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/* Mw"[2PA **SiteFileFetch.java JiO8EIM */ <;'{Tj-" package NetFox; wq,&0P-v import java.io.*; 7cWeB5e?O import java.net.*; [i.c;'Wy/ e=p_qhBt 6rWq
hIaI public class SiteFileFetch extends Thread { R,["w98a )V+/@ 4 I<,~>'cq. SiteInfoBean siteInfoBean = null; //文件信息Bean 6d6Dk>(V long[] nStartPos; //开始位置 K7.ayM 0 long[] nEndPos; //结束位置 3-6MGL9 FileSplitterFetch[] fileSplitterFetch; //子线程对象 "L`BuAB long nFileLength; //文件长度 {O).! boolean bFirst = true; //是否第一次取文件 2L[!~h2 boolean bStop = false; //停止标志 9z{g3m70@ File tmpFile; //文件下载的临时信息 b<#zgf DataOutputStream output; //输出到文件的输出流 SK&1l`3 t9*e" QH //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) iPY)Ew`Im public SiteFileFetch(SiteInfoBean bean) throws IOException ]dl.~;3~~ { "PWGtM:L8Y siteInfoBean = bean; -P-8D6 //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 0u&x%c tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); RRYcg{g if(tmpFile.exists ()) ut]UU*g^$ { fv+d3s?h bFirst = false; X2 ;72 read_nPos(); m\CU,9;;( } 6R8>w, else :;hX$Qz { !>ZBb\EyK nStartPos = new long[bean.getNSplitter()]; fx4#R(N nEndPos = new long[bean.getNSplitter()]; g:xg ~H2 } $%!06w#u <n2'm
b{)kup Anpp`>}N } 6I=xjgwvf . XbDb 8.^`~ta public void run() N?#L{Yt { Zn40NKYc //获得文件长度 $I/ !vV //分割文件 4 #KC\C //实例FileSplitterFetch ^_V0irv //启动FileSplitterFetch线程 .I]v
D#o //等待子线程返回 Mae2L2vc try{ d(d3@b4Ta if(bFirst) z.\\m;s { y!:vX6l nFileLength = getFileSize(); zFipuG02 if(nFileLength == -1) \L$]2"/v- { 8tf>G(I{ System.err.println("File Length is not known!"); ]]`[tVaFr } {R[ V else if(nFileLength == -2) RhT:] { K4E2W9h System.err.println("File is not access!"); #lSGH 5Fp? } >gq=W5vN( else 8'zfq
]g { &U=_:]/ for(int i=0;i<nStartPos.length;i++)
lX/7 { hCc%d$wVk nStartPos = (long)(i*(nFileLength/nStartPos.length)); W!kF(O
NA }
._;It198f for(int i=0;i<nEndPos.length-1;i++) Xt:j~cVA { lA4J# nEndPos = nStartPos[i+1]; $Jn.rX0}$ } xiQc\k$ nEndPos[nEndPos.length-1] = nFileLength; OEzSItAI/[ } xO%yjG= } `WxGU N>sT@ >
) Wnp[8IEU //启动子线程 X|g5tnsj` fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 1cMdoQ for(int i=0;i<nStartPos.length;i++) hBcklI { Dp#27Yzc fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), s(s_v ?k siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), y,KZp2 j nStartPos,nEndPos,i); 1rue+GL Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); CN-4FI)1D9 fileSplitterFetch.start(); ?}W#j } &`>dY
/Y // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Bd;EI)JT siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); $:-C9N29 // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ,,IK} nEndPos = " + nFileLength); 'cIFbjJ // fileSplitterFetch[nPos.length-1].start(); _U*1D*kLI[ 6 !fq658 kf~>%tES] //等待子线程结束 9!2$?xqym //int count = 0; jE5=e</ //是否结束while循环 zH~g5xgh boolean breakWhile = false; c$u#U~~ 6"rS?>W/mO FcOrA3tt while(!bStop) |\"%Dy[m { i*09m^r write_nPos(); \Km+>G Utility.sleep(500); 7<2?NLE8* breakWhile = true; eCg|@d% D j
*N^.2 kZ:~m1dd for(int i=0;i<nStartPos.length;i++) 3z#fFP@E { AI9=?X<kh if(!fileSplitterFetch.bDownOver) -A:'D8o#f { z|S4\Ae breakWhile = false; 7-9HCP break;
Bv%dy[I } 5$$]ZMof } s <$*A;t if(breakWhile) qe0ZM-C_ break; '=(yh{W b+CvA(* gKPqU @$* //count++; :
