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/* $D\l%y/C **SiteFileFetch.java Vd>.fb\U2 */ s@[t5R
package NetFox; U7%pOpO! import java.io.*; 4S EC4yO import java.net.*; GaqG8%. n)!_HNc9 (E(:F[.S public class SiteFileFetch extends Thread { g E+OQWu J9c3d~YW D2cIVx3:( SiteInfoBean siteInfoBean = null; //文件信息Bean q>4i0p8^ long[] nStartPos; //开始位置 e+ w long[] nEndPos; //结束位置 C|@k+^S FileSplitterFetch[] fileSplitterFetch; //子线程对象 Z?aR9OTP
long nFileLength; //文件长度 w*P4_=
:%Y boolean bFirst = true; //是否第一次取文件 !!O{ ppM boolean bStop = false; //停止标志 %FFm[[nxI File tmpFile; //文件下载的临时信息 =\7p0cq&* DataOutputStream output; //输出到文件的输出流 }JMkM9] `(suRp8! //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) `+;oo B public SiteFileFetch(SiteInfoBean bean) throws IOException zP'pfBgbJW { < LAD siteInfoBean = bean; LVl0:!>~ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); w}q@VVB% tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); >683 4e if(tmpFile.exists ()) 4lUE(#kUM { Zw\V}uXI? bFirst = false; Wc>)/y5$ read_nPos(); 8"UG&wLT } IX?%H!i else <+,0G` { =>%%]0 nStartPos = new long[bean.getNSplitter()]; B^Mtj5Oc nEndPos = new long[bean.getNSplitter()]; :!!`!*!JH } !TZ/PqcE )stWr r& B2WX#/lgd 4EbiCSo } ^Es)?>eah :I(gz~u6 )nxIxr0d- public void run() kzpbs?<; {
ts!aKx //获得文件长度 <qY>d,+E' //分割文件 EXzNehO~e //实例FileSplitterFetch [IA==B7 //启动FileSplitterFetch线程 :FpBz~!a //等待子线程返回 L([ >yQZ try{ =,G(1# if(bFirst) ;-^9j)31+F { qk1D#1vl nFileLength = getFileSize(); 6mpUk.M" if(nFileLength == -1) $%8n,FJ[ { \9zC?Cw System.err.println("File Length is not known!"); yP]W\W' } OBQ!0NM_b else if(nFileLength == -2) {;M/J { iPpJ`i#@+ System.err.println("File is not access!"); t3JPxg]0k' } m48Y1'4 else Vn;]''_ { oHnpw U for(int i=0;i<nStartPos.length;i++) ()
;7+ { I;:_25WGC nStartPos = (long)(i*(nFileLength/nStartPos.length)); )p9n|C } 7/!C for(int i=0;i<nEndPos.length-1;i++) SJ+-H83x
{ ;#yz i2f nEndPos = nStartPos[i+1]; .cog9H' } 'p]qN;`'O$ nEndPos[nEndPos.length-1] = nFileLength; 0\*<k`dY } %$?Q% } ]%hI- vUeel% xTm&`Xo //启动子线程 gg_(%.> fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; x[6Bc for(int i=0;i<nStartPos.length;i++) v"_#.!V { @sO.g_yM fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Z@A 1+kUS siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), RE$-{i nStartPos,nEndPos,i); |XG7UH Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); kcUt!PL fileSplitterFetch.start(); Te#[+B? } b"bj|qF~E // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), TY?io@ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Ve)
:I // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", (@ sKE nEndPos = " + nFileLength); n\9*B##
// fileSplitterFetch[nPos.length-1].start(); S-|$sV^cG Ooy96M~_G 6mLE-(
Z7 //等待子线程结束 <P-r)=^ //int count = 0; K\Q
1/}) //是否结束while循环 j,jUg}b boolean breakWhile = false; Q NEaj\ -. {7;6:(k ,CF~UX%
bU while(!bStop) 8;3FTF { ^o:5B%}#[ write_nPos(); >UH=]$0N Utility.sleep(500); +?tNly` breakWhile = true; <{kj}nxz J1t?Qj;f3 j<?4N*S for(int i=0;i<nStartPos.length;i++) ABGL9;.8 { o*'3N/D~ if(!fileSplitterFetch.bDownOver) WU_Q
7%+QS { 8+F2
