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/* 0N[&3Ee8 **SiteFileFetch.java mpAR7AG6 */ F|Mi{5G% package NetFox; ZUz ^!d import java.io.*; Re:jVJgBz import java.net.*; 6:GTD$Uz. PWh^[Rd) 1c3TN#|)W public class SiteFileFetch extends Thread { >_rha~ N8qDdr9p?c )vmA^nU> SiteInfoBean siteInfoBean = null; //文件信息Bean V@>r*7\F long[] nStartPos; //开始位置 GRb*EeT long[] nEndPos; //结束位置 T2}FYVj?!g FileSplitterFetch[] fileSplitterFetch; //子线程对象 S6}@I ,Q long nFileLength; //文件长度 ,fK3ZC boolean bFirst = true; //是否第一次取文件 "|;:>{JC boolean bStop = false; //停止标志 V/cP4{L File tmpFile; //文件下载的临时信息 bCref$| DataOutputStream output; //输出到文件的输出流 Y2xL>F @L.82p{h //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Um1[sMc{au public SiteFileFetch(SiteInfoBean bean) throws IOException Z3>N<u8) { X37 L\e[c siteInfoBean = bean; ,yd
MU\so( //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); q@b|F- tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); \V9Z#> if(tmpFile.exists ()) -.g|l\ { NCxqh < bFirst = false; RoCfJ65 read_nPos(); 0|R# Tb;Y } ;a-$D]Db else +/#Ei'do { >=]'hyn]] nStartPos = new long[bean.getNSplitter()]; C6O8RHg nEndPos = new long[bean.getNSplitter()]; ??n*2s@t } /Q,{?';~ }2K $^uR kYzC#.|1 66^ycZCH } &1+X\c+tb
'9c2Q/ jiF?fX@ public void run() U4 13?Pe
{ D:Q
21Ch //获得文件长度 IbcZ@'RSw //分割文件 >^Se'SE] //实例FileSplitterFetch Hm+ODv9 //启动FileSplitterFetch线程 D")_;NLE1 //等待子线程返回 Lh.`C7] try{ sp@E8G%xO if(bFirst) P2nft2/eu? { 2e$w?W0^ nFileLength = getFileSize(); &$`yo` if(nFileLength == -1) DGevE~ { ,f1q)Qf System.err.println("File Length is not known!"); jy]JiQB } `DT3x{}_S else if(nFileLength == -2) 8k(P,o { upeU52@\ System.err.println("File is not access!"); Rb(SBa } >J|]moSVA else a_h]?5
:c { >vuY+o;B for(int i=0;i<nStartPos.length;i++) e"
]2=5g { 7\ nf:. nStartPos = (long)(i*(nFileLength/nStartPos.length));
9CCkqB/ } )5|I_PXB for(int i=0;i<nEndPos.length-1;i++) q~o,WZG { +za8=`2o nEndPos = nStartPos[i+1]; XQ4G) } S1/`th nEndPos[nEndPos.length-1] = nFileLength; K\vSB~{[ } ['%69dPh } RT>{*E<I U%h);!< %lg=YGLQB //启动子线程 ;Ag
3c+ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; WD'#5]#Y for(int i=0;i<nStartPos.length;i++) ' oFxR003 { 8ssJ<LP fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), c\% r38 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), tK
k#LWB nStartPos,nEndPos,i); ?BhMjsy. Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); P>9aI/d9 fileSplitterFetch.start(); 8u!"#S#>a } D1nq2GwS // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), V'w@rc\XN siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); w&xDOyW] // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", O$IjNx nEndPos = " + nFileLength); m^x6>9, // fileSplitterFetch[nPos.length-1].start(); au,t%8AC ^<X@s1^# t<n"-Tqu //等待子线程结束 .(Qx{r$ //int count = 0; Tr^nkD{ //是否结束while循环 k1VT /u boolean breakWhile = false; V^Hu3aUx8
~q&pF"va8 .'a&33J while(!bStop) ]0L&v7[ { nk3y"ne7 write_nPos(); *Sh^J+j Utility.sleep(500);
