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/* HYtkSsXLN **SiteFileFetch.java ^ c:(HUo# */ \jC}>9 package NetFox; 4Vt YR import java.io.*; mI l_
[ import java.net.*; yfq"atj 0L|A %lvSO/F+ public class SiteFileFetch extends Thread { hhwV)Z d6_ CsqV F3+)bIz SiteInfoBean siteInfoBean = null; //文件信息Bean nU/v(lN long[] nStartPos; //开始位置 zd+8fP/UB long[] nEndPos; //结束位置 W8\K_M} FileSplitterFetch[] fileSplitterFetch; //子线程对象 "8s0~[6S long nFileLength; //文件长度 *.20YruU;j boolean bFirst = true; //是否第一次取文件 -O{Af boolean bStop = false; //停止标志 =3sBWDB[ File tmpFile; //文件下载的临时信息 &K}!R$[,:P DataOutputStream output; //输出到文件的输出流 #Ez>]`]TB ms<?BgCSz //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ,!c. public SiteFileFetch(SiteInfoBean bean) throws IOException 8K{
TRPy { 5pz%DhjLo siteInfoBean = bean; 4e9mN~ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); @HR]b^2E tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); \4mw>8wA if(tmpFile.exists ()) i_V~SC` { 55fV\3F|R bFirst = false; C^.:{ read_nPos(); R5qC;_0cV } "GgK,d}% else MOdodyG { 3:!+B=woR nStartPos = new long[bean.getNSplitter()]; \6*3&p nEndPos = new long[bean.getNSplitter()]; nx=Zl:Q} } 3nxJ`W5j Hw_(Af?C >lRX+? T0v;8Ee } u3Ua>A-
&+u$96 x# 0(CcKK public void run() GV * B$ { ?> }bg //获得文件长度 rj<r6 //分割文件
Kt9:V, //实例FileSplitterFetch On#RYy^} //启动FileSplitterFetch线程 q*,];j/>k //等待子线程返回 YcT!`B try{ &ciU`//` if(bFirst) ]k5l]JB { 8I3"68c_a nFileLength = getFileSize(); <S%M*j if(nFileLength == -1) -Y{P"!p0 { nUD)G<v System.err.println("File Length is not known!"); d0eMDIm3R\ } | x/, else if(nFileLength == -2) $Ic:
c { l}># p'$ System.err.println("File is not access!"); Y;4nIWe
JL } >#<o7] else fHdPav f,S { )EcE{!H6+ for(int i=0;i<nStartPos.length;i++) Ag^Cb'3X { z`]'~ nStartPos = (long)(i*(nFileLength/nStartPos.length)); Yu`b[]W } t L}i%7 for(int i=0;i<nEndPos.length-1;i++) Y&'Bl$` { 4#!NVI3t nEndPos = nStartPos[i+1]; 5Z,^46J } W/OZ}ky}^ nEndPos[nEndPos.length-1] = nFileLength; ](vOH#E }
Q47Rriw } +v{<< @;!s"!~sv "JT R5;`w //启动子线程 ggIz)</ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; uAwT)km
{ for(int i=0;i<nStartPos.length;i++) );'8*e' { C AVqjT7 fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), fE8/tx]( siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), iZyhj%# nStartPos,nEndPos,i); LcI,Dy|P Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 76(-!Z@=J fileSplitterFetch.start(); TU&gj1 } 17
Hdj // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), O|}97a^ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 8(&Jy RT // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", icOh/G=N; nEndPos = " + nFileLength); =Wn11JGh // fileSplitterFetch[nPos.length-1].start(); be}^}w= WgF
Xv@Jjt h/W@R_Y //等待子线程结束 wz3BtCx //int count = 0; Ox#%Dm2 //是否结束while循环 ^&>(_I\w.6 boolean breakWhile = false; UEbRg =6 RBd{1on +q[puFfl while(!bStop) ;9MsV.n { OQIQ write_nPos(); bsO78a~=P Utility.sleep(500); v,#*%Gn`% breakWhile = true; =yJJq=! >vF=}1_L A
M8bem~ for(int i=0;i<nStartPos.length;i++) B[w~bW|K { p)NhV if(!fileSplitterFetch.bDownOver) WLqwntzk { %{Ez0XwGCn breakWhile = false; S7vT= break; df; -E } u2,V34b- }
Gqvj if(breakWhile) l6IpyIex break; maW,YOyRN Nz %{T ~ x-
