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/*
[P`e@$ **SiteFileFetch.java fZo#:"{/K */ lA5Dag' package NetFox; H`CID*Ji import java.io.*; \0b}Z#'0 import java.net.*; VV$t*9w \~
D(ww 7y'uZAF public class SiteFileFetch extends Thread { Lb/GL\J) Gaix6@X6' LORcf 1X/ SiteInfoBean siteInfoBean = null; //文件信息Bean k8w\d+!v long[] nStartPos; //开始位置 |"gL{De long[] nEndPos; //结束位置 +-!E%$ FileSplitterFetch[] fileSplitterFetch; //子线程对象 ~5N}P>4* long nFileLength; //文件长度 l{k_;i!D boolean bFirst = true; //是否第一次取文件 xqG<R5k>> boolean bStop = false; //停止标志 m-Eh0Zl>Z File tmpFile; //文件下载的临时信息 5?7AzJl> DataOutputStream output; //输出到文件的输出流 ,|]JaZq [SPx //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) vgwpuRL5b public SiteFileFetch(SiteInfoBean bean) throws IOException ?_NKyiu95 { .Kb3VNgwvm siteInfoBean = bean; L'= \|r //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); .{V"Gn9! tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 3kn-tM if(tmpFile.exists ()) "?8)}"/f { W;vNmg}mn bFirst = false; 928_e)V read_nPos(); +hyOc|5 } C-&ymJC| else w'
7sh5 { OIcXelS:@k nStartPos = new long[bean.getNSplitter()]; n Nt28n@ nEndPos = new long[bean.getNSplitter()]; <Riz!(G } my?Ly(# 6_j |@ _'=,c" FZHA19Kb } JVc{vSa!rm [l23b{ QQ(}71U public void run() kBo:)Vej4 { EW
`hL~{ //获得文件长度 pXk^EV0 //分割文件
I1Q!3P //实例FileSplitterFetch =oBpS=<7 //启动FileSplitterFetch线程
}v ZOPTP //等待子线程返回 2JfSi2T try{ ./YR8 #, if(bFirst) KgL!~J { +9_Y0<C nFileLength = getFileSize(); |+#Zuq if(nFileLength == -1) p*
>z:= { Tgdy;? System.err.println("File Length is not known!"); owAO&"C } H[=\_X1o( else if(nFileLength == -2) D-gH_ff<]9 { /"{d2 System.err.println("File is not access!"); jP+yN| } 86ao{l6l C else :Jd7q. { B8@mL-Z-; for(int i=0;i<nStartPos.length;i++) ^? fOccfQ{ { fUT[tkb/! nStartPos = (long)(i*(nFileLength/nStartPos.length)); cn'>dz3v } RZa/la* for(int i=0;i<nEndPos.length-1;i++) DH(<{ #u { ,B <\a nEndPos = nStartPos[i+1]; <kn2 } !=[Y yh nEndPos[nEndPos.length-1] = nFileLength; <L}@p8Lq } tLE8+[
SU } c./\sN@ zoq;3a5cqB ho\1[xS //启动子线程 \""^'pP@ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; `|t,Uc|7! for(int i=0;i<nStartPos.length;i++) y=3 dGOFB { 59E9K)c3 fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), il0K ^i siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), PxkV[nbS nStartPos,nEndPos,i); SuE~Wb5& Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Hm-#Mpw fileSplitterFetch.start(); q<YM,%mgj } }lZEdF9GhG // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), N`8K1{>BH siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); -cgO]q+Oq // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Sn=6[RQ>P nEndPos = " + nFileLength); (NJ{>@& // fileSplitterFetch[nPos.length-1].start(); #6 M]tr .S` q2C\ kWzp*<lWe //等待子线程结束 F`D$bE;| //int count = 0; HE}0_x. //是否结束while循环 J8'"vc} = boolean breakWhile = false; y0%@^^-Ru JVAyiNIH>M $QJ3~mG2 while(!bStop) j >k
;Zj { E$"NOR write_nPos(); hh;kBv07o Utility.sleep(500); AR |4^ breakWhile = true; ;*%rFt9FK fUw:jExz M9"Bx/ for(int i=0;i<nStartPos.length;i++) Q 3WD!Z8y { I;4quFBlMu if(!fileSplitterFetch.bDownOver) EX)&|2w
{ Y9.3`VX breakWhile = false; [-(^>Y break; )fJ"Hq } 'm<Lx _i } cAR
