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/* V $z}
K **SiteFileFetch.java p!k7C&]E */ /Q~gU< package NetFox; 7jnIv];i import java.io.*; =+t^ f import java.net.*; btdb%Q* Z|%_oR~b| ^Y-]*8;] public class SiteFileFetch extends Thread { "\0v,!@ ynA|}X gTA%uRBa SiteInfoBean siteInfoBean = null; //文件信息Bean %Y!Yvw^&P( long[] nStartPos; //开始位置 [<'-yQ{l\ long[] nEndPos; //结束位置 dCj,b$ FileSplitterFetch[] fileSplitterFetch; //子线程对象 uV 7BK+[O long nFileLength; //文件长度 }$bF
5& boolean bFirst = true; //是否第一次取文件 A:7k+4 boolean bStop = false; //停止标志 ooUk O File tmpFile; //文件下载的临时信息 :1Q!$ m DataOutputStream output; //输出到文件的输出流 0ez(A ~I{n^Q/a //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) h6} lpd public SiteFileFetch(SiteInfoBean bean) throws IOException Nbp!teH6 { eds26( siteInfoBean = bean; 5Hcf;P7 //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ]O]GeAGC2 tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); irN6g#B?
if(tmpFile.exists ()) cI=(\pC { ~#kT_*sw) bFirst = false; {dmj/6Lc read_nPos(); JwJ7=P=c } V*W;OiE_3 else W3iZ|[E; { 9)`wd&! nStartPos = new long[bean.getNSplitter()]; 0
$r{h}[^c nEndPos = new long[bean.getNSplitter()]; C$5x*`y } fzcT(y
)eV]M~K: `,z{7 0 .FyC4"b=c } N[%IrN3 Yp$lc^)c> Tbw8#[6AX public void run() y+_U6rv[ { "=)`*"rr //获得文件长度 F$v
G=3 //分割文件 w67Pw
//实例FileSplitterFetch A.Njn(z?Lz //启动FileSplitterFetch线程 *^]ba> //等待子线程返回 60m1
>" try{ f
sMF46 if(bFirst) "lm3o(Dk { fQ@["b nFileLength = getFileSize(); ftbu:RtK^^ if(nFileLength == -1) J5-^@JYK { <_}u5E)7( System.err.println("File Length is not known!"); '?nhpT^ }
eL*Edl|# else if(nFileLength == -2) [Fe5a { xE:p)B-] System.err.println("File is not access!"); 6N^FJCs } W/+0gh7`,( else _F$?Z { U -(d~]$ for(int i=0;i<nStartPos.length;i++) t_3XqjuA { "{}5uth nStartPos = (long)(i*(nFileLength/nStartPos.length)); F C"dQ } )Fbkt(1 for(int i=0;i<nEndPos.length-1;i++) N9hBGa$ { /Bc
;)~ nEndPos = nStartPos[i+1]; h
c"n? } #u>JCPz nEndPos[nEndPos.length-1] = nFileLength; JA&w"2X*E } Tg[+K+ b } ~<aCn-h0 $?7}4u, U_+>4zdm //启动子线程 L(iWFy1& T fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; nI-\HAX for(int i=0;i<nStartPos.length;i++) r__uPyIMG/ { {min9 fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), (URWicaB siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), |<OZa;c+ nStartPos,nEndPos,i); Rh%x5RFFc Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); s iC/k* fileSplitterFetch.start(); X\_ku?]v } ZT!DTb
B // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 1^vN?#Kt siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); d+l@hgz~ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", i-$]Tg nEndPos = " + nFileLength); 7JjTm^bu // fileSplitterFetch[nPos.length-1].start(); V5m4dQ>t 4Xlq
Ym ~ u jY+{ //等待子线程结束 v]BN. SHE_ //int count = 0; 8|gwH2st~ //是否结束while循环 zbrDDkZ1 boolean breakWhile = false; Go8 m PXWBc\ N|wI=To while(!bStop) oQAD
3a { .z+[3Oj_E write_nPos(); "4C b dD// Utility.sleep(500); h",kA(+P breakWhile = true; re:=fC:t5A }Til $TT%H +9M#-:qB for(int i=0;i<nStartPos.length;i++) _3.=| @L { _O{3bIay3! if(!fileSplitterFetch.bDownOver) JHBX'1GQa { g,*L P breakWhile = false; N2WQrTA:S+ break; #fd;] } pKMy:j } r Z%l?( if(breakWhile) O8qA2@, break; yP.,Dh s @p~f*b4H? k"7l\;N //count++; Y