R78' //count++; ;& ny< gQ //if(count>4) M[Lj N // siteStop(); z'GYU= } B/hL N,6(|,m
$\h\,N$y System.err.println("文件下载结束!"); zcnp?% } ^W+q!pYM9+ catch(Exception e){e.printStackTrace ();} ="hh=x.5J } fS+Ga1CsH =QXLr+
y@ bq{":[a //获得文件长度 %9B r public long getFileSize() E(N?.i-%$ { `&xo;Vnc int nFileLength = -1; vs}_1o try{ B/u0^! URL url = new URL(siteInfoBean.getSSiteURL()); 2YI#J.6]H HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); r*CI6yP httpConnection.setRequestProperty("User-Agent","NetFox"); AdMA|!|:hc \}[{q jp?;8rS3 int responseCode=httpConnection.getResponseCode(); *<Yn if(responseCode>=400) /<,LM8n { @LZ'Qc
}@ processErrorCode(responseCode); OCIWQ/
P return -2; //-2 represent access is error Vf<VKP[9K } !.9pV.~ }#va#Nb(, #-?C{$2I String sHeader; 0]%0wbY1 X=$WsfN.h UZ#Yd|'PD for(int i=1;;i++) 0*0]RC5? { p(dJf&D //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); *;b.x" //Utility.log(in.readLine()); z9OhY]PPF sHeader=httpConnection.getHeaderFieldKey(i); )bN|*Bw3 if(sHeader!=null) ) inhPd { ;T6{J[
h if(sHeader.equals("Content-Length")) U"\$k& { )pELCk nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 6apK]PT break; `D)ay } ernZfd{H } ')ZxWYT
O^ else $=?1>zvF break; ".aypD)W } Teq1VK3Hr } CFdR4vuEI catch(IOException e){e.printStackTrace ();} a![x^@nF catch(Exception e){e.printStackTrace ();} =xzDpn>f d67Q@')00 ]XX9.Xh=- Utility.log(nFileLength); 6~g`B<(? c|?0iN v[4A_WjT return nFileLength; $qOV#,@ } IoUQ~JviA 6b&<5,=d: m]LR4V6k| //保存下载信息(文件指针位置) "o.V`Bj private void write_nPos() {@j0?s { N0APX4j try{ .
!gkJ output = new DataOutputStream(new FileOutputStream(tmpFile)); LS1r}cl output.writeInt(nStartPos.length); 5cLq6[uO for(int i=0;i<nStartPos.length;i++) / O@'XWW { !J<}=G5 // output.writeLong(nPos); {c5%.<O output.writeLong(fileSplitterFetch.nStartPos); m?LnO5Vs output.writeLong(fileSplitterFetch.nEndPos); `@. } 29eg.E output.close(); Z(g9rz']0 } Fh t$7V catch(IOException e){e.printStackTrace ();} Z#H] yG catch(Exception e){e.printStackTrace ();} q:2V w`g' } 9v[cy` \ cTpmklq t\YN\`XD //读取保存的下载信息(文件指针位置) d:KUJ
Y. private void read_nPos() .1F(-mLd { xRum q try{ UG)J4ZX DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); zQY|=4NP int nCount = input.readInt(); N~I2~f nStartPos = new long[nCount]; Qn`$xY9mT nEndPos = new long[nCount]; iaShxoIV for(int i=0;i<nStartPos.length;i++) yL =*yC { ]WZ_~8 nStartPos = input.readLong(); Ml &Cr nEndPos = input.readLong(); #=6A[<qX } 8&?kr/_Vr input.close(); nsO! } ~3p
:jEM.[ catch(IOException e){e.printStackTrace ();} r8PXdNg catch(Exception e){e.printStackTrace ();} ;uw`6 KJ } wk
@-O}W eK]g FXk M#v#3:&5 private void processErrorCode(int nErrorCode) gcLwQ- { MD ETAd System.err.println("Error Code : " + nErrorCode); m e\S: } G)qNu } +<cvyg5U 8NY$Iw //停止文件下载 9rhIDA(wc public void siteStop() m~KGB" { w]n ,`r^ bStop = true; %3v:c|r for(int i=0;i<nStartPos.length;i++) {P'TtlEp fileSplitterFetch.splitterStop(); tnx)_f 'k|?M 3&*_5<t\X } "YIrqk } \;"$Z9W //负责部分文件的抓取 Bvbv~7g( **FileSplitterFetch.java i1ph{;C */ &V.ps1 package NetFox; F_8<
tA6 .}KY*y +(>!nsf import java.io.*;
