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/* :w!hkUx# **SiteFileFetch.java >:4`y"0 */ C<3<,~gI package NetFox; 1;H"4u_IG& import java.io.*; T=)qD2? import java.net.*; Mm(#N/ Ix}6%2\ co3\1[q"b public class SiteFileFetch extends Thread {
)UM^#<- RgA"`p7{ /aMOZ=,q} SiteInfoBean siteInfoBean = null; //文件信息Bean k=[s%O6H long[] nStartPos; //开始位置 A= 5Ebu!z long[] nEndPos; //结束位置 0#Lmajs FileSplitterFetch[] fileSplitterFetch; //子线程对象 dzBP<Xyh long nFileLength; //文件长度 Z.u1Dz boolean bFirst = true; //是否第一次取文件 pA8As boolean bStop = false; //停止标志 e).;;0 File tmpFile; //文件下载的临时信息 9O:l0
l DataOutputStream output; //输出到文件的输出流 P!E2.K, CUYA:R<) //负责整个文件的抓取,控制内部线程(FileSplitterFetch类)
q:TNf\/o public SiteFileFetch(SiteInfoBean bean) throws IOException ,!b<SQ5M { P3: t
4^ siteInfoBean = bean; <K`E*IaW //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); bY=[ USgps tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); UUlz3"` if(tmpFile.exists ()) >>,G3/Zd* { #}FUa u$ bFirst = false; 5N;'CAk read_nPos(); #$-E5R;x } >*8V]{f9 else %z-*C'j5H { @)uV Fw"\ nStartPos = new long[bean.getNSplitter()]; (pd$?vRy nEndPos = new long[bean.getNSplitter()]; !43!JfD } \agZD+ :86:U 0^ JRo/ HY+ 32<D9_ } ;_e9v, =+Fb\HvX{ )6C+0b* public void run() 'UIFP#GtFO { :xPo*#[Z(A //获得文件长度 oT):#,s //分割文件 <.QaOLD //实例FileSplitterFetch %7 bd}sJ# //启动FileSplitterFetch线程 &sWr)>vs //等待子线程返回 [~s+,OO9) try{ *x|%Nua" if(bFirst) k.ou$mIY { Ig`q[o nFileLength = getFileSize(); Lj<TzPzg* if(nFileLength == -1) T,pr&1]Lw { B>^6tdz System.err.println("File Length is not known!"); Xb%q9Z } O8@65URKx else if(nFileLength == -2) tb+gCs'D { My8d%GfM System.err.println("File is not access!"); 8(%F{&<; } ltNCti{Q else lPR=C0h}@ { \%a0Lp{ I for(int i=0;i<nStartPos.length;i++) _YF>Y=D- { BV~J*e nStartPos = (long)(i*(nFileLength/nStartPos.length)); @*YF!LdU{M } 4>jHS\jc for(int i=0;i<nEndPos.length-1;i++) k4K.
mlIO { [gmov)\c nEndPos = nStartPos[i+1]; T7,]^
1 } ,TQec:B nEndPos[nEndPos.length-1] = nFileLength; t{]Ew4Y4%O } kXwAw]ogN } yW|J`\`^T ka9@7IFM u5oM;#{@- //启动子线程 6R n?pe^ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; %GhI0F # for(int i=0;i<nStartPos.length;i++) YhN<vZ}U!~ { |U|>YA1[b fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), + `|A/w siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), |UXSUP
@s nStartPos,nEndPos,i); c;VqEpsbl Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Dp([r fileSplitterFetch.start(); tAAMSb9[d } >O-KJZ'GV // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), E!9WZY siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 3a?-UT! // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", #f2Ot<#- nEndPos = " + nFileLength); Ek{Q NlQ]4 // fileSplitterFetch[nPos.length-1].start(); DSU8jnrL o}rG:rhIh f% pT-# //等待子线程结束 M =^d //int count = 0; }>@\I^Xm, //是否结束while循环 @_+aX., boolean breakWhile = false; `8!9Fp 4?R979 *S,~zOYN while(!bStop) u} ot-!}Q { TjUwe@&Rw write_nPos(); AP&//b,^M Utility.sleep(500); XY"b 90 breakWhile = true; Z 1HH0{q-A :PO./IBX xo[o^go for(int i=0;i<nStartPos.length;i++) /|?$C7%a\D { f^F;`;z if(!fileSplitterFetch.bDownOver) P 45Irir { Nfa&r breakWhile = false; [}L~zn6>?a break; ,H]%4@]|o } sO.MUj; } FIq'W:q: if(breakWhile) meX2Y; break; _S r}3 #V>R#Oh} MmT/J1zM //count++; &6sF wK //if(count>4) ER"69zQg|2 // siteStop(); ?NMk|+ } ^DYS~I%s BSm"]!D8* {-Y;! System.err.println("文件下载结束!"); <M:BN6-yG } c-+NWC catch(Exception e){e.printStackTrace ();} `zQuhD 8W } SQN?[v t1 3V>9to [^hW>O=@TN //获得文件长度 dNe!X0[ public long getFileSize() 6
