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/* uUB%I 8 **SiteFileFetch.java ,
&f20o */ ~$obcW1 package NetFox; @wZ_VE7B import java.io.*; c{P`oB8 import java.net.*; ! yUKNR |#kf.kN 7i8qB462 public class SiteFileFetch extends Thread { IY6S\Gn JEkVj']? !@ '2 SiteInfoBean siteInfoBean = null; //文件信息Bean At|tk long[] nStartPos; //开始位置
%NoZf^? long[] nEndPos; //结束位置 };sm8P{M FileSplitterFetch[] fileSplitterFetch; //子线程对象 v0J1%{/xs long nFileLength; //文件长度 ^aoLry&i= boolean bFirst = true; //是否第一次取文件 @_nhA/rlc boolean bStop = false; //停止标志 LA Vgf> File tmpFile; //文件下载的临时信息 ![n`n(oN DataOutputStream output; //输出到文件的输出流 _n gMC]-T SSC!BcC1 //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) _kLoDju% public SiteFileFetch(SiteInfoBean bean) throws IOException VX%\_@ { &Wk<F3qN siteInfoBean = bean; #XPU$= //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); =Z$6+^L tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); (#Aq*2Z. if(tmpFile.exists ()) J[AgOUc { s3^SjZb bFirst = false; 9q{dRS[A read_nPos(); [J3;U6 } F,:VL*.5kJ else v83 6nxL M { 1OL~)X3 nStartPos = new long[bean.getNSplitter()]; \ed(<e> nEndPos = new long[bean.getNSplitter()]; :b-(@a7> } 3!x)LUWfWY 7 #N
@B 56dl;Z) n]!H,Q1,T } &y+eE?j WGn1pW ZC-N4ESr public void run() w6 .HvH-@? { >MH@FnUL //获得文件长度 V5MbWXgR //分割文件 L|?tcic //实例FileSplitterFetch \266N;JrN //启动FileSplitterFetch线程 ER+[gT1CQ //等待子线程返回 70~]J8T+u try{ N~(}?'y9S if(bFirst) z_)$g=9$ { CqV
\:50g nFileLength = getFileSize(); %h rR'*nG if(nFileLength == -1) &s5*akG { [<t*&Kr+o System.err.println("File Length is not known!"); QWEK;kUa@ } .v{ty else if(nFileLength == -2) S"l&=J2dc { RB2u1]l System.err.println("File is not access!"); cW\ 7yZh } uwJkqlUOz else \b->AXe8 { QPnc "! for(int i=0;i<nStartPos.length;i++) 4Ki'r&L\ { <V{BRRx nStartPos = (long)(i*(nFileLength/nStartPos.length)); s0CRrMk } Zh$Z$85p for(int i=0;i<nEndPos.length-1;i++) sQw-#f7t { )XFMlSx) nEndPos = nStartPos[i+1]; $8)/4P?OL } :([,vO: nEndPos[nEndPos.length-1] = nFileLength; Lfor0-j } W7 $yE},z } u|E,Wy1 4p]Y`];U M6>l%[ //启动子线程 a%kj)ah fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; PNq#o%q for(int i=0;i<nStartPos.length;i++) U4gZW]F { kI]1J fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 0)Z7U$ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), U
w)1yzX nStartPos,nEndPos,i); R)v`ZF,/b Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); lWR fileSplitterFetch.start(); kDrGl{U} } GC~::m~ // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), R9HRbVBJf siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ~vgW:]i // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", |R4]( nEndPos = " + nFileLength); ZISR]xay // fileSplitterFetch[nPos.length-1].start(); uQDu<@5^[ S"dQ@r9 \l`;]cA //等待子线程结束 q+ .=f.+Z //int count = 0; X@s s d //是否结束while循环 +1rJ ;G boolean breakWhile = false; *ULXJZ% ,PB?pp8C} _&T$0SZco while(!bStop) }.Ug`7%G { E^rN) write_nPos(); wL{Qni3A Utility.sleep(500); It4F;Ah breakWhile = true; - na]P3 s uJ%ql5XDV V/03m3!q for(int i=0;i<nStartPos.length;i++) d"V^^I)yx& { ;gF"o5/Q if(!fileSplitterFetch.bDownOver) %T&kK2d; { v>,XJ 7P breakWhile = false; 5EU3BVu&u break; 6K,AQ.=V2 } D =3NI } 'rSM6j if(breakWhile) ~ >6(@~6 break; f#!Ljjf$; CzwnmSv{. wy7f7zIa //count++; a{y;Ub //if(count>4) ETmfy}V8 // siteStop(); + 505 } G-Y8<mEh Baq&>] +] FdgmK: System.err.println("文件下载结束!"); NZv1dy`fa } 7r:!HmRl catch(Exception e){e.printStackTrace ();} /:B!hvpw } {`{U\w5Af 0PZpE