5p9zl=mT import java.net.*; 8<cD+Jtj *eE&ptx1 Obl']Hr{y9 public class FileSplitterFetch extends Thread { :]?y,e%xu, RRYm.dMIw `o7m)T') String sURL; //File URL 8<z]rLQw?% long nStartPos; //File Snippet Start Position }(}+I}&~ long nEndPos; //File Snippet End Position 6U{&`8C int nThreadID; //Thread's ID IfyyA boolean bDownOver = false; //Downing is over <@;Y.76~ boolean bStop = false; //Stop identical Rg/*)SKj FileAccessI fileAccessI = null; //File Access interface :H}a/ x*ur 6.]x@=Wm kbij Zj{ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 3hzI6otKS { Q/e$Ttt4J this.sURL = sURL; 5)=XzO0 this.nStartPos = nStart; Z4eu'.r-y~ this.nEndPos = nEnd; hY5G=nbO* nThreadID = id; VUfV=&D-*g fileAccessI = new FileAccessI(sName,nStartPos);//定位 3Q-i%7l } oBVYgv) aBV{Xr~#( %m\dNUz4g public void run() ,^dyS]!d$ { SoS GQ&k while(nStartPos < nEndPos && !bStop) $6p_`LD0 { n0o'ns /.leY$ 99T_y`df try{ WdXi URL url = new URL(sURL); C %l!"s^ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); y 1DP`Ro httpConnection.setRequestProperty("User-Agent","NetFox"); f< A@D"m/ String sProperty = "bytes="+nStartPos+"-"; /mELnJ^ httpConnection.setRequestProperty("RANGE",sProperty); yFfa/d Utility.log(sProperty); fX)C8J^=G cO$
PK wKe$(>d"L InputStream input = httpConnection.getInputStream(); M[wd.\
% //logResponseHead(httpConnection); Q}G'=Q]Juz e}qG _* [UJC/GtjS byte[] b = new byte[1024]; .r~!d| int nRead; .]_Ye.} while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) U1&pcwP { ;F)gr nStartPos += fileAccessI.write(b,0,nRead); 'jv[Gcss3L //if(nThreadID == 1) sP1wO4M?{ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); n-q } \Y[ $4yv)6G #&+0hS Utility.log("Thread " + nThreadID + " is over!"); 0>#or$:6E bDownOver = true;
x Bn+-V //nPos = fileAccessI.write (b,0,nRead); Qz*!jwg } |RUx)& catch(Exception e){e.printStackTrace ();} u(ep$>[F#_ } ]lj,GD)c } -eKi}e FI,>v` P19nF[A //打印回应的头信息 E|u#W3-: public void logResponseHead(HttpURLConnection con) ~GL"s6C$`; { $ t' . for(int i=1;;i++) &V;^xMO! { 8nOMyNpy~M String header=con.getHeaderFieldKey(i); N 3IF j if(header!=null) |%JJ
S^) //responseHeaders.put(header,httpConnection.getHeaderField(header)); 5@3[t`n' Utility.log(header+" : "+con.getHeaderField(header)); #BQ7rF7CNE else +dWx?$n break; K\5'pp1 } : `D[0 } m&)5QX L(tA~Z"k _=RA-qZ" public void splitterStop() r&AX { =2HR+ bStop = true; odxsF(Q0p } M{Ss?G4H J8|F8dcz 2UYtFWB9o } F,0@z/8a >sAZT:&gv sjOyg!e /* tB"amv **FileAccess.java ZKKz?reM' *//文件访问(定位,写) C`F*00M{ package NetFox; fuM+{1}/E import java.io.*; MS{purD -^=sxi,V 8D[8(5 public class FileAccessI implements Serializable{ Jd_w:H. h>v;1QO9D //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 :O:Rfmr~ RandomAccessFile oSavedFile; /s.O3x._' long nPos; 4^1B'>I @fR^":.h uPk`9c52% public FileAccessI() throws IOException XGE:ZVpW { tqLn A this("",0); @NMFurm } p"4i(CWGS k$</7IuH fI"q/+ public FileAccessI(String sName,long nPos) throws IOException b#h?O} { Uq/#\7/rL oSavedFile = new RandomAccessFile(sName,"rw"); !4uTi [e this.nPos = nPos; f(.@]eu
X oSavedFile.seek(nPos); reml|!F-) } Sfc0 ~1 wCiDvHF5+C srfFJX7* public synchronized int write(byte[] b,int nStart,int nLen) .5+*,+- { ND[u$N+5x" int n = -1; m%ZJp7C try{ J_tj9+r^ oSavedFile.write(b,nStart,nLen); D*+uH;ws n = nLen; "@!z+x[8 } XHuY'\;- catch(IOException e) ]@OGp:Hz { n*-t
