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/* KC:4 **SiteFileFetch.java 9K':Fn2, */ j yRSEk$ package NetFox; `uh@iD'KI import java.io.*; k0_$M{@Y import java.net.*; drKjLo[y xwnoZ&h p*`SGX public class SiteFileFetch extends Thread { lhoq3A ~59`S#ax/l 0^_lj9B! SiteInfoBean siteInfoBean = null; //文件信息Bean $[iT~B$ long[] nStartPos; //开始位置 VS|("** long[] nEndPos; //结束位置 7TkxvSL X FileSplitterFetch[] fileSplitterFetch; //子线程对象 C$LRY~\ long nFileLength; //文件长度 c5E#QV0&v~ boolean bFirst = true; //是否第一次取文件 6WN(22Io boolean bStop = false; //停止标志 LkGf|yd_ File tmpFile; //文件下载的临时信息 B>Cs&}Y! DataOutputStream output; //输出到文件的输出流 eR-=<0Iw; OR\DTLIl //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 'B (eMnLg public SiteFileFetch(SiteInfoBean bean) throws IOException o}MzqKfu { 6f?BltFaN siteInfoBean = bean; Q"|kW[Sg //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 6W;?8Z_1 tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); *)bd1B# if(tmpFile.exists ()) l]Ui@X { NdsX*o@a bFirst = false; )W]>\=@Y read_nPos(); v0`qMBr1y } tyuk{*Me: else e" Eqi- { qsihQd nStartPos = new long[bean.getNSplitter()]; x(9;!4O> nEndPos = new long[bean.getNSplitter()]; Fkcx+d } Jf?S9r5 Q Er"R;l]xJ LgP> u?]n Qq T/1^imS } kqD*TJA >wKu6-
]a eb!s'@ public void run() jQ_dw\
{0 {
l*K I //获得文件长度 O
xT}I //分割文件 mN\%fJ7 //实例FileSplitterFetch %9T~8L
@. //启动FileSplitterFetch线程 Dc.n-ipv$ //等待子线程返回 M!Z*QY."P try{ hIVI\U, if(bFirst) 3cOY0Z#T { jVad)2D nFileLength = getFileSize(); *%X6F~h(u if(nFileLength == -1) vZb|!#I { Cs:+93w System.err.println("File Length is not known!"); ^n&]HzT`y } s>jr1~~3O_ else if(nFileLength == -2) X-kXg)!Bg { ]6{(Hjt System.err.println("File is not access!"); qGnPnQc } By?nd) else 7~wFU*P1 { 5zNSEI"PY for(int i=0;i<nStartPos.length;i++) }+Rgx@XZ\ { /a[V!<"R nStartPos = (long)(i*(nFileLength/nStartPos.length)); EI1W
.V>@ } Nfv="t9e for(int i=0;i<nEndPos.length-1;i++) onnI ! { Z+Yeg nEndPos = nStartPos[i+1]; n1QEu"~Zj } [D3+cDph nEndPos[nEndPos.length-1] = nFileLength; c ]>DI&$;J } 3ty4D 2y } XkPv*%Er8 8P,l>HA rO/a,vV //启动子线程 -#LjI. fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Hf VHI1f for(int i=0;i<nStartPos.length;i++) iv:,fkwG { izMYVI?0 fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), P+Wm9xR2d siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), lij B#1<8* nStartPos,nEndPos,i); 3A-*vaySV Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); DH5bpg&T fileSplitterFetch.start(); a9[mZVMgUK } gUl1CH& // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ,H>W:O siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); i<%m Iq1L // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", bqSMDK nEndPos = " + nFileLength); HHz;0V4w? // fileSplitterFetch[nPos.length-1].start(); }@d>, 1DU {!L=u/qs" ?-e7e% //等待子线程结束 ^6Yd} //int count = 0; 8tU>DJ}0 //是否结束while循环 R7lYu\mA boolean breakWhile = false; M~uMY+>
