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/* #'5C*RO **SiteFileFetch.java
L3N?^^] */ g?7I7W~?` package NetFox; 7LFJi@*8 import java.io.*; F.rNh`44 import java.net.*; OM>,1;UH] 7lLh4__;`6 A{Kc"s4fO public class SiteFileFetch extends Thread { <w,NMu" dnwTD\), Etj0k}
A SiteInfoBean siteInfoBean = null; //文件信息Bean j . "L= long[] nStartPos; //开始位置 {th=MldJ? long[] nEndPos; //结束位置 pA%}CmrMq FileSplitterFetch[] fileSplitterFetch; //子线程对象 Q1 t-Z;X long nFileLength; //文件长度 @p$Nw.{' boolean bFirst = true; //是否第一次取文件 DPWt=IFU boolean bStop = false; //停止标志 l1 M
% File tmpFile; //文件下载的临时信息 AfAlDM' DataOutputStream output; //输出到文件的输出流 g)3HVAT Vx
Vpl@ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) k^H&IS! public SiteFileFetch(SiteInfoBean bean) throws IOException thU9s%,
{ =00c1v siteInfoBean = bean; Mzg zOM //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); c 5%uiv] tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); X[SdDYMY if(tmpFile.exists ()) 2\4ammwT { 04j]W]8# bFirst = false; =~D QX\ read_nPos(); 5n0B`A }
x>]14bLz else icrcP ~$A { MQ#nP_i nStartPos = new long[bean.getNSplitter()]; H1t`fyri2 nEndPos = new long[bean.getNSplitter()]; xS'Kr.S
} jW8,}Xs ?lPn{oB9" **G5fS.^W k#g` n3L } B,5kG{2! a 23XrX *HONA>u
public void run() hl/) 1sOIR { F HK{cE //获得文件长度 X7~^D[X //分割文件 hEh` cBO //实例FileSplitterFetch 4@mK:v% //启动FileSplitterFetch线程 i^SPNs= //等待子线程返回 FUO 9jX try{ w-j^jU><3 if(bFirst) L-9AJk>V { C>:,\=y% nFileLength = getFileSize(); tH)fu%:p if(nFileLength == -1) u*S-Pji,x { 8}?wi[T System.err.println("File Length is not known!"); mB5Sm|{ } j[RY else if(nFileLength == -2) KXiStwS { rJM/.;Ag System.err.println("File is not access!"); |muZv!,E } )z_5I (?& else )Tl]1^ { %HD0N& for(int i=0;i<nStartPos.length;i++) m S4N%Q { jX;$g>P nStartPos = (long)(i*(nFileLength/nStartPos.length)); "(YfvO+ } \v_R]0m\ for(int i=0;i<nEndPos.length-1;i++) ;L@p|]fu { rU
|% nEndPos = nStartPos[i+1]; d6XdN } CklIrD{ nEndPos[nEndPos.length-1] = nFileLength; |%g)H,6c } ILIv43QKM( } *AG01# ZF $YiG0GK<" GD1L6kVd1 //启动子线程 &U_T1-UR2 fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; _&RGhA for(int i=0;i<nStartPos.length;i++) 7P:/ (P { .^wBv
'Y fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), T`2a) siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), @;X#/dZe nStartPos,nEndPos,i); #('GGzL6c Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); @ek8t2??x fileSplitterFetch.start(); %RIlu[J } %x8vvcO^t // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), juA}7 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); #!C|~= // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", |F +n7 nEndPos = " + nFileLength); #G\Ae:O // fileSplitterFetch[nPos.length-1].start(); Gce[RB: D^S"6v"z RREl($$p //等待子线程结束 `-g$
0lm7 //int count = 0; N>w+YFM //是否结束while循环 7[1VFc#tf boolean breakWhile = false; %3yrX>Js I9h{fB rX22%~1 while(!bStop) \Rw^&;\1 { rAk;8)O$ write_nPos(); Mehp]5* Utility.sleep(500); M hjIE<OI= breakWhile = true; a1x].{ p.5 *`, ) 1ZXRH;J40 for(int i=0;i<nStartPos.length;i++) "?6R"Vk?: { ypNeTR$4 if(!fileSplitterFetch.bDownOver) ; hU9_e { CoV@{Pi breakWhile = false; .uB[zJc break; C't%e } 6n/KL } rS0#]Gg if(breakWhile) Hp@cBj_@P2 break; ~ujg250.L X{iidTW`xv EcPvE=^c //count++; +&*>FeJY //if(count>4) $#_^uWN-M // siteStop(); iZ0.rcQj'o } KP!7hJhw O]l-4X#8F uN0'n}c;1. System.err.println("文件下载结束!"); ~Fo`Pr_ } ?sxf_0* catch(Exception e){e.printStackTrace ();} I#xhmsF } I.o3Old &-x/c\jz D"K!ELGW //获得文件长度 xOZvQ\% public long getFileSize() xM>dv5<E { _he~Y2zFz int nFileLength = -1; xEB4oQ5 try{ ]0pI6" URL url = new URL(siteInfoBean.getSSiteURL()); DvTbt?i[ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); G
