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/* Dm@wTt8N( **SiteFileFetch.java fwy-M: */ 8ycmvpJ package NetFox; )shzJ9G import java.io.*; O<R6^0B42 import java.net.*; xM1>kbo| W|U!kqU h(,SAY_ public class SiteFileFetch extends Thread { hT&,5zaWdv {&Kq/sRz 5zlgmCGow SiteInfoBean siteInfoBean = null; //文件信息Bean q8:Z.<%8 long[] nStartPos; //开始位置 9T47U; _) long[] nEndPos; //结束位置 4#5w^ FileSplitterFetch[] fileSplitterFetch; //子线程对象 q Yg4H|6 long nFileLength; //文件长度 vqLC?{i+ boolean bFirst = true; //是否第一次取文件 d[.kGytUt boolean bStop = false; //停止标志 WUid5e2 File tmpFile; //文件下载的临时信息 /j]r?KAzw DataOutputStream output; //输出到文件的输出流 @!\g+z_" [aF?1KxNMt //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) x@+m_y public SiteFileFetch(SiteInfoBean bean) throws IOException -aiQp@^/J { G"jKYW siteInfoBean = bean;
q+{-p?;; //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); U[zY0B tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); \lK iUy/ if(tmpFile.exists ()) H_'i.t 'SS { YJw 9 d] bFirst = false; ]McLace& read_nPos(); ]1 #& J( } -ob_]CKtJ~ else 9l+`O0.@ { a1p:~;f}[ nStartPos = new long[bean.getNSplitter()]; DBl.bgf nEndPos = new long[bean.getNSplitter()]; lrjlkgSN } ,P^pDrc 7z
\I\8 'sJ=h0d_[V 8T'=lTJ } L!E/ )#{ n4%|F'ma MN2# public void run() BRP9j
y { Q5e ,[1 //获得文件长度 /"?y @;Y~ //分割文件 omM*h{z$$ //实例FileSplitterFetch buo_H@@p{s //启动FileSplitterFetch线程 yhe$A<Rl= //等待子线程返回 .~V0>r~my try{ w:Fi
2aJ if(bFirst) 8uoFV=bj\ { b
r)o Sw nFileLength = getFileSize(); %3'4QmpR if(nFileLength == -1) C
#ng`7 q { 9Ot;R?>( System.err.println("File Length is not known!"); U">D_ 8 } GzK{.xf else if(nFileLength == -2) aG?ko*A; { 8WU
UE=p System.err.println("File is not access!"); [~bfM6Jw } )t{oyBT else chsjY]b { P}o:WI4.cB for(int i=0;i<nStartPos.length;i++) GZ\;M6{oh { 58*s\*V`\ nStartPos = (long)(i*(nFileLength/nStartPos.length)); SN|EWe^ } (yE?)s for(int i=0;i<nEndPos.length-1;i++) XOO!jnQu { St&xe_:^< nEndPos = nStartPos[i+1]; |XxA Fje } 9Y1&SEsNX nEndPos[nEndPos.length-1] = nFileLength; ~$>l@> xX } 9^J8V]X } nBL7LocvR ~C<
X~$y& ;]?1i4p) //启动子线程 W-%oj.BMA fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; I#Ay)+D for(int i=0;i<nStartPos.length;i++) B:5(sK { @D8c-`LC"* fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), :(?joLA siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), m;{_%oQ; nStartPos,nEndPos,i); cj-P&D[Ny[ Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); .]%PnJM9K fileSplitterFetch.start(); qIK"@i[
uq } I!.o&dk // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Rd;k> e siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); R8UtX9'*sa // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", <3z]d?u nEndPos = " + nFileLength); AJSe +1 // fileSplitterFetch[nPos.length-1].start(); Lm\N` PJN TIa au2ieZZ[ //等待子线程结束 z
%` \p //int count = 0; T%K(opISc( //是否结束while循环 tfj6#{M5 boolean breakWhile = false; i$)bZr\ &^4\Rx_I _*6nTSL while(!bStop) r_T\% { 6
k+FTDL write_nPos(); J&S$F:HM Utility.sleep(500); O>xGH0H breakWhile = true; @HJ&"72$< =6imrRaaV -,Cx|Nl for(int i=0;i<nStartPos.length;i++) 9_[TYzpB! { 5+b[-Daz if(!fileSplitterFetch.bDownOver) X>2_Gol! { oC>e'_6_b breakWhile = false; y5iLFR3z break; }kI-UEn$EP } on $?c } /HgdTyR) if(breakWhile) Adgh:'h break; Oi&.pY:X- !7@IWz(," qyv9]Q1 //count++; %d*k3f