xG;-bJu breakWhile = true; D/h/Y) Y Jjl`_X$CB )Fb>8<% for(int i=0;i<nStartPos.length;i++) 4[r/}/iGo { fr!Pj(Q1 if(!fileSplitterFetch.bDownOver) Py{<bd { (MHAJ]Rx breakWhile = false; d6i6hcQE break; f{0F|w<gf } GU Q{r!S } 4Z|vnj)Z if(breakWhile) ~SSU` break; JF/,K"J 9M"].~iNE W5#611 //count++; I7^zU3]Ul //if(count>4) pu,?<@0YK // siteStop(); 0EJ(.8hwm } 7)%+=@ 67y Tvr@a US System.err.println("文件下载结束!"); hQNe;R5 } ;l}- Z@! / catch(Exception e){e.printStackTrace ();} 1n\ t+F } _e9:me5d"$ pStk/te,XK ]\ngX;h8G //获得文件长度 (LHp%LaZ\; public long getFileSize() e$Y[Z{T5 { GA`PY-Vs) int nFileLength = -1; e*j. try{ ZtHm\VTS URL url = new URL(siteInfoBean.getSSiteURL()); lD{Aa!\ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ?uMQP NYs httpConnection.setRequestProperty("User-Agent","NetFox"); {D g_?._d HHjt/gc}` l1]p'Liuu int responseCode=httpConnection.getResponseCode(); s}onsC if(responseCode>=400) `<[6YH_ { z6py"J@ processErrorCode(responseCode); /.M+fr S return -2; //-2 represent access is error <W]g2>9o9 } ];%0qb KsrjdJx, ' ^*~;k|;& String sHeader; n4lutnF |j3'eW&= nADX0KI for(int i=1;;i++) !`bio cA { ,7XtH>2s //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); SR*wvQnOx //Utility.log(in.readLine()); ?|e'Gbb_ sHeader=httpConnection.getHeaderFieldKey(i); (Z5##dS3 if(sHeader!=null) @E.k/G!~Nb { ) _ I,KEe if(sHeader.equals("Content-Length")) #.[AK_S5& { 8.bKb<y nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); m?HZ; break; P,=+W(s9} } q.2(OP>( } kF7V.m/~o else bxK(9. break; E+C5 h
;p& } i@NqC;~; } 4 g.
bR catch(IOException e){e.printStackTrace ();} 1009ES7* catch(Exception e){e.printStackTrace ();} a(]`F(L L !4t[hhe= Q!,<@b) Utility.log(nFileLength); $;G{Pyp /=uMk]h Vx_rc%' return nFileLength; f.GETw } F_uY{bg 3?E8\^N\n lt$zA%`odc //保存下载信息(文件指针位置) . |*f!w}5 private void write_nPos() H UoyLy { !6&W,0< try{ `MP|Ovns:H output = new DataOutputStream(new FileOutputStream(tmpFile)); +jC*'7p@ output.writeInt(nStartPos.length); sS
TPMh for(int i=0;i<nStartPos.length;i++)
htY=w}> { -yDs<
Xl // output.writeLong(nPos); .k4W_9 output.writeLong(fileSplitterFetch.nStartPos); `bKA+c,f output.writeLong(fileSplitterFetch.nEndPos); D\/xu-& } _ .i3,-l) output.close(); >\ST-7[^L } VGL#!4wK catch(IOException e){e.printStackTrace ();} ~"Gf<3^y+ catch(Exception e){e.printStackTrace ();} ]\RRqLDzkg } FZiW|G P\CDd=yWc )Z+{|^`kJ //读取保存的下载信息(文件指针位置) VCy5JH private void read_nPos() I &* _,d { gfU-"VpHE try{ &/.hx(#d DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); V E2tq k% int nCount = input.readInt(); +MK6zf nStartPos = new long[nCount]; c^8o~K>w84 nEndPos = new long[nCount]; TST4Vy3 for(int i=0;i<nStartPos.length;i++) >Q,zNs { ECa$vvK
m nStartPos = input.readLong(); 9s
+z B nEndPos = input.readLong(); hgRVwX } nxQ?bk}*d input.close(); vFrt|JC_{ } mYB`)M*Y catch(IOException e){e.printStackTrace ();} :"0J=>PH: catch(Exception e){e.printStackTrace ();} b{DiM098 } UkCnqNvx /\mKY%kyh /RLq>#:h** private void processErrorCode(int nErrorCode) `nR %Cav,U { CBf7]n0H System.err.println("Error Code : " + nErrorCode); CLKov\U\ } #$vRJ#S}U &@"]+33 hM@\RPsY //停止文件下载 G)>W'yxQ public void siteStop() 2Ha5yaTL { +)nT|w45 bStop = true; iV.p5FD for(int i=0;i<nStartPos.length;i++) ~`Qko-a& fileSplitterFetch.splitterStop(); M^rM-{?< _nT{g 3-40'$lE } Y^"4?96 } m8+(%>+7 //负责部分文件的抓取 l^NC]t **FileSplitterFetch.java D}Ilyk_uUw */ F="z]C;u package NetFox; ~#:e *:ro lhC6S'vq jn9 ShF import java.io.*; ~c{:DM import java.net.*; cd;NpN h$C@j~ :&'{mJW*{t public class FileSplitterFetch extends Thread { u"$a>S_ J3S&3+2G r0m)j String sURL; //File URL T#:F]= long nStartPos; //File Snippet Start Position vd#,DU=p! long nEndPos; //File Snippet End Position LU!1s@ int nThreadID; //Thread's ID -'rj&x{Q)U boolean bDownOver = false; //Downing is over iZ[tHw|| boolean bStop = false; //Stop identical Q"a2.9Eo FileAccessI fileAccessI = null; //File Access interface Z#`0txCF SP