"$X JVN0];IL} //获得文件长度 0DGXMO$; public long getFileSize() X'O3)Yg { mzDbw-# int nFileLength = -1; V4_ZBeWA try{ <5=^s%H URL url = new URL(siteInfoBean.getSSiteURL()); c!b4Y4eJ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); &S/KR$^ % httpConnection.setRequestProperty("User-Agent","NetFox"); \:8
>@Q l7\Bq+Q G{)2f&< int responseCode=httpConnection.getResponseCode(); ttgb"Wb%S if(responseCode>=400) ca5Ir<mL { Ean
#>h processErrorCode(responseCode); CnN PziB return -2; //-2 represent access is error ;~F&b:CyG } 'V/+v#V+> F8KSB"!NR r761vtC# String sHeader; 4'[/gMUkw rjz$~(&m6 (}
?")$. for(int i=1;;i++) qi!+Ceo} { ,Tjc\;~% //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); o-c.D=~ //Utility.log(in.readLine()); t[ cHdI sHeader=httpConnection.getHeaderFieldKey(i); C8ek{o)%W if(sHeader!=null) B^nE^"b { c <Fr^8 if(sHeader.equals("Content-Length")) ~qT5F)$B- { dD ?ZF6 nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); J#ujI e break; m7!Mstu } aYW9C<5 } (l}W\iB'd else SJ8Ax_9{q break; ebfT%_N } }LeizbU } n<3qr}ZG^ catch(IOException e){e.printStackTrace ();} x4v@o?zW catch(Exception e){e.printStackTrace ();} VUmf;~ :J6 xYy$ gjFpM.D-. Utility.log(nFileLength); 2+s#5K&i "lLwgh; ?sD4S return nFileLength; /x q^]0xy } }ff+RGxLIG :<gC7UW rel_Z..~ //保存下载信息(文件指针位置) Zo`_vx/{j private void write_nPos() .7BJq?K. { 4Dy|YH$>S try{ ANWfRtiU# output = new DataOutputStream(new FileOutputStream(tmpFile)); z|bAZKSRYx output.writeInt(nStartPos.length); QlE]OAdB42 for(int i=0;i<nStartPos.length;i++) ` {/"?s| { uo9FLm // output.writeLong(nPos); Zz/
z7~{ output.writeLong(fileSplitterFetch.nStartPos); t03X/%H output.writeLong(fileSplitterFetch.nEndPos); BD,J4xH; } gx9=L&=d output.close(); `NySTd)\ } CFXr=.yz catch(IOException e){e.printStackTrace ();} ,J(shc_F catch(Exception e){e.printStackTrace ();} L8,/ } TrPw*4h 9s \&/V p` "O~7s} //读取保存的下载信息(文件指针位置) zb3,2D+P private void read_nPos() 8'qq!WR~ { +\-cf,WkI try{ [nA1WFfM DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); (T!#7 int nCount = input.readInt(); mor[AJ nStartPos = new long[nCount]; XM f>B| nEndPos = new long[nCount]; T*z*x=<5 for(int i=0;i<nStartPos.length;i++) ~jJF&*) { |@5G\N - nStartPos = input.readLong(); m<sCRWa- nEndPos = input.readLong(); )=nB32~J" } ZZ>F ^t input.close(); <&kl:| } ";jKTk7 catch(IOException e){e.printStackTrace ();} MbxJ3"@ catch(Exception e){e.printStackTrace ();} k%R(Qga } |G)P
I`BH v:"Y :28[k~.bo private void processErrorCode(int nErrorCode)
RK/>5 { rn]F97v@] System.err.println("Error Code : " + nErrorCode); O{p7I& } lWDSF]ZYV iD.p KG Z.`0 //停止文件下载 K5 EJ#1ov public void siteStop() `(r0+Qx { >9y!M'V bStop = true; Bk]
