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/* D n^RZLRhy **SiteFileFetch.java rd6?;K0 */ KQh'5o& package NetFox; Q'Q^K import java.io.*; {Q0"uE)-. import java.net.*; dPS}\&1 y37@4p^@9 W,vb7v' public class SiteFileFetch extends Thread { r'j*f"uAm /D
eU`rj IP-mo!Y. SiteInfoBean siteInfoBean = null; //文件信息Bean i;cqK&P;] long[] nStartPos; //开始位置 :Q89j4, long[] nEndPos; //结束位置 v6FYlKU@8 FileSplitterFetch[] fileSplitterFetch; //子线程对象 H}d&>!\}F long nFileLength; //文件长度 nI-\HAX boolean bFirst = true; //是否第一次取文件 V`G]4} boolean bStop = false; //停止标志 D(y=0), File tmpFile; //文件下载的临时信息 [/I4Pe1Yj% DataOutputStream output; //输出到文件的输出流 arnu|paw n@xU5Q //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 0@z78h=h public SiteFileFetch(SiteInfoBean bean) throws IOException {epsiHK@tK { 3*ZE`` siteInfoBean = bean; n-uoY<;hp //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); -*3wNGh{ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); \'shnzs if(tmpFile.exists ()) wzF"^CJ { Nt/>RCh bFirst = false; =OCHV+m read_nPos(); /P320[B}m& } 4e* rBTl else ~qRP.bV%f { #=h~Lr'UH nStartPos = new long[bean.getNSplitter()]; Q\}5q3 nEndPos = new long[bean.getNSplitter()]; hW]:CIqk } 7 'N&jI A+AqlM+$i 94Are< U:p<pTnMR } TRa|}JaI" B#8!8 qWdL|8 public void run() [W`
_` { \qKh9 //获得文件长度 /K1YDq<= //分割文件 v. !L:1@I. //实例FileSplitterFetch H_Vf_p? //启动FileSplitterFetch线程 v#F.FK //等待子线程返回 XK>B mq/] try{ {qK>A?9 if(bFirst) N|wI=To { %kUIIHV} nFileLength = getFileSize(); }k$2r3 if(nFileLength == -1) =*fOej>G { (wkeo{lx System.err.println("File Length is not known!"); K^>+" } ki39$A'8 else if(nFileLength == -2) "??$yMW { 46sV\In>? System.err.println("File is not access!"); rF'q\tJDz } 3nMXfh/ else n1X 7T0' { 2+50ezsId for(int i=0;i<nStartPos.length;i++) !A qSG- { R]H/Jv\' nStartPos = (long)(i*(nFileLength/nStartPos.length)); }9=VhC%J } Bg{"{poy for(int i=0;i<nEndPos.length-1;i++) *Mk5*_
{ NvY%sx, nEndPos = nStartPos[i+1]; MqRpG5 . } KFx4"f% nEndPos[nEndPos.length-1] = nFileLength; "{Lp'+wNw } Eu2@%2}P } qf#Ou pKMy:j f!AcBfaLr //启动子线程 =c:K(N qL fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 1$H*E~ for(int i=0;i<nStartPos.length;i++) Z$"E|nRN { qX>mOW^gT8 fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ')zdI]@M siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), d?)k<!fJk nStartPos,nEndPos,i); 8tJB/Pw`S Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 0CX2dk"UB^ fileSplitterFetch.start(); K 0R<a~ } ?hHVawt // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), {oOzXc6o siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); hV_bm@f/y // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", %|Sh|\6A! nEndPos = " + nFileLength); lcO;3CrJ! // fileSplitterFetch[nPos.length-1].start(); k <SFl 8cI<~|4_ A%(t' z //等待子线程结束 &?59{B.mD //int count = 0; :(ni/,~Q //是否结束while循环 TL'^@Y7X5 boolean breakWhile = false; g$+ $@~ j6}/pe*;;T [TRHcz n while(!bStop) |L wn<y { ?>
)(;Ir9 write_nPos(); u)J&3Ah% Utility.sleep(500); GI']&{ breakWhile = true; v"-@'qN' d|I?%LX0p I54`}Npp for(int i=0;i<nStartPos.length;i++) iW oe { |T3F:],` if(!fileSplitterFetch.bDownOver) m%7T ~ { I8M^]+c breakWhile = false; 7