{a#2(xn //if(count>4) 'GcN9D // siteStop(); (Rj'd>%c } ~qekM>z Pv@Lx+k sF[7pE System.err.println("文件下载结束!"); 5FKb7 } p,0J $L catch(Exception e){e.printStackTrace ();} 9}G.F r } F/}(FG<'>I t*KgCk 1 7XrXx:*a5 //获得文件长度 ?QR13l( public long getFileSize() ufq9+} { 2Tt^^Lb int nFileLength = -1; |}$ZOwc try{ xYSNop3_ URL url = new URL(siteInfoBean.getSSiteURL()); 4b5'nu HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ?9W2wqN>o httpConnection.setRequestProperty("User-Agent","NetFox"); (m:ktd=x A}"aH |%\>+/j$ int responseCode=httpConnection.getResponseCode(); O S?S$y if(responseCode>=400) {_[\k^98> { uPh/u! processErrorCode(responseCode); s&.VU|=VQ@ return -2; //-2 represent access is error 2":{3=oW~ } {zha jY7 QTe>EJ12 85gdmla@9 String sHeader; V\|V1c K-X@3&X} cI#! Y for(int i=1;;i++) &-R(u}m-F { V)q|U6R //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 0Tp,b (;n //Utility.log(in.readLine()); 4C]>{osv sHeader=httpConnection.getHeaderFieldKey(i); crvq]J5 if(sHeader!=null) 9lU"m_
QT4 { R%EpF'[~[ if(sHeader.equals("Content-Length")) `bAOhaB,/ { CQ;.}=j
, nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); }[FP"# break; M?[~_0_J } Rlyx&C8 } Lkf}+aY else d,y%:F 4 break; e<Bwduy } )Up'W } ))NiX^)8^ catch(IOException e){e.printStackTrace ();} -h%!#g catch(Exception e){e.printStackTrace ();} oZS.pi =wcqCW,] D #Ku5~j Utility.log(nFileLength); SW; %2 zt3y5'Nk gR#lRA/ return nFileLength; X6Wj,a } j84g6; 4Dv /\-iV)h1@ .$]%gjIBCl //保存下载信息(文件指针位置) d&G#3}kOb% private void write_nPos() ;}W-9=81 { C]01(UoSZ try{ ]/cVlpZ{f output = new DataOutputStream(new FileOutputStream(tmpFile)); ZvVrbj& output.writeInt(nStartPos.length); #]vs*Sz for(int i=0;i<nStartPos.length;i++) tqYwPSr { @gM>Lxj // output.writeLong(nPos); 9V/:1I0?&0 output.writeLong(fileSplitterFetch.nStartPos); aM6qYO!jA
output.writeLong(fileSplitterFetch.nEndPos); iD"9,1@~n } 552yzn1 output.close(); "tX=^4 } @w[2 BaDt catch(IOException e){e.printStackTrace ();} 2leTEs5aK` catch(Exception e){e.printStackTrace ();} D *Hy 2eZ. } G[4$@{ YYs/r YEiQ`sYKG //读取保存的下载信息(文件指针位置) ;&$Nn'~a private void read_nPos() G\4*6iw: { T=~D>2C try{ sk>E(Myo DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ZOIx+%/Vd# int nCount = input.readInt(); #=V[vbTY nStartPos = new long[nCount]; D.;iz>_}Y nEndPos = new long[nCount]; UD6:X&Un for(int i=0;i<nStartPos.length;i++) zMI_8lNz { \#%1t nStartPos = input.readLong(); L!l`2[F| nEndPos = input.readLong(); Mv%"aFC } [!'fE#"a input.close(); QHmF,P } Eb.k:8?Tn catch(IOException e){e.printStackTrace ();} 5S/YVRXq catch(Exception e){e.printStackTrace ();} G.l
~!; } +B#+' *k^'xL >"?jW@|g private void processErrorCode(int nErrorCode) appWq}db { Mq,2S System.err.println("Error Code : " + nErrorCode); tH^]`6"QUa } !Sj0! \ E Z+L' V
X"!a //停止文件下载 ]mZN18# public void siteStop() U,7O{YM { <Y"h2#M " bStop = true; 3-6Lbe9H for(int i=0;i<nStartPos.length;i++) HB:VpNFn fileSplitterFetch.splitterStop(); jBLLx{ 7Bs:u eJ3;Sd'' } 1wTPT,k } AdGDs+at, //负责部分文件的抓取 :JD*uu **FileSplitterFetch.java sn-P&"q */ !E.CpfaC package NetFox; dK d"2+fH 6i7+.#s $ts1XIK% import java.io.*; #C#*yE import java.net.*; 5h7M3s !HCuae3_ 9kby-A4 public class FileSplitterFetch extends Thread { 7M, (!*b `:#IZ Zp qb0ro String sURL; //File URL :/XWk