U.Jaai: { &n<YmW?" int nFileLength = -1; pD{OB try{ h@%Xy(/m' URL url = new URL(siteInfoBean.getSSiteURL()); uxfh?gsL HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); F6\{gQ<E httpConnection.setRequestProperty("User-Agent","NetFox"); \YvG+7a :c*"Dx'D o 4F'z int responseCode=httpConnection.getResponseCode(); @)Vpj\jM-C if(responseCode>=400) $TUYxf0q { {nmG/dn{ processErrorCode(responseCode); Y%
iqSY return -2; //-2 represent access is error U)(R4Y6 v } zx#Gm=H4 3%POTAw% |1@O>GG String sHeader; ktyplo#F f{9+,z V(S7mA:T for(int i=1;;i++) _}R$h=YD { x1gS^9MqCB //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); (5$Ge$ //Utility.log(in.readLine()); Z=Y29V8 sHeader=httpConnection.getHeaderFieldKey(i); XCM!8x?K if(sHeader!=null) p(yv { |
Y:`>2ev if(sHeader.equals("Content-Length")) 3bRxV
@0. { =4_}. nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); NpVL;6?7T break; do" m=y } 6P{bUom? } +/B else <'=!f6Wh break; @gP*z6Z } D.Ke } C%4ed# catch(IOException e){e.printStackTrace ();} ,M.C]6YMr catch(Exception e){e.printStackTrace ();} P-X|qVNK1Z Qa2h#0j >DRxF5b{ Utility.log(nFileLength); S*l/
Sa@ k+_>`Gre} ;+75"=[YT return nFileLength; i#:To
|\u } ^;
KCE INndTF ,i_+Z
|Ls //保存下载信息(文件指针位置) )"TVR{I%B private void write_nPos() &N.pW=%,N { MZ38=nJ try{ uzp\V
39 output = new DataOutputStream(new FileOutputStream(tmpFile)); XL*M#Jx output.writeInt(nStartPos.length); SkDr4kds for(int i=0;i<nStartPos.length;i++) (aYu[ML { M~zI;:0O // output.writeLong(nPos); NVzo)C8kb output.writeLong(fileSplitterFetch.nStartPos); nf
pO output.writeLong(fileSplitterFetch.nEndPos); v7(7WfqP } 56C8)? output.close(); %Z6Q/+#fn } Lv+{@) catch(IOException e){e.printStackTrace ();} jwwRejNV catch(Exception e){e.printStackTrace ();} |?KYY0 } fDr$Wcd~ [>NMuwtG &l cfX\y //读取保存的下载信息(文件指针位置) Pz50etJ private void read_nPos() gb,ZN^3<- { -gGw_w?)( try{ >|S@twy DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); FKL4`GEm int nCount = input.readInt(); `:'ciY|%b nStartPos = new long[nCount]; ,OlS>>, nEndPos = new long[nCount]; ;[o:VuTs for(int i=0;i<nStartPos.length;i++) A^}# { j~_iv~[ nStartPos = input.readLong(); =.s0"[% nEndPos = input.readLong(); 0$Tb5+H5 } 8K2 @[TE=5 input.close(); 1*A^v } <IWg]AJT: catch(IOException e){e.printStackTrace ();} qBF|' .$^ catch(Exception e){e.printStackTrace ();} TQb/lY9* } & *tL)qKDc {zZ)JWM<w `Ku:%~$/ private void processErrorCode(int nErrorCode) 1Z 0Qkd( { :PV3J0pB~ System.err.println("Error Code : " + nErrorCode); Wpf~Ji6|| } sm"Rp~[i ~5Fx[q io\t>_ //停止文件下载 7x.j:{2 public void siteStop() 4wv0~T$;x { q-CgXwU bStop = true; "~ =O`5V for(int i=0;i<nStartPos.length;i++) e
6wevK\ fileSplitterFetch.splitterStop(); AxEdQRGk Y*b$^C%2 h>>~B i } !]?kvf-3e } V.8Vy1 $ //负责部分文件的抓取 7
2i&-`&4 **FileSplitterFetch.java HJb^l 4Q */ ^PC;fn,I package NetFox; .|CoueH ,f%4xXI qsEFf(9G import java.io.*; mph9/ %]S import java.net.*; VI|2vV6? 'h;qI& ;>/Mal public class FileSplitterFetch extends Thread { c0l?+:0M `