G37V"'' break; 20h+^R3{Z } II; } <l>o6K if(breakWhile) ?9W2wqN>o break; J7a_a>Y rW),xfo0 LlbRr.wL //count++; 4}&$s //if(count>4) D6z*J?3^#& // siteStop(); $1KvL8 } cug=k ey!QAEg"X1 M4rI]^lJ System.err.println("文件下载结束!"); 5=@q!8a* } K%i9S;~
catch(Exception e){e.printStackTrace ();} `YL)[t? V } !I)wI~XF)5 #ATV#/hW wB%N}bi! //获得文件长度 d x52[W public long getFileSize() +t[i68,% { <gfkbDP2 int nFileLength = -1; Lfr>y_i;F try{ i?^lEqy[ URL url = new URL(siteInfoBean.getSSiteURL()); ?OD43y1rzd HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ]&+,`1_q httpConnection.setRequestProperty("User-Agent","NetFox"); iC(&U YL ;cpQ[+$nKp _98
%?0 int responseCode=httpConnection.getResponseCode(); +T!7jC(O
Q if(responseCode>=400) pA?kv]l( { Yl\p*j"Fid processErrorCode(responseCode); .0=VQU return -2; //-2 represent access is error mssCnr; } 4C]>{osv V;@kWE>3 qE:/~Q0 String sHeader; 8r{:di* "fH"U1Bw VUd=|$'J for(int i=1;;i++) 9=o;I;I { ?hfyQhR //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); F4:giu ht //Utility.log(in.readLine()); ^s.necg0 sHeader=httpConnection.getHeaderFieldKey(i); vXI2u;=y if(sHeader!=null) {)KH% { "Qci+Qq if(sHeader.equals("Content-Length")) FV~ENpncP { x%]5Q/|Ur nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 3OZu v};k break; _ -6IB> } 5yl[#>qt } I_"KhBM else "~+?xke5z break; )Up'W } u*"mdL2 } J}?:\y< catch(IOException e){e.printStackTrace ();} QJ%[6S catch(Exception e){e.printStackTrace ();} -h%!#g a Byetc88/ 9fhgCu]$ Utility.log(nFileLength); 8
o^ h\9I | >
t,1T. ]:g;S,{ return nFileLength; 09_5niaz[ } SW; %2 x )w6 0YsBAfRG //保存下载信息(文件指针位置) nm}wdel" private void write_nPos() @hV F}ybp { GeydVT- try{ MGbl-,] output = new DataOutputStream(new FileOutputStream(tmpFile)); T*3>LY+bb output.writeInt(nStartPos.length); #Y>os3] for(int i=0;i<nStartPos.length;i++) I7C*P~32{n { RX\l4H5; // output.writeLong(nPos); 8n'"RaLQ8 output.writeLong(fileSplitterFetch.nStartPos); xtq='s8e output.writeLong(fileSplitterFetch.nEndPos); ;}W-9=81 } a9%^Jvm" output.close(); HAca'!p } UB9n7L(@c catch(IOException e){e.printStackTrace ();} _$vAitUe4S catch(Exception e){e.printStackTrace ();} B&},W* p } {vf4l4J( ^1 U<,< OL0W'C9oA //读取保存的下载信息(文件指针位置) ibj3i7G? private void read_nPos() Ho!dtEs { \2U F J try{ k.@OFkX. DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); {9_}i#,vR int nCount = input.readInt(); K.l7yBm nStartPos = new long[nCount]; 552yzn1 nEndPos = new long[nCount]; }]B H
" for(int i=0;i<nStartPos.length;i++) +r<d z { I}hY @ nStartPos = input.readLong(); V;-$k@$b. nEndPos = input.readLong(); 9\J6G8b>|I } kKlcK_b; input.close(); *=
;M',nx } _X/`7!f catch(IOException e){e.printStackTrace ();} 7FBaN7l catch(Exception e){e.printStackTrace ();} r0'6\MS13 } HQ0fY 2Y-NxW^] }j\_XaB private void processErrorCode(int nErrorCode) y}
W-OLE { jwQ(E System.err.println("Error Code : " + nErrorCode); sc)}r_|g } GB&^<@ B{6wf)[O yd+.hg&J //停止文件下载 +[_mSt public void siteStop() PgMU|O7To { sCrOdJ6| bStop = true; yzH[~O7 for(int i=0;i<nStartPos.length;i++) 8x /]H(J fileSplitterFetch.splitterStop(); ">
]{t[Ib xC}9W6 l.3|0lopX) } IMT]!j&Y, } ^Ee"w7XjD //负责部分文件的抓取
p~bx **FileSplitterFetch.java At$[&%} */ I|eYeJ3 package NetFox; m6 V L edZhI eWw#
