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/* ~Rr~1I&mR, **SiteFileFetch.java }B1!gz$YNO */ (I./ Uu% package NetFox; }1upi=+aE import java.io.*; 1aTB%F import java.net.*; :*KHx|Q L'kmNVvYN P ! _rEV public class SiteFileFetch extends Thread { ;&)-;l7M @!1x7%]G BSVxN SiteInfoBean siteInfoBean = null; //文件信息Bean c3CWRi`LE long[] nStartPos; //开始位置 wY_)y long[] nEndPos; //结束位置 _/tHD]um FileSplitterFetch[] fileSplitterFetch; //子线程对象 9c("x%nLpB long nFileLength; //文件长度 .P"D boolean bFirst = true; //是否第一次取文件 c(~[$)i6 boolean bStop = false; //停止标志 T]c%!&^_ File tmpFile; //文件下载的临时信息 lx7Q.su' DataOutputStream output; //输出到文件的输出流 &:`U&06q (P:<t6;+ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) #n8IZ3+ public SiteFileFetch(SiteInfoBean bean) throws IOException &*aIEa^ { 6g)GY"49 siteInfoBean = bean; ,JQp'e //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ]'=)2
.} tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); W}mn}gTQ if(tmpFile.exists ()) >: g3k { R)m'lMi| bFirst = false; \r+8qC[, read_nPos(); BNs@n"k } V6,H}k else Xx>X5Fy { OL^l 3F nStartPos = new long[bean.getNSplitter()]; ,]d/Q< nEndPos = new long[bean.getNSplitter()]; mrF58Uq;A } z+n,uHs Jh!I:;/ )`(p9@,V #$8% w } ",KCCis $cU!m(SILQ $arK( public void run() YF>m$?; { #6HA\dE //获得文件长度 t,+nQ9 //分割文件 )u`[6,d //实例FileSplitterFetch `M^=
D&Bf //启动FileSplitterFetch线程 .E8_Oz //等待子线程返回 Su/6Q$0 t try{ SS WP~
t if(bFirst) :x4|X8> { wMg0> nFileLength = getFileSize(); !`Hd-&}bYz if(nFileLength == -1) fy@<&U5rg { %2{%Obp' System.err.println("File Length is not known!"); |#cm`v } =V-|#j else if(nFileLength == -2) TI,&!E?; { FwkuC09tI System.err.println("File is not access!"); HOJs[mqB% } Ku}Z else ^<a
t'jk6 { gL*>[@RO for(int i=0;i<nStartPos.length;i++) _8F`cuyW { q%"VYt4 nStartPos = (long)(i*(nFileLength/nStartPos.length)); st:`y=F_ } os:A] for(int i=0;i<nEndPos.length-1;i++) S p;G'*g { Vg>dI&O nEndPos = nStartPos[i+1]; ic#`N0s? } MS
81sN\d nEndPos[nEndPos.length-1] = nFileLength; 8h*Icf } 'R'*kxf } V8C:"UZ; pUQ/03dp p;3O#n-_ //启动子线程 %,@e^3B fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; zkuU5O for(int i=0;i<nStartPos.length;i++) eo?;`7 { o.!~8mD fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 7`zHX&-W siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ?IqQ-C)6D nStartPos,nEndPos,i); OuID%p"O Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ogHCt{' fileSplitterFetch.start(); fPR1f~r } `tA"
}1;ka // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), "8x8UgG siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); iXVe.n // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 1AM!8VR2 nEndPos = " + nFileLength); $!-c-0ub // fileSplitterFetch[nPos.length-1].start(); :*Z4yx 4gz
H8sF K<SyC54 //等待子线程结束 ( u\._Gwsx //int count = 0; %InA+5s` //是否结束while循环 $0>60<J boolean breakWhile = false; %7IugHH9y p93r'&Q %,}A@H, while(!bStop) j7$e28|_n { *rs5]U< write_nPos(); c1k/UcEcg~ Utility.sleep(500); M3c$=> breakWhile = true; e.7EU @s ? l1OE!W W for(int i=0;i<nStartPos.length;i++) P2BWuhF { +./H6! if(!fileSplitterFetch.bDownOver) e,vvzso { ]6(N@RC breakWhile = false; .f%fHj break; K1"*.\?F } V3Q+s8OIF } bMg(B-uF7 if(breakWhile)