:-z&Y492 FJ{=2]x| while(!bStop) /vHYM S { C
8N%X2R write_nPos(); |2O')3p"9 Utility.sleep(500); j(j#0dXLh breakWhile = true; S+r^B?a<oM ".gNeY6)x W!t{rI7 2 for(int i=0;i<nStartPos.length;i++) ;AKwx|I$g { alFNSRY if(!fileSplitterFetch.bDownOver) !x>,N%~ { $!f!,fw+ breakWhile = false; xk& NAB break; GQb i$kl } x|8^i6xB } u^t$cLIZ if(breakWhile) g0PT8]8 break; ;`DD}j` 9TC)
w| 'r\ 4}Ik //count++; P1MvtI4gm //if(count>4) =NadAyv // siteStop(); 6ZcXS } msiu8E Vz{>cSz# `{[RjM` System.err.println("文件下载结束!"); SrF x_n } e?b)p5g catch(Exception e){e.printStackTrace ();} !scD|ti } >TY6O.] V C-d0E0 l-<`m#/v //获得文件长度 M%I@<~wl public long getFileSize() 2VA!&`I { KFU%DU G int nFileLength = -1; ^ *0'\/N& try{ QOH<]~3J URL url = new URL(siteInfoBean.getSSiteURL()); A
(okv HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 8#w)X/ httpConnection.setRequestProperty("User-Agent","NetFox"); #Y2i*:< 9gy(IRGq/ s3:9$.tiR[ int responseCode=httpConnection.getResponseCode(); 7CGyC[[T~ if(responseCode>=400) s9 @Sd { iG#}` processErrorCode(responseCode); &l m# return -2; //-2 represent access is error 5!(?m~jJ } 2z\e\I BEUK}T K4 ,$N#Us(Wa String sHeader; Z+4D.bA X:|8vS+0gU $=)gpPT for(int i=1;;i++) Su7bm1 { ((bTwx //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); '#.#$8l //Utility.log(in.readLine()); 9AQxNbs sHeader=httpConnection.getHeaderFieldKey(i); Rko M~`CT if(sHeader!=null) g<wRN#B { pr&=n;_ n if(sHeader.equals("Content-Length")) IeP
WOpj3 { __Nv0Ru nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); w!&~??&=} break; %S \8. } 9t$]X>} } M'L;N!1A else %\Wf^6Y^ break; Mxl]"?z } =5x&8i } fuMJdAuY7d catch(IOException e){e.printStackTrace ();} /.1.MssQM catch(Exception e){e.printStackTrace ();} }t%W1UJ 4a''Mi`u 69G`2_eKCp Utility.log(nFileLength); =0
CU)|-*uiK A/}W&bnluD return nFileLength; VIJ<``9[ } k{I01 1:M@&1LYp U;q];e:,=} //保存下载信息(文件指针位置) T~4N+fK private void write_nPos() OLC{iD# { .@ F]Pht try{ ,|kDsR! output = new DataOutputStream(new FileOutputStream(tmpFile)); =]C]= output.writeInt(nStartPos.length); 7U|mu~$.! for(int i=0;i<nStartPos.length;i++) bm% $86 { _zWfI.o // output.writeLong(nPos); [U/(<?F{( output.writeLong(fileSplitterFetch.nStartPos); .iD*>M:W output.writeLong(fileSplitterFetch.nEndPos); w= P9FxB } JW.=T) output.close(); {0"YOS`3AX } 'T<iHV& catch(IOException e){e.printStackTrace ();} A:l@_*C.. catch(Exception e){e.printStackTrace ();} 5L,}e<S$ } P
[Uy \</b4iR)LT :GpDg //读取保存的下载信息(文件指针位置) L|@y&di private void read_nPos() $37
g]ZD { !V2/A1? try{
Q6'x\ DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); GVHV =E int nCount = input.readInt(); /,=@8k!t? nStartPos = new long[nCount]; ' Z0r>. nEndPos = new long[nCount]; )B,|@ynu for(int i=0;i<nStartPos.length;i++) @f]{>OS { y\dEk:\) nStartPos = input.readLong(); .
