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/* lMXLd91 **SiteFileFetch.java [\ppK C */ H^w Inkf> package NetFox; _We4% import java.io.*; 6J\A%i import java.net.*; Dt+uf5o( IeE6?!,) 5'3H$%dC public class SiteFileFetch extends Thread { D4QLlP st(Y{Gs 'Z^KpW SiteInfoBean siteInfoBean = null; //文件信息Bean "NO*(<C.R long[] nStartPos; //开始位置 &vS @-K long[] nEndPos; //结束位置 ;8<lgZ9H< FileSplitterFetch[] fileSplitterFetch; //子线程对象 Kdd5ysTQ long nFileLength; //文件长度 #TY[\$BHs boolean bFirst = true; //是否第一次取文件 d0 yZ9-t boolean bStop = false; //停止标志 %@[ ~s,6< File tmpFile; //文件下载的临时信息 CLY>M`%?+p DataOutputStream output; //输出到文件的输出流 ]=0$-ImQ@x @)S d3xw[ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) BQ77n2(@ public SiteFileFetch(SiteInfoBean bean) throws IOException tumYZ)nW { i.>d#S siteInfoBean = bean; 17;qJ_T) //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 4ew#@ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); v@]\
P<E if(tmpFile.exists ()) C Z/:(sOJ { q8fnUK?i bFirst = false; hk+"c^g:j< read_nPos(); si>gYO } {DGnh1 else *[wj ) { ~px)Jd nStartPos = new long[bean.getNSplitter()]; WzO[-csy nEndPos = new long[bean.getNSplitter()]; V]A*' ke/ } 1ba* U~OEg ?O#,|\v?] V']1j Qx}hiv/ } X0gWTs `}&}2k }Fgp*x-G public void run() &$E.rgtg { )u(Dq u\t //获得文件长度 bmGtYv //分割文件 GxcW^{; //实例FileSplitterFetch 8AVG pL //启动FileSplitterFetch线程 :l?/]K //等待子线程返回 B"fKv0 try{ /kK:{ if(bFirst) Hqm1[G) { k8ej. nFileLength = getFileSize(); )1S"D~j- if(nFileLength == -1) \{M/Do: { 5Gsjt+
o System.err.println("File Length is not known!"); 0w
]
pDj } D<XRu4^; else if(nFileLength == -2) y5lhmbl: e { !7fVO2m T System.err.println("File is not access!"); dW>$C_`? } *%`jcF else Hs6}~d { +c_8~C for(int i=0;i<nStartPos.length;i++) [}bPkD { 7FD.3/ nStartPos = (long)(i*(nFileLength/nStartPos.length)); Luu.p< } #sp8 !8|y for(int i=0;i<nEndPos.length-1;i++) 2XGbqZj { $ACD6u6 nEndPos = nStartPos[i+1]; 0}y-DCuQ } @je vY81) nEndPos[nEndPos.length-1] = nFileLength; %oEvp{I } aXO|%qX } /0I=?+QSo Di8;Tq \mp5G&+/Q //启动子线程 %G>V .d fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; u9R:2ah&K for(int i=0;i<nStartPos.length;i++) U/I+A|S[ { y153ax fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 1$G'Kg/ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), X-=J7G`\h# nStartPos,nEndPos,i); PFnq:G^L Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); qQ "O;_ fileSplitterFetch.start(); AilfeHG } N:Zf4 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), gR:21*&cz siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); |Zrkk>GW: // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 0ge^pO\Z nEndPos = " + nFileLength); d8Kxtg
Y // fileSplitterFetch[nPos.length-1].start(); =C.WM*= ' a2N4Jg@ @ag*zl //等待子线程结束 mrz@Y0mgL //int count = 0; ngHPOI16 //是否结束while循环 LQrm/)4bF5 boolean breakWhile = false; Ghpk0ia%d eEG]JH $1$T2'C~+ while(!bStop) <"XDIvpc%L { F"M$ "rC] write_nPos(); +O,h<*y Utility.sleep(500); FI$#x%A breakWhile = true; jB-)/8.qk CD+2
w
cy +B0G[k7 for(int i=0;i<nStartPos.length;i++) v/B:n
{ K'zG[[P if(!fileSplitterFetch.bDownOver) {l -V { v