-D break; !;Yg/'vD- cl=EA6P\X cl[BF'.H //count++; 5\5/ //if(count>4) Y)0*b5?1r // siteStop(); DS.RURzd{r } AS'R?aX|C /YW>*?"N CrC^1K System.err.println("文件下载结束!"); ]@j*/IP } %Gz0^[+ catch(Exception e){e.printStackTrace ();} ~?4PBq } ZkRx1S"m rzhWw-GY J%v=yBC2 //获得文件长度 +%T\`6 public long getFileSize()
Ch&a/S} { ]'!f28Ng- int nFileLength = -1; 0%&1\rm+j try{ g]<4&)~ URL url = new URL(siteInfoBean.getSSiteURL()); vM*-D{ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); y~AVei& httpConnection.setRequestProperty("User-Agent","NetFox"); VRWAm>u fHE<( *}F3M\ int responseCode=httpConnection.getResponseCode(); b~KDP+Ri if(responseCode>=400) Q]Y*K { ]qethaNy processErrorCode(responseCode); [,t*Pfq'W8 return -2; //-2 represent access is error gPNZF\ r } (6?9B lH~ q>_/u" R}
eN@#"D String sHeader; kO.%9wFbz =x%dNf$e{W 2h|MXI\g for(int i=1;;i++) 4ni<E* { #C~+JL //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); rq8K_zp //Utility.log(in.readLine()); <Swt); sHeader=httpConnection.getHeaderFieldKey(i); Qi,j+xBp if(sHeader!=null) [w>$QR { 1-%fo~!l if(sHeader.equals("Content-Length")) a,@]8 r-" { ~("5yG nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); YIn',]p: break; ;(f)&Yom } .*@;@06? } FOv=!'So else a]JYDq`,3 break; BWeA@v } [pC$+NX } 3c#BKHNC catch(IOException e){e.printStackTrace ();} fM]+SMZy catch(Exception e){e.printStackTrace ();} @K\~O__ q}`${3qQ3 nW PF6V> Utility.log(nFileLength); /7aBDc-v =e/9&993 -V-RP;"> return nFileLength; [.O?Z=5a[V } V, Z|tB^ s1MErd ,~a QL //保存下载信息(文件指针位置) [;r)9mh7 private void write_nPos() 1t:Q_j0Ym { ;kFDMuuO try{ *;l]8. output = new DataOutputStream(new FileOutputStream(tmpFile)); H7z,j}l output.writeInt(nStartPos.length); p#01gB for(int i=0;i<nStartPos.length;i++) 09X01X[ { ,V,`Jf // output.writeLong(nPos); l7XUXbYp&= output.writeLong(fileSplitterFetch.nStartPos); 03|PYk 6EW output.writeLong(fileSplitterFetch.nEndPos); \l'm[jy> } Lz`E;k^ output.close(); \s/s7y6b+ } oiF}?:7Q7 catch(IOException e){e.printStackTrace ();} ^ssK catch(Exception e){e.printStackTrace ();} lW+\j3?Z$ } m;H.#^b* c&r70L, 8>trS=;n //读取保存的下载信息(文件指针位置) 8|):`u private void read_nPos() k52/w)Ro,$ { )bS~1n_0 try{ wF
IegC( DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Sc>,lIM int nCount = input.readInt(); S'|,oUWDb nStartPos = new long[nCount]; bV(Y`g nEndPos = new long[nCount]; ujDd1Bxf? for(int i=0;i<nStartPos.length;i++) C\S3Gs { T_i:}ul nStartPos = input.readLong(); $*SW8'],` nEndPos = input.readLong(); >sfRI]OG } whmdcVh. input.close(); n(b(yXYm] } 4~k\j catch(IOException e){e.printStackTrace ();} J4QXz[dG catch(Exception e){e.printStackTrace ();} 931bA&SL=/ }
%=n!Em( `Bo*{}E OglEt[ " private void processErrorCode(int nErrorCode) n)L* { aO]ZZleNS System.err.println("Error Code : " + nErrorCode); Z8# (kmBdB } kY&k-K\ 'z0:Ccbj sR(9IW- //停止文件下载 r;/4F/6" public void siteStop() {%<OD8>p { &qMPq-> bStop = true; M2HomO/X) for(int i=0;i<nStartPos.length;i++) h XfQ)$J fileSplitterFetch.splitterStop(); H(R1o~ V[{6e CpA|4'# } 9)y/:sO<P } _76PIR{an //负责部分文件的抓取 yL%K4$z **FileSplitterFetch.java t`WB;o! */ w QgoN% package NetFox; ||T2~Q*:y 8
BY j W0(_~ import java.io.*; O*eby*%h import java.net.*; ~"!]