\ nEndPos = input.readLong(); R218(8S } *}k;L74| input.close(); YW u cvw& } $Iv2j">3) catch(IOException e){e.printStackTrace ();} ,1OyN]f3 catch(Exception e){e.printStackTrace ();} X3'H
`/ } +6wiOHB` Wjhvxk < -W*$?^ private void processErrorCode(int nErrorCode) <\kr1qHH {
`\Hf]b System.err.println("Error Code : " + nErrorCode); >SPh2[f } Z87_ #5 M9zfT!- sBrI}[oyx //停止文件下载 /|6;Z}2 public void siteStop() 3bnS
W5 { ^&y$Wd]6 bStop = true; M%jPH for(int i=0;i<nStartPos.length;i++) F 8B#}%JE fileSplitterFetch.splitterStop(); |$5[(6T| S[WG$ P#=`2a#G } |2{wG4 } ~ vqa7~}m //负责部分文件的抓取 vWGwVH/K **FileSplitterFetch.java _h}kp\sps */ M Y|w package NetFox; yj^+G M(/r%-D Q-1vw6d import java.io.*; 8#vc(04( import java.net.*; RjN{%YkXe O{#=d nqLA}u4IM public class FileSplitterFetch extends Thread { "I(xgx* 5LOo8xN *QH28%^ String sURL; //File URL i>(e}<i long nStartPos; //File Snippet Start Position 6i}iAP|0 long nEndPos; //File Snippet End Position K.0:C`C int nThreadID; //Thread's ID ~c\e'≻ boolean bDownOver = false; //Downing is over z*-2.}&U< boolean bStop = false; //Stop identical SJHr_bawd FileAccessI fileAccessI = null; //File Access interface )rC6*eR AJ=qn a j:VbrR public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException t2)rUWg { 8SGo9[U2 this.sURL = sURL; >Z5gSs0 this.nStartPos = nStart; %\:[ o this.nEndPos = nEnd; o,)?!{k} nThreadID = id; RNe^;
B fileAccessI = new FileAccessI(sName,nStartPos);//定位 sfNE68I2 } t;}:waZD -X"p:=;j 5rU[Tir public void run() Sn|BlXrey { V{!J-nO while(nStartPos < nEndPos && !bStop) h%uZYsK { qHrc9fB oaIi2=Tf W>j !Q^? try{ z62;cv URL url = new URL(sURL); IhVO@KJI HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); l`f/4vy httpConnection.setRequestProperty("User-Agent","NetFox"); 6V7B;tB String sProperty = "bytes="+nStartPos+"-"; a m|F?|1 httpConnection.setRequestProperty("RANGE",sProperty); UdpF@Q Utility.log(sProperty); q!|*oUW f,kZ\Ia'r PoxK{Y InputStream input = httpConnection.getInputStream(); !1$])VQWI //logResponseHead(httpConnection); 7+\+DujE$ 8@MV%MVy$ }&wUr>= byte[] b = new byte[1024]; d?A
0MKnl int nRead; t.xxSU5~% while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) e&&53? { BRgXr nStartPos += fileAccessI.write(b,0,nRead); JvVWG'Z" //if(nThreadID == 1) cj$[E]B3V* // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); UG+d-&~Ll } 5kCUaPu v|dBSX9k0 wea-zN Utility.log("Thread " + nThreadID + " is over!"); b4[bL2J$h1 bDownOver = true; H9YW //nPos = fileAccessI.write (b,0,nRead); Y^$X*U/q%U } Y 0d<~* catch(Exception e){e.printStackTrace ();} t gI{`jS% } TFlet"ge= } j+$rj ;:\<gVi: #49kjv@ //打印回应的头信息 g?z/2zKR public void logResponseHead(HttpURLConnection con) 3G}x;Cp\D { (nf~x for(int i=1;;i++) Z2qW\E^_r { =8AO: String header=con.getHeaderFieldKey(i); K,+LG7ec if(header!=null) ~A'!2 //responseHeaders.put(header,httpConnection.getHeaderField(header)); ,!#*GZ.ix Utility.log(header+" : "+con.getHeaderField(header)); C~2F9Pg else haK3?A,"_A break; gG<~-8uQ } 6-$jkto } VVac: E8$20Ue (^TF%(H public void splitterStop() /:~\5}tW { HK,cJahq bStop = true; ?XrQ53 } 8']M^|1 #U!
_U+K X[]m _@ v } &"f"; *|%@6I( *W,]>v0%T /* R!\_rc1/ **FileAccess.java ^1iSn)& *//文件访问(定位,写) ~zCEpU|@N package NetFox; {.?ZHy\Rk import java.io.*; Uc7mOa}4 n0r+A^] JjPKR?[> public class FileAccessI implements Serializable{ Uzz'.K(Mv| 0b+Wc43}K //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 @L<*9sLWh RandomAccessFile oSavedFile; *SU\ABcov long nPos; ]zj9A]i:a _4"mAPt 8ja$g, public FileAccessI() throws IOException :o0JY= 5 { HePUWL' this("",0); 2D75:@JL}| } qkt0**\ o3Yb7h9 O@u?h9?cf> public FileAccessI(String sName,long nPos) throws IOException 6h|q'.Y { sD{Wxv oSavedFile = new RandomAccessFile(sName,"rw"); :[wsKFaV+ this.nPos = nPos; R<\F:9 oSavedFile.seek(nPos); G,?hp>lj } En~5"yW5>] 'n{Nvt.c tjIl-IQ public synchronized int write(byte[] b,int nStart,int nLen) oe%}?u { AqWUwK9T int n = -1; Huy5-[)15 try{ [$qyF|/K`n oSavedFile.write(b,nStart,nLen); AJh w n = nLen; U &C!} } 9!6f-K catch(IOException e) 'Q|M'5' { DgUT5t1 e.printStackTrace (); r[2ILe } }Ga\wV GR&z, .:@Ykdm4I return n; fKeT,U`W } 'C`U"I kh
