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/* BQm H9g|2 **SiteFileFetch.java `.n[G~*w~1 */ ]_-<[0 package NetFox; B!,})F$x import java.io.*; C@K@TfK!M import java.net.*; ,+2ytN* !=ZbBUJF WHU&9N public class SiteFileFetch extends Thread { .; :[sv) )%*uMuF IE3GM^7\ SiteInfoBean siteInfoBean = null; //文件信息Bean sYvO"| long[] nStartPos; //开始位置 mFT[[Z# long[] nEndPos; //结束位置 uvT]MgT FileSplitterFetch[] fileSplitterFetch; //子线程对象 l?ofr*U&-x long nFileLength; //文件长度 es.`:^A boolean bFirst = true; //是否第一次取文件 2lQ'rnqS) boolean bStop = false; //停止标志 rK];2[U File tmpFile; //文件下载的临时信息 Zcc6E2 DataOutputStream output; //输出到文件的输出流 IKpNc+;p |[gnWNdR$M //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) *F=wMWa public SiteFileFetch(SiteInfoBean bean) throws IOException 2Ddrxc>48 { hF6EOCY6D siteInfoBean = bean; )4j#gHN\ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); &0M^UvO tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 98x(2fCvF( if(tmpFile.exists ()) WFtxEIrl3j { GX\/2P7CZ bFirst = false; " 4s,a read_nPos(); (d_{+O" } _,5(HETE2 else U:ZklDW { #\w~(Nm- nStartPos = new long[bean.getNSplitter()]; Rf7py ) nEndPos = new long[bean.getNSplitter()]; ^}9Aq $R }
[~ fJ/ vQztD_bX% `6UW?1_Z5 9hcZbM] } uRJLSt9m f ^z7K R7+k=DI public void run() !
XA07O[@ { e%"L79Of6) //获得文件长度 ceAK;v
o //分割文件 lv,<[Hw1 //实例FileSplitterFetch <jfi"SJu //启动FileSplitterFetch线程 2Ui)'0 //等待子线程返回 {4UlJ,Z.n try{ x2;92I{5C, if(bFirst) RoPz?,u { 6Vi #O^> nFileLength = getFileSize(); iugTXZ( if(nFileLength == -1) 'R= r9_% { -]HO8}-Rjs System.err.println("File Length is not known!"); ?mnwD ]u } M++*AZ else if(nFileLength == -2) A-uEZj_RD= { r'-)@| System.err.println("File is not access!"); LDO@$jg } s>^*GQw else (Zx;GS { ]e 81O#t3 for(int i=0;i<nStartPos.length;i++) R:zjEhH) { 8z\WyDz nStartPos = (long)(i*(nFileLength/nStartPos.length)); cvi+AZ= } C^]bXIb for(int i=0;i<nEndPos.length-1;i++) Bx;bc { I
91`~0L* nEndPos = nStartPos[i+1]; Qr$uFh/y } {V,rWg nEndPos[nEndPos.length-1] = nFileLength; BHqJ~2&FDW } U_Id6J]8 } :43K)O" WnU"&XZ 76(&O //启动子线程 >PfYHO fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; DM"`If%3j for(int i=0;i<nStartPos.length;i++) -&y{8<bu4H { ]Ocf %( fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), a'rN&*P siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ^!!@O91T nStartPos,nEndPos,i); RR*<txdN Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); n"$D/XJO fileSplitterFetch.start(); %mg |kb6n } =D<46T=(RB // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 1vu=2|QN siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); UPA))Iv> // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", E: L =>} nEndPos = " + nFileLength); ^7V9\Q9 // fileSplitterFetch[nPos.length-1].start(); aV,>y"S c"v#d9 Kmk< //等待子线程结束 XQ.JzzY$ //int count = 0; j8YMod= //是否结束while循环 K>"M#T boolean breakWhile = false; \,oT(p4N%M x4Y+?2 GjfY while(!bStop) ?&j[Rj0pH {