9zEne4 //if(count>4) k9\n='OI // siteStop(); M[R' } 1JI7P?\B $"=0{H.? w%6 L" System.err.println("文件下载结束!"); Fy_~~nI0 } d+8|aS<A catch(Exception e){e.printStackTrace ();} [t5D d } )hK;27m4 UC00zW<Z@" H
a`V"X{} //获得文件长度 f-}_ public long getFileSize() B|;?#okx { 9!D
c= int nFileLength = -1; :{Iv
]d try{ mT1Q7ta*P URL url = new URL(siteInfoBean.getSSiteURL()); n{c-3w.uD HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); o 7 &q httpConnection.setRequestProperty("User-Agent","NetFox"); $')Uie<!8 #N\<(SD/ #q?:Act int responseCode=httpConnection.getResponseCode(); HuD~(CI. if(responseCode>=400) *NIhYg6 { 5*$z4O:Aa processErrorCode(responseCode); [{+ZQd return -2; //-2 represent access is error lJ4/bL2I/ } MPsm)jqX jSvo- fEyc3K'5V String sHeader; h&bs` $[(FCS elP#s5l4 for(int i=1;;i++) %Vsg4DRy { H<`7){iG //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); M;@/697G //Utility.log(in.readLine()); o1<Z;2# sHeader=httpConnection.getHeaderFieldKey(i); Xkp`1UTH if(sHeader!=null) ]#$rTWMl' { 0Jm)2@ if(sHeader.equals("Content-Length")) k@2@%02o9C { NX<Q}3cC nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); n(Ry~Xu_ break; 9z?B@;lMc } FzFP 0 } o7:"Sl2AD else ~T'$gl break; AiV1
vD` } Mj |"+( }
:DBJ2n catch(IOException e){e.printStackTrace ();} 8PW3x-+ catch(Exception e){e.printStackTrace ();} sH)40QmO{ Xm.["& I;?np Utility.log(nFileLength); |\q@XCGei 9
J~KM=p =Xb:. return nFileLength; ,V=]QHcg } 95 X6V KWT[b? brt`oR //保存下载信息(文件指针位置) Cqw`K P private void write_nPos() 0J9Ub
{ YoRD9M~iG~ try{ =xHzhh output = new DataOutputStream(new FileOutputStream(tmpFile)); 7C^W <SUo output.writeInt(nStartPos.length); dv\aP for(int i=0;i<nStartPos.length;i++) 'ewVn1ME[ { #K[6Ai=We} // output.writeLong(nPos); VK$s+" output.writeLong(fileSplitterFetch.nStartPos); ,6^V)F output.writeLong(fileSplitterFetch.nEndPos); e&XJK*Wf } ~2U5Wt output.close(); )%(H'omvl } NE!] catch(IOException e){e.printStackTrace ();} uB3Yl=P catch(Exception e){e.printStackTrace ();} n'Z5rXg } --|L?-2k, ] Y6y ]u 'xc=N //读取保存的下载信息(文件指针位置) 17;qJ_T) private void read_nPos() 4ew#@ { iJ~e8l0CA try{ x?-kt.M DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ;!/g`*? int nCount = input.readInt(); @RVj~J.A nStartPos = new long[nCount]; UNKXfe(X9 nEndPos = new long[nCount]; CK RnkTTiV for(int i=0;i<nStartPos.length;i++) F%e5j9X` { P}bw Ej nStartPos = input.readLong(); tp=/f
!bv nEndPos = input.readLong(); /hbdQm } Ng<oz*>U input.close(); H}&4#CQ'! } 6ALUd^ catch(IOException e){e.printStackTrace ();} AG<TY<nqL catch(Exception e){e.printStackTrace ();} W!WeYV}kb } '9q:gFO nM&UdKf3 ,L7:3W private void processErrorCode(int nErrorCode) bmGtYv { GxcW^{; System.err.println("Error Code : " + nErrorCode); 8AVG pL } ALnE[}N6, 5Lm<3:7Q+ "+KAYsVtU //停止文件下载 /s~&$(d59o public void siteStop() c9N5c { V(6ovJpA0 bStop = true; sD`OHV: for(int i=0;i<nStartPos.length;i++) UG<`m] fileSplitterFetch.splitterStop(); S.A|(?x !V;glx[ >>HC| } cu$i8$?t } $79-)4;z4 //负责部分文件的抓取 *Wz\FixP0 **FileSplitterFetch.java b R;Wf5 */ LuW^Ga"E package NetFox; ,Taq~ 23WlUM b&Go'C{p import java.io.*; d<B=p&~ import java.net.*; K_E- Hgg_ R?GF,s<j "f<+~ public class FileSplitterFetch extends Thread { hO}nc$S "jG-)k`a ,}_uk]AQ String sURL; //File URL $>y long nStartPos; //File Snippet Start Position '2.11cM3 long nEndPos; //File Snippet End Position dX:#KdK int nThreadID; //Thread's ID :*{\oqFn~$ boolean bDownOver = false; //Downing is over _Zs]za.#)| boolean bStop = false; //Stop identical gdfG3d$4 FileAccessI fileAccessI = null; //File Access interface rCdf*; bv8GJ # JqYt^,,Q: public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException n^Sc*7 { uA2-&smw this.sURL = sURL; f$^+;j this.nStartPos = nStart; Q.Ljz
