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/* T hLR<\ **SiteFileFetch.java o@g/,V $ */ s.G6?1VXlY package NetFox; jW!)5(B[A import java.io.*; &SE+7HXw import java.net.*; 5uufpvah !2Q> o|0QstSCl public class SiteFileFetch extends Thread { 9F"Q2^l' /*yPy? L=WB'*N SiteInfoBean siteInfoBean = null; //文件信息Bean 4\%XC
F! long[] nStartPos; //开始位置 mrz@Y0mgL long[] nEndPos; //结束位置 ngHPOI16 FileSplitterFetch[] fileSplitterFetch; //子线程对象 LQrm/)4bF5 long nFileLength; //文件长度 Ghpk0ia%d boolean bFirst = true; //是否第一次取文件 ,HM~Zs boolean bStop = false; //停止标志 [r5k8TB1 File tmpFile; //文件下载的临时信息 Jz6,2,LN DataOutputStream output; //输出到文件的输出流 nmrYB w> %[C-KQH //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 3V`.< public SiteFileFetch(SiteInfoBean bean) throws IOException _z3YB { `Gp!Y siteInfoBean = bean; _C97G& //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); N>}2&'I tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); [5Dg%?x if(tmpFile.exists ()) 8^Ov.$rP { L7lRh=D bFirst = false; E[RLBO[*n read_nPos(); a\PvRW*I } M :Aik& else E5b JIC(
{ p-t*?p
C nStartPos = new long[bean.getNSplitter()]; +2+wNFU nEndPos = new long[bean.getNSplitter()]; ?hQ,'M2 } WaRYrTDv64 1"82JN|! M%NapK GI:$(< } *jF VYg 9w! G eL+L
{Ac public void run() nE)|6
{ :>t?^r( //获得文件长度 ]'/ZSy, //分割文件 G$D6#/rR //实例FileSplitterFetch 4U*uH //启动FileSplitterFetch线程 H}$hk //等待子线程返回 ~?c}=XL- try{ wCb%{iowH if(bFirst) <C'S#5,2 { `(9B(&t^, nFileLength = getFileSize(); /B?hM&@z if(nFileLength == -1) 6/#5TdJA { $Di2BA4Di System.err.println("File Length is not known!"); Y%V|M0 0` } d">Ya !W else if(nFileLength == -2) [n_H9$ { DgLSDKO! System.err.println("File is not access!"); > HL8hN'q' } ^8V cm* else U&|$B|[ { ^<e"OV for(int i=0;i<nStartPos.length;i++) o\luE{H
.? { (qP !x 2j nStartPos = (long)(i*(nFileLength/nStartPos.length)); dIo|i,- } nAp7X-t for(int i=0;i<nEndPos.length-1;i++) "p\XaClpz { N3};M~\ nEndPos = nStartPos[i+1]; adJoT-8P6 } 2rw<]Ce nEndPos[nEndPos.length-1] = nFileLength; Wsr #YNhx| } W&>+~A } pP'-}% eXU;UO^ DT=! //启动子线程 `f:5w^A fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; a`w)awb for(int i=0;i<nStartPos.length;i++) Kup-O
u, { /rNY;qXM fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), !HXdUAKu siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), +M\*C# nStartPos,nEndPos,i); L#e|t0'# Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); BX),U fileSplitterFetch.start(); tc{23Rf% } Mdh(Mp(w // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), _OF8D siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 2#Au6BvX // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", "gCSbMq(Vq nEndPos = " + nFileLength); B(MO!GNg= // fileSplitterFetch[nPos.length-1].start(); nDvny0^a ]sjOn?YA+ 2="C6
7TK //等待子线程结束 'FBvAk6 //int count = 0; tE{7S/?h //是否结束while循环 l!ye\ boolean breakWhile = false; iR#jBqXD ,gU9ywg &%Hj. while(!bStop) 'ce9v@(0 { $`'^&o;&f write_nPos(); <,0&Ox Utility.sleep(500); tS2lex% breakWhile = true; eT+MN` ?<w +{ "VWxHRVg4M for(int i=0;i<nStartPos.length;i++) r/Pg,si { +V|]:{3W if(!fileSplitterFetch.bDownOver) /$rS0@p { @fpxGMy& breakWhile = false; "`:#sF9S break; )m[!HE`cZ } PyHE>C% } d*3R0Q|#{ if(breakWhile) ?=IbiT break; vfhip"1 &F#X0h/m= I{cn ,,8 //count++; S0=BfkHi. //if(count>4) *OF7{^~& // siteStop(); 4r(rWlM } l}AB):<Z ^:-%tpB#! nTu" System.err.println("文件下载结束!"); oS_p/$F, } <R{\pz2w catch(Exception e){e.printStackTrace ();} 8}\"LXRbo } &P ;6P4x ur#"f'|- "<O?KO3K //获得文件长度 ~[9 ]M)=O0 public long getFileSize() !9)*. 9[8 { n?