2 8 guN4-gGDr< public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException c)C 5KaiPG { IN^9uL]B this.sURL = sURL; ST1Ts5I this.nStartPos = nStart; *2u
E this.nEndPos = nEnd; fUag1d nThreadID = id; rlok%Rt4Z fileAccessI = new FileAccessI(sName,nStartPos);//定位 QF-)^`N } .BTx&AqU 7x.%hRk pt:;9hA public void run() !^U6Z@&/R { {j(4m while(nStartPos < nEndPos && !bStop) >3;^l/2c { ](r
^.k,R OsW"CF2 HOYq?40.R try{ 5!fSW2N URL url = new URL(sURL); ^6 /j_G HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); "2n;3ByR httpConnection.setRequestProperty("User-Agent","NetFox"); DM7}&~ String sProperty = "bytes="+nStartPos+"-"; 3
%(Y$8U httpConnection.setRequestProperty("RANGE",sProperty); _^uc 0= Utility.log(sProperty); >.dHt\ 7{BnXN[ i|2$8G3 InputStream input = httpConnection.getInputStream(); $fArk36O# //logResponseHead(httpConnection); ":WYcaSi *d*oS7 |i)lh_iN byte[] b = new byte[1024]; l[n@/%2 int nRead; ^JhFI* while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) e&J3N { QJ4AL3
^6 nStartPos += fileAccessI.write(b,0,nRead); HY;oy( //if(nThreadID == 1) :k!j"@r // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); i^%-aBZ } < tQc_ ]UUI~sFE 7u%a/ < Utility.log("Thread " + nThreadID + " is over!"); IlHY%8F{ bDownOver = true; n! .2aq //nPos = fileAccessI.write (b,0,nRead); t!l%/$- } :4;S"p catch(Exception e){e.printStackTrace ();} u7k|7e=xk
} Jirct,k } 4]6 Qr 7~.ZE {;RF //打印回应的头信息 ^tE_LL+ji| public void logResponseHead(HttpURLConnection con) Z H-5Qy_ { *caLN,G for(int i=1;;i++) 5-p.MGso { CX+9R3pa String header=con.getHeaderFieldKey(i); g3rRhS if(header!=null) 7z<Cu< //responseHeaders.put(header,httpConnection.getHeaderField(header)); QFzFL-H~N Utility.log(header+" : "+con.getHeaderField(header)); Yn1?#%% else VN|G5* break; Pf8u/?/ } jfSg){ } 1pCkWe `C<F+/q V<-htV public void splitterStop() *-z4 <LAa { 94z8B;+H] bStop = true; qz:]-A } A7'b Nd6f9 5^F]tRz- fOW_h } i`~~+6`J + zDc 6$z'wy/* /* X8b#[40: **FileAccess.java {bTeAfbf] *//文件访问(定位,写) n#>5?W package NetFox; `cO|RhD@ import java.io.*; no3Z\@% cj^bh R9=K(pOT public class FileAccessI implements Serializable{ e`ex]py<C !w=,p.?V= //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 P!>g7X RandomAccessFile oSavedFile; 3uO8v{` long nPos; [0op)Kn a 2E t,WA% JjDS"hK# public FileAccessI() throws IOException Gt'/D>FE0 { U9F6d!:L7A this("",0); qL>v&Rd< } 'fl(N2t RO$*G
jQd ]+lF=kkc% public FileAccessI(String sName,long nPos) throws IOException paYz[Xq { ^?sSx!:bZ oSavedFile = new RandomAccessFile(sName,"rw"); V g6S/- this.nPos = nPos; ]Da4.s*mW oSavedFile.seek(nPos); +U=KXv } u7 u~ p|s2G~0< LT&/0 public synchronized int write(byte[] b,int nStart,int nLen) JilKZQmk { R25-/6_V> int n = -1; Xr2 Wa try{ U2=hSzY oSavedFile.write(b,nStart,nLen); ax]9QrA n = nLen; K
/ZHJkJ7 } }