% long nStartPos; //File Snippet Start Position -J]j= long nEndPos; //File Snippet End Position bx._,G int nThreadID; //Thread's ID .g?Ppma boolean bDownOver = false; //Downing is over 5[0W+W
boolean bStop = false; //Stop identical 5KgAY;| FileAccessI fileAccessI = null; //File Access interface .8]buM5_G WWgJ !Uz 4`zK`bRcK# public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException PFI^+'; { M.u1SB0 this.sURL = sURL; ^`+Kjhht this.nStartPos = nStart; e#!,/pE this.nEndPos = nEnd; c@|f'V4 nThreadID = id; 5H}d\=z fileAccessI = new FileAccessI(sName,nStartPos);//定位 y"Ios:v@- } n=A}X4^ 9+"ISXS WGA"e public void run() &|I{ju_ { 7 0Wy]8<P while(nStartPos < nEndPos && !bStop) ,u S)N6'b6 { oCSJ<+[(C
Fp~0 ^ 'b:UafV try{ 63HtZ=hO7 URL url = new URL(sURL); @pN6uDD}R HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ~u-_DOA httpConnection.setRequestProperty("User-Agent","NetFox"); vH@$?b3VP String sProperty = "bytes="+nStartPos+"-"; |;R-q8 httpConnection.setRequestProperty("RANGE",sProperty); 9#a/at] Utility.log(sProperty); Ni#y=cb Vk%W4P"l :|Bzbn=N2 InputStream input = httpConnection.getInputStream(); 5#::42oE //logResponseHead(httpConnection); <Ys7`e6eY y2Vc[o(NP $it>*% byte[] b = new byte[1024]; RY*yj&?w[ int nRead; xI8v'[3 while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) Nrc-@ ] { \ $
:)Ka nStartPos += fileAccessI.write(b,0,nRead); cyWDtq //if(nThreadID == 1) w^/"j_p@ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); $'b b)@_ } g$mqAz< fw0Z- 9* rm,h\ Utility.log("Thread " + nThreadID + " is over!"); hYh~[Kr^@^ bDownOver = true; Y4*?QBYA //nPos = fileAccessI.write (b,0,nRead); ? \NT'CG } F-Ywl) catch(Exception e){e.printStackTrace ();} DkBVk+ } =[o/D0-Kn } -ha[xM05 k?=_p6> U6 H@l# //打印回应的头信息 .T}S[`Yx5 public void logResponseHead(HttpURLConnection con) *1_A$14l {
5<?/M<i for(int i=1;;i++) R= *vPS { =JB1 ]b{| String header=con.getHeaderFieldKey(i); /ee4 v! if(header!=null) U6oab9C?k //responseHeaders.put(header,httpConnection.getHeaderField(header)); N9cUlrDO Utility.log(header+" : "+con.getHeaderField(header)); Y--Uo|H else Mhg_z.Z break; Toc="F`SW } ;923^*\:F{ } PQ[x A* RDQK_Ef: )wz3m L public void splitterStop() OPVcT { *|k/l I
bStop = true; W=T,hOyh<W } Fs)m;C /|{~GD +A& 2u'h,on? } h^"OC$ o9uir"= }z8HS<
#Q /* mmrz:_ **FileAccess.java :u>9H{a *//文件访问(定位,写) 0^rDf
L package NetFox; au 5qbP import java.io.*; >0qe*4n|M xiG_l-2l knJoVo] public class FileAccessI implements Serializable{ o2M4?}TpIV MUd
9R //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 5Mq7l$]h$ RandomAccessFile oSavedFile; &%4*~;o long nPos; F[5\
x0 w>ap8><4 N61\]BN< public FileAccessI() throws IOException csay\Q{ { 1#<KZN =$ this("",0); ^w|apI~HSE } Td6"o&0A! '+cPx\4 ]DO"2r public FileAccessI(String sName,long nPos) throws IOException 'u{DFMB-A { g x~fZOF_ oSavedFile = new RandomAccessFile(sName,"rw"); k3wAbGp this.nPos = nPos; <ny)yK oSavedFile.seek(nPos); !Yan}{A, } %VD>S 'P^6H$0 uY6|LTK&x public synchronized int write(byte[] b,int nStart,int nLen) l@zr1g) { nc#}-}`5 int n = -1; Y
'&&1R try{ D.zEE-cGyb oSavedFile.write(b,nStart,nLen); PG<tic<? n = nLen; )-q#hY } 96UL](l(` catch(IOException e) HV-c