`{%b if(breakWhile) OZ`cE5"i break; +wi=IrRr poz_=,c Y3 $jNuV //count++; yZlT#^$\ //if(count>4) s&73g0$$ // siteStop(); 6Zi{gx } b0~r/M;J >LBA0ynh
{ >a8iY|QY System.err.println("文件下载结束!"); ,dRaV</2 } qT#e
-.G catch(Exception e){e.printStackTrace ();} lY,^ } $N?8[ ~[CFs'`(2 $PJ==N //获得文件长度 o\8?CNm1( public long getFileSize() '!m6^*m|c { oN032o?S int nFileLength = -1; eB0exPz% try{ TFXBN.?9T URL url = new URL(siteInfoBean.getSSiteURL()); snaAn?I4 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); uw mN!!TS httpConnection.setRequestProperty("User-Agent","NetFox"); ,X!6|l8 :^7w R4p Pt int responseCode=httpConnection.getResponseCode(); <-I69` if(responseCode>=400) KF(H
>gs { }`qAb/Ov processErrorCode(responseCode); D4VDWv return -2; //-2 represent access is error f|{iW E2d } bYsX?0T!p &g|[/~dIr fZiAl7b! String sHeader; d]DV\*v f~VlCdf+ <YvXyIs for(int i=1;;i++) V\`Z|'WIQD { >jt2vU@t. //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ]oP1c-GEk //Utility.log(in.readLine()); ( d_z\U7l sHeader=httpConnection.getHeaderFieldKey(i); GD4S/fn3 if(sHeader!=null) J?o { 9nR\7!_ if(sHeader.equals("Content-Length")) TUfj\d, { ?X@!jB,Pv nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); `nF SJlr& break; sh
:$J[ } v~mVf.j1 } uSfHlN4l else ed6@o4D/kf break; J5{;+ysUMl } :+\0.\K0! } c5ij2X|I catch(IOException e){e.printStackTrace ();} 0:V/z3? catch(Exception e){e.printStackTrace ();} ^8
VW$} ,iV%{*p] X.b8qbnq[ Utility.log(nFileLength); Mq\=pxC@ 4\n
~
bv4umL / return nFileLength; |Y
uf/G%/ } n{gEIUo# WFF?VBT'^ JV~
Dly> //保存下载信息(文件指针位置) )Q1>j 2& private void write_nPos() <Z^by;d|z { D
/QLp3+o try{ %0GwO%h}, output = new DataOutputStream(new FileOutputStream(tmpFile)); \OW:- output.writeInt(nStartPos.length); I
Cc{ 2l for(int i=0;i<nStartPos.length;i++) gKh*q. { NsB]f{7>8+ // output.writeLong(nPos); W9?*
~! output.writeLong(fileSplitterFetch.nStartPos); AX`Tku output.writeLong(fileSplitterFetch.nEndPos); #QwkRzVoy } }y6|H,t9 output.close(); Y
D<3#Dr] } M/ 64`lcb catch(IOException e){e.printStackTrace ();} j!4{+&Laq catch(Exception e){e.printStackTrace ();} X /c8XLe" } I# tlaz# -DkD*64wu ;+~5XLk //读取保存的下载信息(文件指针位置) O h@z<1eYZ private void read_nPos() h7#\]2U$[5 { <q7o"NI6FZ try{ T]\1gs41 DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); V#Wy`
ce int nCount = input.readInt(); VukbvBWPN nStartPos = new long[nCount]; cy^=!EfA nEndPos = new long[nCount]; }2]|*?1, for(int i=0;i<nStartPos.length;i++) e* [wF})) { w-Ph-L/ nStartPos = input.readLong(); xeF>"6\ nEndPos = input.readLong(); Zv@qdY<: } `PARZ| input.close(); E^)FnXe5 } 'iW catch(IOException e){e.printStackTrace ();} vbmt0df catch(Exception e){e.printStackTrace ();} &. =8Q? } lrE"phYk TdPd8ig8{ "}3sL#|z private void processErrorCode(int nErrorCode) PSJj$bt;<+ { &@6xu{o System.err.println("Error Code : " + nErrorCode); $UzSPhv[ } EGl<oxL*R2 %mQ&pk D W U=qD+ //停止文件下载 Ur+U#} public void siteStop() Ae7FtJO { ]zYIblpde bStop = true; <,:{Q75 for(int i=0;i<nStartPos.length;i++) X(tx8~z fileSplitterFetch.splitterStop(); @1oX [l-o*@ y7+@
v' } 6) i-S<( } K9@.l~n //负责部分文件的抓取 Y*BmBRN **FileSplitterFetch.java yhKH}
kR */ uUjjAGZ package NetFox; ?;RY/[IX6 uqcG3Pi U$5x#{AFp import java.io.*; J?V$V
>d import java.net.*; byI"