Ab_o#Zy catch(IOException e) /gX%ABmS { ebD{ pc`& e.printStackTrace (); %\l0-RA@< } &&*wmnWCS{ [[$Mh_MD dL(4mR8 return n; D0KELAcY } ]eD [4Y\#t }M="oN~w YZ{;%&rB } d>~`j8,B e~*S4dKR v<`$bvv? /* Pd,!& **SiteInfoBean.java $4:~*IQ */ XC2Q*Z package NetFox; ]Qc: Zy3 X)y*#U eoJFh public class SiteInfoBean { G*=H;Upi 4(;20(q] 8m \;P private String sSiteURL; //Site's URL #-A5Z;TD. private String sFilePath; //Saved File's Path E8
\\X private String sFileName; //Saved File's Name wb@]>MJ}[s private int nSplitter; //Count of Splited Downloading File 6XZN># .GtINhz* w[|y0jtw public SiteInfoBean() r*>QT:sB {//nSplitter的缺省值为5 iAg}pwU //default value of nSplitter is 5 NrW [Q3E$ this("","","",5); JfR kp } VJGwd`qo*A mxZ4
HD{ J (=4 public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) &4[<F"W>47 { `c> A>c| sSiteURL= sURL; :> x:(K sFilePath = sPath; EyzY2>"^ sFileName = sName; }&=uZ: this.nSplitter = nSpiltter; T<_+3kw &KLvr| ;,R[]B01u } E=3#TBd :E}6S "hz>{oe public String getSSiteURL() i^~sn `o { 5NFq7&rJ6 return sSiteURL; e-1;dX HL } n2H&t>N #dL5x{gV= uTxX`vH@! public void setSSiteURL(String value) |:{g?4Mi { hLCsQYNDU sSiteURL = value; 9$8X>T^ } $]xE$dzJ ]U#JsMS _3*: y/M_ public String getSFilePath() L)@`58Eil { iz,]%<_PE return sFilePath; l A 0-?k } ^V_ku@DY |)~Ex 9%ev wbn^R' public void setSFilePath(String value) ?]759,Q3L { ;B,nzx(L sFilePath = value; 6oPUYn- } ^f!Zr 8Ix-i $b&BH'*'~ public String getSFileName() ,M| QN* { PEK.Kt\M return sFileName; B!$V\Gs } cu)@P 0I [%HYh7ua< I3V{"Nx6 public void setSFileName(String value) c8H9_6 { 2(@LRl>: sFileName = value; [P (rY } 9(i0"hS^ &Xj {:s# 5)h+(u C3 public int getNSplitter() W9:fKP { uZo]8mV return nSplitter; i7Y
s_8A"9 } BXagSenc <>ZBW9 o6`Y7,] public void setNSplitter(int nCount) GGYX!=]~ { r3*+8D~a_ nSplitter = nCount; $w 5#2Za } s|fCR } jAD+:@ m9\@kA ,<R>Hiwg/s /* WRN8#b **Utility.java WsG"x>1n */ Fr938q6^- package NetFox; Uqb]e?@ u&hDjE 9Ba%= public class Utility { JNU"5sB [,.[gWA a>-}\GXTA public Utility() n23%[#,r {
&"@HWF 3:l: ~Vn +H2m< } xMO[3D&D g] 7{5 //线程睡眠 /y+;g{ public static void sleep(int nSecond) lq7 8gOg{ { Fjb4BdZP try{ IN]`lJ Thread.sleep(nSecond); A &X } %OezaNOtm catch(Exception e) duZ|mT8Q== { y\r^\ S9% e.printStackTrace (); wR5\^[GN } .b!OZ } j\i;'t}8g
ox i
a} //日志 gNMKGf\Y public static void log(String sMsg) ^?sSsHz { VuJfo9 `E System.err.println(sMsg); MbT
ONt?~v } [="g|/M) W07-JHV% AaCnTRG public static void log(int sMsg) 8gu'dG = { 02]8|B(E90 System.err.println(sMsg); Fyi?,, } y{&{=1# } |,M#8NOp: iZDb.9@&t !>a&`j2:W /* 8o%<.] **TestMethod.java 42b=z//; */
t?Njw7 package NetFox; *Dd(+NI y4)ZUv,} HlOAo:8' public class TestMethod { k=ior X$j|/)) ~x+:44* public TestMethod() eE#81]'6a { ///xx/weblogic60b2_win.exe cAsSN.HFS try{ S+Yy SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); &kr_CP:; //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); uJ)\P SiteFileFetch fileFetch = new SiteFileFetch(bean); ^>vO5Ho. fileFetch.start(); h^[ppc{Z } $h|I7` catch(Exception e){e.printStackTrace ();} 9:}RlL+cOk F|
,Vw{ ;ZE<6;#3IP } ^G7n# RpaA)R, $@ T6g public static void main(String[] args) )+Y\NO?O { 6a 2w-}Fs new TestMethod(); SoM
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