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/* -!;2?6R9{ **SiteFileFetch.java }py)EI,U */ [As9&]Bv5 package NetFox; F-AU'o
* import java.io.*; Em)U`"j/9 import java.net.*; S&/,+x'c| pHQrjEF* +7\$wc_1I@ public class SiteFileFetch extends Thread { \ vn!SO7 \]C_ul' "uCO?hv0 SiteInfoBean siteInfoBean = null; //文件信息Bean -Vg(aD long[] nStartPos; //开始位置 b S-o86u long[] nEndPos; //结束位置 bGw56s'R5~ FileSplitterFetch[] fileSplitterFetch; //子线程对象 ` _aX>fw long nFileLength; //文件长度
_U.|$pU boolean bFirst = true; //是否第一次取文件 G0#<SJ,) boolean bStop = false; //停止标志 SU,G0. File tmpFile; //文件下载的临时信息 (P!r^87 DataOutputStream output; //输出到文件的输出流 JfD-CoQS' fg$#ZCi //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) fi%)520 public SiteFileFetch(SiteInfoBean bean) throws IOException @$}Ct { 4>^LEp siteInfoBean = bean; eHHY.^| //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); (#kKL??W tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Hjhgu= if(tmpFile.exists ()) &~mJ
).* { y0vJ@ %` bFirst = false; H9;0$Y(e- read_nPos(); 0N;~(Vt2 } Z(j"\d!y else )
>;7"v {
I~T nStartPos = new long[bean.getNSplitter()]; IiU\}<O nEndPos = new long[bean.getNSplitter()]; EfX\" y } lfvt9!SJ+/ :HW| mqKd \SSHj ONX +*RaX (&
} mR|L'[l >$$z 6A[ CbGfVdw/c public void run() ai%*s&0/Y { . ;rE4B //获得文件长度 P ~ :
N //分割文件 d1P|v(
`S9 //实例FileSplitterFetch Qb%o%z?hee //启动FileSplitterFetch线程 "I3
#/~q //等待子线程返回 8Y4mTW try{ IR2=dQS if(bFirst) dx@|M{jz' { Mj&G5R~_ nFileLength = getFileSize(); LBxmozT if(nFileLength == -1) Vv54;Js9 { @An} System.err.println("File Length is not known!"); 0=0,ix7?# } \sMe2OL#z else if(nFileLength == -2) l1bkhA b
{ Y~xo=v( System.err.println("File is not access!"); \sBXS. } X [<%T}s# else ho-#Xbq#g { /KLkrW for(int i=0;i<nStartPos.length;i++) z$gtGrU { kmUL^vF nStartPos = (long)(i*(nFileLength/nStartPos.length)); 3CzF@t;5 } 8`<e\g7- for(int i=0;i<nEndPos.length-1;i++) >.M>,m\ { X=+|(A,BdY nEndPos = nStartPos[i+1]; w73?E#8 } nU4to nEndPos[nEndPos.length-1] = nFileLength; IM% ,A5u } 5U-SIG* } 6r|=^3{ W#)X@TlE 8.,d`~ //启动子线程 P_4E<"eK fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ,,SV@y; for(int i=0;i<nStartPos.length;i++) hK,a8%KnFA { 5cGQ `l fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 6hMKAk siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), #f [}a nStartPos,nEndPos,i); #c!rx%8I Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Lqdapx"Z_ fileSplitterFetch.start(); }DQTy.d;P } a^={X<K|/ // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), fy]c=:EmD siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); UX+vU@Co[ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", T|8:_4/l nEndPos = " + nFileLength); @@j:z;^| // fileSplitterFetch[nPos.length-1].start(); "OwK- ]5K+W [^Bjmw[7 //等待子线程结束 ?&'Kw>s@ //int count = 0; Q 0G5<:wc //是否结束while循环 gu6%$z boolean breakWhile = false; p}3` "L= 9: .m]QN ,z<1:st]< while(!bStop) N]eBmv$| { 55' write_nPos(); Y)@Y$_ Utility.sleep(500); EK=
y!> breakWhile = true; iciKjXJ: NRny]! xP_/5N=f for(int i=0;i<nStartPos.length;i++) "u]&~$ { GeDI\- if(!fileSplitterFetch.bDownOver) ,]:Gn5~ { ~`Rar2%B breakWhile = false; ?JG^GD7D break; k 3H0$1 } DF_wMv:>^ } =&6sU{j* if(breakWhile) .%y'q!? break; ; >>n#8` 41R6V>e@9J ?"*JV1 9 //count++; HCsd$M;Hbv //if(count>4) 5x%Blkx // siteStop(); d#TA20` } K-~g IlbQ` JO*/UC>" 7nNNc[d*= System.err.println("文件下载结束!"); CIz0Gjtx6m } e
