplitterFetch.splitterStop(); ?Kt F!:_C
=(]Z%Q-V Kr5(fU } AP:Q]A6} } (^NYC$ZxM= //负责部分文件的抓取 SK*z4p **FileSplitterFetch.java Fq$r>tmV */ GEK7q< package NetFox; rJ)j./c W#P`Y < u$ Zz1nXUZ import java.io.*; vSu
dT import java.net.*; u4h0s1iI ^)y8X.iO E<l/o5<nC public class FileSplitterFetch extends Thread { *4ido? RH.qbPjx "<"m}rE?Q String sURL; //File URL e }Mf long nStartPos; //File Snippet Start Position g<N;31:c\ long nEndPos; //File Snippet End Position ^)(-7H int nThreadID; //Thread's ID |h?2~D!+d
boolean bDownOver = false; //Downing is over +CM>]Ze boolean bStop = false; //Stop identical Fw S>V2R FileAccessI fileAccessI = null; //File Access interface \xlG 3nz Mg~4) DW] yQ)&u+r public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException A;<wv>T { gYCr,-_i this.sURL = sURL; ?<`oKBn this.nStartPos = nStart; z2>LjM)
# this.nEndPos = nEnd; [l3ys nThreadID = id; 57~y 7/ 0 fileAccessI = new FileAccessI(sName,nStartPos);//定位 Ptc+ypTu } D4b-Y[/" VV{>Kq+&,v RA!q)/+ public void run() /5<= m: { P6&%`$ while(nStartPos < nEndPos && !bStop) egvb#:zW? { ua)jGif
m"T}em# ftG3!} try{ o]Xt2E URL url = new URL(sURL); 41x"Q?.bY HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); a'-u(Bw httpConnection.setRequestProperty("User-Agent","NetFox"); d:kn%L6k_ String sProperty = "bytes="+nStartPos+"-"; ae2Q^yLA httpConnection.setRequestProperty("RANGE",sProperty); lYTQg~aPm Utility.log(sProperty); X$;&Mdo. [~u!*W *s,[Uy![ InputStream input = httpConnection.getInputStream(); lLp,sNAj //logResponseHead(httpConnection); :r@t ' (6.uNLr ^?$,sS
;Q byte[] b = new byte[1024]; _1NK9dp: int nRead; {l)$9! while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) EJ>&\Iq { fZezDm(Q nStartPos += fileAccessI.write(b,0,nRead); +J|H~` //if(nThreadID == 1) pB4Uc<e // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); @)BO`;*$fF } r\d(*q3B 43pe6 ^. zs~Tu Utility.log("Thread " + nThreadID + " is over!"); lH;V9D^ bDownOver = true;
}DXG;L //nPos = fileAccessI.write (b,0,nRead); =gs-#\% } 'f!U[Qatg catch(Exception e){e.printStackTrace ();} NJ)Dw`|%|) } ~ney~Pz_ } x ZP*%yM +Q[uq!<VJk L;*
s-j6y //打印回应的头信息 #R{>@]x` public void logResponseHead(HttpURLConnection con) 3*&
Y'/! { 0:`|T jf_ for(int i=1;;i++) KW(a@X { ~N/r;omVc String header=con.getHeaderFieldKey(i); mUbm3JIjJ if(header!=null) 4;I\%qes //responseHeaders.put(header,httpConnection.getHeaderField(header)); |DV?5>> Utility.log(header+" : "+con.getHeaderField(header));
0_eqO'" else mwo:+^v( break; !(rAI } #n'.a1R }
v&|65[< `Bw]PO "bIb?e2h9G public void splitterStop() X+C*+k,z { ~%8P0AP bStop = true; SfnQW}RGI } "~5cz0
H3v N^dQX,j 54CJ6"q } R7/S SuG6\ Xva(R<W7d< bAPMD /* G;3%k.{ **FileAccess.java ?id)
2V0s *//文件访问(定位,写) VD$5 Djq package NetFox; 1>OlBp import java.io.*; Ln4]uqMG. Z^:_,aJ? J(l\VvK public class FileAccessI implements Serializable{ PqV
F} 8u2k-_9 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 BS*79heY RandomAccessFile oSavedFile; $
]s^M=8 long nPos; N<9 c/V y)fMVD"( 7a1o#O public FileAccessI() throws IOException lN#j%0MaUo { 1EXT^2!D this("",0); F(yR\)!C } 68XJ`/d c|k_[8L 2n,z`(= public FileAccessI(String sName,long nPos) throws IOException k1<^Ept { `Pvi+:6\Y oSavedFile = new RandomAccessFile(sName,"rw"); 8f9wUPr this.nPos = nPos; Hw o _;fV oSavedFile.seek(nPos); LUbj^iQ9 } DjM*U52Yfj TP
rq:"K NX&dJ