3C,L AuUde$l_ `NnUyQ;T public class FileSplitterFetch extends Thread { ?i)f^O l,R/Gl XxT#X3D/," String sURL; //File URL Ager$uC long nStartPos; //File Snippet Start Position N96jJk long nEndPos; //File Snippet End Position ~Fe${2 int nThreadID; //Thread's ID g'pK boolean bDownOver = false; //Downing is over +1Vjw'P boolean bStop = false; //Stop identical CAWA3fcQp FileAccessI fileAccessI = null; //File Access interface *meZ8DV2DH c;%_EN% `sUZuWL_ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 7Ilm{@b= { N/]o4o this.sURL = sURL; #hW;Ju73 this.nStartPos = nStart; sSOOXdnGG this.nEndPos = nEnd; 8yRJD[/S nThreadID = id; r>dwDBE fileAccessI = new FileAccessI(sName,nStartPos);//定位 _9faBrzd } fXXr+Mor *"R|4"uy YsG%6&zEq public void run() sC27FVwo { /,1D)0 while(nStartPos < nEndPos && !bStop) \X<bH&x:z { jYx38_5e -#0qV:D tna .52*/ try{ @xQgY*f# URL url = new URL(sURL); V\6=ySx HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); VOKZ dC- httpConnection.setRequestProperty("User-Agent","NetFox"); p%iGc<vHX String sProperty = "bytes="+nStartPos+"-"; bsuus
R9W httpConnection.setRequestProperty("RANGE",sProperty); So{x]x:f Utility.log(sProperty); sqla}~CiX V7GRA#| flk=>h| InputStream input = httpConnection.getInputStream(); rE iKi //logResponseHead(httpConnection); #?5 (o 8
![|F: ,O.3&Nz,c byte[] b = new byte[1024]; -c(F 1l int nRead; 0FGe=$vD while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) Uh.oErHQD { HqI t74+ nStartPos += fileAccessI.write(b,0,nRead); hD\rtW //if(nThreadID == 1) _Bj)r}~7# // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); `o<'
x.I } =2[7
E >QA uEM )_1zRT| 9 Utility.log("Thread " + nThreadID + " is over!"); HKF H/eV bDownOver = true; Kpb#K[(]& //nPos = fileAccessI.write (b,0,nRead); =fu
:@+ } w<zIAQN catch(Exception e){e.printStackTrace ();} Ks=>K(V6 } Z&ZP"P4 } =NOH:#iQ [OHxonU i\1TOP|h //打印回应的头信息 T~QWRBO public void logResponseHead(HttpURLConnection con) 9!T[Z/}T { *j]9vktH for(int i=1;;i++) X'%E\/~u { M9EfU String header=con.getHeaderFieldKey(i); Lk~ho?^` if(header!=null) OTC!wI
g //responseHeaders.put(header,httpConnection.getHeaderField(header)); pF&(7u Utility.log(header+" : "+con.getHeaderField(header)); pcau}5 . else !g Z67 break; thV>j9' } RMX:9aQ3F } Sczc5FG }tsYJlh5 8dV=[+ public void splitterStop() /<E5"Mm% { Ge,;8N88 bStop = true; Xua+cVc\y } !v X D ^
s1Q*He a-l;vDs } $"0M U HOw-]JSP2 m0LTx\w! /* Nndddk` **FileAccess.java j*F`"df *//文件访问(定位,写) gT$Ju88 package NetFox; <.pU,T/ import java.io.*; #Xhdn\7 P/xKnm~ ]d,S749(s public class FileAccessI implements Serializable{ SxdE?uCUS (ohq0Y //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 lrnyk(M}Q. RandomAccessFile oSavedFile; *F
?8c long nPos; /TZOJE(2j
Qi_>Mg`x U Z.=aQ}M public FileAccessI() throws IOException (rkyW z { O<96/a' this("",0); RRmLd/( } 1&^MfP} d@ Y}SWTB ]04e1F1J public FileAccessI(String sName,long nPos) throws IOException QA2borfy { Ynp{u`? oSavedFile = new RandomAccessFile(sName,"rw"); ,oaw0Vw this.nPos = nPos; z74in8] oSavedFile.seek(nPos); ~vXaqCX } 4D['^q ZQ)>s>- Yu?95qk tP public synchronized int write(byte[] b,int nStart,int nLen) <,3^|$c% { %6L^2
X int n = -1; b8LoIY* try{ fQL"O}Z oSavedFile.write(b,nStart,nLen); 1U^A56CN n = nLen; YhOlxON } N-I5X2 catch(IOException e) nA