`n'W for(int i=0;i<nStartPos.length;i++) @^%YOorr fileSplitterFetch.splitterStop(); m2HO .ljc BoXPX2: cv;2zq=T } 1:RK~_E } f\FqZ?w //负责部分文件的抓取 Z+=WICI/2 **FileSplitterFetch.java ;{Yr| */ XZ2 ji_D package NetFox; E5?$=cL? 7Y)i>[u3 Tv `& import java.io.*; Fr-Vq=j& import java.net.*; 7[0<,O6Q ~R\ $Z pd|l&xvka public class FileSplitterFetch extends Thread { Q9c*I,Oj ?4# nchpD@'t String sURL; //File URL mKoDy`s long nStartPos; //File Snippet Start Position lk[u long nEndPos; //File Snippet End Position .$1S-+(kV int nThreadID; //Thread's ID t>Yl=79, boolean bDownOver = false; //Downing is over 4&%E?_M boolean bStop = false; //Stop identical 'J)9# FileAccessI fileAccessI = null; //File Access interface G5lBCm XtE O ) $KBW{ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException YV'B*arIA { F$'po# this.sURL = sURL; -c{ Y+M` this.nStartPos = nStart; k@pEs# a this.nEndPos = nEnd; p&\DG nThreadID = id; X5(oL fileAccessI = new FileAccessI(sName,nStartPos);//定位 VF +g+~ } ^F-2tc \9~Q+~@{G b!`6s public void run() n<F3&2w { 7V5kYYR^F while(nStartPos < nEndPos && !bStop) /`t}5U>S_ { 8Pva ]Q 6W~JM^F GnCs_[*&r try{ +U>Y.YP URL url = new URL(sURL); 9ph>4u(R HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); i2-]Xl httpConnection.setRequestProperty("User-Agent","NetFox"); mRt/d String sProperty = "bytes="+nStartPos+"-"; m|;gl|dTB httpConnection.setRequestProperty("RANGE",sProperty); -=n!k^?lK Utility.log(sProperty); ] VEc9? @i#=1)Ze LMN`<R(q] InputStream input = httpConnection.getInputStream(); 1;!dTh //logResponseHead(httpConnection); &i6JBZ#~, R?dMM vst;G-ys byte[] b = new byte[1024]; ScQ9p379 int nRead; e&K7n@ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) jw/@]f;N { |h&okR+_, nStartPos += fileAccessI.write(b,0,nRead); Bsk` e //if(nThreadID == 1) b(adM3MP // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); #Fgybokm } vg1E@rH|} jF(R;?, P,#l~ \ Utility.log("Thread " + nThreadID + " is over!"); K;`W4:, bDownOver = true; b/tcD r //nPos = fileAccessI.write (b,0,nRead); iQgr8[
SFf } tVNFulcz$ catch(Exception e){e.printStackTrace ();} aU$8 0 } .3wx}!:*| } I9nm$,i]7 Moi>Dp dsK*YY jH //打印回应的头信息 '#yIcV$ public void logResponseHead(HttpURLConnection con) X|4Kdi.r@ { [(vV45(E for(int i=1;;i++) W@+ge]9m& { c0_512 String header=con.getHeaderFieldKey(i); .$+,Y4q~( if(header!=null) d6zq,x!cI //responseHeaders.put(header,httpConnection.getHeaderField(header)); TXbi>t:/S{ Utility.log(header+" : "+con.getHeaderField(header)); j*~z.Q | else f%P#. break; 0}e&ONDQ } jS|jPk|I. } 4KW_#d`t R[#B|$ 0OnqKgf public void splitterStop() ZfS" { /<J5?H bStop = true; eMP0BS" } #9A*B bY %4/X;w\3 q 1A0-W#4 } ApcE)mjpc @[5] ?8\o H.O&seY /* }To-c' **FileAccess.java j k])S~xl? *//文件访问(定位,写) J$(79gH{ package NetFox; 2W/*1K} import java.io.*; }9Q<<a 9 vNz
yh\ WaiM\h?=# public class FileAccessI implements Serializable{ QD
0p b\xse2# //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节
U.ew6`'Te RandomAccessFile oSavedFile; 1Nz#,IdQ long nPos; F[X;A\ 1R#1Fy% :ZXaJ! public FileAccessI() throws IOException |W SvAM3 { KPa@~rU this("",0); 1+ V<-I@{ } sw,p6T[ ?cD_\~ W"s)s public FileAccessI(String sName,long nPos) throws IOException Z}>+!Z { KwxJ{$|xH oSavedFile = new RandomAccessFile(sName,"rw"); t k+t3+ this.nPos = nPos; vARZwIu^D oSavedFile.seek(nPos); :(4];Va } l,
-q:8 px^brzLQo Rm@F9D[, public synchronized int write(byte[] b,int nStart,int nLen) Hnbd<?y
{ DjiWg(X int n = -1; ZRC7j?ui8` try{ <-!'V,c oSavedFile.write(b,nStart,nLen); :;o?d&C n = nLen; p5bM/{DP;K } <##aD3) catch(IOException e) R-\"^BV#Z { >V@,K z1 e.printStackTrace (); /O$)m[ } t\lx*_lr o6S`7uwJ*/ lDG.\u return n; Z