6a public synchronized int write(byte[] b,int nStart,int nLen) He(65ciT<O { Jy)=TJ!y int n = -1; Nvgi&iBh8 try{ i%-yR DIX oSavedFile.write(b,nStart,nLen); Q>, &@ n = nLen; z2iMpZ } (oGYnN,2 catch(IOException e) xoKK{&J { Byc;r-Q5V e.printStackTrace (); J'}+0mln } m$p}cok#+S rLsY_7! 5vyg-' return n; A|\A|8=b } ,`}yJ*7 pUHgjwT'U "E\vdhk } ,VS\ mG/}s %JM$] zMv`<m% /* /oT~CB.. **SiteInfoBean.java ZAr6RRv ^ */ \>6*U r package NetFox; ,)1C"' SE+hB {Dpsr` & public class SiteInfoBean { ',r` )9o .dU91> ~Ov kG/1 private String sSiteURL; //Site's URL <D.E.^Y private String sFilePath; //Saved File's Path !-lI<$S: private String sFileName; //Saved File's Name N;3!oo4 private int nSplitter; //Count of Splited Downloading File sfX~X/ juR>4SH uppa`addK public SiteInfoBean() :qdyCsn2 {//nSplitter的缺省值为5 VW*%q0i- //default value of nSplitter is 5 CtCReH03 this("","","",5); nnyT,e% } C~h#pAh Qn$'bK2V \6wltTW]# public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) @rYZ0`E9 { 1Vy8eI`4 sSiteURL= sURL; LO_Xrj sFilePath = sPath; uVqc:Q" sFileName = sName; KNeVSZT this.nSplitter = nSpiltter; h>`[p,o H1k)ya x4_ -s0SQe{!_ } zIF1A*UH %@PcQJg U< N/o?\q8 public String getSSiteURL() dHY@V>D'- { PA^*|^;Xh return sSiteURL; >
SZ95@Oh } ;5/Se"Nd nGVr\u9z 7KlL%\ public void setSSiteURL(String value) 8'Q+%{?1t {
nOPB*{r| sSiteURL = value; =78y*`L } .4a|^ vT jA,y.(mR Z?eTjkNS# public String getSFilePath() NOTG|\{ { -U2Su|:\N8 return sFilePath; K}cZK } &>c=/]Lop 7**zb"#y j0L%jz public void setSFilePath(String value) (')t>B1Z { ;j T{<
Y sFilePath = value; 12
) } (Iv@SiZf( ~aotV1"D #X)DFAtb public String getSFileName() RhJ 3>DL { ,O:4[M !$w return sFileName; ()|e
xWW } aUMiRm- cUug}/!I 1Lf - public void setSFileName(String value) iYLg[J" { c\.)vH sFileName = value; F7} yt } 7oE:] j/Kul}Ml\* #sU>L= public int getNSplitter() w?D= { A@3'I ; return nSplitter; 'cCM[P+ } ar@,SKU'K ~[!Tpq5 MTwzL<@$ public void setNSplitter(int nCount) b|87=1^m[ { 9+(b7L nSplitter = nCount; %{ U (y# } @^0}w k } !v3d:n\W8 |$tF{\ \/dOv[ /* p_xJKQS **Utility.java %5L~&W}^" */ l%V+]skS package NetFox; ."Pn[$'. Ks3YrKk;p ;-i)}< public class Utility { tG]W!\C'h [Qr_0O un\o&0} public Utility() ^d>m`*px { [ !~8TF .&u
@-Vm ^Cp;#|g, } <DqFfrpc c@lF*"4 //线程睡眠 &xr (Kb public static void sleep(int nSecond) C| { cm!vuoB~~ try{ hXH+C-%{ Thread.sleep(nSecond); * k\;G? } L]YJ#5 catch(Exception e) E\2f"s { e<DcuF<ZS e.printStackTrace (); ybf,pDY#f } pvWNiW:~k } PY CG#U <}^p5| //日志 W^W.* ?e` public static void log(String sMsg) D!,'}G# { P/S ,dhs( System.err.println(sMsg); de8xl } shLMj)7! <'T DOYb JrxQ.,*i public static void log(int sMsg) :MYLap&L& {
zW ?=^bE System.err.println(sMsg); ~- aUw}U } }w=|"a|, } a'q&[08 {h|kx/4{m CT\rx>[J.6 /* RSeav **TestMethod.java n1x3q/~ */ Vf(..8 package NetFox; AO-~dV aEEb1Y '0Q/oU public class TestMethod { sCf)#6mI ow+_g R- <UIE-# public TestMethod() >y!R}`&0^t { ///xx/weblogic60b2_win.exe 'K23oQwDB try{ k/Urz*O SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); FrRUAoFO //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); A(XX2f!i SiteFileFetch fileFetch = new SiteFileFetch(bean); }Oe4wEYN) fileFetch.start(); -g"Wi@Qr } >N0L catch(Exception e){e.printStackTrace ();} cI6Td*vM Bi/E{k, tHvP0RxM } )*}?EI4. @]]\r.DG V2yX;u public static void main(String[] args) G[d]t$f= { T7Y+ WfYh new TestMethod(); $|@-u0sv } V\c`O } IUG}Q7w5 点击下载更多相关资料
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