Z this.nEndPos = nEnd; i@XFnt nThreadID = id; 5!)_"u3 fileAccessI = new FileAccessI(sName,nStartPos);//定位 oc3}L^aD } b5Pakz=jNM mMRdnf!Uid bkfk9P public void run() a2N4Jg@ { @ag*zl while(nStartPos < nEndPos && !bStop) mrz@Y0mgL { ngHPOI16 LQrm/)4bF5 M,b^W:('4 try{ ,HM~Zs URL url = new URL(sURL); GBsM?A: HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); tug\X httpConnection.setRequestProperty("User-Agent","NetFox"); *X4$'LSx1 String sProperty = "bytes="+nStartPos+"-"; |]9Z#lv+I httpConnection.setRequestProperty("RANGE",sProperty); YKsc[~
h Utility.log(sProperty); S0<m><|kl Vz,2_QJ hu+% X.F4 InputStream input = httpConnection.getInputStream(); lm;G8IP` //logResponseHead(httpConnection); 15 ^5yRXC 19t' Yi+~}YP.E( byte[] b = new byte[1024]; ep3iI77/ int nRead; /4Lmu+G4 while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ?nAKB5= { 9&`ejeD nStartPos += fileAccessI.write(b,0,nRead); 2i3& 3oz]O //if(nThreadID == 1) pD>^Dfd // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Ma`Goi\vFk } ?hQ,'M2 rX<gcntv .5~W3v
< Utility.log("Thread " + nThreadID + " is over!"); Z/ypWoV( bDownOver = true; _("&jfn
//nPos = fileAccessI.write (b,0,nRead); ?w[M{ } g$f; catch(Exception e){e.printStackTrace ();} 8>|@O<2\ } =
5E:C P } =':,oz^| }@V,v[&e dn1Tu6f;| //打印回应的头信息 'Na/AcRdg public void logResponseHead(HttpURLConnection con) .{|AHW&0< { !cWnQRIt_F for(int i=1;;i++) j>0~"A { 9#;UQ.qA String header=con.getHeaderFieldKey(i); igW>C2J if(header!=null) 3[jk}2R';p //responseHeaders.put(header,httpConnection.getHeaderField(header)); ^:RDu q Utility.log(header+" : "+con.getHeaderField(header)); Nh[{B{k else Uieg4I ro break; UT9=S21 } j;k(AM< } 92k}ON -~HlME*~f [[[QBplJ public void splitterStop() c[Mz#BWG { (Rc0 l; bStop = true; U "qO&;m } ]PnE% ~"*;lT5KX B43o_H|s } r]=3aebR. j{nkus2 kPVP+}cA /* diLjUC`69 **FileAccess.java ,QpDz{8 *//文件访问(定位,写) d\ &jl`8* package NetFox; +(3PY e\ import java.io.*; ]rh)AE!Y( "iof -b=ys A/U tf0{3" public class FileAccessI implements Serializable{ n]B)\D+V^ sv^;nOAc //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 mP)<;gm, RandomAccessFile oSavedFile; pr-{/6j6 long nPos; Z6b3gV X
|f'e@ .~5cNu'#m public FileAccessI() throws IOException K6,5C0 { Oed&B this("",0); 7 #,+Q(2 } (WW,]#^
"gCSbMq(Vq S)"5X)mq public FileAccessI(String sName,long nPos) throws IOException |7zm!^t$ { ]sjOn?YA+ oSavedFile = new RandomAccessFile(sName,"rw"); 2="C6
7TK this.nPos = nPos; tE{7S/?h oSavedFile.seek(nPos); l!ye\ } O'."ca]:5 ?.A6HrAPB 'ce9v@(0 public synchronized int write(byte[] b,int nStart,int nLen) $`'^&o;&f { <,0&Ox int n = -1; 4(JxZ49 try{ >?e*;f$VdJ oSavedFile.write(b,nStart,nLen); e_ 6
i896 n = nLen; JoZC+G } 0;TMwE catch(IOException e) sZ'3PNpCP { ?NI)3-l e.printStackTrace (); %!rsu-W:Y } ,XP9NHE i=2+1;K #U/B,`= > return n; 2$NP46z} } V!KtF y&__2t^u }qz58]fyx } %
wRJ"T`Tt q#\eL~k WaMn[/{ /* +N4h
Q" **SiteInfoBean.java 9Zrn(D */ *8XGo package NetFox; .^kTb2$X l:@.D|(o3 I)B2Z(<Q public class SiteInfoBean { m Xw1%w[* !9)*. 9[8 n?
