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/* e;=G|E **SiteFileFetch.java g(:y_EpmLH */ (WW,]#^
package NetFox; "gCSbMq(Vq import java.io.*; #oYX0wvl import java.net.*; VmTk4?V4 |jV4]7Luq dBG]J18 public class SiteFileFetch extends Thread { 'Ph4(Yg X/1Z9a+W <EI'N0~KG SiteInfoBean siteInfoBean = null; //文件信息Bean T
T0O % long[] nStartPos; //开始位置 IEzZ$9,A5 long[] nEndPos; //结束位置 v]*W*; FileSplitterFetch[] fileSplitterFetch; //子线程对象 uF T\a= long nFileLength; //文件长度 %a/O7s 6 boolean bFirst = true; //是否第一次取文件
e?G*q)l boolean bStop = false; //停止标志 1ezQzc2-R File tmpFile; //文件下载的临时信息 [,5clR=F DataOutputStream output; //输出到文件的输出流 -X4`,0y%{O GX_Lxc_<f //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) q<JI!n1O public SiteFileFetch(SiteInfoBean bean) throws IOException y|KDh'Y { ^d"tymDd siteInfoBean = bean; #%e`OA(b //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); a~ REFy tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); [jumq1 if(tmpFile.exists ()) B>47Ic { CSU> nIE0 bFirst = false; $zCUQthL@ read_nPos(); $)@zlnU } HIhoYSwB else >[xQUf,p { I{cn ,,8 nStartPos = new long[bean.getNSplitter()]; S0=BfkHi. nEndPos = new long[bean.getNSplitter()]; *OF7{^~& } 4r(rWlM ]Ly)%a32 'd?8OV PfrW,R~r } JsPuxu_ kd\G> .yWdlq## public void run() Fr%KO)s2 { udc9$uO //获得文件长度 `%ymg8^ //分割文件 0/K NXz //实例FileSplitterFetch &U
'Ds! //启动FileSplitterFetch线程 !#iP)"O //等待子线程返回 hGus!p"lw try{ )kUq2-r if(bFirst) ?qK:P { 3!$rp- !<) nFileLength = getFileSize(); 5WZLB = if(nFileLength == -1) 9DtSYd/ { E$G"R= System.err.println("File Length is not known!"); cRg$~rYd } nj9hRiLn else if(nFileLength == -2) ZRxB" a' { i&LbSxUh9 System.err.println("File is not access!"); r?V|9B`$p } 7SqsVq`[~ else +vbNZqwz { ;8b f5 for(int i=0;i<nStartPos.length;i++) n6uobo- { L:^'cl}
G nStartPos = (long)(i*(nFileLength/nStartPos.length)); Vk_L*lcN } (~#PzE: for(int i=0;i<nEndPos.length-1;i++) L,kF] { sU}e78m h nEndPos = nStartPos[i+1]; Z=H
fOC } i([A8C_A nEndPos[nEndPos.length-1] = nFileLength; Ns9g>~ } MoFZ } |]]fcJOBP
xjX5 PQu \dc`}}Lc //启动子线程 j/Kw-h ,5" fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; l/I W"A for(int i=0;i<nStartPos.length;i++) iCEX|Tj; { n+i}>3'A fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), FP\[7?ZLn siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ?QMs< nStartPos,nEndPos,i); A=3U4L Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); @LmUCP~ fileSplitterFetch.start(); QTyl=z7 }
:D/R // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), #e0+;kBh siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); <St`"H // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", (HJ60Hj nEndPos = " + nFileLength); Yp;x // fileSplitterFetch[nPos.length-1].start(); Sn+Yi JL$RBr O,;SA //等待子线程结束 M>^IQ //int count = 0; ;}PL/L$L6; //是否结束while循环 N,1wfOE boolean breakWhile = false; TUUBC% PQs9@]w[ 2KX *x_- while(!bStop) }$UFc1He\J { P6?Q;-\q0 write_nPos(); w7W-=\Hvh Utility.sleep(500); b13>>'BMB breakWhile = true; #*`|}_6L 8_LDS :H87x?e[ for(int i=0;i<nStartPos.length;i++) := 8vy { @GV^B'}* if(!fileSplitterFetch.bDownOver) 1hN!