? TyV~2pcN L!:NL#M public class FileSplitterFetch extends Thread { I7_8oq\3D k<1i.rh 2{j$1EdI@- String sURL; //File URL _|\X8o_ long nStartPos; //File Snippet Start Position 0f5 ag& long nEndPos; //File Snippet End Position -1dD~S$ int nThreadID; //Thread's ID >T;!Z 5L1 boolean bDownOver = false; //Downing is over $TK*w8@: boolean bStop = false; //Stop identical Lyc6nP;F
FileAccessI fileAccessI = null; //File Access interface bhD-;Y!6; !Q"L)%)'A L,R}l0kc public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 6 ZRc|ZQ { hj1;f<'
U this.sURL = sURL; dCo)en this.nStartPos = nStart; U nDCC_ud this.nEndPos = nEnd; )<HvIr(xr nThreadID = id; :WRD<D_4 fileAccessI = new FileAccessI(sName,nStartPos);//定位 =bh: U90y } 1{M?_~g4 Vja 4WK* Un8' P8C public void run() %ap]\o$^4 { $*eYiz3Ue while(nStartPos < nEndPos && !bStop) >\K=)/W2 { x=H{Rv M
IIa8; t<te{yt% try{ ~2>A dp URL url = new URL(sURL); M_!]9#:K7 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); d21thV ,S httpConnection.setRequestProperty("User-Agent","NetFox"); 2:|vJ<Q String sProperty = "bytes="+nStartPos+"-"; BPj?l httpConnection.setRequestProperty("RANGE",sProperty); ~j[?3E4L} Utility.log(sProperty); ~ox}e(xy n#}@|"J 3chx4 InputStream input = httpConnection.getInputStream(); WzFXF{( //logResponseHead(httpConnection); _xAru9=n^ vk|f"I B{\Y~>]Pj byte[] b = new byte[1024]; KGDN)@D int nRead; (LsVd2AbR while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) <N<0 ?GQ { W!HjO; nStartPos += fileAccessI.write(b,0,nRead); (ORbhjl //if(nThreadID == 1) .=YV // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); g5#LoGc } hYyIC:PXR K3vZ42n [GbrKq( Utility.log("Thread " + nThreadID + " is over!"); n`^jNXE bDownOver = true; ,JI] Eij^ //nPos = fileAccessI.write (b,0,nRead); #8XmOJ"W3k } 9wCgJ$te catch(Exception e){e.printStackTrace ();} (P?|Bk[ } \X\< +KU } a)W|gx6Y t8Pf~v ~hq\XQX //打印回应的头信息 8L:AmpQdpA public void logResponseHead(HttpURLConnection con) ue3 ].: { ,W+=N"`a' for(int i=1;;i++) w &YUb,{Y { e,#w*| String header=con.getHeaderFieldKey(i); T7i>aM$+ if(header!=null) "3jTU //responseHeaders.put(header,httpConnection.getHeaderField(header)); zW\a)~E Utility.log(header+" : "+con.getHeaderField(header)); %H?B5y else f'ld6jt|% break; *[cCY!+Qy } $|Ol?s }
R/1e/ t ri-&3%%z< }{+?>!qD t public void splitterStop() Z[[*:9rY| { '9]?jkl bStop = true; DCa[?|Y } i5(qJ/u .qe+"$K'n [3=Y 9P: } ,l!>+@ An>ai N] +D
@B eQu /* w)J-e gc **FileAccess.java 5.-:)= *//文件访问(定位,写) r=.@APZB package NetFox; G "+[@| import java.io.*; f\?Rhyz \a0{9Xx F ir}*E=* public class FileAccessI implements Serializable{ u0)O Fz Vxrj(knck, //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 M&=SvM.f RandomAccessFile oSavedFile; 7]So=%q long nPos; LTBH/[q5 X)(K|[ QpzdlB44l public FileAccessI() throws IOException <gX({FA { A/9<} m this("",0); kqX%y } pno}`Cer ]~$@x=p2e ~:,}?9 public FileAccessI(String sName,long nPos) throws IOException _Cf:\Xs
m { nGTGX oSavedFile = new RandomAccessFile(sName,"rw"); Ax|'uvVAPT this.nPos = nPos; I`xC0ZUKj oSavedFile.seek(nPos); [x?9<#T } ":e6s co '/D2d BbFLT@W4 public synchronized int write(byte[] b,int nStart,int nLen) QDJ#zMxFD { o *U-.& int n = -1; >&>EjK4? try{ XRM/d5 oSavedFile.write(b,nStart,nLen); Jo8fMG\P n = nLen; G \a`F'Oo } })8D3kzX) catch(IOException e) Qd~7OH4Lp { [V