}M! httpConnection.setRequestProperty("User-Agent","NetFox"); nTsPX Tat p+2uK|T9 z.W1Za int responseCode=httpConnection.getResponseCode(); zu1gP/ if(responseCode>=400) !9^GkFR6n { +EZr@ processErrorCode(responseCode); >P6U0 return -2; //-2 represent access is error ! &V,+}>) } VKi3z%kwK XV!UeBq HPK}Z|Vl String sHeader; |\]pTA$2 /sl#M ik0w\* for(int i=1;;i++) ^1ks`1 { eoPoGC //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); mW)"~sA //Utility.log(in.readLine()); #|lVQ@= sHeader=httpConnection.getHeaderFieldKey(i); l> >BeZ if(sHeader!=null) &jDRRT3 { tdC
kvVE if(sHeader.equals("Content-Length")) 1'5!")r { * =O@D2g0 nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); +7K]5p;!~ break; l_x>.' a } cr{dl\Na } hy:K) _
else bre6SP@ break; U7G|4( } !" : arK } *c@]c~hY, catch(IOException e){e.printStackTrace ();} &J=x[{R catch(Exception e){e.printStackTrace ();} ^9kdd[ t*Wxvoxk NO#^_N`#\ Utility.log(nFileLength); ,0$b8lb;x/ ||?wRMV OL[_2m*;9p return nFileLength; tWdP5vfp } QpifO fVBRP[, I3?:KVa //保存下载信息(文件指针位置) (yz8}L3 private void write_nPos() OZh+x`' # { Xg97[ I8/ try{ < YuI}d~' output = new DataOutputStream(new FileOutputStream(tmpFile)); !?)iP output.writeInt(nStartPos.length); J15$P8J for(int i=0;i<nStartPos.length;i++) WTh|7& { ?/ s=E+ // output.writeLong(nPos); L G9#D output.writeLong(fileSplitterFetch.nStartPos); PiIILX{DuH output.writeLong(fileSplitterFetch.nEndPos); ;"GI~p2~7 } 4U:+iumy2 output.close(); >l5JwwG } ^F1zkIE catch(IOException e){e.printStackTrace ();} mH3{<^Z6 catch(Exception e){e.printStackTrace ();} fKT(.VNq5 } GgjBLe=C @i:_JOl VAR/" //读取保存的下载信息(文件指针位置) 6UJBE<ntj private void read_nPos() K#p&XIY, { FdJC@Y-#uA try{ "i*Gi
\U DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); k4 %> F int nCount = input.readInt(); L:EJ+bNG nStartPos = new long[nCount]; RwwX;I"o% nEndPos = new long[nCount]; :Zd# }P for(int i=0;i<nStartPos.length;i++) wwmODw<tT { 1vxh3KS. nStartPos = input.readLong(); (.3L'+F nEndPos = input.readLong();
?hpk)Qu } R:JS)>B input.close(); #$%gs] } 9/|i.2& catch(IOException e){e.printStackTrace ();} #Ryu`b catch(Exception e){e.printStackTrace ();} J XnPKAN } c5rQkDW PZl(S}VY =U".L private void processErrorCode(int nErrorCode) u]cnbm { UoxF00H@! System.err.println("Error Code : " + nErrorCode); )u&_}6z } 9~mi[l~ g^En6n) +e"}"]n //停止文件下载 D 2Go,1 public void siteStop() ?-'Q-\j { 3B"rI bStop = true; Q<``}:y|> for(int i=0;i<nStartPos.length;i++) fhn0^Qc"+ fileSplitterFetch.splitterStop(); Tm^zoVi AjANuyUaP Fk(0q/b } z_l3=7R } E(U}$Zey //负责部分文件的抓取 ddHIP`wb **FileSplitterFetch.java z?"5="D */ JT^E`<nn package NetFox; J0p,P.G +;[`fSi j)IK import java.io.*; Azz]TO import java.net.*; L}a3!33)C xD?{Hw>QT# ,em6wIq, public class FileSplitterFetch extends Thread { |H_)u PewPl0 d8RpL{9\7 String sURL; //File URL p