2Y: { Yk5kC0B breakWhile = false; lV1|\~?4 break; MWuVV=rd8a } 0'<S7?~| } $pKS['J0 if(breakWhile) _96&P7 break; JSL 3.J &0"`\~lA (+@.L7>m+t //count++; )Qc$UI8L //if(count>4) #-`lLI:w0 // siteStop(); cZ(XY} } "&ks83 -/</7I v7R&9kU{ System.err.println("文件下载结束!"); ^Ve^}|qPc } (1o^Dn3 catch(Exception e){e.printStackTrace ();} <vrx8Q*6 } Em7q@ 8?$2;uGL jL8zH //获得文件长度 /IC'R"V a public long getFileSize() j{PX ~/ { :8ZxO wwv int nFileLength = -1; Y `{U45 try{ ^/+sl-6/F URL url = new URL(siteInfoBean.getSSiteURL()); g[$B90 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); `#]\Wnp~y httpConnection.setRequestProperty("User-Agent","NetFox"); fS~.K9 1m0':n Vdu f.= E. % int responseCode=httpConnection.getResponseCode(); (X9V-4 if(responseCode>=400) 40<&0nn { u%pief processErrorCode(responseCode); {
nV zN( return -2; //-2 represent access is error >&VL2xLy } %L/=heBBd (pmo[2kg 6~}H3rvO} String sHeader; EDo
( |h7v}Y H07j& for(int i=1;;i++) |}`5<a!6U { 5c"kLq6r //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); E;qwoTmul //Utility.log(in.readLine()); 1bBK1Uw sHeader=httpConnection.getHeaderFieldKey(i); JvDsr0]\# if(sHeader!=null) WdT|xf.Q& { _(hwU>. if(sHeader.equals("Content-Length")) vf2K2\fn { l;.BlHyu nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); /K^cU;E, break; (Y>MsqwWfC } xR:h^S^W ~ } ueR42J%s else .bE,Q9: break; zgqw*)C~ } ZYA(Bg^ } +RkYW*|$S catch(IOException e){e.printStackTrace ();} tX251S catch(Exception e){e.printStackTrace ();} @>Keu\) x}{VHp`|ld h,x] Utility.log(nFileLength); fDd!Mt <IVz mzpL yShHFlO= return nFileLength; (5> ibe } sYXS#;|M e@OA> lQ/XJw //保存下载信息(文件指针位置) 'T[zh#v>S private void write_nPos() kgz{m;R { ]lUu%<-; try{ ZhsZywM output = new DataOutputStream(new FileOutputStream(tmpFile)); qN@a<row&~ output.writeInt(nStartPos.length); D@^ZpN8r for(int i=0;i<nStartPos.length;i++) 9HX+sB
M { ;X(n3F // output.writeLong(nPos); GcR`{ 3hO output.writeLong(fileSplitterFetch.nStartPos); .jp]S4~ output.writeLong(fileSplitterFetch.nEndPos); D.(G 9H } yUO|3ONT output.close(); 7g)3\C } er0D5f R catch(IOException e){e.printStackTrace ();} BuTIJb+Q\ catch(Exception e){e.printStackTrace ();} 86#mmm) } ozC!q)j hli10p$ |lxy< C4V //读取保存的下载信息(文件指针位置) ?Z>.G{Wm@ private void read_nPos() "Vq]|j,B/c { K;[%S try{ W(h8!} DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); }4SSo)Uv/ int nCount = input.readInt(); jJZsBOW[8 nStartPos = new long[nCount]; JtpY][}"~3 nEndPos = new long[nCount]; N@6OQ:,[F for(int i=0;i<nStartPos.length;i++) N?;o_^C { </gp3WQ. nStartPos = input.readLong(); SDHc[66' nEndPos = input.readLong(); {X<4wxeTo } )7GLS\uf<% input.close(); p &>A5 } 5xDN&su catch(IOException e){e.printStackTrace ();} HhmVV"g catch(Exception e){e.printStackTrace ();} PgLS\_B } kQVDC,d 2BDan^:-Av k0_$M{@Y private void processErrorCode(int nErrorCode) qQOD { _1<'"u#6w System.err.println("Error Code : " + nErrorCode); ,|X+/|gm } 3g[j%`k p*`SGX ^Opy6Bqb //停止文件下载 GrR0RwnH)? public void siteStop() tx5T^K7[ { oNB,.: bStop = true; ?[VpN2* for(int i=0;i<nStartPos.length;i++) e j%;%`C- fileSplitterFetch.splitterStop(); !?o$-+a| ^YR|WK Y UIOEkQ\Wl } R
pI<]1 } ncattp //负责部分文件的抓取 /%YiZ# **FileSplitterFetch.java E0eQ9BXh */ ]1d,O^S package NetFox; ^8NLe9~p3? HCG@#W<wc B>Cs&}Y! import java.io.*;
