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/* $]IX11.m **SiteFileFetch.java pPt7M'uL" */ %n-:mSus package NetFox; ]-d:wEj import java.io.*; ?N2/;u> import java.net.*; %~ uMa n82N@z<8] + yX\!H" public class SiteFileFetch extends Thread { fHTqLYd- KI~BjP\e QAYhAOS|e SiteInfoBean siteInfoBean = null; //文件信息Bean '@)47]~ long[] nStartPos; //开始位置 <11pk long[] nEndPos; //结束位置 gqR?hZD FileSplitterFetch[] fileSplitterFetch; //子线程对象 M>hHTa?W long nFileLength; //文件长度 ,7:_M>-3g boolean bFirst = true; //是否第一次取文件 =Nn&$h l boolean bStop = false; //停止标志 t(69gF\" File tmpFile; //文件下载的临时信息 Fm(~Vt;%u DataOutputStream output; //输出到文件的输出流 (R)\
PZZTRgVc //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ?0_Bs4O\ public SiteFileFetch(SiteInfoBean bean) throws IOException /fCj;8T3o { B{'x2I#, siteInfoBean = bean; 5y07@x //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); g_?:G$1H tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); @+LkGrDP if(tmpFile.exists ()) >[TB8 { RD_IGV bFirst = false; B9IqX read_nPos(); E6(OEC%, } 16"eyt> else ]Igd< { *sI`+4h[ nStartPos = new long[bean.getNSplitter()]; :7ej6 nEndPos = new long[bean.getNSplitter()]; "YbvI@pD } eekp&H$'s .a._WZF N yT|=`; RUHQ]@d#T } @T53%v<5 b~?FV>gl m1DzUq; public void run() :A%|'HxH3 { vJ96qX //获得文件长度 |0 #J=am //分割文件 iHy=92/Ww //实例FileSplitterFetch rbl EyCR //启动FileSplitterFetch线程 KLpu7D5(| //等待子线程返回 =fmM=@!$< try{ ]$ [J_f*x if(bFirst) UN{_f)E? { ;O=tSEe nFileLength = getFileSize(); p9]008C89 if(nFileLength == -1) %Od?(m"& { )G$/II9d System.err.println("File Length is not known!"); n"YY:Gm;8 } 9-)D"ZhLe else if(nFileLength == -2) ]k~k6#),; { <4,hrx&. System.err.println("File is not access!"); ,4$ZB(\ }
9?c0cwP? else r )8[LN- { t,$4J6 for(int i=0;i<nStartPos.length;i++) vt0XCUnK { .nCF`5T! nStartPos = (long)(i*(nFileLength/nStartPos.length)); 7\*_/[B } J6Uo+0S for(int i=0;i<nEndPos.length-1;i++) *,g|I8?%VD { rUjK1A{V nEndPos = nStartPos[i+1]; ]i'hCa $$ } Hts.G~~8 nEndPos[nEndPos.length-1] = nFileLength; rlSar$ } JR/:XYS+ } K=x>%6W7b |^jl^oW #"{wm //启动子线程 N)Fy#6 fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; wi'CBfr'z for(int i=0;i<nStartPos.length;i++) ,Bh!|H(?L1 { "~~Js~ fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), JWhi*je siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), TR:V7d nStartPos,nEndPos,i); df_hmkyj Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); X
yi[z
tN fileSplitterFetch.start(); PCzC8~t } 7b7~D +b // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), N"d