s4"N6 int nFileLength = -1; 1xtbhk]D try{ Vxgc|E^J URL url = new URL(siteInfoBean.getSSiteURL()); ^U_jeAuk8[ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 6ldDt?iSg httpConnection.setRequestProperty("User-Agent","NetFox"); fQx 4/4j SwP h-6 b'-gy0 int responseCode=httpConnection.getResponseCode(); %n}]$
d if(responseCode>=400) M(3E
b;` { 6
*8G e processErrorCode(responseCode); gieX`} return -2; //-2 represent access is error U |4%ydG } K->p&6s hcaH %)aDh
}
String sHeader; E0oJ|My ^$#Q_Y| ac&tpvij for(int i=1;;i++) o!H"~5Trv! { E>V8|Hz; //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Vk_L*lcN //Utility.log(in.readLine()); (~#PzE: sHeader=httpConnection.getHeaderFieldKey(i); L,kF] if(sHeader!=null) sU}e78m h { Z=H
fOC if(sHeader.equals("Content-Length")) i([A8C_A { mA>Pr<aV: nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); MoFZ break; |]]fcJOBP }
xjX5 PQu } WD)[Ac[ else Ql V:8:H$ break; er<~dqZ}] } (Pu*[STTT } /V*eAn8> catch(IOException e){e.printStackTrace ();} tIvtiN6[|l catch(Exception e){e.printStackTrace ();} 7PvuKAv?k |F=^Cu, O>>8%=5Q Utility.log(nFileLength); yi%B5KF~Al QWP_8$Q &`%C'KZ return nFileLength; ?D~uR2+Z } PHOW,8)dZh FQ 4rA 4 0+H"$2/ //保存下载信息(文件指针位置) >%[W2L\' private void write_nPos() @O(\TIg { UmJg-~ try{ HU'E}8%t6 output = new DataOutputStream(new FileOutputStream(tmpFile)); Gce_gZH7{ output.writeInt(nStartPos.length); j"dbl?og for(int i=0;i<nStartPos.length;i++) <<xJ-N { e'?(`yW> // output.writeLong(nPos); {oZ]1Qf_ output.writeLong(fileSplitterFetch.nStartPos); PQs9@]w[ output.writeLong(fileSplitterFetch.nEndPos); 2KX *x_- } }$UFc1He\J output.close(); I'j?T. } }l2JXf55 catch(IOException e){e.printStackTrace ();} ':[y]ep(~| catch(Exception e){e.printStackTrace ();} _8`|KY } X3>(K1 bC{~/ JP ?:2Xh/8- //读取保存的下载信息(文件指针位置) uJ$"2<O private void read_nPos() SW=p5@Hy{ { z(=:J_N try{ MWuVV=rd8a DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Tv KX8 m" int nCount = input.readInt(); aG ,uF nStartPos = new long[nCount]; &V;a: nEndPos = new long[nCount]; .6hH}BM for(int i=0;i<nStartPos.length;i++) ^m7PXY { ,s)H% nStartPos = input.readLong(); Psv!`K nEndPos = input.readLong(); xWMMHIu } kDKpuA! input.close(); 3_ >R's8P } }0TY catch(IOException e){e.printStackTrace ();} ?b0\[ catch(Exception e){e.printStackTrace ();} ,)RdXgCs } 'K!kJ9oqe 8?$2;uGL /IC'R"V a private void processErrorCode(int nErrorCode) Zry>s0 { 7MfT~v System.err.println("Error Code : " + nErrorCode); ^/+sl-6/F } g[$B90 Cr`
0C Yc$|"to //停止文件下载 fS~.K9 public void siteStop() 1m0':n Vdu { $1v5*E bStop = true; 0v_8YsZ!`$ for(int i=0;i<nStartPos.length;i++) g DhwJks fileSplitterFetch.splitterStop(); ![ QQF| =bDG|:+ =
` ^jz} } jmFN*VIL } NR*SEbUU* //负责部分文件的抓取 >g[W@FhT'k **FileSplitterFetch.java QJ>>&`{, */ a:fHTU=\p package NetFox; 2
zy^(%a s:ruCS J-}NFWR;t import java.io.*; ~g{,W import java.net.*; )=D&NO67Pq _x!pMj(A w# e'K-= public class FileSplitterFetch extends Thread { [a3
0iE (Ka#6
