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/* mIu- **SiteFileFetch.java @R+bR<}] */ ;DWtCtD package NetFox; Yv0;U Kd import java.io.*; qkX}pQkG)h import java.net.*;
DtBIDU] }q0lbwYlb YDEUiZ~ public class SiteFileFetch extends Thread { ejY|o
Bj Efo,5 AEx|<E0 SiteInfoBean siteInfoBean = null; //文件信息Bean Al?LO;$Pa? long[] nStartPos; //开始位置 { bjK(| long[] nEndPos; //结束位置 C:C9swik"5 FileSplitterFetch[] fileSplitterFetch; //子线程对象 @)0-oa,u+ long nFileLength; //文件长度 q7id?F}3& boolean bFirst = true; //是否第一次取文件 I{Pny/d` boolean bStop = false; //停止标志 /rRQ*m_ File tmpFile; //文件下载的临时信息 b}P5*}$:9" DataOutputStream output; //输出到文件的输出流 cp|&&q ![O@{/ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) \VW&z:/*pZ public SiteFileFetch(SiteInfoBean bean) throws IOException .:eNL]2%: { ]V9z)uz siteInfoBean = bean; gemjLuf //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); RfPRCIo tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); I"*;fdm if(tmpFile.exists ()) }@Mx@ S { (`0dO8 bFirst = false; @d5G\1(% read_nPos(); z?~W]PWiZ } i*16kdI. else lLuAZoH { =6#tJgg8 nStartPos = new long[bean.getNSplitter()]; 2Z]<MiAx D nEndPos = new long[bean.getNSplitter()]; !oXA^7Th6] } #UN(R U'iL|JRF
.*H0{ G-FTyIP>' } r30t`o12i r.e,!B s U].u) g$ public void run() j[/'`1tOe { m.~&n!1W*` //获得文件长度 $mA+4ISK //分割文件
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=o
//实例FileSplitterFetch iR-MuDM //启动FileSplitterFetch线程 13s0uyYU<m //等待子线程返回 YM9oVF- try{ Q
!5P if(bFirst) ],r?]> { f[)_=T+ nFileLength = getFileSize(); s)]Z*#ZZ if(nFileLength == -1) M,[u}Rf^w { (]BZ8GOx System.err.println("File Length is not known!"); <@CBc:j0 } UV>^[/^O else if(nFileLength == -2) #&\hgsw/T { tK&.0)*= System.err.println("File is not access!"); )2X ng_, } X-di^%< else ZyqTtA!A { JL1%XQ
i for(int i=0;i<nStartPos.length;i++)
z"BV+ { rVkoj;[ nStartPos = (long)(i*(nFileLength/nStartPos.length)); J.x>*3<l } D5X;hd for(int i=0;i<nEndPos.length-1;i++) 5* 1wQlL { 1r}fnT< nEndPos = nStartPos[i+1]; =+gp~RR, } NF=FbvNe nEndPos[nEndPos.length-1] = nFileLength; /p')
u3 } @]f"X> } l79jd%/m q>&F%;q1] ?r@euZ& //启动子线程 ypXKw7f( fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; )>,b>7 for(int i=0;i<nStartPos.length;i++) 4ei
.- { F2yM2Ldx fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), >Uvtsj# siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ,eRl
Z3T nStartPos,nEndPos,i); Yt*M|0bL Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); RIX0AE fileSplitterFetch.start(); iUh_rX9A" } Ms?V1 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), RVfRGc^lK siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); S[UHx}. // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", {Ny\9r nEndPos = " + nFileLength); &)Z8Qu // fileSplitterFetch[nPos.length-1].start(); 1Qf21oN{
(H9%a-3 ( DwIAO/S //等待子线程结束 q{f%U. //int count = 0; bIizh8d? //是否结束while循环 >
3JU boolean breakWhile = false; @u/<^j3Q uqZLlP# XzQ=8r>l while(!bStop) @.kv",[{[ { 8aGZ% UI write_nPos(); MAR
kTxzi Utility.sleep(500); l1c&a[M) breakWhile = true; ,$3 u*Oz1~ tZ[BfO for(int i=0;i<nStartPos.length;i++) [p@NzS/ { i`r,B`V`08 if(!fileSplitterFetch.bDownOver) ZP?k |sEH { 6f=/vRAh$ breakWhile = false; `.%;|"xR break; ~PvW+UMLk } FStE/2? } ?OKm~ Ek if(breakWhile) *6*#"#D break; cFUYT$8> d^