lsS breakWhile = false; Z'I0e9Jw break; !p~K;p, } @)YQiE$ } XUyoZl? if(breakWhile) ib%x&?|| break; \7Fkeo+ 2i3& 3oz]O pD>^Dfd //count++; @j Y_^8#S //if(count>4) W^^}-9 // siteStop(); WaRYrTDv64 } MjHjL~Tg #)xg$9LQb wzRIvm{ System.err.println("文件下载结束!"); Q5s?/r } Xqac$%[3 catch(Exception e){e.printStackTrace ();} S(f V ,;Z } C8 b%r|^# Ag!#epi{0 !bHM:!6^ //获得文件长度 a~-^$Fzgy public long getFileSize() S3k>34_%9 { E |A,NPf%I int nFileLength = -1; !7K-Kqn try{ xf.2Ig URL url = new URL(siteInfoBean.getSSiteURL()); >xt*( j&} HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 5E+k}S]M$ httpConnection.setRequestProperty("User-Agent","NetFox"); KQ x<{-G6 +i[w& P :a4FO int responseCode=httpConnection.getResponseCode(); Um$a9S8b& if(responseCode>=400) UT9=S21 { y=jTS processErrorCode(responseCode); -~HlME*~f return -2; //-2 represent access is error [[[QBplJ } {:3XP<hqN M\s^>7es -0)So String sHeader; ~"*;lT5KX B43o_H|s d.7Xvx0Yww for(int i=1;;i++) p ?HODwZ { ibOXh U //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 79^on8 k} //Utility.log(in.readLine()); swDSV1alMB sHeader=httpConnection.getHeaderFieldKey(i); 6L6 Lk if(sHeader!=null) !!c.cv' { Ik#>6 if(sHeader.equals("Content-Length")) TLL.Ch|#Y { e< Ee2pGX nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); Z6cG<,DQ break; YSuwV)Y } ^j2:fJOU# } IpxFME%! else 7<=7RPWmD break; i#jCf3%+
h } ^saJfr x } y(RbW_
? catch(IOException e){e.printStackTrace ();} g"3h#SMb catch(Exception e){e.printStackTrace ();} NRKAEf_#w uREc9z`Q' ~P5!VNJ;r Utility.log(nFileLength); omV.Qb'NS Dz&4za+{ qvOBvUR} return nFileLength; ``kKi3TWJ }
YV 9*B qR_"aQ7s2 %;9eh' //保存下载信息(文件指针位置) ZUyM:$ private void write_nPos() zYOPE 6E { |k'I?:' try{ jkNZv. )p output = new DataOutputStream(new FileOutputStream(tmpFile)); XEZ6%Q_ output.writeInt(nStartPos.length); $Mx.8FC + for(int i=0;i<nStartPos.length;i++) kmW!0hm;e { \]J"e% // output.writeLong(nPos); \Mlj
7.u] output.writeLong(fileSplitterFetch.nStartPos); q_f
v1U3 output.writeLong(fileSplitterFetch.nEndPos); tazBZ'\c } y|KDh'Y output.close(); #%e`OA(b } )m[!HE`cZ catch(IOException e){e.printStackTrace ();} ,`|KNw5 catch(Exception e){e.printStackTrace ();} d*3R0Q|#{ } ?=IbiT qRB7I:m-Wi vfhip"1 //读取保存的下载信息(文件指针位置) Qb# S)[6s+ private void read_nPos() V!KtF { y&__2t^u try{ TF^]^XS' DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 3iWLo Qm int nCount = input.readInt(); zMrZ[AU nStartPos = new long[nCount]; Zt` ,DM nEndPos = new long[nCount]; xs &vgel> for(int i=0;i<nStartPos.length;i++) ,75,~ { l!i B
-?'u nStartPos = input.readLong(); kd\yHI9A nEndPos = input.readLong(); Mdwh-Cis/ } !s)2H/KM 8 input.close(); $]81 s` } &8&WY1cU catch(IOException e){e.printStackTrace ();} *pasI.2s# catch(Exception e){e.printStackTrace ();} N=+Up\h } 1 *-58N* n6o}$]H 71 /6=aq>n private void processErrorCode(int nErrorCode) OClY,@ { Eun%uah6c System.err.println("Error Code : " + nErrorCode); r9vC&pWZ } |E7]69=P ~`N|sI, G8oQSo;D //停止文件下载 NM]6 o public void siteStop() I3s}t$`y( { 8'cD K[L bStop = true; 3YT _GW{ for(int i=0;i<nStartPos.length;i++) 'ZDa *9nkF fileSplitterFetch.splitterStop(); 1g/mzC AARhGx|L< wOk:Q4OjL } Yp
?