T^ import java.io.*; ;GF+0~5> import java.net.*; o1^Rx5 uJ@C-/BD!M _Gb O>'kE public class FileSplitterFetch extends Thread { X={Z5Xxr" w;=g$Bn *%p`Jk-U String sURL; //File URL JQ"R%g`8 long nStartPos; //File Snippet Start Position g\~n5=-D long nEndPos; //File Snippet End Position DV5K)m&G int nThreadID; //Thread's ID i[V\RKH*F boolean bDownOver = false; //Downing is over hwj:$mR boolean bStop = false; //Stop identical [PP&}.k4" FileAccessI fileAccessI = null; //File Access interface tsf)+`vt j.:I{!R# -qNun3 public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException fnZ?YzLI { 2Q81#i'Cm this.sURL = sURL; F!*tE&Se+ this.nStartPos = nStart; tmVGJ+gz this.nEndPos = nEnd; v3I-i|L<) nThreadID = id; P g.j] fileAccessI = new FileAccessI(sName,nStartPos);//定位 Bh0hUE } FzM<0FJRX <Y"h2#M " mR3-+dB/ public void run() 5!V%0EQqw { q>5K:5 while(nStartPos < nEndPos && !bStop) NO'37d { ^X\SwgD2w Uz$.sa =b_/_b$q try{ QFX/x URL url = new URL(sURL); (Rs052m1 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); K}a3Bj, httpConnection.setRequestProperty("User-Agent","NetFox"); (@nEe? String sProperty = "bytes="+nStartPos+"-"; 5SQqE@g% httpConnection.setRequestProperty("RANGE",sProperty); :JD*uu Utility.log(sProperty); _|f_%S8a_= T6^H%;G "fN=Y$G InputStream input = httpConnection.getInputStream(); qS?uMms7w //logResponseHead(httpConnection); `E:&a]ul /kH
7I J<h!H byte[] b = new byte[1024]; /c|X:F!;X# int nRead; RTQtXv6mD while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) -F~"W@9r { 4uy:sCmu nStartPos += fileAccessI.write(b,0,nRead); 9ymx; //if(nThreadID == 1) !HCuae3_ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); =tQ^t4_ } 0/TP`3$X#" D4IP$pAD oUNuM%g9Dy Utility.log("Thread " + nThreadID + " is over!"); Dhze2q)o bDownOver = true; Ra)AQ
n //nPos = fileAccessI.write (b,0,nRead); _/[}PQC6G } ~pWV[oUD catch(Exception e){e.printStackTrace ();} PW QRy } MiN|u } C.N#y`g LCMZw6p <Gw>}/-^ //打印回应的头信息 A(}D76o_ public void logResponseHead(HttpURLConnection con) IlfH { 9YEE.=]T for(int i=1;;i++) F9Co m} { r$WBEt,B String header=con.getHeaderFieldKey(i); a1
v%G if(header!=null) 'izv[{!n{ //responseHeaders.put(header,httpConnection.getHeaderField(header)); /|LQ?n Utility.log(header+" : "+con.getHeaderField(header)); h\lyt(.s else :D:Y-cG*n< break; F XG,DJ: } =x3T+)qCNX } %}[/lIxaE PFI^+'; &1Cif$Y4w public void splitterStop() sDl@ { 7?"-:q bStop = true; zJH:`~GxE } tb/`*Yl@ 9(pF!}1%\ }P\ J?8 } kHz?vVE/l BG^)?_69 =k\Qx),Ir /* y"Ios:v@- **FileAccess.java oZ\zi> Y, *//文件访问(定位,写) ]Wg&r Y0 package NetFox; z*e`2n#\ import java.io.*; ,{Ga7rH*
vWVQ8S. pF<KhE*V public class FileAccessI implements Serializable{ -58Sb"f 1qm
_Qs& //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 {xu~Dx RandomAccessFile oSavedFile; Pj^O8 long nPos; G]RFGwGt d$B+xW %0q)PT\ public FileAccessI() throws IOException }m93AL_y { w~ O)DhC this("",0); nj=nSD } v9MliD' XM~eocn iLk"lcX public FileAccessI(String sName,long nPos) throws IOException r1a/'+ { S
N;1F oSavedFile = new RandomAccessFile(sName,"rw"); vl>_;}W7 this.nPos = nPos; ks7id[~&iY oSavedFile.seek(nPos); $E-c%- } [B@R(z=H 2Q)pT$ 8d[!"lL public synchronized int write(byte[] b,int nStart,int nLen) Yv"-_ { /E^j}H{ int n = -1; f{+X0Oj try{ tvOyT6 ] oSavedFile.write(b,nStart,nLen); %`0*KMO3