>>]$ZJ XFWE^*e=B String sURL; //File URL H/*slqL long nStartPos; //File Snippet Start Position 9s!R_R&W. long nEndPos; //File Snippet End Position V:t{mu5j int nThreadID; //Thread's ID `*0VN(gf' boolean bDownOver = false; //Downing is over p< pGqW boolean bStop = false; //Stop identical Y_C6*T% FileAccessI fileAccessI = null; //File Access interface +t-_FbFh3D a;a1>1 YHY*dk*|C public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException yXIJeo" { ,+Ocb-* this.sURL = sURL; ./zzuKO8XK this.nStartPos = nStart; v.sjWF this.nEndPos = nEnd; ~Hd* Xl nThreadID = id; 6uUzky fileAccessI = new FileAccessI(sName,nStartPos);//定位 iZ/iMDfC } UCj<FN ` 3&"uf9d yK"HHdYTV public void run() '
Qlj"U { 3me&isKL while(nStartPos < nEndPos && !bStop) fGA#0/_` { 4\ElMb[] MOytxl:R JSylQ201 try{ *2.h*y'u URL url = new URL(sURL); hpbi!g HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); +~:OUR*> httpConnection.setRequestProperty("User-Agent","NetFox"); wSM(!:on5 String sProperty = "bytes="+nStartPos+"-"; PQ;9iv httpConnection.setRequestProperty("RANGE",sProperty); ']sjW'~ Utility.log(sProperty); (7&b)"y )lz)h*%# ?|Z~mE InputStream input = httpConnection.getInputStream(); ~e)"!r //logResponseHead(httpConnection); {KK/mAp{ ]Nssn\X7 E{^W- byte[] b = new byte[1024]; f;OB"p int nRead; Brd9"M|d while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 9@mvG^ { 48 0M|^
nStartPos += fileAccessI.write(b,0,nRead); 6kAGOjO //if(nThreadID == 1) !I&,!$ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); `}L{gssv } M
'%zA;Wl AOwmPHEL CY*GCkH Utility.log("Thread " + nThreadID + " is over!"); 2AMb-&po&f bDownOver = true; 0r i //nPos = fileAccessI.write (b,0,nRead); _I3v"d } p&4n"hC catch(Exception e){e.printStackTrace ();} .A_R6~:: } -0]%#(E%`h } !g)rp`? ^
uwth MR5[|kHJT //打印回应的头信息 `ueOb public void logResponseHead(HttpURLConnection con) CvEIcm=t { Nz*,m'-1e for(int i=1;;i++) i\DU<lD5VN { N_Zd.VnY String header=con.getHeaderFieldKey(i); lF40n4} if(header!=null) yOAC<<Tzus //responseHeaders.put(header,httpConnection.getHeaderField(header)); oQ*LP{M Utility.log(header+" : "+con.getHeaderField(header)); ""_G4{ else <$a-.C5 break; a<E9@ } B(} 'yY@%u } ,q7FK z{ _ yDDPuAi R9"}-A public void splitterStop() 8Z"f" { :)T*:51{# bStop = true; x%[NK[^& } 7fS NF7/+ TiG?r$6v% nG{o$v_| } D/;[x{;E NpKyrXDJv 02NVdpo[wU /* 4PkKL/E **FileAccess.java UWK|_RT6SA *//文件访问(定位,写) +9pock package NetFox; ^Pu:&:ki import java.io.*;
s_+.xIZ qK2jJ3)> rl$"~/ oz public class FileAccessI implements Serializable{ sX3qrRY G)M! ,
Q //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 1wdc4> RandomAccessFile oSavedFile; piuM#+Y\'S long nPos; | WTWj L%<]gJtrO .}Ys+d1b9c public FileAccessI() throws IOException uqa
pj(" { V8&'dhuG this("",0); aSxDfYN=R } ,=c(P9}^ [u^ fy<jdp TA:uB[Ji public FileAccessI(String sName,long nPos) throws IOException gu~R4@3 { AkdO:hVtG oSavedFile = new RandomAccessFile(sName,"rw"); F7nwVDc* this.nPos = nPos; C]l)Pz$ oSavedFile.seek(nPos); |!7leL } 7 b( 9ZatlI, I|>.&nb public synchronized int write(byte[] b,int nStart,int nLen) h(J$-SUs { RP[`\ int n = -1; -1NR]#P' try{ 2QEH!)lvr oSavedFile.write(b,nStart,nLen); L+T7Ge