} //if(count>4) mq$'\c
9. // siteStop(); 0/S|P1!b } }N(-e$88 uQWJ7Xm vGO- a2Z System.err.println("文件下载结束!"); EsXCi2]1 } D4<nS<8 catch(Exception e){e.printStackTrace ();} Bp6jF2 } v9INZ1# v x)l}d3
g}0}$WgH: //获得文件长度 !!4_x public long getFileSize() x;S v& { b gGd int nFileLength = -1; jI(~\` try{ r9 'lFj URL url = new URL(siteInfoBean.getSSiteURL()); (%"M% Qko HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); P0S;aE httpConnection.setRequestProperty("User-Agent","NetFox"); rA&|!1q"B mf6?8!O}> y$7Fq' int responseCode=httpConnection.getResponseCode(); /8@JWK^I{ if(responseCode>=400) X0J@c "%0 { a \B<(R. processErrorCode(responseCode); e~=fo#*2?@ return -2; //-2 represent access is error q.FgX } 0e9W>J9 /]2-I_WB 16)@<7b]J String sHeader; |_8::kir: zg2A$Fd[j bwUsE U 0 for(int i=1;;i++) xi8RE@gm { P!:Y<p{=> //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); `%p}.X //Utility.log(in.readLine()); &K2[>5
mG sHeader=httpConnection.getHeaderFieldKey(i); } WY7!Y if(sHeader!=null) PcC9)x { p>h B &h if(sHeader.equals("Content-Length")) DtG><g}[] { |1X^@ nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); &\4AvaeA8y break; R<lj$_72Q } 0*YLFqN } ?Q;8D@
else zz 7m\ break; Kc_QxON4 } YOwo\'|= } :M9'wg catch(IOException e){e.printStackTrace ();} KG)7hja<6g catch(Exception e){e.printStackTrace ();} UOSa`TZbZ ."l@aE=| 'W usEME Utility.log(nFileLength); sh[Yu 7g}4gX's FYR%>Em return nFileLength; j!GJ$yd=-6 } a{^[< HiCNs;t o{pQDI {R //保存下载信息(文件指针位置) eG9tn{ private void write_nPos() HE(|x1C)j { ]S<eO6z try{ wQWokpP;T7 output = new DataOutputStream(new FileOutputStream(tmpFile)); 4_3Jpz* output.writeInt(nStartPos.length); > xkl7D for(int i=0;i<nStartPos.length;i++) ^%-$8sV { 5t#+UR // output.writeLong(nPos); su/l'p' output.writeLong(fileSplitterFetch.nStartPos); )Y}t~ Zfx output.writeLong(fileSplitterFetch.nEndPos); SLpB$puS } $r *7)/ output.close(); LOpnPH` } csz/[* catch(IOException e){e.printStackTrace ();} HGfV2FtT z catch(Exception e){e.printStackTrace ();} 6 /gh_'& } ]]`hnzJX DxR__ &H$
3`"p5u //读取保存的下载信息(文件指针位置) c-3AzB#[ private void read_nPos() R}c,ahd { DvHcT]l>5 try{ ^;@q^b)ZP DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 9KRHo%m int nCount = input.readInt(); TKj8a(R_ nStartPos = new long[nCount]; K,bv\j;f nEndPos = new long[nCount]; UhYeyT for(int i=0;i<nStartPos.length;i++) U(3+*'8r,1 { /+pbO-r W* nStartPos = input.readLong(); uFOxb}a9v nEndPos = input.readLong(); a'U7 t } =`[08 input.close(); ^5j| } mv|eEz)r catch(IOException e){e.printStackTrace ();} e p~3e5 catch(Exception e){e.printStackTrace ();} V$%%nG uE } Pj>r(Cv N ncur] B~QX{ private void processErrorCode(int nErrorCode) i<&*f}=' { 7YsBwo System.err.println("Error Code : " + nErrorCode); >Lp^QP1gU } %l%5Q;t -hj@^Auf #Mw|h^Wm //停止文件下载 u"XqWLTV public void siteStop() xr+K:
bw { |F[E h
~ bStop = true; Vd~{SS2> for(int i=0;i<nStartPos.length;i++)