n = nLen; $g '4' } [/Xc},HbMe catch(IOException e) ZN}U^9m= { (".WJXB\ e.printStackTrace (); 8V@\$4@b!# } C]M{ [[uZCKi UUEbtZH; return n; j"9Zaq_ } 1O+$"5H l
9bg PBb'`PV } \OVw :~\ y< p!7(ayu /* S4D~`"4$/ **SiteInfoBean.java 8X)1bNGqhe */ ,lQfsntk' package NetFox; cB_3~=fV 9
=D13s(C 9d8U@= public class SiteInfoBean { (|sqN8SbA nmoC(| r t'* 2)U private String sSiteURL; //Site's URL /_i]bM7W private String sFilePath; //Saved File's Path $!K,5^+ private String sFileName; //Saved File's Name k(dNHT private int nSplitter; //Count of Splited Downloading File
\z? - X!K:V~WG #Ti5G"C public SiteInfoBean() eb7~\|9l1i {//nSplitter的缺省值为5 Hr/Q?7g //default value of nSplitter is 5 `q+Ug this("","","",5); 'J: xTp } ?<~P)aVVj M7c53fz .83z = public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) k@Bn}r { #R#|hw sSiteURL= sURL; 9iN}v sFilePath = sPath; 2o1 RJk9 sFileName = sName; @pV&{Vp this.nSplitter = nSpiltter; jN{+$ @cI zfK3$| 28O 3N;a } 79Q>t%rD[ \&4)['4, G`NGt_C public String getSSiteURL() #.|MV}6rQ { 7-c3^5gn{ return sSiteURL; X -_0wR } yT h60U +?uZ~VSl 5mg] su public void setSSiteURL(String value) c{!XDiT]P { vf?m-wh sSiteURL = value; XT\Q"=FD } \"l/D?+Q 6mC% zXR5 V?4G~~F public String getSFilePath() V#\ iO { ^\FOMGai return sFilePath; HfA@tZ5q|U } kx07Ium #RP7?yGM, Df0m public void setSFilePath(String value) 89[OaT_hs { g BV66L sFilePath = value; 7r$'2">K( } <26Jif: q[TW Q9sxI}D )R public String getSFileName() \ O+Hmi^ { ux1SQ8C * return sFileName; OB\jq!" } JV;-P=o1B e*pYlm RhI>Ak;- public void setSFileName(String value) ){"-J&@? { 7hl,dtn7 sFileName = value; ' O d_:] } 6" |+\ Fes/8*- HsAKz]Mq public int getNSplitter() E(0 [/N~ { j/w*2+&v return nSplitter; lU% L } ]L9$JTGF`w {KM5pK?,BJ 'L ]k\GO public void setNSplitter(int nCount) H05U{vR { K6e_RzP,.w nSplitter = nCount; mW_ N-z } ;09U*S$eK }
gIcm`5+T #B8V2_M A`1-c /* sNZOm $ **Utility.java y=zs6HaS */ "qoJIwl#q package NetFox; .t.4y.
97 ='6@^6y wcW7k(+0 public class Utility { :PNhX2F qRXHaQi@9 F]cc?r312 public Utility() VVqpzDoXG { oxLO[js g ,yB^^% ,15$$3z /E } zS'{F>w 7pM&))R //线程睡眠 b6g/SIae public static void sleep(int nSecond) WS"v"J% { WnhH]WY try{ !}q@O-}j Thread.sleep(nSecond); AmK g;9LS } k#G+<7c< catch(Exception e) ;}'Z2gZB { Q}uh`?t e.printStackTrace (); wsgT`M'J[ } @B9#Hrc } w:2yFC ]W7&ZpF //日志 Si68_]:^ public static void log(String sMsg) n/^QPR$>. { aT8A+=K6 System.err.println(sMsg); 40$9./fe) } S*%:ID|/C2 rd^j< )2J#pz?. public static void log(int sMsg) $x2G/5? { 0OBwe6* System.err.println(sMsg); RQ,X0pS } qWJap-hb } {'cdi` %:y"o_X_ d.k'\1o /* j6Au<P **TestMethod.java t![972.& */ 1pT/`x package NetFox; 5;A=8bryU ;0}C2Cz' vqo ~?9z[e public class TestMethod { rLcXo%w ZWx4/G @}{Fw;,(7n public TestMethod() ._<gc;G { ///xx/weblogic60b2_win.exe be'&tsZ9 try{ $it>*% SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); 5K00z?kD2V //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); M] W5%3do SiteFileFetch fileFetch = new SiteFileFetch(bean); '8b=4mrbH fileFetch.start(); _#w5hXcu } a]4|XJ_ catch(Exception e){e.printStackTrace ();} j2 jUrl uKo4nXVtp mWuhXY^Q } D1EHT} t}gK)"g u HXb=U public static void main(String[] args) 6e;8\1^ { -;$jo- new TestMethod(); jyC>~}? }
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