=DF e.printStackTrace (); T^h;T{H2 } bX#IE[Yp} O/\ L0\T $3BCA)5: return n; R
}M'D15 } =jvM$ /sY(/ JE =T5vu~[J/e } UF)rBAv(/ Zd@'s.,J LO@.aJpp
/* xq_%|p}y **SiteInfoBean.java hNB;29r~ */ .$b]rx7$~ package NetFox; e*_8B2da lcgT9m# 96;17h$ public class SiteInfoBean { xQ4D| & Tj@}O:q7: GF5WR e(E private String sSiteURL; //Site's URL !=C4=xv private String sFilePath; //Saved File's Path <)y44x|S' private String sFileName; //Saved File's Name (g,lDU[= private int nSplitter; //Count of Splited Downloading File Q\G8R^9j p Izq]nR "6/` public SiteInfoBean() !}wJ+R ^2 {//nSplitter的缺省值为5 0S@O]k) //default value of nSplitter is 5 d;&'uiS this("","","",5); g~_cYy } 24{!j[,q@ f !t2a// F\!;}z public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) =W)Fa6P3j( { hGi"=Oud2 sSiteURL= sURL; MfUG@ sFilePath = sPath; K[Rl R+j sFileName = sName; xP3_ this.nSplitter = nSpiltter; S/-[OA>N b Jt397 !cnun Lc` } RWmQP%A}aw 8[(eV. E>Ukxi1 public String getSSiteURL() )t={+^Xe { KL]K< A return sSiteURL; jLC,<V* } P<GY"W+rR TF 6_4t6 %Qc#v$;+J public void setSSiteURL(String value) KquHc-fzqr { ^7v}wpwX\ sSiteURL = value; "m +Eu|{ } /b,+YyWi% XNwY\y aNb=gjLpt public String getSFilePath() M= !Fb { Mt)~:V+: return sFilePath; 8'J>@ uW } #(3w6l2 &
Sy0Of rb%P30qc4 public void setSFilePath(String value) 3:jKuOX { A<^IG+Q,B7 sFilePath = value; %Rv&VFg } BDZB;DPb eKn&`\j6 %)*!(%\S*3 public String getSFileName() b_-ESs]g { +<6L>ZAL return sFileName; E&V"z^qs_ } ~PaD _W#xP pI7\]e e8gJ }8Fj public void setSFileName(String value) $s.:wc^ { _Hi;Y sFileName = value; '-3AWBWI1 } !> b>"\b i`7{q~d= iaXNf
])? public int getNSplitter() XyJ*>;q { le yhiL< return nSplitter; CJg & } }MY7<sMDOy #T
Cz$_=t z=<T[Uy public void setNSplitter(int nCount) a#FkoA~M { E+V^5Z:u nSplitter = nCount; rklr^ e } 3;~1rw=$< } 9Am&G 4IG=mG) >x@]wsj /* W%b<(T;
**Utility.java %1SA!1>j */ aq~hl7MTj package NetFox; 8#'<SB hXM8`iFW5 -h^FSW($-R public class Utility { )v;>6( ('Wo#3b$ )u ]J`.OA public Utility() 4>>{}c!nf { '|&}rLr:+ w{)*'8oCB UBqA[9 } hLG UkG?6G ]B=B@UO@. //线程睡眠 <(`dU&&%"} public static void sleep(int nSecond) )5gcLD/zI { |\@e try{ 6kGIO$xJ) Thread.sleep(nSecond); 5+rYk|*D+k } 5tHv'@ catch(Exception e) 'IBs/9=ZC { Dk|S`3 e.printStackTrace (); (~xFd^W9o } cy7GiB2' } Tk$rwTCl !I]fNTv< //日志 W=}l=o!G. public static void log(String sMsg) f'F:U^ { 5p"n g8nR System.err.println(sMsg); xr?=gY3E; } 5 g99t$p9 GZ/.eYE vmJ1-<G4* public static void log(int sMsg) ~6.AE/ow { >Mj :' System.err.println(sMsg); En8-Hc#NC } qqT6C%Q`kG } hD{+V!{ 6[wej$u ~[Mk QJxe /* (ZQ{%-i?qR **TestMethod.java kU_bLC?>D */ E:xpma1Qf package NetFox; nf+8OH7 }cgEC- )52:@=h*l public class TestMethod { )XMSQ ="m ps"crV-W cKh { s public TestMethod()
f<9H#S: { ///xx/weblogic60b2_win.exe Sd'
uXX@ try{ _7~O>. SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); :-.R*W //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); |!8[Vg^Wh SiteFileFetch fileFetch = new SiteFileFetch(bean); jC
,foqL fileFetch.start(); wfM$JYfI } @!'Pr$` catch(Exception e){e.printStackTrace ();} N\=pH{ 5!}xl9D :y !e6 } |4YDvDEJi :N\*;> !cE>L~cza public static void main(String[] args) kLR4?tX! { @YdS_W new TestMethod(); .a:"B\B` } \E9Z
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