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/* z>#$#:Z4 **SiteFileFetch.java *VAi!3Rx; */ "@bk$o= package NetFox; b<MMli import java.io.*; os+wTUR^ import java.net.*; dKG<" j>=".^J b8Ad*f\ public class SiteFileFetch extends Thread { `l@t3/ h.%Qn vL : .eS| SiteInfoBean siteInfoBean = null; //文件信息Bean *J-jr8& long[] nStartPos; //开始位置 ::t!W7W long[] nEndPos; //结束位置 PU\q.y0R FileSplitterFetch[] fileSplitterFetch; //子线程对象 #!<s& f|O long nFileLength; //文件长度 TV2:5@33 boolean bFirst = true; //是否第一次取文件 a.ME{:a% boolean bStop = false; //停止标志 nsn,8a38 File tmpFile; //文件下载的临时信息 g)Uh
DataOutputStream output; //输出到文件的输出流 V#FLxITk +PD5pr //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) XX;%:?n public SiteFileFetch(SiteInfoBean bean) throws IOException rV{e[fGd { N1+]3kt ~ siteInfoBean = bean; G4]`` //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ?["ZEa tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); unB "dE if(tmpFile.exists ()) XX+rf { 'Pn`V{a bFirst = false; UzRF'<TWf read_nPos(); v:ZD}Q_ } Lg53
Ms% else Zz ?y&T { x@x@0k`A2 nStartPos = new long[bean.getNSplitter()]; :\cJvm nEndPos = new long[bean.getNSplitter()]; [r~lO@ } 4iPg_+ {=Y&q~:8v CF4y$aC# 7m$/.\5 } e1a %Rj~ U%olH >1K [C#pMLp,~ public void run() =1uI >[aN { n*|-"'j //获得文件长度 Fs~-exY1 //分割文件 "R]K!GUU //实例FileSplitterFetch `hhG^O_ //启动FileSplitterFetch线程 u-<s@^YG //等待子线程返回 L~zet-3UNf try{ J)+eEmrU if(bFirst) +d15a%^` { !pXz-hxKT nFileLength = getFileSize(); (\_d'Js(; if(nFileLength == -1) r
+fzmb { 3sNq3I System.err.println("File Length is not known!"); [\p0eUog/ } hWJc
A.A else if(nFileLength == -2) N:zSJW`1 { 1 ErYob.p System.err.println("File is not access!"); y->iv% } h Nwb.[ else %dQX d] { w,$1 7+]3 for(int i=0;i<nStartPos.length;i++) @
vudeaup { S^.=j
oI nStartPos = (long)(i*(nFileLength/nStartPos.length)); YEj U3^@ } 'LI)6;Yc for(int i=0;i<nEndPos.length-1;i++) Plv+ mb { w9BH>56/" nEndPos = nStartPos[i+1]; h)8_sC } ^6n]@4P nEndPos[nEndPos.length-1] = nFileLength; cPYQ<Y= } lUz@Em } Li^V?
XDQ1gg` `z.#O\@o //启动子线程 _XtY/7n fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; <k1gc,* for(int i=0;i<nStartPos.length;i++) 4 n(
f/ { %mJ)pMV fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), T@XiG:b7 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 4#uoPkLK nStartPos,nEndPos,i); o%iTYR:x Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); !{LwX Kf fileSplitterFetch.start(); PGDlSB^O } k[m-"I%ZFX // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), #Ba'k6b siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Y_B(R // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", j.*}W4`Q_ nEndPos = " + nFileLength); G_@H:4$3 // fileSplitterFetch[nPos.length-1].start(); \~>#<@h UK/k?0 C09@2M' //等待子线程结束 d0d2QRX //int count = 0; YVi]f2F% //是否结束while循环 AnQRSB ( boolean breakWhile = false; #e[5O|V~ P[~a'u MaM7u:kD# while(!bStop) *,u{~(thR { n_j[hA write_nPos(); }ls>~uN Utility.sleep(500); .u&g2Y breakWhile = true; 5q[@N J N 2\,6 < Q]C1m<x for(int i=0;i<nStartPos.length;i++) ijfT!W { K[H$qJmPX if(!fileSplitterFetch.bDownOver) Hl51R"8o { R !HL+ breakWhile = false; j~0hAKHG break; z#b6 aP } d!cx%[ } li?Gb1 if(breakWhile) GzX@Av$ break; S6uBk"V! O #"O.GX< $o z