!3bv*h H'I|tPs //count++; CV4V_G //if(count>4) U^Z[6u // siteStop(); 3HbHl?-UNU } Xkl^!, 4PiN Q'* XoSjYG(>, System.err.println("文件下载结束!"); p"H8;fPA0 } r _xo>y~S catch(Exception e){e.printStackTrace ();} fY=iQ?{/[ } &X+V} E yNI]XEj EhB9M!Y`@ //获得文件长度 QY+#Vp<` public long getFileSize() #2ZXYH} { &t%CuU]/@ int nFileLength = -1; B<1*p,z try{ `1EBnL_1 URL url = new URL(siteInfoBean.getSSiteURL()); 1`O`!plD+ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); CX':nai httpConnection.setRequestProperty("User-Agent","NetFox"); j)-D.bY0 e+y< a~N 4Bx1L+Cg int responseCode=httpConnection.getResponseCode(); Z(K [oUJx if(responseCode>=400) NH'RU`U) { +7 F7Kh processErrorCode(responseCode); H.idL6*G return -2; //-2 represent access is error P+}qaup } q'(WIv@ (dMFYL>YP -(cm String sHeader; #]lUJ
&M}e &K>]!yn Wlg(z% for(int i=1;;i++) 1A E/ILGo { 7v,>sX //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); F5
LQgK-z //Utility.log(in.readLine()); iqy}|xAU sHeader=httpConnection.getHeaderFieldKey(i); +crAkb}i if(sHeader!=null) `zzX2R Je { K+v 250J$- if(sHeader.equals("Content-Length")) x(]s#D!) { ~;eWQwD nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); iLmU|jdE break; ,Qyz2-
w } Km,tfM5j } izFu&syv) else T@yH.4D break; tB_ V%qH } :m&`bq } ~7 `x9MUc catch(IOException e){e.printStackTrace ();} m6;Xo}^w catch(Exception e){e.printStackTrace ();} ~|uCZ.;o cJA:vHyw #
Jdip) Utility.log(nFileLength); 5?O/Aub .qK=lHxT ?>%u[g return nFileLength; k5/nAaiVE } %+I(S`} k2t?e:)3zr w:Lu //保存下载信息(文件指针位置) Ep?a>\ private void write_nPos() "~V}MPt { B4|`Z'U#; try{ HO@T2t[ output = new DataOutputStream(new FileOutputStream(tmpFile)); V)@MM2, output.writeInt(nStartPos.length); QK? 5)[ J for(int i=0;i<nStartPos.length;i++) B8_l+dXO { ;~1r{kXxA" // output.writeLong(nPos); WHN b.> output.writeLong(fileSplitterFetch.nStartPos); .vW~(ZuD output.writeLong(fileSplitterFetch.nEndPos); 4|2$b:t } VBH[aIW output.close(); `% ENGB| } O"#`i{^?2 catch(IOException e){e.printStackTrace ();} %<M<'jxSca catch(Exception e){e.printStackTrace ();} u^]yz&9V } p +T&9 D~?kvyJ %I.{umU //读取保存的下载信息(文件指针位置) -:~`g*3# private void read_nPos() `PW=_f={ { he+[ try{
9Np0<e3p DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); |wLQ)y* int nCount = input.readInt(); ##s!-.T nStartPos = new long[nCount]; 6sZRR{' nEndPos = new long[nCount]; xc/|#TC8? for(int i=0;i<nStartPos.length;i++) <GNOT"z { l?R_wu,Q nStartPos = input.readLong(); 0l:5hD,)F nEndPos = input.readLong(); eXOFA d]>u } (C3d<a\: input.close(); (Dl"s`UH~ } bv+e'$U3 catch(IOException e){e.printStackTrace ();} *
QR7t:([ catch(Exception e){e.printStackTrace ();} ^LNc } >|'6J!Op XBY"7} h7y*2:l6 private void processErrorCode(int nErrorCode) YSwD#jO0 { =#^dG''*" System.err.println("Error Code : " + nErrorCode); 0sUc6_>e } 0iL8i#y* FRg6-G/S )F$Stg3e //停止文件下载 41zeN++ public void siteStop() .lFSFJ ?? { 7 %|>7 bStop = true; s{,e^T for(int i=0;i<nStartPos.length;i++) /,>.${,;u fileSplitterFetch.splitterStop(); X<QE]RZ z<fEJN 2"MI8EK } 8;'n.SC{ } eLTNnz //负责部分文件的抓取 {+[gf:Ev **FileSplitterFetch.java qN QsU */ {Psj#.qP1 package NetFox; \'EWur" !K 9(OX2; EK#m?O:> import java.io.*; kC
k- import java.net.*; Y{yr-E #~M 2G-?