!IM breakWhile = false; 5]JXXdt break; DLZ63' } 6}2Lt[>O } omP7| if(breakWhile) 8/v_ uEG break; VZR6oia :+$_(*Z 2c]O Mtk //count++; j)Gr@F> //if(count>4) ccAEN // siteStop(); "p\KePc;@ } `0N/
/Q \g/E4U.+ P6rL;_~e System.err.println("文件下载结束!"); S)?B
I } m`aUz}Y>c catch(Exception e){e.printStackTrace ();} p9J( ,} } l[Oxf| 3kg+*]tLx Uz_{jAhW] //获得文件长度 L^}kwu# public long getFileSize() QKxuvW { #a|5A:g% int nFileLength = -1; 9AaixI try{ **"sru;@= URL url = new URL(siteInfoBean.getSSiteURL()); V6N#%(?3 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ww*F}}( httpConnection.setRequestProperty("User-Agent","NetFox"); Emo]I[<&q V qf}(3K0 :T2K\@ int responseCode=httpConnection.getResponseCode(); \)hmg if(responseCode>=400) Sob+l'U$ { 2J$Uz,@ processErrorCode(responseCode); gnt[l0m return -2; //-2 represent access is error +H_Z!T.@ } nS#;<p$\ X8<ygci+.5 GS@ wG String sHeader; +8"H%#~ URwFN OM2 Im=E?t for(int i=1;;i++) &Jz%L^ { m6}"g[nN //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); NH/H+7,o //Utility.log(in.readLine()); XUWza=BR" sHeader=httpConnection.getHeaderFieldKey(i); @EvnV. if(sHeader!=null) h fNBWN { nr }H;wB if(sHeader.equals("Content-Length")) v{+*/NQ_ { +%^D) nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); [z?XVl< break; 4Q.70 } O<5bsKw'r } "[G
P)nC else V.}U p+WL break; M II]sF } zKZ6Qjd8! } s_|wvOW)' catch(IOException e){e.printStackTrace ();} 4YJs4CB catch(Exception e){e.printStackTrace ();} ^H>vJT {k>m5L ;X>KP,/r$ Utility.log(nFileLength); /D~:Ufw &' Ch[Wo]H tfsG
P]9$ return nFileLength; ]yyfE7{q } ;tj_vmZ@R "dt3peH PGJ?=qXr# //保存下载信息(文件指针位置) cCwT0O#d private void write_nPos() w% M0Mu { ?mMd6U&J try{ 7be?=c)+" output = new DataOutputStream(new FileOutputStream(tmpFile)); ) ":~`Z*@ output.writeInt(nStartPos.length); }9'rTLM for(int i=0;i<nStartPos.length;i++) Jyn>:Yq( { J{91 t | // output.writeLong(nPos); kZ2+=/DYN output.writeLong(fileSplitterFetch.nStartPos); eL],\\q output.writeLong(fileSplitterFetch.nEndPos); uE>}>6)b } xH0Bk<`V: output.close(); M@.1P<:h } 5D'8 l@7 catch(IOException e){e.printStackTrace ();} A="h}9ok catch(Exception e){e.printStackTrace ();} JprZ6
> } jtA
Yp3M-$ @0aUWG!k St?vd+(> //读取保存的下载信息(文件指针位置) ^+pmZw90 private void read_nPos() mZORV3bN { *`\>J.
try{ ,30&VW## DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); y|X[NSA int nCount = input.readInt(); 7XZ!UC;i nStartPos = new long[nCount]; PR Y)hb;1 nEndPos = new long[nCount]; Tf+B<B: for(int i=0;i<nStartPos.length;i++) [scPs,5Y { K[sfsWQ. nStartPos = input.readLong(); D[<8(~VP nEndPos = input.readLong(); !j- 7, } >:s:`Au input.close(); xi-^_I } <K)^MLgN catch(IOException e){e.printStackTrace ();} 4bmpMF- catch(Exception e){e.printStackTrace ();} O,7P6 } K,J:i^2 ~;{)S}U@R \wMr[_LW private void processErrorCode(int nErrorCode) C!:\H<gI { >2_J(vm> System.err.println("Error Code : " + nErrorCode); TkK- r(= } M6?* \9E !X8:#a( "g0Ln5& //停止文件下载 w+Ag!O}.L public void siteStop() ~6R|