/f{y~{ e.printStackTrace (); )6"p@1\u } BGVnL}0 GLub5GrxR 7H6Ge-u return n; <:(;#&< } d|87;;X|u VJA/d2Oys AEf[:]i] } l'Li!u 'rXf N? S;v&q+ /* 'G[G;?F **SiteInfoBean.java H{_D#It */ Q<szH1- package NetFox; ,d!@5d&Zi Qhe<(<^J, 08AD~^^ public class SiteInfoBean { 2xi;13? ?FS0zc!+ ]ZR`
6|"VO private String sSiteURL; //Site's URL c#u_%* private String sFilePath; //Saved File's Path B(FM~TVZ private String sFileName; //Saved File's Name <7T}b95 private int nSplitter; //Count of Splited Downloading File ;9#W#/B v}5YUM0H ` m' j1 public SiteInfoBean() g"!cO^GkT {//nSplitter的缺省值为5 }/tf^@ //default value of nSplitter is 5 2>.b~q@ this("","","",5); mo
tW7|p.e } n}9<7e~/ 9I5AYa? L|D9+u L public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) npytb*[|c { zSMM?g^T sSiteURL= sURL; &&jQ4@m}j sFilePath = sPath; 'lEIwJV$ sFileName = sName; 6]GHCyo this.nSplitter = nSpiltter; um<$L r.u\qPT& 2u0B=0x } ETX>wZ AL&<SxuP eC 2~&:$L public String getSSiteURL() sAjUX.c { lpB:lRM return sSiteURL; GaJE(N } f;+.j/ + ]4')H;'y RV]QVA*i public void setSSiteURL(String value) U![$7k>,pr { Dbx zqd sSiteURL = value; n0K+/}m } J_XkQR[Y B1I{@\z0G @yQ1F>
t public String getSFilePath() xU{0rM" { dB&<P[$+8 return sFilePath; FKe/xz } ,T^A?t DqI "B "9X(.v0ze public void setSFilePath(String value) Jv%)UR.] { qv2J0'd'. sFilePath = value; VWYNq^<AT } Jp8,s% I@Yk &aU _TJkYz$ public String getSFileName() iYdg1 { ;$ ]a.9
- return sFileName; Hit)mwfYE } z#n+iC$9 SEu:31k{o SN}3 public void setSFileName(String value) Xrc{wDn { -nD}k sFileName = value; FyXO @yF } 0>;[EFL 7)> L#(N wpNb/U public int getNSplitter() p Zxx { q+;lxR5D return nSplitter; cF iTanu } <)J@7@!P A??a:8id^ jCx*{TO public void setNSplitter(int nCount) 1xsJz^%V { ;<cCT!A nSplitter = nCount; "}[ ]R } OB+ cE4$ } kA2)T,s74 HFYe@ 2r RN&8dsreZp /* z>=;Xe8P8n **Utility.java sUkn.g! */ W=#jtU`:5 package NetFox; gId
:IR 'Vhnio;qC 8[
ZuVJ] public class Utility { )5x$J01S fkk9&QB%( iP9Dr<P public Utility() Y{t}sO%A { _? $')P| z,!A4ws G!D~*B9G } ]r#NjP 96gaun J //线程睡眠 xo-{N[r public static void sleep(int nSecond) ]N1,"W} { hbx+*KM try{ ,oEAWNbgQ Thread.sleep(nSecond); b$*G&d5 } Jcp=<z*0 catch(Exception e) 2 0A:,pMb { S4E@wLi e.printStackTrace (); @}%kSn5y: } Idj Z2)$
} OaByfo<S idS+&:' //日志 %yR80mn8 public static void log(String sMsg) YR)^F|G { :X 1Y System.err.println(sMsg); g,RhUt9 } ;>]dwsA*P [H2su|rBI` #m'+1 s L public static void log(int sMsg) 7i=ER*F~ { 'Rv.6>xqc System.err.println(sMsg); B\dhw@hM } L'"od;(6R } 0U2dNLc X`]>J5 I
wu^@ /* |g\CS4$ **TestMethod.java |c2;`T#`o */ "nNT9
K| package NetFox; (d[JMO^@8 B+'w'e$6 ^w*vux|F public class TestMethod { grDz7\i: S2=x,c$ L[:M[,?=` public TestMethod() ,nw5 M.D_ { ///xx/weblogic60b2_win.exe s6oIj$ try{ !U1V('
SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); n+'s9 //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); k{\a_e` SiteFileFetch fileFetch = new SiteFileFetch(bean); 9H%ixBnM fileFetch.start(); b]WvKdq } ?bG82@- catch(Exception e){e.printStackTrace ();} j2 #B l bWB&8&p lF$$~G } p"n3JV.~k+ m&Y?]nbq w`Rt "d_B public static void main(String[] args) tQ2S*]"f { W6yz/{Rf new TestMethod(); /
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