ZFvJF //count++; VPuzu| //if(count>4) \}5\^&}_ // siteStop(); Wk?XlCj } ZZUCwczI uWSG+ (Y86q\DQ?| System.err.println("文件下载结束!"); fsu'W]f } ]v#Q\Q8> catch(Exception e){e.printStackTrace ();} mb/Y } tfO
_b5g .+.Pc_fv Im2g2] //获得文件长度 ]4PG[9J@ public long getFileSize() 0T*jv! q> { w$_ooQ(_;Q int nFileLength = -1; BTB,a$P/ try{ 6k-]2,\# URL url = new URL(siteInfoBean.getSSiteURL()); n:{yri+ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); \VW.>@s~ httpConnection.setRequestProperty("User-Agent","NetFox"); \%#jT GFs~ ;,D7VxWhY \I>,j,c int responseCode=httpConnection.getResponseCode(); YB[P`Muj if(responseCode>=400) LS;kq', { Y) Z>Bi processErrorCode(responseCode); };|'8'5 return -2; //-2 represent access is error *ZHk^d: } 0z.& 7ORwDR,`5 B; ~T|ex u String sHeader; z[B7k%} fE >FT9c `#~@f!'; for(int i=1;;i++) 7J)-WXk { >PTq5pk //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); =d9%ce //Utility.log(in.readLine()); J?{uG8) sHeader=httpConnection.getHeaderFieldKey(i); ?U&onGy if(sHeader!=null) Xa36O5$4]9 { j&F&wRD%r if(sHeader.equals("Content-Length")) 'n\ZmG{ { l ^{]pD nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); u >x2 break; R]dc(D } 3.soCyxmc } sf%=q$z else C)`/Q( ^ break; M
C>{I3 } L_/.b%0) } Mb-C DPT catch(IOException e){e.printStackTrace ();} tUzuel* catch(Exception e){e.printStackTrace ();} 3N?uY2 #+XKfumLk Yk }zN_v Utility.log(nFileLength); I;=}@]9 Da.v yp
uu HWN| return nFileLength; 3?C$Tl2G8 } >LLFe~9`g qr:[y s:M:Ff //保存下载信息(文件指针位置) H}A67J9x private void write_nPos() Oa{M9d,l { 'EXp[* try{ I\":L output = new DataOutputStream(new FileOutputStream(tmpFile)); kIQMIL0+ output.writeInt(nStartPos.length); Xf:-K(%e for(int i=0;i<nStartPos.length;i++) }ZV$_ { 4!D!.t~r // output.writeLong(nPos); o)w'w34FCT output.writeLong(fileSplitterFetch.nStartPos); {jbOcx$t output.writeLong(fileSplitterFetch.nEndPos); =VDN9-/. } M^H357r% output.close(); (ue;O~ } /6g*WX2P1 catch(IOException e){e.printStackTrace ();} 5<9}{X+@o catch(Exception e){e.printStackTrace ();} ?'^xO: } oA`Ncu5 azN<]u@. LFtnSB8 //读取保存的下载信息(文件指针位置) N"T+.
r private void read_nPos() hD
sFsG { 6*CvRb& try{ 2: fSn&*/> DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); (T,ST3{*k int nCount = input.readInt(); IU&n!5d$)| nStartPos = new long[nCount]; pX"f " nEndPos = new long[nCount]; s %/3X\_ for(int i=0;i<nStartPos.length;i++) y "gYv { GDhg
VOW( nStartPos = input.readLong(); x-cg df nEndPos = input.readLong(); -K PbA`j+ } TEv3;Z*N input.close(); %<P&"[F]v@ } 0D=6-P?^W catch(IOException e){e.printStackTrace ();} &!_>J0 catch(Exception e){e.printStackTrace ();} nD|Bo 9 } ?z p$Wz;k (;\JCeGA {o AJL private void processErrorCode(int nErrorCode) o[aRG7C { t '* L, System.err.println("Error Code : " + nErrorCode); XNsMXeO]& } p%8y!^g / F9BbG{ V4iN2 //停止文件下载 WUZusW5s public void siteStop() c JGU~\ { bvi
Y.G3 bStop = true; EQ\/I(