CytpL`&^] String sURL; //File URL pR"qPSv' long nStartPos; //File Snippet Start Position -db+Y:xUZ long nEndPos; //File Snippet End Position Bag#An1 int nThreadID; //Thread's ID C gx?K]>y boolean bDownOver = false; //Downing is over - -G1H boolean bStop = false; //Stop identical <} %ir,8 FileAccessI fileAccessI = null; //File Access interface B /W$RcV `T70FsSJ Q-F9oZ*0 public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException #-;BU{3* { G
DV-wPX this.sURL = sURL; "" U_|JH- this.nStartPos = nStart; {9Y'v this.nEndPos = nEnd; }]I?vyQ#V nThreadID = id; $<v_Vm?6d fileAccessI = new FileAccessI(sName,nStartPos);//定位 <IVz mzpL } yShHFlO= 0REWbcxd" sYXS#;|M public void run() e@OA> { GHy#D]Z while(nStartPos < nEndPos && !bStop) 'T[zh#v>S { f[IchCwX sD8S2 guv@t&;t0 try{ 0R&
U18)y URL url = new URL(sURL); z (3"\ ^T HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); akQH+j httpConnection.setRequestProperty("User-Agent","NetFox"); vrzX%' String sProperty = "bytes="+nStartPos+"-";
`xUPML- httpConnection.setRequestProperty("RANGE",sProperty); _
^{Ep/ME= Utility.log(sProperty); f[b YjIX T Rw6$CR 6<Z:Xw InputStream input = httpConnection.getInputStream(); [fp"MPP3 //logResponseHead(httpConnection); blcKtrYg LzRiiP^q O@iW?9C+ byte[] b = new byte[1024]; ?^~"x.<nr int nRead; yUO|3ONT while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) {ZXC%(u { oui!fTy nStartPos += fileAccessI.write(b,0,nRead); L2'd sOn //if(nThreadID == 1) pr txE&- // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); k`TJ<Dv; } >|)0Amt ImY.HB^& FE}!bKh Utility.log("Thread " + nThreadID + " is over!"); KeB4Pae|V bDownOver = true; 4MJzx9# //nPos = fileAccessI.write (b,0,nRead);
#-T.@a1X } /BM1AV{s6 catch(Exception e){e.printStackTrace ();} +ZKhmb! } iwQ-(GjM[A } "Vq]|j,B/c \'Ta8 zU~..;C //打印回应的头信息 <im<(=m9 public void logResponseHead(HttpURLConnection con) vLuQe0l{ { ;YDF*~9u for(int i=1;;i++) |A0$XU{ { v9U(sEDq String header=con.getHeaderFieldKey(i); 6;cY!
if(header!=null) D a[C'm= //responseHeaders.put(header,httpConnection.getHeaderField(header)); IY6_JGe_w Utility.log(header+" : "+con.getHeaderField(header)); yvCR = C else Jwd&[
O break; T-C#xmY( } toqzS!&.v } .dT;T%3fO xGfDz*t R9h>I3F=c public void splitterStop() {~fCqP.2 { Cc)P5\jh bStop = true; c1kxKxE } ]<gCq/V # 5xDN&su ]TgP!M&q } O}_a3>1DY UMuuf6 EWIc|b: /* 3]<re{)J9O **FileAccess.java *frJ^ Ws{ *//文件访问(定位,写) liqR#< package NetFox;
iN_D8dI import java.io.*; =5~F6to <m,yFk ,|X+/|gm public class FileAccessI implements Serializable{ 3g[j%`k p*`SGX //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 ^Opy6Bqb RandomAccessFile oSavedFile; GrR0RwnH)? long nPos; tx5T^K7[ oNB,.: ?[VpN2* public FileAccessI() throws IOException 8i;)|z7 { ^Wfgwmh this("",0); IT`=\K/[4 } kt{C7qpD ZQ~myqx,+L [W$Z60?RR public FileAccessI(String sName,long nPos) throws IOException 6_<s=nTX { c~UAr k S oSavedFile = new RandomAccessFile(sName,"rw"); i9eyrl+! this.nPos = nPos; s
S5fd)x oSavedFile.seek(nPos); ydND$@; Z } HNy/ - x8?x/xE 5 n+ e public synchronized int write(byte[] b,int nStart,int nLen)
{kPe#n>xT { q{cp|#m#G int n = -1; 3z)"U try{ LxlbD#<V oSavedFile.write(b,nStart,nLen); o}MzqKfu n = nLen; Sf&?3a+f } jD/7/G* catch(IOException e) XDkS
^9 { M6]0Y@@> e.printStackTrace (); 6W;?8Z_1 } bug Fl> L;