xs'kO= import java.net.*; O R<"LTCL 4su_;+] s`=/fvf. public class FileSplitterFetch extends Thread { 'B (eMnLg LuP?$~z hiRR+`L% String sURL; //File URL cZr G:\A long nStartPos; //File Snippet Start Position hyb +#R long nEndPos; //File Snippet End Position Q"|kW[Sg int nThreadID; //Thread's ID ("E!Jyc! boolean bDownOver = false; //Downing is over ~sU?"V boolean bStop = false; //Stop identical l>D-Aan FileAccessI fileAccessI = null; //File Access interface qX{X4b$ ?#m<\]S< AL]h|)6QpC public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException pSQCT { yYToiW * this.sURL = sURL; n<?SZ^X{,/ this.nStartPos = nStart; R+E_#lP_$ this.nEndPos = nEnd; DVl[t8K! nThreadID = id; W&e'3gk _ fileAccessI = new FileAccessI(sName,nStartPos);//定位 "65||[=8 } *:9 >W$0u >H}jR[H' Ty3CBR{6 public void run() .3a:n\tY { .6#cDrK while(nStartPos < nEndPos && !bStop) ],\sRQbv& { IAP/G5'Q hu P ^2*c &^&$!Xmu9 try{ eb!s'@ URL url = new URL(sURL); DhLr^Z!h3; HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection ();
l*K I httpConnection.setRequestProperty("User-Agent","NetFox"); O
xT}I String sProperty = "bytes="+nStartPos+"-"; mN\%fJ7 httpConnection.setRequestProperty("RANGE",sProperty); U['JFLF Utility.log(sProperty); T2DF'f3A j?\$G.Y >'aG/( InputStream input = httpConnection.getInputStream(); d$fvg8^ //logResponseHead(httpConnection); X<~k =qwA 7-".!M 6[*;M byte[] b = new byte[1024]; SqXy;S@ int nRead; %'L].+$t while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) |Bx||=z` { eQU-&-wt0 nStartPos += fileAccessI.write(b,0,nRead); .!yWF?T8 //if(nThreadID == 1) 1mHwYT+ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ]6{(Hjt } qGnPnQc &so-O90 -RG8<bI, Utility.log("Thread " + nThreadID + " is over!"); g.I(WJX0 bDownOver = true; -ca7x`yo //nPos = fileAccessI.write (b,0,nRead); .[T'yc:= } %n05Jitl catch(Exception e){e.printStackTrace ();} @up&q } }_{y|NW } 5/B#) gm D:wnO|: +`;+RDKY* //打印回应的头信息 0A#*4ap public void logResponseHead(HttpURLConnection con) &
u$(NbK { vG ]GQ# for(int i=1;;i++) 6FL?4>MZ
{ _urG_~q String header=con.getHeaderFieldKey(i); c ]>DI&$;J if(header!=null) 6OL41g' //responseHeaders.put(header,httpConnection.getHeaderField(header)); lSH ZV
Fd Utility.log(header+" : "+con.getHeaderField(header)); XkPv*%Er8 else EKZA5J7kn break; |',M_
e] } m`hGDp3 } -#LjI. CO-Iar /8xH$n&xoC public void splitterStop() N'I(P9@ { ?gLR<d_ bStop = true; 1ZT^)/ G } ,*/Pg52? !|:RcH[ $hh+0hs } 8h2D+1,PZC OmB
TA=E< ,H>W:O /* XZ.7c{B< **FileAccess.java wJ6_I$> *//文件访问(定位,写) :qxm !P package NetFox; RX:R*{]- import java.io.*; kMM'[w `9/0J-7* 0|g[o:;fl_ public class FileAccessI implements Serializable{ WtIMvk >Q;
g0\I_ //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 O?CdAnhQc` RandomAccessFile oSavedFile; d]U`?A, long nPos; ~?gzq~~t Te# ]Cn| PPEq6} public FileAccessI() throws IOException >-!r9"8@ { +A@m9 this("",0); <mL%P`Jj
} C
8N%X2R C1b*v&1{ z.
'Fv7 public FileAccessI(String sName,long nPos) throws IOException $; ?c?n+ { %NNj9Bl<VV oSavedFile = new RandomAccessFile(sName,"rw"); DKX/W+#a this.nPos = nPos; W3)\co oSavedFile.seek(nPos); 7%e1cI } 6
jmrD yE#g5V& 4sTMgBzw public synchronized int write(byte[] b,int nStart,int nLen) !x>,N%~ { 69>/@< int n = -1; ymYBm:" try{ :$Q`>k7A oSavedFile.write(b,nStart,nLen); 1Pm4.C) n = nLen; eH
%Ja[ } GWhE8EDT catch(IOException e) ?=<~^Lk {
JnY$fs*" e.printStackTrace (); FQ`(b3.