P"4l@ }M7kApb>Y public class FileSplitterFetch extends Thread { Sy'>JHx dJ!o/y6 -Fdi,\e String sURL; //File URL 3?XLHMxW long nStartPos; //File Snippet Start Position e||_j long nEndPos; //File Snippet End Position %OtW\T=u int nThreadID; //Thread's ID ]03ZrZ!
PM boolean bDownOver = false; //Downing is over cR&xl^BJ boolean bStop = false; //Stop identical KwHOV$lD; FileAccessI fileAccessI = null; //File Access interface $G_<YVXcG :acQK=fe d0=nAZZ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException a82mC r { q"Md)?5N this.sURL = sURL; #Kl2K4 this.nStartPos = nStart; +o3g]0 this.nEndPos = nEnd; 8bGq"!w- nThreadID = id; 8<kme"%s fileAccessI = new FileAccessI(sName,nStartPos);//定位 #~+#72+x7 } asi1c
y\ X]fw9tZ V~_nyjrJM public void run() PsgzDhRv { m?j!0> while(nStartPos < nEndPos && !bStop) 9C$!tz>>+i { j VZi_de )|{{}w~` .+Ej%|l% try{ -^b^ 6=# URL url = new URL(sURL); E5(Y*m! HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); %p9bl ,x httpConnection.setRequestProperty("User-Agent","NetFox"); c6HU'%v String sProperty = "bytes="+nStartPos+"-"; zK 2wLX httpConnection.setRequestProperty("RANGE",sProperty); UW*aSZ/? Utility.log(sProperty); O0~d6Ba 3ngLEWT sb
@hGS InputStream input = httpConnection.getInputStream(); lnDDFsA //logResponseHead(httpConnection); s=TjM?) -T?IkL) PNKT \yd byte[] b = new byte[1024]; xu=B int nRead; _@N)]!\MgP while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) dM UDLr- { ?iX=2- nStartPos += fileAccessI.write(b,0,nRead); /;rN/ot2o //if(nThreadID == 1) \V>%yl{8 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 2eU[*x } AD\<}/3U L:M9|/ .A\ \v6@ Utility.log("Thread " + nThreadID + " is over!"); xp&!Cl>C3\ bDownOver = true; S=}~I //nPos = fileAccessI.write (b,0,nRead); 9oP{Al } *d@Hnu"q catch(Exception e){e.printStackTrace ();} x+cF1N2. } H/k W
:k } n@;x!c< + $3'+V_CZ3 L"iyjL<M //打印回应的头信息 ~
ZL`E public void logResponseHead(HttpURLConnection con) Fnpn_O XlH { t^,Qy.L0 for(int i=1;;i++) 358/t/4{p { Pm^N0L9?q String header=con.getHeaderFieldKey(i); @;fE%N if(header!=null) ~5NGDT#L* //responseHeaders.put(header,httpConnection.getHeaderField(header)); ;a&:r7]= Utility.log(header+" : "+con.getHeaderField(header)); oKi1=d+T else el?V2v[ break; }+4Bf+u: } &a_kJ)J } qb4;l\SfT Jyci}CU3\Q 7V{"!V5 public void splitterStop() 66<\i ltUQ { LU,"i^T bStop = true; -FN6sNvIh } [
5W#1 & 9r nk\`E em[F| } "O[76}I+.q ^<\} Y !t
Oky /* g&3#22z **FileAccess.java uq4sbkP *//文件访问(定位,写) SrtVoe[ package NetFox; qW~R-g] import java.io.*; cIvYfgIo9 e=l5j"gq B21AcE public class FileAccessI implements Serializable{ ;3|Lw<D5; SP*JleQN //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 'ZH<g8:=@ RandomAccessFile oSavedFile; iM|"H.. long nPos; =)- Q?1q $O e 58 %s2"W~ public FileAccessI() throws IOException As~p1%nok { P5}[*k%DQw this("",0); <
}wAP_y } n
[Xzo} Qf-k&d zI&4k..4 public FileAccessI(String sName,long nPos) throws IOException zQ5jx5B": { O;0<^M/0G oSavedFile = new RandomAccessFile(sName,"rw"); H='9zqYZ<W this.nPos = nPos; GHJ=-9{YL oSavedFile.seek(nPos); GoSWH2N } L%K_.!d^ bepYeT
3{4/7DcX public synchronized int write(byte[] b,int nStart,int nLen) Sq|1f?_gU { =x0"6gTz> int n = -1; !@Sf>DM" try{ r\n