s4"N6 private String sSiteURL; //Site's URL 1xtbhk]D private String sFilePath; //Saved File's Path Vxgc|E^J private String sFileName; //Saved File's Name ^U_jeAuk8[ private int nSplitter; //Count of Splited Downloading File k LD)<D &2\.6rb. b'-gy0 public SiteInfoBean() %n}]$
d {//nSplitter的缺省值为5 M(3E
b;` //default value of nSplitter is 5 R1q04Zj{2 this("","","",5); gieX`} } :,VyOmf 3YT _GW{ 'ZDa *9nkF public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) Dkdm~~Rr { \aW5V: ? sSiteURL= sURL; Hh@mIusj sFilePath = sPath; v5$zz w sFileName = sName; -=qmYf this.nSplitter = nSpiltter; fCVSVn"o Yp
?
2< |R[m&uOib } H{GbOI. cL
WM]\Y N]=.I public String getSSiteURL() uPp(l4(+ { 0^[$0]Mt[ return sSiteURL; fg1 zT~ } 03#_ ( yz+r@I5 ?)PcYrV public void setSSiteURL(String value) A qm0|GlJ { L"b5P2{c sSiteURL = value; j/Kw-h ,5" } Kc{wv/6}T uuC/F_='B iCEX|Tj; public String getSFilePath() n+i}>3'A { FP\[7?ZLn return sFilePath; ?QMs< } -zTeIvcy5 $i`YtV kdo)y(fn@ public void setSFilePath(String value) FVpe*] { 3sw1y sFilePath = value; ~|!lC}!IKL } eeX>SL5'i 0!zWXKX 2Vi[qS^ public String getSFileName() JL$RBr { O,;SA return sFileName; M>^IQ } G
dooy~cn AUq?<Vg\ /;>EyWW public void setSFileName(String value)
6$Dbeb { PQs9@]w[ sFileName = value; 2KX *x_- } }$UFc1He\J P6?Q;-\q0 w7W-=\Hvh public int getNSplitter() #nd,c n { #*`|}_6L return nSplitter; 8_LDS } r#j*vO ' := 8vy RU'J!-w{ public void setNSplitter(int nCount) HvngjP{> { _1Eyqh`oh nSplitter = nCount; ls5S9R 5 } Cm&itG } Tv KX8 m" S,v`rmI - t+Mh. /* 'F~u \m=E **Utility.java g?`J ,*y */ I
F@M package NetFox; Nf~<xK $OO[C={v[ g=%&p?1@E public class Utility { ^Ve^}|qPc ~Mx
fud <vrx8Q*6 public Utility() (AS%P? { nZ*P:K t: nGt8u4gcP MoA{ /{ } g,;MV7yE JB|I/\(A //线程睡眠 tX_eN public static void sleep(int nSecond) (!b:
gG { 6IX!9I\sT try{ 8+u8piG Thread.sleep(nSecond); gM*s/,;O" } Vh<`MS0X catch(Exception e) JjmL6(*ui { (X9V-4 e.printStackTrace (); g DhwJks } A"'MRYT` } {
nV zN( >&VL2xLy //日志 %L/=heBBd public static void log(String sMsg) (pmo[2kg { 6~}H3rvO} System.err.println(sMsg); EDo
( } |h7v}Y A=$oYBB W)#`4a^xj7 public static void log(int sMsg) 5c"kLq6r { E;qwoTmul System.err.println(sMsg); VC.?]'OqD } qEAF!iB]L } 5-OvPTY`M HZ}*o%O I ?>#neHc6 /* <%z/6I
Af| **TestMethod.java B4}XK=) */ q
:bKT#\ package NetFox; ]Q3Gj@6 8VZ-`?p
zCHr public class TestMethod { p{rS -`I xeI{i{8 "YL-!P public TestMethod() :3B\,inJ { ///xx/weblogic60b2_win.exe /Uc*7Y5j try{ _#C}hwOR>X SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); Xo`1#6xsE //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); L,6Y=? SiteFileFetch fileFetch = new SiteFileFetch(bean); v\ Ljm,+ fileFetch.start(); |=LkV"_v } FT~^$)8= catch(Exception e){e.printStackTrace ();} 4i,SiFKB Bu1z$#AC #lF<="y%X } K(gj6SrjV *3$,f>W^ HhvG#Sam! public static void main(String[] args) {<kG{i/ { z (3"\ ^T new TestMethod(); 8|({
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