DL { `9BZ))Pg e.printStackTrace (); o(GXv3L } _ KBN @: u> e^)+bmh return n; ?ACflU_k } VfWU-lJ 1t&LNIc|^ N 4Kj)E@ } @r7ekyO8) E,u/^V9x 6Ih8~Hu /* D%[yAr;r **SiteInfoBean.java 8t)5b.PS */ KrVP#|9%" package NetFox; vmEbk/Vy 8EbJ5wu/%S BwpEIV@b] public class SiteInfoBean { v\&C]W] $?x;?wS0V 1eod;^AP9 private String sSiteURL; //Site's URL v_U+wga private String sFilePath; //Saved File's Path CMu/n]?c private String sFileName; //Saved File's Name 3|++2Z{}, private int nSplitter; //Count of Splited Downloading File 6:\0=k5 :$k]; ;og[q public SiteInfoBean() [f ._w~ {//nSplitter的缺省值为5 0eJqDCmH //default value of nSplitter is 5 'xK ,|U this("","","",5); b*5Yy/U } J}zN]|bz A^L8" }N^3P0XjYq public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) <GdQ""X { !+R_Z#gB sSiteURL= sURL; ?aMd#.& sFilePath = sPath; G~.bi<(v sFileName = sName; )t?_3'W this.nSplitter = nSpiltter; Nbyc,a[o GkU]>8E'" :,8eM{.Q } TyGsSc A#;TY:D2 W)LtnD2 w public String getSSiteURL() #Y_v0.N { 5Sh.4A\ return sSiteURL; }L|cg2y } Bk
yW IKs2.sj"o h0c&}kM public void setSSiteURL(String value) Yn>y1~ { .E/NlGm[ sSiteURL = value; :c/](M } 4*9WxhJ ]0 8|2I/#F}] |+h8g@;Z public String getSFilePath() *Q`y'6S { d>bS) return sFilePath; WoSJp5By$ } iJ%`ym4Y Xhk_h2F[ TM*<hC public void setSFilePath(String value) yS";
q { S!{Kn ;@ sFilePath = value; ptCAtEO72 } rvwfQ'14 ;sZHE&+ A6AIkKjzq public String getSFileName() ^hIKDc!.m { PTf.(B"z return sFileName; QVJvuiUh } j87IxB?o /sa\Ze;E $P7G,0- public void setSFileName(String value) 0ofl,mXW { h 1`yW#% sFileName = value; oHj64fE9 } Mz:t[rfs v:w $l{7 J6m(\o public int getNSplitter() /`YbHYNF[ { u*C"d1v= return nSplitter; Kj`sq":Je0 } V9r58hbVT fPHv|_XM> M6!kn~ public void setNSplitter(int nCount) :*1Gs, { 1,W%t\D nSplitter = nCount; 2s
EdN$O } G`w,$:, } y]?%2ud/ = ~SJOynSz,
nP?(9;3* /* <HG~#oBRq **Utility.java *E.{i
*/ .F)b9d[? package NetFox; Q=gVxS HqOSQ<-Fo 3Du&KZ public class Utility { 4ej$)AdW3 h&yaug,. 1&QI1fvx public Utility() \I,<G7!0 { zv#i\8h^p GFlsI-*` H:9(
XW } $F G4wA K(6=) //线程睡眠 FPFt3XL public static void sleep(int nSecond) .1|'9@]lj4 { &r DOqj try{ d-N<VVcy\ Thread.sleep(nSecond); F6Q #{Ufq } 1Q?hskL catch(Exception e) *TE6p {
6/@ cP/ e.printStackTrace (); _E'M(.B< } ej%C<0/%n }
pb E`Eq |.(o4<nx. //日志 yo
(&~r public static void log(String sMsg) lrq !}\aX { R"O9~s6N System.err.println(sMsg); &.(ZO] } eX_}KH-Q p2&KGtX' A|Y\Y } public static void log(int sMsg) hH[JY(V { msY"Y*4 System.err.println(sMsg); O IewG5O } um3
M4>K } u%}vTCg*p u3k+Xg: X:62)^~' /* 8<.KWr **TestMethod.java C7+TnJ */ *^.b}K% package NetFox; qM1$?U ]E=JUYf0 -h.YQC` public class TestMethod { ]"CAP% o@pM??&x
|qbJ]v! public TestMethod() |{oKhC^yG { ///xx/weblogic60b2_win.exe SxH}/I|W try{ F=P|vYL&& SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); cJ[n<hTv //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 5utj$ha2 SiteFileFetch fileFetch = new SiteFileFetch(bean); (1jkZ^7 fileFetch.start(); `H+Eo<U } {L4^IKI catch(Exception e){e.printStackTrace ();} zcZr
)Oh 9Hc#[Ml 8g0& (9<) } eq4<
{H>iL ;TW@{re public static void main(String[] args) 41C=O@9m { E RMh% C new TestMethod(); mU\$piei } ^ul `b } 7NXT.E~2 点击下载更多相关资料
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