2< } |R[m&uOib //负责部分文件的抓取 H{GbOI. **FileSplitterFetch.java cL
WM]\Y */ 9Pb0Olh package NetFox; uPp(l4(+ ohh 1DsB fg1 zT~ import java.io.*; =q"3a9pb7 import java.net.*; yz+r@I5 uC;@Yi8 ss2:8up 99 public class FileSplitterFetch extends Thread { /n_HUY Y.C*|p# QnGJ4F String sURL; //File URL } M~AkJL long nStartPos; //File Snippet Start Position ]jYl:41yI long nEndPos; //File Snippet End Position dvj`%?= int nThreadID; //Thread's ID <n`|zQ boolean bDownOver = false; //Downing is over "M*\,IH boolean bStop = false; //Stop identical '/p5tw8 FileAccessI fileAccessI = null; //File Access interface I%s/h4x^B[ E|fPI u G37_
`C public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException . }1!MK5 { BW*zj=N% this.sURL = sURL; 3~S~)quwP this.nStartPos = nStart; O0I/^ this.nEndPos = nEnd; "{:*fI;! nThreadID = id; _6[NYv$" fileAccessI = new FileAccessI(sName,nStartPos);//定位 ~gAx } }z*p2)v` [p(C:rH [lJ[kr*7 public void run() N,1wfOE { Fq3;7Cq=hD while(nStartPos < nEndPos && !bStop) =Vv{ td { & 3a+6!L[ l%:_#1?isf l{3utQH-=z try{ /za,&7sf URL url = new URL(sURL); oc?VAF HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); &KB{,:)? httpConnection.setRequestProperty("User-Agent","NetFox"); \E30.>%, String sProperty = "bytes="+nStartPos+"-"; qjFgy)qV httpConnection.setRequestProperty("RANGE",sProperty); Yk5kC0B Utility.log(sProperty); lV1|\~?4 MWuVV=rd8a "N;|~S)w! InputStream input = httpConnection.getInputStream(); S,v`rmI //logResponseHead(httpConnection); BZBsE
:(F 'F~u \m=E B?4\IXek byte[] b = new byte[1024]; I
F@M int nRead; )2A4vU-IR. while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) oa4}GNH { |
jkmh6 nStartPos += fileAccessI.write(b,0,nRead); nk{1z\D{ //if(nThreadID == 1) ZAP+jX; // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos);
1Li@O[%X< } bM'AD[ Ob6vg^# ibq@0CR Utility.log("Thread " + nThreadID + " is over!"); ,yF)7fN bDownOver = true; ~:@H6Ke[ //nPos = fileAccessI.write (b,0,nRead); w*}9;l } l1??b
catch(Exception e){e.printStackTrace ();} :)z_q!$j } B?M+`; } y/FisX )v9[/
]*P qq`RfZjL //打印回应的头信息 \z{Y(dS public void logResponseHead(HttpURLConnection con) M Q6Y^,B { ,y >Na{@Y for(int i=1;;i++) @K/Ia!Lw { @.{ String header=con.getHeaderFieldKey(i); j.6kjQN if(header!=null) 2*|]#W //responseHeaders.put(header,httpConnection.getHeaderField(header)); UdGoPzN Utility.log(header+" : "+con.getHeaderField(header)); \x!>5Z
Y else LWI~m2 break; g U?) } a:fHTU=\p } TU/J]'))C aPC!M4# Vo%d;>!G\; public void splitterStop() H@zk8]_P { _x!pMj(A bStop = true; w# e'K-= } [a3
0iE (Ka#6
d}ZHY[ } {ZcZ\Q;6 -db+Y:xUZ z)%1 i /* lK4+8VZ **FileAccess.java 4(R2V] *//文件访问(定位,写) k mjm6 package NetFox; _a&|,ajy> import java.io.*; .H"hRYPC? FMVmH!E T?Y\~.+99 public class FileAccessI implements Serializable{ pd#/;LT b5DrwX{Ff //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 L,6Y=? RandomAccessFile oSavedFile; HhL%iy1 long nPos; 0U>Q<I} V%ch' 4i,SiFKB public FileAccessI() throws IOException lQ/XJw { `y}d)"! this("",0); q8Dwu3D } G)&'8W F5o qx)k1 QY GcnY=%L? public FileAccessI(String sName,long nPos) throws IOException ZkW@ |v
{ ju]]| oSavedFile = new RandomAccessFile(sName,"rw"); hptuTBD this.nPos = nPos; PlZiTP oSavedFile.seek(nPos); K_QCYS. } [Ni4[\ Y9;Mey*oW ?_aR-[XRg public synchronized int write(byte[] b,int nStart,int nLen) WM"^#=+$ { I*}#nY0+ int n = -1; C t)MvZ try{ sh ;uKzQ oSavedFile.write(b,nStart,nLen); 3ZlI$r( n = nLen; >K