{p%<r{ _"E%xM*r } >pU$wq|i wP6Fl L
i*|\KM?P /* Z'4./ **SiteInfoBean.java Wi*.TWz3 */ Gr7=:+0n|P package NetFox; e5* ni/P LgKaPg$ _Tf4WFu2 public class SiteInfoBean { /M|262% kjg~n9#T 4 8:>NW private String sSiteURL; //Site's URL wLi4G@jJ private String sFilePath; //Saved File's Path 3 jGWkby0 private String sFileName; //Saved File's Name )k\H@Dy%$ private int nSplitter; //Count of Splited Downloading File +1uF !G&l KV}FZ3jY qs1 ?IYD public SiteInfoBean() 4A8;tU$& {//nSplitter的缺省值为5 G'oG</A //default value of nSplitter is 5 N/Z2hn/m this("","","",5); YUx.BZf7 } 419x+3>} ]^Qn ?j40}
B]]d public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) R@/"B8H { 5 xppKt sSiteURL= sURL; 6N",-c sFilePath = sPath; 43|XSyS sFileName = sName; 4[.oPK=i this.nSplitter = nSpiltter; 4[;X{ ! F<L
EQ7T
brW :C?} } 3?c3<`TW 5k`l$mW{ %6t2ohO" public String getSSiteURL() \P j { !zkZQ2{Wn return sSiteURL; u -;_y='m } eIz<)-7: :ctu5{"UJ _oHNkKQ public void setSSiteURL(String value) [#l*_0 { MXw hxk#E sSiteURL = value; 3
^>l\, } <QA6/Ef7 Jl5c
[F XWUWY public String getSFilePath() /LvRP yj@ { N"" BCh" return sFilePath; N.\-
8?> } {>R:vH8 &X|#R1\ e7m*rh%5> public void setSFilePath(String value) JTr vnA { S'4(0j sFilePath = value; rf?qdd(~cH } yUZb#%n "Q!(52_@J ~Lm$i6E< public String getSFileName() U&Wt%U{ { p^Ak1qm~e return sFileName; r~/ } rf>0H^r ?$*SjZt g'H$R~ag public void setSFileName(String value) G_0(
|% { n;@bLJ$W sFileName = value; fDT%! } tKuVQH~D yKa{08X: 4Uphfzv3D public int getNSplitter() l|/ep:x8 { P!H_1RwXKC return nSplitter; *1v[kWa? } q=%RDG+ 9;r)#3Q[^ hEBY8=gK public void setNSplitter(int nCount) ]^lw*724'> { $oj:e?8N nSplitter = nCount; PmKeF} } %>~sJ0 } 4kBaB 2 lj'"nm MRb-H1+Xf /* OR%'K2C6S **Utility.java U%<koD[, */ d/[;
`ZD+ package NetFox; BQ=PW|[ g;2?F[8Th -o!$tI& public class Utility { |N%fMPKa In18_bc U.DDaT1 public Utility() M%ICdIc' { ` :o4'CG 9QDFEYG &3bx`C } jN[`L%Qm <eQj`HL //线程睡眠 \Ta"}TF8 public static void sleep(int nSecond) &Xf^Iu { 3BtaH#ZY try{ D|e
uX7b Thread.sleep(nSecond); k@/sn(x } fh](K'P#^ catch(Exception e) p-Kz-+A [ { / c AUl e.printStackTrace (); DNr@u/>vB } wB!Nc Y\p } gj*+\3KO@a j!U-'zJ //日志 Dpl A? public static void log(String sMsg) .P[ _<8 { thifRd$4 System.err.println(sMsg); :_g$.h%% } 4lKq{X5< ?QFpv#4 wVEm:/;z& public static void log(int sMsg) AaWs}M { ioYGZ%RG# System.err.println(sMsg); 5@+,Xh,H|t } ,N!o } 2E}*v5b, P_*" dza _V7r1fY: /* umt.Um.m2 **TestMethod.java YVHm{A1b0 */ FB{KH . package NetFox; -OapVa c ;#vKi0V7 whi`Z:~ public class TestMethod { %M7` Hwu k'Sp. |wH5sjT public TestMethod() ,*7 (%k^` { ///xx/weblogic60b2_win.exe :lf+W try{ rA%usaW SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); -"=U?>( //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); D-5VC9{ SiteFileFetch fileFetch = new SiteFileFetch(bean); 0w&27wW fileFetch.start(); {q`jDDM } t!r A%* catch(Exception e){e.printStackTrace ();} $5ak_@AC P)Rh=U j g8fU } A v2 08}Y "1L$| G(p`1~xm public static void main(String[] args) Wu[&Wv~ { { g/0x,-Z new TestMethod(); _kU:Z } o<COm9)i } 0K`#>}W#X 点击下载更多相关资料
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