GY,l&.& fileSplitterFetch.splitterStop(); ]J+}WR T#xCu|5 k v1q\ } ,IoPK!5xy } T{3C3EE?] //负责部分文件的抓取 hX?L/yf **FileSplitterFetch.java !cPiH6eO */ p s=jGh[ package NetFox; < gB>j\: h\".TySz lb ol+O65 import java.io.*; 7;RhA5M import java.net.*; 8 P85qa@w ,}2yxo;i H$TYp public class FileSplitterFetch extends Thread { 0KO_bF#EB= *c4uCI:0t rTYDa3 String sURL; //File URL sc'QNhrW long nStartPos; //File Snippet Start Position QLrFAV long nEndPos; //File Snippet End Position Wc [@, int nThreadID; //Thread's ID 4of3#M boolean bDownOver = false; //Downing is over Ac;rMwXk# boolean bStop = false; //Stop identical qOYCQ FileAccessI fileAccessI = null; //File Access interface R+k-mbvnt vKN"o* q H6(kxpOI\ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException s8Kf$E^?e. { 'b#RfF,7H} this.sURL = sURL; 7|LJwXQ- this.nStartPos = nStart; qawb9Iud0 this.nEndPos = nEnd; XlIRedZ{ nThreadID = id; .r[b!o^VR fileAccessI = new FileAccessI(sName,nStartPos);//定位 P.Pw.[:3 } =KqcWN3k uqwB`<>KJ fmZ5rmw! public void run() P5/K?I~/So { 7sKN` while(nStartPos < nEndPos && !bStop) $s<,xY 9 { &}wrN(?w J.Mj76\_ So; ; try{ hO^8CA,5 URL url = new URL(sURL); nD6mLNi%a HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); CY;ML6c@ httpConnection.setRequestProperty("User-Agent","NetFox"); d2lOx|jt String sProperty = "bytes="+nStartPos+"-"; 4<._)_m httpConnection.setRequestProperty("RANGE",sProperty); oR (hL4Dc Utility.log(sProperty); RaT(^b( n B4)% y;Xb."e~ InputStream input = httpConnection.getInputStream(); sPY*2B //logResponseHead(httpConnection); ofbNg_K> @/h_v#W S6-)N(3| byte[] b = new byte[1024]; s\QhCS int nRead; RK?b/9y while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) lxoc.KDtR { cAq>|^f0a nStartPos += fileAccessI.write(b,0,nRead); 2GOQ| Z //if(nThreadID == 1) &09z`*, // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); }@MOkj } >!O3 jb k Q!K@ pFi.?|6" Utility.log("Thread " + nThreadID + " is over!"); & V:q}Q bDownOver = true; Y: &?xR //nPos = fileAccessI.write (b,0,nRead); [^xLK } xc dy/J& catch(Exception e){e.printStackTrace ();} #-
$?2?2 } nN" Y~W^k } <,p|3p3 3qOq:ZkQ (7BG~T //打印回应的头信息 qS<a5 `EA public void logResponseHead(HttpURLConnection con) mqgA { 0VC8'6S_k for(int i=1;;i++) owL>w { ry9%Y3 String header=con.getHeaderFieldKey(i); ~qQSt% if(header!=null) 58\rl G //responseHeaders.put(header,httpConnection.getHeaderField(header)); v#*9rNEj0 Utility.log(header+" : "+con.getHeaderField(header)); WNSf$D{p else ETvn$ Jdp break; %,f|H :+>u } RM\it"g } h(]aP<49L Dyv 6K_, v}p'vh^8B public void splitterStop() h|OqM:J; { +c4]}9f! bStop = true; N*z_rZE } ']1\nJP[=X ?"f\"N q<(yNqMKP } K] ;` j`jF{k b !4-B
xeNY\ /* 3wZA,Z
**FileAccess.java HqNM3 1) *//文件访问(定位,写) g a|RW0 package NetFox; 3YT>3f!\
import java.io.*;
'o=`1I ;u`zZb=,[ JJ@O5 public class FileAccessI implements Serializable{ A41*4!L= eh_{- //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 $YuVM RandomAccessFile oSavedFile; c{4C4'GD long nPos; D?;8bI%" 2)}ic2]pn g]au|$L4 public FileAccessI() throws IOException P 1`X<A { z5G<h this("",0); <)n8lIK } #\9sCnb #T<<{ RA S1oRMd)r public FileAccessI(String sName,long nPos) throws IOException vi?{H*H4c { =^ur@E oSavedFile = new RandomAccessFile(sName,"rw"); :m*r(i3 this.nPos = nPos; k(l oSavedFile.seek(nPos); &?L
K>QV } )>,;
GVu" .ko8`J%%M 1_JtD|Jy public synchronized int write(byte[] b,int nStart,int nLen) df@I C@`pB {
fNb2>1 int n = -1; heQ<%NIA" try{ N-*
^V^V oSavedFile.write(b,nStart,nLen); )IUeWR n = nLen; vg@kPuOiO } uNnx