M+ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 5Vo8z8]t` // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 8,\toT7 nEndPos = " + nFileLength); hM~9p{O // fileSplitterFetch[nPos.length-1].start(); 2pR+2p` `I|$U)' (V2~txMh //等待子线程结束 K=|x"6\ //int count = 0; &NbhQY`k //是否结束while循环 GSzb boolean breakWhile = false; 7:7i}`O bup)cX^ Db"jzMW. while(!bStop) _;baZ- { yVQ0;h write_nPos(); IC&>PwXb Utility.sleep(500); (>O'^W\3p breakWhile = true; P|,@En 1! 'Fi\Qk'D@ +&?#Gdb for(int i=0;i<nStartPos.length;i++) ?.1yNO*s { #-S%aeB if(!fileSplitterFetch.bDownOver) wLn,x;;< { M*M,Z breakWhile = false; ykFm$ 0m+I break; ]PWK^-4P } )kLTyx2& } K
q;X(&Z if(breakWhile) v@_}R_pX break; D@9adwQb )+;Xfftz z ((Y \vP //count++; ;S
Re` //if(count>4) (+SfDL$m // siteStop(); e}%~S9\UL5 } #{-l(016y *E$& $07;gpZt System.err.println("文件下载结束!"); HRX}r$ } X>}-UHKV+ catch(Exception e){e.printStackTrace ();} {4B{~Qe; } CUIFKM +<#0V!DM Zy!^HS$ //获得文件长度 \0gU)tVZ public long getFileSize() zx:Qz { u-v/`F2wN int nFileLength = -1; L1P.@hJ try{ n*twuB/P 1 URL url = new URL(siteInfoBean.getSSiteURL()); )1#J4 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); R@ksYC3 F httpConnection.setRequestProperty("User-Agent","NetFox"); WC2sRv4]3 D^]g`V*N p'SclH[ int responseCode=httpConnection.getResponseCode(); p7H0|> if(responseCode>=400) | ]#PF* { IIj
:\?r processErrorCode(responseCode); 6"@`iY return -2; //-2 represent access is error jL^3/0"o } e,J
q<=j "d1~(0=6<m Cp!bsasj String sHeader; e`]x?t<U4/ k*xMe- d v8q&_
for(int i=1;;i++) 2'> { JDbRv'F:( //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); P*=M?:Jb, //Utility.log(in.readLine()); 2%!yV~Z sHeader=httpConnection.getHeaderFieldKey(i); r.WQ6h/eZ5 if(sHeader!=null) &k\`!T1 { Y)V)g9 if(sHeader.equals("Content-Length")) w|t}.u { MS7rD%(,' nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); t4Q&^AC break; Veeuw } [2*?b/q3J } _+B{n^ { else l$1
] break; E@.daUoB } 9E`Laf } O0`o0!=P catch(IOException e){e.printStackTrace ();} <m"fzT<" catch(Exception e){e.printStackTrace ();} zDD H6o_*Y }BFX7X Utility.log(nFileLength); 7+'&(^c zCz"[9k gUa-6@ return nFileLength; bd'io O } ZovF]jf k g"}j 9-ei#|Vnt[ //保存下载信息(文件指针位置) c_~tCKAZ private void write_nPos() nO#a|~-)) { |K.J@zW try{ NCX`-SLv output = new DataOutputStream(new FileOutputStream(tmpFile)); x->H~/ output.writeInt(nStartPos.length); i>j(Ds v for(int i=0;i<nStartPos.length;i++) `f)X!S2l { xR~9|H9a // output.writeLong(nPos); ^55q~DP}> output.writeLong(fileSplitterFetch.nStartPos); lZ'ZL* output.writeLong(fileSplitterFetch.nEndPos); >~}}*yp } I+GP`=\ output.close(); :|&S7&l] } o;[cApiQ,2 catch(IOException e){e.printStackTrace ();} qk}Mb_*C) catch(Exception e){e.printStackTrace ();} MkK6.qV\z
} prw% )#, HrK7qLw7 +~n"@ / //读取保存的下载信息(文件指针位置) /ka "YU private void read_nPos() q.:j
yj6 { vp|.x |@ try{ uY;7&Lw