:"[? } "NU".q catch(IOException e) ?N*0S'dY { c~xo@[NaS e.printStackTrace (); !9,
pX } $VWzv4^: 0>iFXw:fn 3J
T3;O return n; U[b;#Y1X } _m],(J=,z bSf(DSqx Zjg\jo } "ILWIzf.] @@IA35'tc {yR)}r /* 6[.Mx}h6 **SiteInfoBean.java X:lPWz!7{ */ Net)l@IB] package NetFox; W(h8!} N}fUBX4k N-`;\ public class SiteInfoBean { xXZKj pFTlhj)1 n=? 0g;1! private String sSiteURL; //Site's URL S |>$0P4W( private String sFilePath; //Saved File's Path 7E`(8i private String sFileName; //Saved File's Name 5L}>+js2 private int nSplitter; //Count of Splited Downloading File 5lnSa+_/f ulf/C%t,R <zuE=0P~% public SiteInfoBean() ex\W]5 {//nSplitter的缺省值为5 H@E ")@92 //default value of nSplitter is 5 T[-c| this("","","",5); ]M;6o@hq } q9Sz7_K -Zg @D(pF Reu{
public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) TE%#$q { `t0f L\T sSiteURL= sURL; i 1I>RK sFilePath = sPath; (YHvGGr sFileName = sName; $-Pqs
^g this.nSplitter = nSpiltter; >}b6J7_ IzdTXc
f tRnW%F5 } 3g[j%`k p*`SGX ^Opy6Bqb public String getSSiteURL() neh;`7~5@K { H:-A; f!Z return sSiteURL; x$GsDV } ?[VpN2* 8i;)|z7 yW^IN8fm public void setSSiteURL(String value) {R-82% X { kt{C7qpD sSiteURL = value; ZQ~myqx,+L } [W$Z60?RR
Hp} 6_<s=nTX public String getSFilePath() }l(m5 { $i:||L^8p return sFilePath; u'i%~(:$\) } LkGf|yd_ s!ZW'`4!z z8/xGQn public void setSFilePath(String value) pp]_/46nN { <*"pra{3 sFilePath = value; OR\DTLIl } pEVgJ/> #[a"%byTR ) wY!/& public String getSFileName() -~\.n { 6f?BltFaN return sFileName; 7q!yCU } 4b2mtLn_ Mf:M3H%YV+ BKQIo)g.G public void setSFileName(String value) /Y[o=Uyl { -nk#d%a\ sFileName = value; d)0LVa( } (+UmUx= LR3`=Z9 ~#"7,r Qp public int getNSplitter() aLKMDiT { v0`qMBr1y return nSplitter; h zZ-$IX X } cc41b*ci$ 3X$Q, iog #
, public void setNSplitter(int nCount) 8jggc#. { e(~'pk"mZ nSplitter = nCount; :YqQlr\ } 6!+X.+ } ^+*GbY$' 1GG>.RCP y98JiNq /* cXS;z.M\_ **Utility.java W ""*hJ */ 4r1<,{gCS package NetFox; NTm<6Is` RQ^m6)BTo CYt jY~ public class Utility { |
"Jx j?\$G.Y gT(th9'+z public Utility() jj!N39f { }UKgF. WVS$O99Y LBmM{Gu } cX%: (@)2PO/ //线程睡眠 q]"2hLq public static void sleep(int nSecond) C}mYt/ { eC6>yD6D try{ \fK47oV Thread.sleep(nSecond); |P~O15V*Q } GS
;HtUQ catch(Exception e) $A;7Em { C}b|2y e.printStackTrace (); #y=ZP:{:t } R2}kz. } %n05Jitl @up&q //日志 7
9Qc`3a public static void log(String sMsg) 2J;kD2"! { I %|@3=Yc System.err.println(sMsg); %cH8;5U40 } |XKOXa3. n1QEu"~Zj fav5e'[$ public static void log(int sMsg) 7hB#x]oQo { 59{;VY81 System.err.println(sMsg); >u=%Lz"J }
h6u2j p(+ } q&zny2]) J>`v.8y Mv.Ciyc /* =X%!YZk p **TestMethod.java I@n*[EC */ -xJX _6}A package NetFox; iv:,fkwG {(rf/:X!p X*pZNz&E public class TestMethod { T/[f5?p lij B#1<8* 9s!
2 wwh public TestMethod() /~40rXH2C { ///xx/weblogic60b2_win.exe Hm>-LOCcl try{ 7\mDBG SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); 8h2D+1,PZC //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); OmB
TA=E< SiteFileFetch fileFetch = new SiteFileFetch(bean); Y[W6Sc fileFetch.start(); i<%m Iq1L } C<_Urnmn catch(Exception e){e.printStackTrace ();} Da-u-_~ B@-|b hZcmP"wgC1 } \B_i$<Sz zhNQuK,L l+%Fl=Q2em public static void main(String[] args) 4~!Eje! { LU%#mY new TestMethod(); R]Hz8 _X } yahAD.Xuo@ } R.K?
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