JstX# z write_nPos(); 6uOR0L Utility.sleep(500); >n{(2bcFs breakWhile = true; 9co1+y=i{ k5P&F Kw+?Lowp for(int i=0;i<nStartPos.length;i++) X2/`EN\ { s+$l.aIO! if(!fileSplitterFetch.bDownOver) %HpTQ { *4dA(N\k" breakWhile = false; ~W_m<#K( break; #92:h6 } 1ki##v[ W8 } 8J7xs6@ if(breakWhile) ; P&Ka break; W:ih#YW_F %DbL|;z1 y!h$Z6. //count++; xzbyar< //if(count>4) OIe {Sx{y // siteStop(); )UO:J7K } ==l p\ YR=<xn;m. cL7je System.err.println("文件下载结束!"); HJ:s)As } &NL=Bd catch(Exception e){e.printStackTrace ();} r*OSEzGUz } 1.4]T, ` %e+hM $Q &>ii2% 4 //获得文件长度 k:nr!Y< public long getFileSize() TwqyQ49 { x}?y@.sn8 int nFileLength = -1; j*Ta?'* try{ E;fYL]j/oZ URL url = new URL(siteInfoBean.getSSiteURL()); {+0]diD HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); |K YON Q httpConnection.setRequestProperty("User-Agent","NetFox"); *RD9gIze ><mZOTn e; y+)][Wa0 int responseCode=httpConnection.getResponseCode(); ]8NNxaE3 ( if(responseCode>=400) q&B'peT { rbHrG<+7zO processErrorCode(responseCode); 1Thr74M return -2; //-2 represent access is error EW%%W6O6 } Cg?D<l4 cpF\^[D Jx9S@L` String sHeader; B;r U s4<[f%^ Am'5| for(int i=1;;i++) >Vy=5)/i { WO?EzQ ? //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); mk2T //Utility.log(in.readLine()); #oSQWC=T sHeader=httpConnection.getHeaderFieldKey(i); OB)Vk if(sHeader!=null) zmQ V6o=k { T^B&GgW if(sHeader.equals("Content-Length")) *91iFeKj= { %6j|/|#] nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); rk*Igqf break; c9/w-u~j } z9}rT<hy } y44FejH(v else 'g$~ij ;x break; .^>[@w3 } <mjH#aSy } )HNbWGu catch(IOException e){e.printStackTrace ();} C18pK8- catch(Exception e){e.printStackTrace ();} }jBr[S5 }00mJ]H( mq`N&ABO!K Utility.log(nFileLength); $IX>o&S@| 4Z)`kS}=] g6o-/A!Q3 return nFileLength; m8,P-m } JM!rop^ N3g[,BE :BKY#uH~ //保存下载信息(文件指针位置) Q%KH^< private void write_nPos() z)xGZ*{= { )28Jz6.I try{ %Ez%pT0TQ# output = new DataOutputStream(new FileOutputStream(tmpFile)); A^
$9[_ output.writeInt(nStartPos.length); wvvMesX<L for(int i=0;i<nStartPos.length;i++) xfCq;?MupW { #qWa[kB // output.writeLong(nPos); AX}l~
sv output.writeLong(fileSplitterFetch.nStartPos); gm~Ka%O|F output.writeLong(fileSplitterFetch.nEndPos); <use+C2 } ~j}di^<{ output.close(); G`!#k!&r } 2c@4<kyfP catch(IOException e){e.printStackTrace ();} Yf&x]<rkCp catch(Exception e){e.printStackTrace ();} g#ubxC7t< } kKAK;JQ TzmoyY L^3~gZ //读取保存的下载信息(文件指针位置) +Wh0Of private void read_nPos() w]X~I/6g { +Rn]6}5m\ try{ =Y#)c]` DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); T5?@'b8F6 int nCount = input.readInt(); [U@#whE O nStartPos = new long[nCount]; >M[wh> nEndPos = new long[nCount]; Zy _A3m{ for(int i=0;i<nStartPos.length;i++) sYM3&ikyHI { Tu95qL~^ nStartPos = input.readLong(); uoR_/vol8 nEndPos = input.readLong(); Tm~a&p } uq~$HXdc input.close(); ce!0Ws+ } ?ORG<11a catch(IOException e){e.printStackTrace ();} <x@brXA catch(Exception e){e.printStackTrace ();} ' _Ij9{M } pE<dK.v6 [t/7hx"2t PB00\&6H private void processErrorCode(int nErrorCode) V`qHNM/t { Mu$9#[/ System.err.println("Error Code : " + nErrorCode); @T[}]e } hi4#8W `6;%HbP$W+ 9gR@Q%b) //停止文件下载 Wm\HZ9PN public void siteStop() .si!`?K%[ { ew
-5VL bStop = true; dlkxA^ for(int i=0;i<nStartPos.length;i++) \g&P5 fileSplitterFetch.splitterStop(); ={ P a<-NB9o~v k/bY>FY2r } hAq7v']m } V("@z<b| //负责部分文件的抓取 +EG?8L,z **FileSplitterFetch.java 7(c7- */ ZdG?fWWA package NetFox; uj#bK
7 j6<o,0P 1}nrVn[B9 import java.io.*; <Vucr import java.net.*; GBnf]A,^@ nP`#z&C _"Yi>.{] public class FileSplitterFetch extends Thread { ? t<yk(q HUUN*yikj sk*AlSlM String sURL; //File URL <j