q n = nLen; #CAZ}];Qx } 'irwecd8 catch(IOException e) .3XiL=^~Qp { [e@m-/B e.printStackTrace (); 1ah,Zth2 } PApr8Xe + @|u8+ 5L~lF8 return n; m .(\u?J } ?m7i7Dz
K`uPPyv {hN<Ot } M8 \/[R\ &m[}%e%~0 /-m) /* %[9ty`UE **SiteInfoBean.java }NGP! */ h8Oj
E$
H package NetFox; '@w'(}3!3R ) R5j?6}xF V?)V2>] public class SiteInfoBean { kTT%<
e =3SJl1w1 V=5*)i/ private String sSiteURL; //Site's URL L]"$dF private String sFilePath; //Saved File's Path 9n_RkW5g private String sFileName; //Saved File's Name x%goyXK private int nSplitter; //Count of Splited Downloading File YO?o$Hv16 i^Jw`eAmT ,O-_Pv public SiteInfoBean() F1B/cd {//nSplitter的缺省值为5 w'$>E4\ //default value of nSplitter is 5 iQG]v[$ this("","","",5); Z1+Ewq3m } omy3<6 jOGiT|A
hJSWh5] public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) ot!m=s { qTwl\dcncC sSiteURL= sURL; Bz>f sFilePath = sPath; "cly99t sFileName = sName; y!R9)=/M this.nSplitter = nSpiltter; _K'Y`w'] J&JZYuuf "-MB U } O\Z!7UQ$ 9kqR-T|Q OkISRj'!U public String getSSiteURL() -O=xgvh" { v''J@ F7 return sSiteURL; TqV^\C? } H_x}- eX}aa0 T@#?{eA public void setSSiteURL(String value) &sBD0R(a { %_B2/~ sSiteURL = value; gN[t } ZPq.|6& 'o0o.&/= &OXx\}>MW public String getSFilePath() y x#ub-A8 { QOrMz`OA return sFilePath; I!1+#0SG } #;@I. 3K/tB1
JgKhrDx public void setSFilePath(String value) /Lm~GmPt { ]F>#0Rdc sFilePath = value; vZ$E
[EG} } >m<T+{` (0`w.n c9CFGo?)N public String getSFileName() ;E.f% { Ef?|0Gm return sFileName; R-OO1~W= } IqsUtWSp a'Zw^g 41+WIa
L public void setSFileName(String value) Yh@2m9 { Y{#*;p*I sFileName = value; Q{'4,J-w } QUvSeNSp zF{~Md1 o:3(J} public int getNSplitter() :2
:VMIa { JEWc{)4QD return nSplitter; Fo;:GX,b }
-%%Xx5D 3^fwDt} birc&< public void setNSplitter(int nCount) P?n4B \! {
dtfOFag4_ nSplitter = nCount; y0&vsoT } 9rT^rTV } !]D`|HoW RjO0*$>h YX)Rs
Vf /* Wwg<-
9wAJ **Utility.java yqL" YD */ =mPe
wx' package NetFox; 2QAP$f0Ln "$o>_+U
>qr/1mW public class Utility { _`^AgRE Tbv w?3 "p|.[d public Utility() *x]*% { ]$9y7Bhj. Rf>)#hn% 4KR` } ~I;x_0iY4 ;fW~Gb?" //线程睡眠 fsw[R0B public static void sleep(int nSecond) gC iM\Qx { i$6rnS&C try{ X;UEq]kcmn Thread.sleep(nSecond); Z}>F
V~4 } S$$SLy:P catch(Exception e) GQhy4ji'z { ry=8Oq&[~ e.printStackTrace (); ~TS!5Wiv } wuYak"KX } <; ?1#ok & /T} //日志 I%Yq86 public static void log(String sMsg) !uIY , { P!IA;i System.err.println(sMsg); r63l( } Z4As'al U5~aG!E aQ\SV0PI public static void log(int sMsg) m;{HlDez { Tsb}\ System.err.println(sMsg); {6RA~ } 'Rsr*gX# } v^s?=9 7.ein:M|CB N'&>bO?@` /* $|J+ **TestMethod.java wEX<[#a- */ {^N,$,Ab. package NetFox; G/#<d-}_ x"RF[d F
{L# public class TestMethod { p!=8 Pq. <X4f2z{T{@ :{Z%dD public TestMethod() aZ\Z7( { ///xx/weblogic60b2_win.exe 3gVU#T[[ try{ 4~$U#$u_ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); 5WRqeSGh //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); sn^ 3xAF SiteFileFetch fileFetch = new SiteFileFetch(bean); =EA @ fileFetch.start(); &K9RV4M5 } >yT1oD0+x catch(Exception e){e.printStackTrace ();} &1^~G0Rh\ SIR2 Kc0 h>[ qXz } 8$47Y2r@ ;'V[8`Z@ w ~crj$UM public static void main(String[] args) sg}<() { iiJT%Zq`# new TestMethod(); u #}1
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