} }`9jH:q-Z ?ty>}.c t >z(wf>2J return n; yNBv-oe5 } <:">mV+/ e!GZSk
YxXqI } 9UV9h_.x U9
#w =-w;zx /* EkjgNEXq **SiteInfoBean.java V43TO */ SrF x_n package NetFox; |d[5l^6 dN< ,%}R $E\^v^LW public class SiteInfoBean { >TY6O.] R::zuv 'S*k_vuN private String sSiteURL; //Site's URL wjrG7*_Y4v private String sFilePath; //Saved File's Path M%I@<~wl private String sFileName; //Saved File's Name 7\Co`J>p2 private int nSplitter; //Count of Splited Downloading File ,[* ;UR *$S#o#5 ^ *0'\/N& public SiteInfoBean() <`)iA-Df;9 {//nSplitter的缺省值为5 L_Q S0_1 //default value of nSplitter is 5 (!3;X"l this("","","",5); Hkege5{ } ##cnFQCB &dr@6-xaq i)MEK#{ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) {]^O:i" { /,2rjJ#b sSiteURL= sURL; ;'0=T0\ sFilePath = sPath; D/CIA8h3 sFileName = sName; X%4Kj[I^ this.nSplitter = nSpiltter; [*Uu#9 ~W-cGb3c 5!(?m~jJ } ^`XCT .XS9,/S I-DXb
M public String getSSiteURL() \F{:5,Du) { :5b0np! return sSiteURL; WF[bO7: } F'FP0t!S O6X"RsI} 2: SO_O4C public void setSSiteURL(String value) v+xB7w { '#.#$8l sSiteURL = value; "g0(I8 } 0
ipN8Pg+ PyBD hr/o<#OW public String getSFilePath() r|eZv<6 { @kxel`,$e return sFilePath; IeP
WOpj3 } u5+|Su *2e!M^K< }r%X`i| public void setSFilePath(String value) O"Q7Rx { sOpep sFilePath = value; <%P2qgz5 } D+RiM~LH8 y(iY h&;t.Gdf public String getSFileName() nB5zNyY4 { kXrlSaIc return sFileName; KOhA) } fuMJdAuY7d Pw[g 2VoKr) public void setSFileName(String value) _>yoX { Uz
dc sFileName = value; aG%,cQ 1 } 'e!J06 ;
)Eo7?]- Qdf=XG5 public int getNSplitter() S1S;F9F { A/}W&bnluD return nSplitter; yZkyC'/ } S/tIwG
~e3 Ig6T g ? \ck+GW4& public void setNSplitter(int nCount) (Pbg[AY { t#i,1aHA nSplitter = nCount; n6<V+G)T } SUM4Di7 } #oni:] E!m <RNJ>>0 T~:|!` /* 4\M.6])_ **Utility.java EYX$pz(x; */ rXfy!rD_P_ package NetFox; p-SJ6Gg
9 ]#2Y e7+ alq%H}FF public class Utility { vVl; | m P'^%TE kwpK1R4zs public Utility() BV#78,8( { [*:6oo98' Pr ]Ka U}k9 Py } E&$yuW^z Yz$3;
//线程睡眠 $%R$G`.KM public static void sleep(int nSecond) &<RpWA k{ { ~m^ #FJu try{ 26vp1 Thread.sleep(nSecond); {gbn/{ } L;Z0`mdz catch(Exception e) :Bu2,EL*O { d5 7i)= e.printStackTrace (); <FI-zca } ma'FRt } '6y}ZE[ MY#
//日志 B=8Iu5m public static void log(String sMsg) GVHV =E { Xce0~\_A System.err.println(sMsg); >K9#3
4hP } 4;`oUt'. V'*~L\;pU !`41q=r public static void log(int sMsg) l>*"mh { y\dEk:\) System.err.println(sMsg); %\|'%/"`2( } :0& X^]\ } B/~%h | ~vlype3/EF yeDsJ/L /* W"^wnGa@a **TestMethod.java a<}#HfC;' */ g<{xC_J package NetFox; Mi'8
~J 26T "XW'_ 5%sE]Y# public class TestMethod { 2MZCw^s> {:@tQdM:i8 w2_bd7Wp< public TestMethod() >h0-; { ///xx/weblogic60b2_win.exe M9zfT!- try{ {pM?5"MMJ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); hW!)w //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); V,rq0xW SiteFileFetch fileFetch = new SiteFileFetch(bean); 3gd&i fileFetch.start(); oy<WsbnS } a:QDBS2Llv catch(Exception e){e.printStackTrace ();}
Uf}\p~; C4TE-OM8 s(X;Eha } P(F+f`T |$5[(6T| #9K-7je;j public static void main(String[] args) ")=X4]D { P#=`2a#G new TestMethod(); 8 r_>t2$ } Aq3}Ng } 5^^XQ?" 点击下载更多相关资料
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