CD^ long nStartPos; //File Snippet Start Position =(\
/+
0-[ long nEndPos; //File Snippet End Position K[}5bjh> int nThreadID; //Thread's ID aVTTpMY boolean bDownOver = false; //Downing is over 2P)*Y5`KBH boolean bStop = false; //Stop identical J*HZ=6L FileAccessI fileAccessI = null; //File Access interface 7;0$UYDU* h\C" ti2 f Cg"tckE public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException YI[y/~! { o[<lTsw< this.sURL = sURL; 2^Y@e=^A this.nStartPos = nStart; Op''=Ar#sh this.nEndPos = nEnd; !<`}mE!: nThreadID = id; J*V@huF fileAccessI = new FileAccessI(sName,nStartPos);//定位 jm~(OLg } %&EDh2w> $'m&RzZ WGy3SV ) public void run() xnz(hz6 { }~/u%vI@M5 while(nStartPos < nEndPos && !bStop) *WS'C}T { A\Ax5eeL h$\+r< Y ;qA@| try{ *hugQh]a URL url = new URL(sURL); 8&d s HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 2RW^Nqc9 httpConnection.setRequestProperty("User-Agent","NetFox"); <$m=@@qg String sProperty = "bytes="+nStartPos+"-"; bD*z"e httpConnection.setRequestProperty("RANGE",sProperty); gZ{q85C.> Utility.log(sProperty); |n9q4*dN m5Q?g8 =lyP &u InputStream input = httpConnection.getInputStream(); F|Y}X|x8Q //logResponseHead(httpConnection); b
\pjjb[ "l83O8 L |q0MM^%" byte[] b = new byte[1024]; ZH
o#2{F int nRead; 4[q'1N6- while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) X9:4oMux7 { Z{'.fq2A nStartPos += fileAccessI.write(b,0,nRead); .)eJL //if(nThreadID == 1) QtF'x<cB // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); t,CC~ } zxo0:dyw7 g)o?nAr ,2*^G;J1 Utility.log("Thread " + nThreadID + " is over!"); K@0gBgN bDownOver = true; 0/r\#"+XT //nPos = fileAccessI.write (b,0,nRead); S`N_}, } (YOp catch(Exception e){e.printStackTrace ();} \1 ^qfw } `#v(MK{9+V } HizMjJ| ="M7F0k gWqO5C~h //打印回应的头信息 9lT6fW`v1Q public void logResponseHead(HttpURLConnection con) xt{f+c@P {
k{{ iF for(int i=1;;i++) ?AL;m.X-@ { C^dnkuA String header=con.getHeaderFieldKey(i); t&GjW6]W if(header!=null) k@,&'imx //responseHeaders.put(header,httpConnection.getHeaderField(header)); xr }jw Utility.log(header+" : "+con.getHeaderField(header)); ]GSs{'UhB else o*d+W7l break; U}r^M(
s! } 6f$h1$$)^ } Y<A593 Wa/&H$d\u@ Iy2KOv@a5 public void splitterStop() +`@)87O { d8Keyi8[ bStop = true; >x$eKN } 2E@ ! 4V$DV!dPQ} Hg~O0p}[ } Cfz020u`g /1h
0l; >:2B r(S /* `#X\@?'5 **FileAccess.java ka3(sctZ5 *//文件访问(定位,写) w]BZgF. package NetFox; l1Zf#]x import java.io.*; pi'w40!: L(a){<c (A6-9g> public class FileAccessI implements Serializable{ B{:JD^V! ]3+xJz~= //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 DOr()X RandomAccessFile oSavedFile; z[7j`J|Kk long nPos;
>&1MD} F<KUVe %E!^SF?Y public FileAccessI() throws IOException U~,~ GU=X { r9x.c7=O this("",0); Sdc
yL%6! } 1T{A(<:o$ '
9K4A'2[ SiD [54OM public FileAccessI(String sName,long nPos) throws IOException M]S&vE{D { CB<i oSavedFile = new RandomAccessFile(sName,"rw"); Ol }^'7H this.nPos = nPos; :r<uH6x| oSavedFile.seek(nPos); M_o<6C } L_>j
SP 1gq(s2izy '(JSU public synchronized int write(byte[] b,int nStart,int nLen) (6xrs_ea { W!$aK )]4u int n = -1; 4t(V)1+ try{ X[ERlw1q4Q oSavedFile.write(b,nStart,nLen); <f