go\(K0 long nStartPos; //File Snippet Start Position Z#o\9/{(R long nEndPos; //File Snippet End Position iK%Rq int nThreadID; //Thread's ID X0Oq lAw boolean bDownOver = false; //Downing is over r IK|} 5 boolean bStop = false; //Stop identical ZJ[ Uz_%W FileAccessI fileAccessI = null; //File Access interface nLfnikw& *E)Y?9u" }5tn public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException AYZds >#Q { fF[ g%?w this.sURL = sURL; rw\4KI@ L this.nStartPos = nStart; H@j ^, this.nEndPos = nEnd; 8:xQPd?3 nThreadID = id; o"1us75P fileAccessI = new FileAccessI(sName,nStartPos);//定位 j'J*QK&Q } \+AH>I;vO 5PL,~Y 4COf H7Al9 public void run() YKc{P"'/| { 49zp@a while(nStartPos < nEndPos && !bStop) }\*Sf[EMD { rzBWk !3&vgvr 1aT$07G0 try{ d|NNIf URL url = new URL(sURL); "DN `@ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 3CHte*NL= httpConnection.setRequestProperty("User-Agent","NetFox"); QF>[cdl?8 String sProperty = "bytes="+nStartPos+"-"; 'Lw\nO. httpConnection.setRequestProperty("RANGE",sProperty); Ul'G
g Utility.log(sProperty); )w`Nkx Hf-F-~E %ej"ZeM InputStream input = httpConnection.getInputStream(); `WW0~Tp3 //logResponseHead(httpConnection); }I`|*6Up Elq8WtS 4QVd{ byte[] b = new byte[1024]; Cp* n2 int nRead; 8Z!ea3kAT while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) H= y-Y_R { Le'\x`B nStartPos += fileAccessI.write(b,0,nRead); j&mL]'Zy //if(nThreadID == 1) ,RHHNTB(" // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); A{o{o++ } v:0i5h&M Ji[w; [qL g:clSN, Utility.log("Thread " + nThreadID + " is over!"); '~cEdGD9H bDownOver = true; VV4_ //nPos = fileAccessI.write (b,0,nRead); >lW*%{|b$^ } J@TM>R catch(Exception e){e.printStackTrace ();} TatyD**( } }00e@a } awK'XFk G9[-|[j^N Jr9}'l8 //打印回应的头信息 )AoFd> public void logResponseHead(HttpURLConnection con) yW&iUh=0 { !jW32$YTR for(int i=1;;i++) "%]dC{ { 6J*`<k/S String header=con.getHeaderFieldKey(i); Y"jDZG? if(header!=null) aS7zG2R4H //responseHeaders.put(header,httpConnection.getHeaderField(header)); !!86Sv Utility.log(header+" : "+con.getHeaderField(header)); I{PN6bn{> else W<L6, break; ^hgAgP{{ } VfwD{+5 } 1W
g8jr's ezvaAhd{ |Q;o538 public void splitterStop() GXRjR\Ch { \d+HYLAJn bStop = true; t_rDXhM } [s2V-'2
c$|dK }BrE|'.j' } gNd
J=r4 YeLOd b9N4Gr /* o%%fO **FileAccess.java ^!qmlx* *//文件访问(定位,写) 0)]1)z(P package NetFox; kk'w@Sn.( import java.io.*; n:D*r$ C|p 's?F ip WLLv a<{ public class FileAccessI implements Serializable{ $hQg+nY. Snu;5:R //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 sJ/e=1* RandomAccessFile oSavedFile; g8"7wf`0k long nPos; h12wk2@P/] U08?*{ vWH>k+9&X public FileAccessI() throws IOException ~a%hRJg { `yZZP this("",0); E3skC%} } |mmG
s He!!oKK> v`BG1&/| public FileAccessI(String sName,long nPos) throws IOException lKUm_; m { %},G(> oSavedFile = new RandomAccessFile(sName,"rw"); \2xBOe-a] this.nPos = nPos; J\'5CG oSavedFile.seek(nPos); ~,68S^nP)H } @t8kN6. O97bgj] })lT fy public synchronized int write(byte[] b,int nStart,int nLen) 1>VS/H` { p8d n-4 int n = -1; X);Zm7 try{ &;U7/?Q oSavedFile.write(b,nStart,nLen); ~UC/|t$ n = nLen; zD;]
sk4 } Te}yQ= + catch(IOException e) O)uM&B= { 1cBhcYv" e.printStackTrace (); EE6|9K> } bTGK@~ FraW6T}_ d$rUxqB. return n; Q'%o;z* } _-J @$d% sC_UalOC_ /2Lo{v=0[ } V55J[s*6! =awO63j> @:9fS /*
t} i97 ; **SiteInfoBean.java m8j-lNu */ H#6^-6;/ package NetFox; .Pes{uHg ;sR6dT) ?_>^<1I1 public class SiteInfoBean { G=HxD4l NJf(,Mr*| ]}7rWs[|1 private String sSiteURL; //Site's URL pEj^x[b`^ private String sFilePath; //Saved File's Path 7b,,%rUd private String sFileName; //Saved File's Name 6//FZ:q private int nSplitter; //Count of Splited Downloading File 7E3SvC|M qf`xH"$ p
<=% public SiteInfoBean() !NLvo_[Y {//nSplitter的缺省值为5 DsJn#>?Kh //default value of nSplitter is 5 zk'K.!