q)8Pb :%#r.p"6x return n; :vK(LU0K } NdsX*o@a ?orh JS 5U{4TeUH } -/UXd4S R+E_#lP_$ DVl[t8K! /* W&e'3gk _ **SiteInfoBean.java cRh\USS */ C~{NKMeC/m package NetFox; K2xH'v
O ( I{42'9 LiZdRr public class SiteInfoBean { kxm:g)`=[ 1GG>.RCP ^r>f2 x private String sSiteURL; //Site's URL x^)g'16` private String sFilePath; //Saved File's Path ^p 2.UW private String sFileName; //Saved File's Name {b'}:aMc private int nSplitter; //Count of Splited Downloading File 1xO!w+J# )d}H>Qx= ut4r~~Ar public SiteInfoBean() v._Egk0 {//nSplitter的缺省值为5 %9T~8L
@. //default value of nSplitter is 5 SbS$(Gt#Bv this("","","",5); u3Usq=Ij{ } hIVI\U, 3cOY0Z#T jVad)2D public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) *%X6F~h(u { vZb|!#I sSiteURL= sURL; -c+[6A>j sFilePath = sPath; >-5td=:Z sFileName = sName; Q`S iV this.nSplitter = nSpiltter; V(;55ycr m7r j>X Y W?qpnPW } x0\e<x9s -uA 3Y Z}8k[*. public String getSSiteURL() rH$eB/#F { =[]x\&@t return sSiteURL; 1l/AKI(! } 4>4V-m\ ;w`sz. =oE_.ux\ public void setSSiteURL(String value) 5LQk8NPh { JFkN=YR8 sSiteURL = value; FZe:co8Mu } *.,"N} O87"[c`> { p1lae public String getSFilePath() v:rD3=M- { 6exI_3A4jh return sFilePath; YBX)eWslK } (U|)xA]y! XC|*A$x, )v%l0_z{ public void setSFilePath(String value) z,pNb%*O { -#LjI. sFilePath = value; CO-Iar } /8xH$n&xoC N'I(P9@ TC qkm^xv public String getSFileName() QVIcb;&:} { ,YjxCp3 return sFileName; u`'ki7LA } >M?H79fF2s !|:RcH[ 7\mDBG public void setSFileName(String value) 8h2D+1,PZC { OmB
TA=E< sFileName = value; ,H>W:O } XZ.7c{B< wJ6_I$> :qxm !P public int getNSplitter() RX:R*{]- { -Q6(+(7_| return nSplitter; 9Ei5z6Vk/+ } N99[.mErU ^_@r.y] =0,|/1~ public void setNSplitter(int nCount) ]?[zx'| { 2(pLxVl nSplitter = nCount; R]Hz8 _X } yahAD.Xuo@ } R.K?
Hi^35 *oCxof9JA /* _B)s=Snx **Utility.java 2Kjrw; */ hjkLVL package NetFox; dUIqD l 8qn 9| OY: u',T public class Utility { >-b&v $ *-0>3 jh[
#p?: public Utility() H"eS<eT { 13H;p[$ <PX.l% >?z:2@Q)B } H
nK!aa mjbTy"}" //线程睡眠 $!f!,fw+ public static void sleep(int nSecond) IroPx#s:i { /0(%(2jIWl try{ zX98c Thread.sleep(nSecond); jgG$'|s} } u^t$cLIZ catch(Exception e) c&E]E( { 2`EVdl7B] e.printStackTrace (); 1B 5:s,Oyj } \wYc1M@7V } qe<Hfp/p q]CeD //日志 1w`2Dt public static void log(String sMsg) LT/mb2 { S#tY@h@XV System.err.println(sMsg); 6ZcXS } oe9lF*$/ &:<, c12 "tUwo(K[ public static void log(int sMsg) hUh+JW { eTT)P System.err.println(sMsg); h h"h
j } Fk{J@Y } e4DMO*6 nob0T5G M ,`w A /* zEj#arSE4 **TestMethod.java ?E6^!4=, */ +1QK}H~ package NetFox; ;r.EC}>m Lkn4<'un -jB3L: public class TestMethod { z8E1 m" ];1R&:t &kzj?xK=(j public TestMethod() A
(okv { ///xx/weblogic60b2_win.exe c+g@Z"es try{ E;9>ePd@ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); &n:{x}Uc //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 9gy(IRGq/ SiteFileFetch fileFetch = new SiteFileFetch(bean); le8 #Z}p fileFetch.start(); 2Q@Y^t
} y \D=Z
N@ catch(Exception e){e.printStackTrace ();} <.bRf 1Ipfw 5pfYEofK[ } H>XFz(LWh y! ~qbh[ Be2lMC public static void main(String[] args) p$Hi[upy { |
&7S8Q new TestMethod(); H; Ku
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