l-P n = nLen; |@J:A! } ``~7z;E%@ catch(IOException e) RCFocOOn { =:T pH>f* e.printStackTrace (); 6cCC+*V{ } J/M_cO*U hf2Q;n&V 4M)
s return n; cx]&ae * } r!qr'Ht< &_q&TEi O-rHfIxY } _N4G[jQLJ K._tCB: .%{3#\ /* (T1)7%Xs **SiteInfoBean.java MuzlUW ] */ /cPezX package NetFox; p[E}:kak_- jU1 ([(?" /{eD##vhP public class SiteInfoBean { 5*.JXxE;U @M[t| :iWW2fY private String sSiteURL; //Site's URL icq!^5BzL private String sFilePath; //Saved File's Path l_K=7\N private String sFileName; //Saved File's Name ZK =`Y@ private int nSplitter; //Count of Splited Downloading File alQMPQVin }O_kbPNw [:cy.K!Uo% public SiteInfoBean() IMaa#8, {//nSplitter的缺省值为5 y be:u //default value of nSplitter is 5 jB+K)NXHL this("","","",5); +RXKI{0Km } ]a4rA+NFLB 7Y`/w$ &xKln1z' public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) `)sC".b7
{ ('H[[YODh sSiteURL= sURL; (*{Y#XD{ sFilePath = sPath; K-%x]Fp= sFileName = sName; rkdf htpI this.nSplitter = nSpiltter; W_w^"' ^gP pmb<x dso6ZRx }
T06BrX =o g5Mh, gIGyY7{(s8 public String getSSiteURL() `zQ2i}Uju { ;?-A4!V, return sSiteURL; Q8]lz} } mB.ybrig M4MO)MYJ 8SV.giG; public void setSSiteURL(String value) 5u(,g1s}UZ {
: ,0F_["3 sSiteURL = value; }/dGC;p" } AoL2Wrk]\B "pQFIV, m tPmVze public String getSFilePath() Ie12d@ { *{_WM}G return sFilePath; wH?r522`c } kU*Fif <4l;I*:2& 0keqtr public void setSFilePath(String value) J |$(O$hYy { E=G"_
^hCE sFilePath = value; n U0 } tc.`P]R
/'
+GYS w;e42.\ public String getSFileName()
vvWje:H { M/!5r return sFileName; rMV<}C ^ } @;^7kt #CRAQ#:45( 8-f2$ public void setSFileName(String value) 0uw3[,I
{ 28u3B2\$ sFileName = value; @<^_ _." } h;s~I/e( rM|] }M=_V B#zu<z public int getNSplitter() ap
5D6y+ { ( E8(np return nSplitter; e*nT+Rp } +{eZ@ KG2ij~v ;!k{{Xndd public void setNSplitter(int nCount) f:w#r.] { >Rnj6A|Q nSplitter = nCount; 1u%e7 } :!fP~(R'm } equ|v~@y 9f wFSJx #z(JYw, /* vX9B^W||x **Utility.java K #f*LV5 */ +"~~;J$ package NetFox; \!]Zq#*kH P%CNu W5&;PkhQ6 public class Utility { c@uNA0
p \W;+@w|c gG>|5R0 public Utility() o<J_?7c~} { 6wmMg i_m _&]B N~Kl{">` } cb9ndZ)v. fw[Z7`\Q5 //线程睡眠 8M"0o}wx public static void sleep(int nSecond) 0/vmj,&B( { P
~sX S try{ IM^K]$q$47 Thread.sleep(nSecond); !_ng_,J } 2$Fy?08q catch(Exception e) U}=o3u { &~6W!w e.printStackTrace (); Ki8]+W37 } &:}{?vU } e*zt;SR }8zw| (GR, //日志 ~.dmfA{ public static void log(String sMsg) t/3t69 \x { tbNIl cAWS System.err.println(sMsg); A<+veqb4 } Zeeixg-1< GJ3@".+6 t3w:!'Ato public static void log(int sMsg) @5C!`:f { K).Gj2 $ System.err.println(sMsg); AwC"c ' } @_+B'<2 } Ag6^>xb^ JF+E.-fy$ t& *K /* .[qm>j, **TestMethod.java T+0Z2H */ d7*fP S package NetFox; pI>[^7 ';\v:dP m"r=p public class TestMethod { :O~*}7G f\{ynC2m N1vPY]8 public TestMethod() dpTeF`N { ///xx/weblogic60b2_win.exe iz0GL&< try{ - fB;pS, SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); J'=iEI //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); #ox&=MY SiteFileFetch fileFetch = new SiteFileFetch(bean); ==?!z<I.d fileFetch.start(); GjfPba4> } G%RL8HU catch(Exception e){e.printStackTrace ();} 3om_Z/k nc.(bb), *MG*]\D } Hy9c<X[F9 g9XAUZe @uJ^k
>B public static void main(String[] args) ?uBZ"^' {
RM(MCle} new TestMethod(); U=G}@Y } L
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