pp04~ catch(Exception e){e.printStackTrace ();} 7*j!ZUzp } F)KR8( 9Vqy<7i1 >s 6ye //获得文件长度 ^D5Jqh)
public long getFileSize() V*ao@;sD { 76"4Q! int nFileLength = -1; DI8<0.L try{ `3i<jZMG URL url = new URL(siteInfoBean.getSSiteURL()); PxgJ7d HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); a_+?#m httpConnection.setRequestProperty("User-Agent","NetFox"); `vMhrn y+T[="W ~uH_y- int responseCode=httpConnection.getResponseCode(); 04jvrde8-O if(responseCode>=400) Cdib{y<ji { L-}J=n\ processErrorCode(responseCode); (M"rpG>L return -2; //-2 represent access is error ~5`oNa } 5?F5xiW ^P^%Q)QXl e*qGrg (E String sHeader; E(j#R" P
woiX#vz t))MZw&@ for(int i=1;;i++) ;:j1FOj { =qc+sMo //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); hrtz>qN //Utility.log(in.readLine()); w8>h6x" sHeader=httpConnection.getHeaderFieldKey(i); OtoM if(sHeader!=null) aUzCKX%>C { bq9w@O if(sHeader.equals("Content-Length")) u1L^INo/ { }rI:pp^KS nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); "5Y6.$Cuf! break; ?!&%-R6* } Vn4wk>b}$2 } :u./"[G else 7dcR@v`c break; *s*Y uY%y } \?>M?6D } IC&P-X_aP catch(IOException e){e.printStackTrace ();} 'Zp{ catch(Exception e){e.printStackTrace ();} i? ~-% Nwz?*~1 /$CTz xd1 Utility.log(nFileLength); RzjUrt l>}f{az-T \$ipnQv return nFileLength; t$z[ja= } Nw'03Jzx_ O`c50yY ]vlBYAW' //保存下载信息(文件指针位置) R`cP%7K private void write_nPos() X0u,QSt'O { q50F!yHC- try{ /3,Lp-kp output = new DataOutputStream(new FileOutputStream(tmpFile)); >PSO]%mE output.writeInt(nStartPos.length); q:/df]Ntt for(int i=0;i<nStartPos.length;i++) 3y6\0|{1 { 8rH6L:]S // output.writeLong(nPos); X)[tb]U/Wx output.writeLong(fileSplitterFetch.nStartPos); }a||@unr output.writeLong(fileSplitterFetch.nEndPos); -p&u= } d(o=)!p output.close(); A}SGw.3 } PQkw)D<n]_ catch(IOException e){e.printStackTrace ();} ve
ysW(z catch(Exception e){e.printStackTrace ();} Zt!A!Afu } Os@b8V 8,A Ha `N nf/?7~3?[ //读取保存的下载信息(文件指针位置) b/'c
h private void read_nPos() ZrTB% { X+aQ 7^"s try{ = 'NV3by DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); C~B ]@xxK) int nCount = input.readInt(); ^;RK-) nStartPos = new long[nCount]; [|OII!" nEndPos = new long[nCount]; P[WkW# for(int i=0;i<nStartPos.length;i++) Gv&G2^ { +QU>D:l nStartPos = input.readLong(); Sp80xV_B nEndPos = input.readLong(); 3&+dyhL'w } Z5>~l input.close(); D#b*M)X" } 8x U*j catch(IOException e){e.printStackTrace ();} -!Myw&*\V catch(Exception e){e.printStackTrace ();} A/>Q5) } a)JXxst =Z Nnl3r@ private void processErrorCode(int nErrorCode) YpDJ(61+ { z6iKIw
$ System.err.println("Error Code : " + nErrorCode); 25)9R^ } TC?B_;a cjEqN8 $V(]z`b& //停止文件下载 TU0-L35P1 public void siteStop() D=-}&w_T" { v.Ba bStop = true; Q?k*3A for(int i=0;i<nStartPos.length;i++) {R!yw`#^B fileSplitterFetch.splitterStop(); ZwS:Te9- ma~#E$i& \b"rf697, } 'RMUjJ-! } b&U1^{( //负责部分文件的抓取 '`P%;/z **FileSplitterFetch.java Y[6T7eZ0g */ J,yKO(}<C package NetFox; (`.OS)& (' 5?- bQt:=> import java.io.*; R+M =)Z import java.net.*; g#J aw|N 35& ^spb h=7q;-@7 public class FileSplitterFetch extends Thread { b_31 \ vFVUdxPOw zFq%[ X String sURL; //File URL !4vb{AH long nStartPos; //File Snippet Start Position VGV-t long nEndPos; //File Snippet End Position N'v3