h.}s oSavedFile.write(b,nStart,nLen); BgWz<k}5M n = nLen; e#6&uFce } 5uV"g5?w catch(IOException e) vvsNWA { 6G<Hi"I e.printStackTrace (); Cre0e$ a } mU+FQX oiv2rOFu 8<-oJs_o+ return n; ;2Ad]) } ju^"vw 5Vqmv<F;$Z *[xNp[4EU } ;WS7. QR5,_wJ& (: TGe v /* UiK+c30FU **SiteInfoBean.java *lerPY3 q */ ^[seK)S= package NetFox; 2Ph7qEBQ22 a4jnu:e KBr5bcm4u public class SiteInfoBean { Wt+y-ES cUZ!;* loC5o|Wh private String sSiteURL; //Site's URL 7c29Ua~[ private String sFilePath; //Saved File's Path E7yf[/it private String sFileName; //Saved File's Name N^Hn9n private int nSplitter; //Count of Splited Downloading File B)*#g }&(E#*>x h#@4@x{ public SiteInfoBean() \Qi#'c$5+a {//nSplitter的缺省值为5 [t //default value of nSplitter is 5 |.8d,!5w} this("","","",5); kg?T$}O } 11B{gUv.] Y-%l7GErhL pKxX{i1l public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) y/@;c)1b9 { sw$R2K{y sSiteURL= sURL; !k:zLjtp sFilePath = sPath; @vdc)vN[/ sFileName = sName; UL)" this.nSplitter = nSpiltter; :^H9W^2 V<HOSB7 tIxhSI^ } ~"JE![XR Uin k ?v"K1C1. public String getSSiteURL() +(z_"[l" { [>$\s=` h return sSiteURL; . QQ?w } zL)1^[%O9 lTV@b& o5=)~D{/G3 public void setSSiteURL(String value) NoJnchiU { &h7smZO5j sSiteURL = value; _@#uIOcE } _OJ0 < {E '<?v:pb9 ]^*_F public String getSFilePath() QH7V_#6bKP { Jb3>vCIn return sFilePath;
ko=aa5c } vz;7} Zj] A*\o
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M public void setSFilePath(String value) 79{.O`v { MPKpS3VS sFilePath = value; ~j/bCMEf! } 1N!Oslum 4; BW @4/~~ public String getSFileName() zj~nnfoys { io9y;S"+ return sFileName; VM-qVd- } _=|nOj39 _l24Ba$F6 }g>dn public void setSFileName(String value) HF&h { KjFZ sFileName = value; ig{A[7qN } iUeV5cB qs6Nb'JvQR 935-{h@k public int getNSplitter() MB]#%g& { ~/j$TT" return nSplitter; 4ss&'h } &Pu+(~'Q b$dJ?%W 5nM kd/ public void setNSplitter(int nCount) h^o+E2<] { l5FuMk- nSplitter = nCount; K-2.E } BW'L.*2 } wXr>p)mP aL8p"iSG9 zyaW3th /* c=b+g+*xd **Utility.java "bD+/\ z */ 'ox0o: package NetFox; RDUT3H6~
OD vC{h2A public class Utility { \ V[;t- t2=a(N-/, p//T7rs public Utility() a$ C2} { Ho|o,XvLv hMNJ'i} Wyy^gJl } wVx,JL5Jr =LlLE<X"%x //线程睡眠 Sp 7u_Pq{ public static void sleep(int nSecond) c:=7lI { `%$8cZ-kr try{ _REqT Thread.sleep(nSecond); `+roQX.p } C1h#x'k catch(Exception e) y\^@p=e { O {PW e.printStackTrace (); nAIH`L"X } @)o0GHNP } rpUy$qrRc mbF(tSy //日志 rei
8LW public static void log(String sMsg) dX_!0E[c { Wt>J` System.err.println(sMsg); x|.v{tQa } mfZ)^X ]kRI}Om2 j*tk(o}qG public static void log(int sMsg) bsB},pc { fZ[kh{| System.err.println(sMsg); p`d
XqW } 2Oyy`k
} @'*eC}\E 'z)hG#{I LyGUvi /* 8QT<M]N% **TestMethod.java E [S?
b=^ */ gXLCRn!iR package NetFox; 3I|O^ \,2gTi,= w "{bp public class TestMethod { X` ATH^S uaiz*Im <x0)7xX public TestMethod() tE[H8 { ///xx/weblogic60b2_win.exe 4avc=Y5 try{ :-)GNf yGz SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); uM<|@`&b //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); jk )Vb SiteFileFetch fileFetch = new SiteFileFetch(bean); 3S5^`Ag# fileFetch.start(); ZI,j?i6\ } y`4{!CEyLW catch(Exception e){e.printStackTrace ();} Z(p*Z,?u 0mTEim jO=*:{#x } wtSvJI~o) Dv@PAnk3C 69Nw/$ public static void main(String[] args) 80|onP\L { <|a=hHPi: new TestMethod(); \^9pW 2v } EJ`Q8uz } s
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