y1 DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); )u?^w int nCount = input.readInt(); Xs Ey8V nStartPos = new long[nCount]; J]ri|a nEndPos = new long[nCount]; =WEWs4V5A for(int i=0;i<nStartPos.length;i++) WF_24Mw { P;bOtT -- nStartPos = input.readLong(); wl Nl|+ K nEndPos = input.readLong(); .VA'W16 } KN<KZM input.close(); tq.g4X ;_ } :"Gd;~p. catch(IOException e){e.printStackTrace ();} Sp-M:,H3H catch(Exception e){e.printStackTrace ();} U6IvN@
g } [M#I Nm} SO+J5,)HA JWsOze8# private void processErrorCode(int nErrorCode) ALi3JU { undH{w= System.err.println("Error Code : " + nErrorCode); u`gY/]y! } N"Cd{3 h[& \OD,P cnL@j_mb //停止文件下载 g0M/Sv public void siteStop() V8947h|& { Tqm)- |[ bStop = true; zwgO|Qg; for(int i=0;i<nStartPos.length;i++) [pzo[0G 'v fileSplitterFetch.splitterStop(); \=
G8 mQ=nU oTb4 T= } |>dqZ_)v } ^K?Mq1"Db //负责部分文件的抓取 9RQw6rL **FileSplitterFetch.java JQ<9~J */ V\/5H~L package NetFox; bnxR)b~ t}fU 2Yb qwvch^?>FQ import java.io.*; en8l:INX import java.net.*; AkX8v66:
NGAjajB 3h4'DQ.g public class FileSplitterFetch extends Thread { >mp"=Y ]cP$aixd G]E-2 _t7 String sURL; //File URL MB"<^ZX long nStartPos; //File Snippet Start Position /rzZU} 3[ long nEndPos; //File Snippet End Position @YI-@ int nThreadID; //Thread's ID +<7a$/L?4 boolean bDownOver = false; //Downing is over lQt* LWd[ boolean bStop = false; //Stop identical (R^Ca7F FileAccessI fileAccessI = null; //File Access interface a3B^RbDP&8 m ol|E={si 9 UcSQ"D public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException #TD0)C/ { WXX08" this.sURL = sURL; *6QmYq6c< this.nStartPos = nStart; U,tWLX$@ this.nEndPos = nEnd; dL|*#e nThreadID = id; !A#(bC fileAccessI = new FileAccessI(sName,nStartPos);//定位 jB0ED0)wX } t4FaU7 A>Xt 5vk+ >OW>^%\!1 public void run() `cpUl*Y= { l>?k>NEpP while(nStartPos < nEndPos && !bStop) (a@}J.lL { #2Z\K>L (6~~e$j $|H7fn(r try{ L<O"36R URL url = new URL(sURL); $?dutbE HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); KO&oT#S httpConnection.setRequestProperty("User-Agent","NetFox"); ]V.0%Ccw;. String sProperty = "bytes="+nStartPos+"-"; DS>qth httpConnection.setRequestProperty("RANGE",sProperty); XFrgnnt Utility.log(sProperty); M|\C@,F]8 |s{[<; |C3~Q{A InputStream input = httpConnection.getInputStream(); {on+
;, //logResponseHead(httpConnection); >o8N@`@VK- 8\9s,W:5 t.6gyrV7>< byte[] b = new byte[1024]; N-<m/RS int nRead; +I_p\/J?w/ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) S#f}mb0, { 8L,i}hIo. nStartPos += fileAccessI.write(b,0,nRead); YN($rAkL //if(nThreadID == 1) 9/4Bx!~A // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos);
FA#8 } Cl'3I%$8K )+v'@]r {,
zg Utility.log("Thread " + nThreadID + " is over!"); ;&U! g& bDownOver = true; 1`l10f qU //nPos = fileAccessI.write (b,0,nRead); WoX,F1 o } ~JSa]6:_+ catch(Exception e){e.printStackTrace ();} 1xt N3{c } ZY{zFg9 } r^$WX@ t& '(&,i/O Ilv