|g int nThreadID; //Thread's ID UphTMyn3 boolean bDownOver = false; //Downing is over y|5s boolean bStop = false; //Stop identical r)iEtT!p* FileAccessI fileAccessI = null; //File Access interface ~T1W-ig4[* +.V+@! -F ~DOG% public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException d.wGO]" { Tc6cBe, this.sURL = sURL; @V%\Gspv this.nStartPos = nStart; V)^Xz8H_ this.nEndPos = nEnd; :\OSHs<M nThreadID = id; q-JTGCFl fileAccessI = new FileAccessI(sName,nStartPos);//定位 #d-({blo< } 1>J.kQR^ H#TkIFo] +`
Md5.w public void run() ?F"o+]i+^ { : ,l7e while(nStartPos < nEndPos && !bStop) a: "1LnvR { SyvoN,;Q i HD!v7d7 2LwJ%! try{ "I.6/9 URL url = new URL(sURL); h6h6B.\Ld HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); cE]z Tu?! httpConnection.setRequestProperty("User-Agent","NetFox"); =}`d String sProperty = "bytes="+nStartPos+"-"; D\Ak-$kJ^ httpConnection.setRequestProperty("RANGE",sProperty); GcVQz[E Utility.log(sProperty); ]8p{A#1 <Ua~+U(FR0 w]wZJ/U` InputStream input = httpConnection.getInputStream(); |
&X<- //logResponseHead(httpConnection); 3V k8' _?c.m*)A axC|,8~tq byte[] b = new byte[1024]; Z=JKBoAY int nRead; 1sqE/-v1_^ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 5)#j }`6 { yfG;OnkZ nStartPos += fileAccessI.write(b,0,nRead); 46:<[0Psl/ //if(nThreadID == 1) o:d7IL // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); a"vzC$Hxd } Lw>B:3e [6!k:-t+ $Rm~ VwY# Utility.log("Thread " + nThreadID + " is over!"); Fw<"]*iu bDownOver = true; @Q74 //nPos = fileAccessI.write (b,0,nRead); *S;}&VAZ } 7V"?o catch(Exception e){e.printStackTrace ();} b"I#\;Ym } 2 2v"?* } cgb>Naa< h.\I
tK{) Tv ``\< //打印回应的头信息 l9.`2d]o public void logResponseHead(HttpURLConnection con) *qpu!z2m|| { u[GZ~L for(int i=1;;i++) WcN4ff- { :aNjh String header=con.getHeaderFieldKey(i); -"[4E0g0 if(header!=null) (p{X.X+ //responseHeaders.put(header,httpConnection.getHeaderField(header)); )d3
09O Utility.log(header+" : "+con.getHeaderField(header)); ,?GwA@~$k: else j
3<Ci {3 break; ]es|%j 2 } dSGdK
$ XA } ]\39# #/G!nN # ~fXNj-'RW public void splitterStop() vpu#!(N { Ik:G5m<ta bStop = true; aq?bI:>8 } u+)!C*ho ?@"@9na =Vg~ VD } yq~ ?{J1&;j* L=<xTbY /* Thggas, **FileAccess.java 7U [C=NL *//文件访问(定位,写) JU8}TX package NetFox; Za@\=}Tt import java.io.*; f.g!~wGD Pp?P9s{ g#I`P& public class FileAccessI implements Serializable{ ioi/`iQR wkt4vE87 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节
qCI&H7u@ RandomAccessFile oSavedFile; x^y$ pr long nPos; khX/xL uz3cho' Y9abRrK public FileAccessI() throws IOException +R~]5Rxd { }u^bTR?3 this("",0); #]Vw$X_S } (
fFrX_K] IjhRSrCv uI,*&bP public FileAccessI(String sName,long nPos) throws IOException ZcA"HD% { :V9Q<B^ oSavedFile = new RandomAccessFile(sName,"rw"); amsl>wc! this.nPos = nPos; S]H[&o1o oSavedFile.seek(nPos); 48p3m)5
} KDN#CU L4iWR/& whI4@# public synchronized int write(byte[] b,int nStart,int nLen) R&uPoY,f { I(6%'s2 int n = -1; cC8$ oCR? try{ ihkZs3} oSavedFile.write(b,nStart,nLen); Gb^63.} n = nLen; i3 js'?7E } h),;j`PrC catch(IOException e) IsE&k2 SD { {tVA(&\< e.printStackTrace (); jnV#Q