=l for(int i=0;i<nStartPos.length;i++) =56O-l7T*w fileSplitterFetch.splitterStop(); ELPzqBI 6ID@ 0 l.El3+ } Sw%^&*J } C,&r7 //负责部分文件的抓取 FZO}+ P **FileSplitterFetch.java U%_BgLwy% */ \\xoOA. package NetFox; k,OP*M DOyYy~Q s&TPG0W import java.io.*; AKu]c- import java.net.*; Igrr"NuDZ b dP @^Q a/^ojn public class FileSplitterFetch extends Thread { PF~w$ eeQ Bz!SZpW(M Gg$4O 8 String sURL; //File URL 3vepJ)D ( long nStartPos; //File Snippet Start Position SN'j?- long nEndPos; //File Snippet End Position D.su^m_1 int nThreadID; //Thread's ID M*<Ee]u boolean bDownOver = false; //Downing is over AhWc JD] boolean bStop = false; //Stop identical \W4|.[ FileAccessI fileAccessI = null; //File Access interface @vs+)aRa xim'TVwvC plN:QS$
public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException C/_Z9LL?F { ?)X0l this.sURL = sURL; lf-1;6nyk" this.nStartPos = nStart; *:}9(8d this.nEndPos = nEnd; K!g!tA$ nThreadID = id; :"{("!x fileAccessI = new FileAccessI(sName,nStartPos);//定位 eaB6e@]@ } N3"O#C Vq4g#PcG OiI29 public void run() Ku$:. { >{R+j4% while(nStartPos < nEndPos && !bStop) *sz:c3{_ { |$ *5m4j=- Z}$wvd try{ m?GBvL$ URL url = new URL(sURL); M-7^\wXTA HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); !-B$WAV httpConnection.setRequestProperty("User-Agent","NetFox"); NAg m?d String sProperty = "bytes="+nStartPos+"-"; ecvQEK2L httpConnection.setRequestProperty("RANGE",sProperty); hX4V}kj Utility.log(sProperty); E7mB=bt>= ON [F `cgyiJ InputStream input = httpConnection.getInputStream(); sYa;vg4[ //logResponseHead(httpConnection); p.)IdbC`B [+;>u| mH6\8I byte[] b = new byte[1024]; x<d2/[(}mT int nRead; ~'lY Q[7 while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 8GlRO4yd { pd^"MG nStartPos += fileAccessI.write(b,0,nRead); ;2N:
=Rv //if(nThreadID == 1) mM(Z8PA9- // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); [$]qJ~kz } @}\wec_ 6
9+Pf* Xnc?oT+ Utility.log("Thread " + nThreadID + " is over!"); }-/oL+j bDownOver = true; 0(qtn9;=2 //nPos = fileAccessI.write (b,0,nRead); 0fE?(0pBj } yd|ao\'= catch(Exception e){e.printStackTrace ();} yi.GD~69 } SR>(GQ,m0; } Ky[s&>02 N||a0&& lq}m0}9< //打印回应的头信息 vFwhe! public void logResponseHead(HttpURLConnection con) _kEU=)Xe { me@k~!e"z for(int i=1;;i++) :6TLT-B { [[s^rC<d String header=con.getHeaderFieldKey(i); ,eSII2,r4 if(header!=null) ,,8'29yEq //responseHeaders.put(header,httpConnection.getHeaderField(header)); #kQ1,P6,( Utility.log(header+" : "+con.getHeaderField(header)); >lkjoEVQ else /JjSx/ break; YgV" *~ } ,8@q2a/ } %t*KP= @ #KUNZW XcFu:B public void splitterStop() weH;,e*r { N1fPutl$a bStop = true; lK Ry4~O } VPvQ]}g6k 4OOI$J$Jh ech1{v\B| } U{52bH< AB+HyZ*// 0d/
f4 /* ?Gx-q+H **FileAccess.java U+G8Hs/y *//文件访问(定位,写) ovk^ package NetFox; M#}k@
;L3 import java.io.*; T&ib]LmR sjy/[.4- OE/r0C<& public class FileAccessI implements Serializable{ ,5&
Rra/ wd*V,ZN7 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 h9Tst)iRi RandomAccessFile oSavedFile; e'X"uH Xt. long nPos; XyYP!<].C o*5b]XWw {W'{A public FileAccessI() throws IOException NCp]!