DnAzAR } |bjLmGb jHc/ EZB 4?~Ei[KgQn } eRIdN(pP liVDBbS_A? Y\{lQMCy /* 1)!]zV **SiteInfoBean.java DZX4c 2J */ /Pa<I^-# package NetFox; s_`y"'^ zuBfkW95+ .t{?doOT public class SiteInfoBean { ~Nl`Zmn(A| +,bgOq\aG IV$2`)[A&X private String sSiteURL; //Site's URL (OHd} YQ private String sFilePath; //Saved File's Path m{0u+obi&w private String sFileName; //Saved File's Name C,3yu,' private int nSplitter; //Count of Splited Downloading File JLV?n,nF w7h=vy n? |b)N;t public SiteInfoBean() ^ px)W,O {//nSplitter的缺省值为5 }ilX
2s?> //default value of nSplitter is 5 M.}QXta this("","","",5); {,i='!WIm } $6\W8v c)=UX_S! IctLhYZ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 6c&OR2HGqO { cOEzS sSiteURL= sURL; (ZuV5|N sFilePath = sPath; JZrUl^8E sFileName = sName; U*em)/9 this.nSplitter = nSpiltter; sR*JU% M;qV%
k {v}jV{'^um } j<*`?V^ _7w2E
) XHcrm& public String getSSiteURL() J'y*>dW { H0i\#)Xs return sSiteURL; U9p^?\-= } T?E[LzZg @Ao E> S~DY1e54GF public void setSSiteURL(String value) A'X, zw^} { ss>?fyA sSiteURL = value; m=2e1wc } bwAL: XS/5y(W +bK.{1 public String getSFilePath() %S<( z5 { /1q] D8 return sFilePath; cZ~\jpK } $R<eXDW6: =F}e>D
lCyp&b#(L public void setSFilePath(String value) oWUDTio#[ { 8W_X&X?Q sFilePath = value; Sm%MoFf } e?D,=A4mV" %7?v='s=
8Cr?0Z public String getSFileName() aJ Du_ { r8~U@$BBK return sFileName; lFY;O !Y5\ } []M+(8Z_P g3%t+>$* Yg#)@L public void setSFileName(String value) 7M1*SC { z
{J1pH_X sFileName = value; ^ffh } FBPT@`~v &~Q ?k O"mU#3? public int getNSplitter() [J+K4o8L<A { QE5
85s5
return nSplitter; ";e0-t6: } EQ>bwEG D] 2+<;>`> ^dP@QMly6 public void setNSplitter(int nCount) I=^%l7 { p$@=N6)I.k nSplitter = nCount; l(zkMR$b8 } }~-)31e'` } TR@$$RrU ,Ql3RO, );;UNO21+ /* 9#6ilF:F **Utility.java {\ziy4<II */ a@,tf'Sr package NetFox; AJ:@c7:eS $YaL3n {M E|7TS= public class Utility { N
&p=4 rf1nC$Sop n]coqJ public Utility() Yjk A^e { xYt{= 9LJ/m\bi ^"+cJ) } P!YT{} WM=kr$/3 //线程睡眠 N??<3j+Iu public static void sleep(int nSecond) W {dx\+ { pdnL~sv try{ #^#)OQq] Thread.sleep(nSecond); /'VCJjzZ } N}FG%a catch(Exception e) !8=uBS% { xI:;%5{LN e.printStackTrace (); \wDOE(> } 6u:5]e8 } QTn-n)AE n{'
[[2U //日志 ={L:q8v) public static void log(String sMsg) c@nl;u)n { MB "?^~Sm System.err.println(sMsg); =C3l:pGMB; } cF vGpZ bh7 1Zu T.`%1S public static void log(int sMsg) 3UN Jj&-` { A<.Q&4jb System.err.println(sMsg);
0U/:Tpyr } BxZop.zwE( } q75F^AvH ?pF;{ `chf8 /* f1~3y}7^Jq **TestMethod.java WX\%FJ */ ReK@~#hLY package NetFox; SpkVV/ J<`RlDI zA"D0fr public class TestMethod { A|>C3S |t]9RC.;7 nL:vRJr-$ public TestMethod() D{l.WlA. { ///xx/weblogic60b2_win.exe HRb_ZJz try{ >6kWmXK[ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); -91l"sI //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); Qs?+vk?*h SiteFileFetch fileFetch = new SiteFileFetch(bean); v;RQVH;, fileFetch.start(); H_AV 3
; } #/tdZ0 catch(Exception e){e.printStackTrace ();} .nSupTyG C3b'Q _+Q$h4t
} Cir =( eY(usK %&]}P;& public static void main(String[] args) fN4pG*D { {//F>5~[ new TestMethod(); $@Ay0GEI" } 7YN)T? } Z~,.l
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