; } Gr({30"8 q~qz^E\T sD3Ts;k return n; }%KQrlbHJl } "|6(.S+o S%RxYJ( b8a(.}8* } 6Emn@Mn= S(=@2A+; c:${qY:! /* rT="ciQ **SiteInfoBean.java ,IiKe_B */ B~o3Z package NetFox; -IIrrY
O Qz`evvH q`AsnAzo& public class SiteInfoBean { -t_&H\_T yc0
1\o d^'_H>x private String sSiteURL; //Site's URL ygTfQtN private String sFilePath; //Saved File's Path Z@q1&}D! private String sFileName; //Saved File's Name )+FnwW private int nSplitter; //Count of Splited Downloading File <_/etw86Z /: !sn-( 5+GTK)D public SiteInfoBean() @!$xSH {//nSplitter的缺省值为5 ,$]m1|t@z //default value of nSplitter is 5 +^:uPW^U this("","","",5); ufR|V-BWx } IlEU6Rs
[<+T@"y YWPkVvI public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) KMT$/I{p, { uJ"#j
X sSiteURL= sURL; UHJro9 sFilePath = sPath; ZV Ko$q:F sFileName = sName; ycN!N this.nSplitter = nSpiltter; PR;Bxy ''2:ZX X 1sUgjyGQ } zRh)q,Dt $zz4A~
`DSDu Jw% public String getSSiteURL() .==c~>N { QP%AJ[3ea% return sSiteURL; .9DhD=8aIO }
,-])[u OfLj 4H6Q u}'m7|)8 public void setSSiteURL(String value) d3oRan}z { )m-(- I sSiteURL = value; Z){fie4WM } 9'X "a g9GPyU =j_4!^ public String getSFilePath() !rx5i { nJH'^rO!C return sFilePath; ;&b=>kPlZ } 6/a%%1c1 KYhL}C+ o &b\bK%E public void setSFilePath(String value) '<"%>-^Gn {
i[/1AI sFilePath = value; |}l/6WHB } SOD3MsAK 1\TkI=N3 B
\V;{: public String getSFileName() c3fd6Je5 { x}C$/ 7^ return sFileName; {s@&3i?ZiC } LWo )x JpQV7}$ lfoPFJ
Z public void setSFileName(String value) 8yr-X!eF { PtjAu sFileName = value; @
/e{-Q } 7vqE@;:dt yrzyus Dmtsu2o public int getNSplitter() %)}_OXWf: { ZA4sEVHW return nSplitter; ^]LWcJ?"^! } S{cK~sZj 'pAq;2AA Ud-c+, xX public void setNSplitter(int nCount) B)DtJf { wh]v{Fi' nSplitter = nCount; <.|]%7 } voN, u>U } NS4W!o;" T.!.3B$@] : 2L-Nf /* 7r3EMX\#Qm **Utility.java P\X$fD */ %F*h}i package NetFox; >+BLD Kn+B):OY+ Xp^71A?> public class Utility { btf]~YN bmC{d l%cE o`U public Utility() yV@~B;eW0 { xqVIw!J?/} U,9=&"e b Jpe\ } Nrp1`qY P= 26! b //线程睡眠 v~O2y>8Z public static void sleep(int nSecond) oFJx8XU { %tz foiJ%P try{ orF8% Thread.sleep(nSecond); kEdAt5/U{ } 62OZj%CXN catch(Exception e) &ZPyZj { |A
u+^#:; e.printStackTrace (); j|WN!!7 } 'k$j^|r> } -[lOf DTV"~>@ //日志 $Jy1=/W& public static void log(String sMsg) E7Pz~6 { ]\%u9,b%! System.err.println(sMsg); BG20R=p } JLxAk14lc gM#]o QOGE wtro'r3 public static void log(int sMsg) 4q^'MZm1 { DmpD`^?-L System.err.println(sMsg); yFqB2(Dv } GA)t!Xg^ } ,
rc
%#eF "M:0lUy jTz~
V&^ /* %wux#"8
**TestMethod.java &p^8zE s */ 20RI S j package NetFox; RC]-9gd3Q
Hn,;G`{ ^&8xfI6? public class TestMethod { w`K=J!5y2g [Gb8o' [,ns/*f3R public TestMethod() w>gB&59r { ///xx/weblogic60b2_win.exe ~@Eu4ip)F try{ Hk|wO:7Be SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); g~$cnU //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); |`6*~ciUV SiteFileFetch fileFetch = new SiteFileFetch(bean); H(j983 fileFetch.start(); b\Gw|?Rv } DlbNW& V catch(Exception e){e.printStackTrace ();} w57D qG> L(qQ,1VY r5aOQ } *U^7MU0 Wi{ jC?2Q EJ`"npU
public static void main(String[] args) n[`FoY { /q >1X!Z new TestMethod(); UgZuEfEGve } N(^
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