=uM; { (j&7`9<5 this("",0); f?lnBvT|b } +2#pP &ox5eX( SoHw9FtS public FileAccessI(String sName,long nPos) throws IOException a(_3271 { th|'t}bWV oSavedFile = new RandomAccessFile(sName,"rw"); )1/J5DI @8 this.nPos = nPos; _};T:GOT oSavedFile.seek(nPos); F;ELsg } J9);( awgS5We| =>*9"k%m public synchronized int write(byte[] b,int nStart,int nLen) $Yj4&Two< { *5mJA -[B+ int n = -1; T5eJIc3a" try{ H,(4a2zx oSavedFile.write(b,nStart,nLen); LHMA-0$ ?) n = nLen; u}-)ywX } v*&WqVg catch(IOException e) Va$JfWef { s+9b. e.printStackTrace (); 0Wb3M"#9< } Tffdm yK>s]65& >mMmc!u>G return n; V9;O1 } ;F:Qz^=.a ejpSbVJ Bgs,6: } ~}Z'/zCZf r12e26_Ab 2{01i)2 y /* oz'^.+uvE **SiteInfoBean.java m }\L i] */ 7#sb},J{ package NetFox; ^ux"<? OSkBBo]~z gmCB4MO public class SiteInfoBean { e0g>.P@6 'ALe>\WO r5Xi2! private String sSiteURL; //Site's URL 4Y{&y6 private String sFilePath; //Saved File's Path ^}4ysw private String sFileName; //Saved File's Name -^,wQW:o) private int nSplitter; //Count of Splited Downloading File G3D!ifho.# qb PC5v <-xu*Fc public SiteInfoBean() +ooQ-Gh {//nSplitter的缺省值为5 cJ#%OU3p //default value of nSplitter is 5 lT+N{[kLt* this("","","",5); R 5Cy% } 8 O.5ML{ `cqZ;(^ J1d|L|M public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) &Ui&2EW { &P(vm@* sSiteURL= sURL; 9=G
dj!L sFilePath = sPath; *cc|(EM sFileName = sName; Ip*[H#h this.nSplitter = nSpiltter; :i]g+</ Cgn@@P5ZC |dqvv } 1A{iUddR QW>(LG G=
C44*qiG. public String getSSiteURL() ^ =RSoR { O;RNmiVoq return sSiteURL; '?b.t2 } 8zH/a
g&L $5 }\d3 public void setSSiteURL(String value) $F~hL?"? { UY&DXIP M sSiteURL = value; (=w ff5U } ,CjJO - hJ0m;j&4y fZt3cE\ public String getSFilePath() &:Sb$+z { K9Bi2/N return sFilePath; #*;Nb } l(?Yx UdX aC= Q OuU ]A[r public void setSFilePath(String value) ?r}!d2:dX { E']Gh sFilePath = value; i
,g<y } 6|{uZNz ATf{;S} W'<cAg? public String getSFileName() ?p!+s96 { KDy:A>_ G" return sFileName; W'M\DKJ? } fSzX /r {bPcr hB TkV$h(#!f& public void setSFileName(String value) OvW/{ { bHH=MLZR: sFileName = value; .@;,'Xw1~ } >jBnNA@ o!M*cyq AZadNuL/ public int getNSplitter() T#w *5Qf { w\3'wD! return nSplitter; 7`6JK } Id'@!U:NA ti9cfv> !YEU<9 public void setNSplitter(int nCount) G/C5o=cY { g@7j<UY nSplitter = nCount; =Pgu?WU@ } @DYkWivLu } m1lfC YP vg(T Y&_1U/}h /* blA]z!FU **Utility.java L8j#lu */ N^8
lfc$a package NetFox; 6Bfu89 IWcYa.=tZ },5_h0 public class Utility { ^,KN@ Q.[^5
8 #%g~fh public Utility() CmPix]YMQ { ICgyCsZ, $\@yH^hL "Z6: d"S` } t#h<'?\E $MG. I[h //线程睡眠 `;R|SyrX public static void sleep(int nSecond) RU'DUf { 6axmH~_ try{ C&ivjFf Thread.sleep(nSecond); v`$9;9 } u!DSyHR
' catch(Exception e) X*'-^WM6 { ~ ]q^Akq e.printStackTrace (); W[3)B(Vq<E } kM\O2ay } tEl4 !vA lYu1m //日志 GX
lFS#` public static void log(String sMsg) 'yM )>]u" { mckrR$> System.err.println(sMsg); 8}W06k>)% } :1wMGk ?y{C"w!
s:/.:e_PU public static void log(int sMsg) , eZL&n { @kKmkVhu* System.err.println(sMsg); ]-aeoa# } oa?eK } $V)LGu2(m [y T4n.f bMD'teJ /* ^9UF
Pij" **TestMethod.java >9g` 9hB */ pTK|u!fs package NetFox; TPds )osZT , &HZvU& ^"%SHs public class TestMethod {
t=]&q. FZ/l
T-" RfwTqw4@ public TestMethod() sy`:wp { ///xx/weblogic60b2_win.exe #7U,kTj9 try{ $E4W{ad2jW SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); MNiu5-g5 //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); p\8cl/~ SiteFileFetch fileFetch = new SiteFileFetch(bean); \6Ze H fileFetch.start(); J7.bFW' } 1h+!< |