a { |n0 )s% 8` bStop = true; !Y5O3^I=u for(int i=0;i<nStartPos.length;i++) m'Wz0b^BO fileSplitterFetch.splitterStop(); 8c#u"qF & %1XYpA.0 &B[$l`1 } ?QZ\KY } 9c<lFZb; //负责部分文件的抓取 z"R-Sme **FileSplitterFetch.java q[r|p"TGov */ 5pz%DhjLo package NetFox; 4e9mN~ @HR]b^2E S&9{kt|BI import java.io.*; i_V~SC` import java.net.*; 55fV\3F|R e1K,4Bq 8JGt|, public class FileSplitterFetch extends Thread { )Nk^;[ R}BHRmSQ 'AHI;Z~Gk String sURL; //File URL qbmy~\ZY long nStartPos; //File Snippet Start Position C";F's) long nEndPos; //File Snippet End Position Qu!Lc:oM? int nThreadID; //Thread's ID nKch_Jb boolean bDownOver = false; //Downing is over :v=Yo boolean bStop = false; //Stop identical <kt,aMw[* FileAccessI fileAccessI = null; //File Access interface (eSa{C\ R j1Z F.K7w public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException m@)K]0g<f { 59IxY
? this.sURL = sURL; J'|qFS this.nStartPos = nStart; 5|";L&` this.nEndPos = nEnd; nRJcYl~
Y nThreadID = id; Td}#o!4! fileAccessI = new FileAccessI(sName,nStartPos);//定位 _yumUk-QW } Em-88=XO <S%M*j #"=_GA^.{ public void run() "^yTH/m { g*TAaUs|n while(nStartPos < nEndPos && !bStop) 6;k#|-GU& { $s$z"< t(}\D]mj k?KKb
/&b try{ #O*
ytZ URL url = new URL(sURL); noV]+1#"V HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); =.f]OWehu. httpConnection.setRequestProperty("User-Agent","NetFox"); (@>X!]{$ String sProperty = "bytes="+nStartPos+"-"; hU@9vU<U httpConnection.setRequestProperty("RANGE",sProperty); $xJVUV Utility.log(sProperty); Rcfh*"k yuWoz*:t
5k {a(I InputStream input = httpConnection.getInputStream(); dr'# //logResponseHead(httpConnection); d\+smED 1^TOTY .|;`qUo byte[] b = new byte[1024]; x~rIr#o int nRead; ?>LsIPa while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) I#tn/\n { 7g[T#B'/x, nStartPos += fileAccessI.write(b,0,nRead); F_$eu-y //if(nThreadID == 1) XOAZ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); y4^6I$M7V } xQT`sK+ [R TB|0Q 615, P/ Utility.log("Thread " + nThreadID + " is over!"); "X=l7{c/ bDownOver = true; =0c yGo //nPos = fileAccessI.write (b,0,nRead); -y;SR+ } -L}crQl.'c catch(Exception e){e.printStackTrace ();} 89?$xm _m } *+{umfZy } aOFF"(]Cl LxC*{t/>8 E`}KVi57 //打印回应的头信息 #XE`8$
public void logResponseHead(HttpURLConnection con) +q[puFfl { ;9MsV.n for(int i=1;;i++) OQIQ { bsO78a~=P String header=con.getHeaderFieldKey(i); Ii_X^)IL( if(header!=null) fH-V!QYGF //responseHeaders.put(header,httpConnection.getHeaderField(header)); BrcT`MM[(= Utility.log(header+" : "+con.getHeaderField(header)); I"eXoqh else rZm|7A)i break; h(*!s`1 } { AdPC?R` } gpB3\ Q&S\?cKe $yS7u public void splitterStop() Rs_bM@ { `VM@-;@w bStop = true; R/&Bze } ,{!~rSq-l Z<T%:F Ke@zS9 } #Y6'Q8gf #0V$KC*> q|xJ)[AO /* A6v<+`? **FileAccess.java O:3LA-vA *//文件访问(定位,写) ~OO&%\$k package NetFox; [R:\ import java.io.*; `],'fT|,S &>y[5#qOl ,g\%P5 public class FileAccessI implements Serializable{ D^V0kC p!F xFvDKW)_X7 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 })f4`$qf RandomAccessFile oSavedFile; G41 gil6k long nPos; 0 UdAF R1 u1 `&]<_Jc1 public FileAccessI() throws IOException 4
qMO@E_ { #/!fLU@ this("",0);
c]3% wL } s8 S[w BBnW0vAZ* F=)9z+l# public FileAccessI(String sName,long nPos) throws IOException wn2+4> |~p { )bN|*Bw3 oSavedFile = new RandomAccessFile(sName,"rw"); ~u|k1 this.nPos = nPos; l+g\xUP oSavedFile.seek(nPos); 3{OY& } ernZfd{H 1|/P[!u ".aypD)W public synchronized int write(byte[] b,int nStart,int nLen) 1haNca_6, { WrWJ!