i catch(IOException e) L3[r7 b { [/_M!&zz2 e.printStackTrace (); H^y%Bi&^ } ;/gH6Z? !ceT>i90h 5Y<O return n; ]BAM _ } (p4|,\+ 9_yO6)` pw;
} "fWAp*nI3t
`I*W}5 /)I:Cz/f /* CZ2&9Vb9I **SiteInfoBean.java S!!i */ EHpIbj;n package NetFox; qMy>:,)Z vbT"}+^Sh -*q:B[d public class SiteInfoBean { \hGoD ^rF{%1 DT cp@(y$ private String sSiteURL; //Site's URL
L~F" private String sFilePath; //Saved File's Path OO)m{5r,{ private String sFileName; //Saved File's Name E.*TJ private int nSplitter; //Count of Splited Downloading File 6zuWG0t E/x2LYH EC[2rROn\ public SiteInfoBean() GilaON*pK. {//nSplitter的缺省值为5 y&8' V\ //default value of nSplitter is 5 Rou$`<{H this("","","",5); EOqvu=$6 } T\ ;7' #1-y[w/ Q'?{_ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) [UO?L2$& { aH@Ux?-} sSiteURL= sURL; 1&{]jG{# sFilePath = sPath; ;3ZHm*xJx sFileName = sName; Y{c_5YYf this.nSplitter = nSpiltter; zY?GO"U" W)WL1@!Z cEkf9:_La } qs\O(K8 A2Je*Gz 29:1crzx~ public String getSSiteURL() }T<[JXh=J { );4lM%]eb return sSiteURL; r>v_NKS]t } eq^<5
f _TF\y@hF*D Fa public void setSSiteURL(String value) $nR1AOm}.B { qmzg68 sSiteURL = value; h\+U+?u } r!/=Iy@ py9zDWk~ R@lmX%Z1 public String getSFilePath() 4VtI8f! { UhQsT^b_ return sFilePath; {(mT,}`4 } rn1^6qy) G2#={g{ /_Z--s>j public void setSFilePath(String value) HsA4NRF'7 { u\~dsD2)q sFilePath = value; H|a9};pO\ } 5|l&` fv` 5DgfrX |7@[+ public String getSFileName() 88 fH!6b { Az+}[t return sFileName; INca } p-]vf$u &\(p<TF W/*2I3a public void setSFileName(String value) ~jK'n4 { u,<#z0R|;$ sFileName = value; weMC9T)B } ~*-(_<FH i:ar{ q :W'Yt9v) public int getNSplitter() J23Tst#s { X+l&MD return nSplitter; sGx"ja+ } xyGk\= S rLMjN#`^ <DG=qP6O public void setNSplitter(int nCount)
VgfA&?4[ { anwMG0 nSplitter = nCount; .+1.??8:+ } sflH{!;p
} 0fgt2gA33 ZA4NVt.yN jq6BwUN /* Ap}^6_YXd **Utility.java Lf+M
+^l */ md`PRZzj@ package NetFox; 0(A(Vb5J.T y%.^|
G an+`>}]F public class Utility { lq2P10j@ A%H" a+ ICSi<V[y1 public Utility() $$E!u} { 2{!o"6t [t^Z2a{ H8[L:VeNT } Fb#_(I[aj wLeP;u1 //线程睡眠
NYwE=b~I public static void sleep(int nSecond) Gc= # { .ztO._J7f try{ ]^HlI4 z Thread.sleep(nSecond); hL:n9G } [a~|{~?8 catch(Exception e) IY$H M3t7 { ]IQTf5n e.printStackTrace (); xA|72!zk0P } N*.JQvbnr } zZ3Ko3L%g_ YGVj$\ //日志 NP%Y\%;l6 public static void log(String sMsg) |G.|ocj; { BElVkb System.err.println(sMsg);
LfD70r\ } YXCfP~i Y\!* c=@k =,B44:`r public static void log(int sMsg) JGH;&UYP { qsnZ?hXPp System.err.println(sMsg); -h&AO\*^W } >;Er[Rywr } B4k~~ ;| `9;:mR $ ^6=y4t=%F /* Y*-#yG9 **TestMethod.java H.sHXuu */ JTuU}nm+ package NetFox; {"<D$*K~ vu^ '+ky @d imZsi1 public class TestMethod { .
IBy' Ii"h:GY;\ )l}Gwd]h public TestMethod() BM+v,hGY { ///xx/weblogic60b2_win.exe
'UGkL; try{ _hgu: SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); sqkk4w1#C //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); h$`P|#V& SiteFileFetch fileFetch = new SiteFileFetch(bean); -nP
y?>p"| fileFetch.start(); AS[yNCsjC } p<#WueR[ catch(Exception e){e.printStackTrace ();} 5 rpX"( feOX]g#
qx3@]9 } $[5S M>e] b,]QfC 2y/|/IW= public static void main(String[] args) eh=.Q<N { HyKvDJ
3_ new TestMethod(); "F
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