P.^_K { t]$P 1*I e.printStackTrace (); Eq$&qV-?( } w4W_iaU vz^<YZMu q-]`CW]n return n; !PrwH; } _@
*+~9%8p wNQ*t-K p3]_}Y
D[# } #+$G=pS'v ?*?RP)V S/Fkw4% /* k$H%.l;E **SiteInfoBean.java H|RT?Q */ PZ{Dv'C package NetFox; cgl*t+o& 9AxCiT. w=^`w:5X public class SiteInfoBean { w QNxL5B Bn61AFy` R
zf private String sSiteURL; //Site's URL ua5OGx private String sFilePath; //Saved File's Path Kv.>Vf.T}_ private String sFileName; //Saved File's Name .so[I private int nSplitter; //Count of Splited Downloading File jy giG&H =+-Yxh|* Ku\Y'ub public SiteInfoBean() 0A,]$Fzt {//nSplitter的缺省值为5 F)s{P Cl //default value of nSplitter is 5 w3=%*< this("","","",5); AtF3%Zv2 } Ix(?fO#uNF Gm9hYhC8 ?[)}l9 public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) zX0mdx<|< { uiJS8(Cb sSiteURL= sURL; g.'yZvaP sFilePath = sPath; OCZ[D{i9@ sFileName = sName; x9x E& this.nSplitter = nSpiltter; 87:!C5e} GN!qyT F)+{AQL } d}JP!xf% 6KVnnK /ODXV`3QYI public String getSSiteURL() |1ST=O7.LH { +)j1.X return sSiteURL; h$.:Uj8/ } _)]+hUwY N\HQN0d9 tID%}Z v public void setSSiteURL(String value) abJ"
[ { AJSx%?h:6 sSiteURL = value; X6 6VU } ]da^xWK INkD=tX ?Y:8eD"* public String getSFilePath() >nw++[K_ { n>A98NQ return sFilePath; 2Fz|fW_ } VxY+h`4# (y?ITz9 =QK$0r]c'k public void setSFilePath(String value) wMdal:n^ { GrTulN? sFilePath = value; `)T~psT } es>W$QKlo yv\#8I:qh 9*E7}b, public String getSFileName() txcf=)@>V { g8w2Vz2/ return sFileName; )ZBY* lk9 } YKE46q;J + +aL4: )u/H>;L P public void setSFileName(String value) 2*N_5&9mE { OM|Fwr$ sFileName = value; .Wq@gV } K"b`#xN(t ZR$'u%+g' Yr w$ public int getNSplitter() ?W0)nQU { ^':!1 return nSplitter; j:,NE(DF } F:D
orE Rb%%?*| $&"V^@ public void setNSplitter(int nCount) NM0tp )h { ZxlAk+<] nSplitter = nCount; aB]m*~ } "Vr[4&` } ]D@0| l#lF
+Q; &q`q4g&7 /* ,(.MmP` **Utility.java F[4;Xq */ MB%Q WU package NetFox; \~BDm f8SL3+v Dk+&X-]6x5 public class Utility { kl"+YF5/ 4n
%?YQ[t kKPi:G52F public Utility() HLBkR>e { ?%VI{[y#> Ov#=]t5 I+!:K|^ } ?H_LX;r >yXN,5d[ //线程睡眠 2P]L9'N{Y public static void sleep(int nSecond) CH
fVQ|!\ { :>aQ~1f>] try{ #-8\JEn Thread.sleep(nSecond); /
}R z=& } }lK3-2Pk catch(Exception e) gJ;_$` { L:(1ZS e.printStackTrace (); .<z!3O&L } dgDy5{_ } r?CI)Y; 0QvT //日志 ,=aJVb=C public static void log(String sMsg) ifo7%XPcg { 5OO'v07b System.err.println(sMsg); RJy=pNztm } VR ltkI}h,e RZe'Kw - public static void log(int sMsg) =CL}
$_ { 1yV: qp System.err.println(sMsg); wZ4tCZA } sz @p_Z/ } uNn[[LS :K
~ H33i*][H /* Ne$"g[uFU **TestMethod.java Y-'78BJk */ UxD5eJJ package NetFox; Kf 2jD4z} fK&e7j`qO @:tj<\G] public class TestMethod { G&;j6<h l +dBz`WD LTJc,3\, public TestMethod() % aUsOB-RV { ///xx/weblogic60b2_win.exe >HPdzLY? try{ DAg58
=qJ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); RNPbH. //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); N$xtHtz8" SiteFileFetch fileFetch = new SiteFileFetch(bean); SxK:]Aw fileFetch.start(); kQaSbpNmH } vA)O{W\o catch(Exception e){e.printStackTrace ();} k8,?hX: l88A=iLgv kD) $2I? } }pa9%BQI 4d_s%n?C M7>(hVEAW' public static void main(String[] args) Bm\qxQ { =<@\,xN>C
new TestMethod(); x f4{r+ }
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