`^ this("","","",5); J.mewD!%z } ioNa~F& S?7V
"LF C<t'f(4s`u public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) -^4bA<dCCE { >2CusT 2 sSiteURL= sURL; b]<HhU sFilePath = sPath; VNrO(j DUv sFileName = sName; MJKl]& this.nSplitter = nSpiltter; cYM~IA U+PCvl=x Cz@FZb8 } OZ'.}((?n M2E87w vk)0n= public String getSSiteURL() 0\Yx.\X, { =ym return sSiteURL; 4^[}]'w } aaz"`,7_ +'['HQ) |@ZqwC= public void setSSiteURL(String value) (#B^Hyz! { 6{ +_T sSiteURL = value; }u-S j/K } lIVxW+ P"9@8aLB vDW&pF_eI> public String getSFilePath() 4l
ZJb { HKiVEg return sFilePath; H*{k4 } kV\-%:- Ue3B+k9w }kCn@ public void setSFilePath(String value) P,/13tZ#3 { `[@^m5?b- sFilePath = value; 2rO)qjiH } M*O(+EM IQw
%|^ *hZ~i{c,7 public String getSFileName() ;Lsjh# { GL5^_`n return sFileName; i9;27tT~< } }*.:Hv" uGa(_ut 'l'
X^LMD public void setSFileName(String value) 0n*rs=\VG { VZ2.w4b sFileName = value; ByhOK}u;P4 } 3|~(?4aE V9zywM gj[ >p=Wn public int getNSplitter() WbQhlsc: { mX@j return nSplitter; niYz9YX } jy!f{dsC Eg`R|CF @TA8^ND public void setNSplitter(int nCount) JN&MyA" { m)@Q_{=6M nSplitter = nCount; Mr=}B6` } Na.
nA } KP=D! l&q t&R!5^R C|4U78f{ /* |7QVMFZ **Utility.java E 4='m */ p*pn@z package NetFox; qSEB}1 66~e~F}z %Lp2jyv. public class Utility { MUbhEau? 3`&VRF8 V<i<0E public Utility() px w{ { :3a&Pb*PL ;23=p=/h n2n00%Wu[ } #"Eks79s t7|MkX1 //线程睡眠 OgEUq'' public static void sleep(int nSecond) k40Ep(M} { 7$+P|U try{ >oft :7p Thread.sleep(nSecond); e=gboR } W
il{FcHY catch(Exception e) u}Ei_
O<z { c8#T:HM|` e.printStackTrace (); n> MD\ZS } N@cMM1 } 5mI?pfm 3D
9N:c //日志 Az9X#h.vf public static void log(String sMsg) x*unye7 {
Z $!C= System.err.println(sMsg); M MAAHo } ?_VRfeztw *he7BUO e>
ar public static void log(int sMsg) ,'FD}yw4v { $Q8P@L)[ System.err.println(sMsg); k(zs>kiP } GhqgRzX }
*-9# /Cp T$H2'tK| J3H.%m!V /* d@-wi%,^ **TestMethod.java Sdgb#?MR| */ %S{o5txo package NetFox; nHSTeFI? uDILjOT d4d\0[ public class TestMethod { &bB6}H( U+4HG 7}<Sg public TestMethod() 'oC$6l'rQ { ///xx/weblogic60b2_win.exe )*!1bgXQ try{ 54=}GnZN SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); ;xSRwSNDi( //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); >4Iv[ D1 SiteFileFetch fileFetch = new SiteFileFetch(bean); N\_( w:q fileFetch.start(); "3@KRb4f } Lb!r(o>8Cb catch(Exception e){e.printStackTrace ();} dO+kPC 7k3p'FeS HKpD2M } PdR >;$1 Qqp)@uM^ PT mf public static void main(String[] args) 6yN"
l
Q7 { %h0D)6j
new TestMethod(); Am#m>^!qb } BpH|/7 }
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