int n = -1; &-^|n*=g6 try{ ]r++YIg!j oSavedFile.write(b,nStart,nLen); ,9jq
@_ n = nLen; 1 ?X(q } fT9z 4[M catch(IOException e) /HCd52 { uFxhr2
<z e.printStackTrace (); 1NJ,If] } ;:(kVdb 2ZHeOKJ- t[gz#' return n; AL*P2\8 } I{>U 7i
5 N$#518 4-lG{I_S: } 8w,U[aJm $r0~&$T& x\HHu] /* t\YN\`XD **SiteInfoBean.java d:KUJ
Y. */ .1F(-mLd package NetFox; Tc{r;:'G< UG)J4ZX zQY|=4NP public class SiteInfoBean { N~I2~f Q.SLiI
#XSs.i{ private String sSiteURL; //Site's URL 00s&<EM private String sFilePath; //Saved File's Path 8&?kr/_Vr private String sFileName; //Saved File's Name )C>4?) private int nSplitter; //Count of Splited Downloading File &E98&[`7 _3_d;j#G U Yr9>ATR public SiteInfoBean() j#KL"B_A {//nSplitter的缺省值为5 V?KACYd@O //default value of nSplitter is 5 9rhIDA(wc this("","","",5); w]n ,`r^ } (#zSVtZ b-sbR R 5HWVK . public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) K.A!?U= { n,KOQI; sSiteURL= sURL; ?sF<L/P0
F sFilePath = sPath; Koh`|]N sFileName = sName; uc6;%=%+ this.nSplitter = nSpiltter; AiUICf?{ ?Bg<74 UzLe#3MU } We^!(G Rg/*)SKj o_un=ygU public String getSSiteURL() 1PwqWg-\\ { %lL^[`AR return sSiteURL; Bq}p]R3X } M,0@@: KEfn$\ B?}ZAw> public void setSSiteURL(String value) k M/cD` { x)'4u6;d sSiteURL = value; }=kf52Am,} } -49z.(@ki JaC
=\\B y@&Cn public String getSFilePath() rh;@|/<l { u&Ze$z return sFilePath; !ueyVE$1 } &w{""' kYxb@Zn=| M[wd.\
% public void setSFilePath(String value) &_Py{Cv@Dw { e}qG _* sFilePath = value; [UJC/GtjS } fV[(s7vW .]_Ye.} +8+@Az[e0 public String getSFileName() jR/YG
ru { sP1wO4M?{ return sFileName; \Y[ } #&+0hS "tuBfA+f ; aA,H& public void setSFileName(String value) ]fH U/% { mmC&xZ5f sFileName = value; ]<z4p'F1% } &m=Xg(G~c r81YL $+` YP public int getNSplitter() r3a$n$Qw { *%JncK' return nSplitter; S4RvWTtQV } }wmn v cr!6qv1 @WIcH:_w- public void setNSplitter(int nCount) w9D<^(_}/ { 7.4Q nSplitter = nCount; w3lR8R] } neW_mu;~Z } %GUu{n<6 !6_lD0 Kp")
%p# /* (g2?&b
iuz **Utility.java G)28#aH */ I(fq4$ package NetFox; @NMFurm ^p#f B4z 6
W/S?F~{ public class Utility { ;Ab`b1B XE]YKJ?|k =PXQX(_ public Utility() U krqHHpy { "oZ]/( EL+6u>\-k 8%s^>.rG } WN9< $ "[1yQ<p //线程睡眠 z)Xf6& public static void sleep(int nSecond) @/}{Trmg/ { Dt,b\6 try{ & f7 {3BK Thread.sleep(nSecond); R
}M'D15 } =jvM$ catch(Exception e) /sY(/ JE { =T5vu~[J/e e.printStackTrace (); +}c
'4hRv } 4,L( } IVD1mk Q!/<=95E //日志 dzDh V{ public static void log(String sMsg) I}/o`oc { Gv[W)+3f System.err.println(sMsg); 'Im7^!-d } ?(GMe> @AUx%:}0Y: xZjl_bJ public static void log(int sMsg) jR7 , b5 { qq}EXq ^ System.err.println(sMsg); vlCjh! x } a5WVDh,cR } DX.u"&Mm \dj&4u3 lJ@2N$w /* CBx 1.xL **TestMethod.java >nmby|XtW */ BMU}NZA package NetFox; kzr9-$eb ]kLs2? \ R`ajll1 public class TestMethod { TF 6_4t6 KquHc-fzqr "m +Eu|{ public TestMethod() N8(xz-6 { ///xx/weblogic60b2_win.exe Nj||^k try{ `*e',j2}UU SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); P(G$@},W //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); L*bUjR,C SiteFileFetch fileFetch = new SiteFileFetch(bean); fV*x2g7w fileFetch.start(); s]`&9{=E } I_.(&hMn catch(Exception e){e.printStackTrace ();} QQPbKok> BZEY^G I9N?zmH } 9Q-/Yh '-3AWBWI1 ]O',Ei^ public static void main(String[] args) XyJ*>;q { A/RHb^N new TestMethod(); <aa#OX } 4q[C'
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