_. //打印回应的头信息 _5SA(0D#9 public void logResponseHead(HttpURLConnection con) "%fvA; { =d`/BDD for(int i=1;;i++) ui4*vjd
{ qFg"!w String header=con.getHeaderFieldKey(i); YDdY'd`* if(header!=null) e=w.7DSE //responseHeaders.put(header,httpConnection.getHeaderField(header)); H/BU2s a Utility.log(header+" : "+con.getHeaderField(header)); b8TwV_&|X else dT4e[4l break; ZX03FJL7u } EE[JXoke } \<4Hp_2? fk iJem9XXb public void splitterStop() oar`xH$C { =EdLffU[J bStop = true; v
%GcNjZk5 } /8tF7Mmr `Wy8g?d;bn 6<+ 8[o } kr6^6I. H_+F~P5RC 84UI)nE:Q /* ?~s2 3%E **FileAccess.java _M9-n *//文件访问(定位,写) 7l|D!`BS package NetFox; Lyj0$wbH` import java.io.*; Ri&?uCCM _$YT*o@0J Y~ ( <H e? public class FileAccessI implements Serializable{ #Hy fjj 2*9rhOK* //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 ( R0>0f@ RandomAccessFile oSavedFile; sPUn"7 long nPos; cri.kr9Y s
u)AIvF{ k| Ye[GM* public FileAccessI() throws IOException hY-;Vh0J { N>'|fNx] this("",0); LAfv1 } T{Rhn V1 "f-z3kL 6pi^ rpo public FileAccessI(String sName,long nPos) throws IOException Z2wgfP` { f0,,<ib.w oSavedFile = new RandomAccessFile(sName,"rw"); dJYQdo^X this.nPos = nPos; ~Q/G_^U: oSavedFile.seek(nPos); KW5u.phv } Z_Z; g]|! T6=q[LpsKN % HK \ public synchronized int write(byte[] b,int nStart,int nLen) {Y#$ { rS/}!|uAu int n = -1; >:yU bo) try{ hJcN*2\: oSavedFile.write(b,nStart,nLen); x&PVsXdt5m n = nLen; ,@*Srrw } uY'77,G_J catch(IOException e) i9%cpPrg8 { fR6.:7& e.printStackTrace (); %juR6zB%8 } F4%vEn\! 5v@-.p jaq`A'o5 return n; K=`;D } bPHqZ*f Z 71.* +bv-! rf } 4fp]z9Y GDUOUl& bRzw.(k0`r /* \L@DDK|"`6 **SiteInfoBean.java a1nj}1M% */ S66..sa package NetFox; {~RS$ | b\^q9fy s wIJmA public class SiteInfoBean { `[*n UdG Yo$
xz fqcFfz6?x private String sSiteURL; //Site's URL ]sf1+3 private String sFilePath; //Saved File's Path aHvsgp] private String sFileName; //Saved File's Name 3.^Tm+ C private int nSplitter; //Count of Splited Downloading File ~-.^eT kP +~~&FO2 m2o)/: public SiteInfoBean() |`50Tf\J {//nSplitter的缺省值为5 @&G< Np` //default value of nSplitter is 5 ZC\&n4~7 this("","","",5); [c=T)]E1 } n6f @h&crI[c ?UPZ49y public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) KNw{\Pz~w { @Ht7^rz+S sSiteURL= sURL; ub* j&L=
sFilePath = sPath; X\a*q]"_ sFileName = sName; c+^#(OB this.nSplitter = nSpiltter; Pfv| K;3i ^bjaa =oPc\VYW } IV5B5Q'D
=]auP{AlE |dxcEjcY_ public String getSSiteURL() 1 ynjDin< { T1&^IO-F7$ return sSiteURL; 3Wl,T5}{ } ]$VYzE2e j.FW*iX1C ?tJyQT public void setSSiteURL(String value) 2W_p)8t>b { DG!H8^
sSiteURL = value; S|pMX87R } \~:Uj~ AUk,sCxd ;GgW&*| public String getSFilePath() =QiVcw,G# { )t-Jc+*A> return sFilePath; wf=
s-C } m<DiYxK y
;$8C WjrUns public void setSFilePath(String value)
69o,T`B { ~baVS-v sFilePath = value; mimJ_=]DC } BV8-\R@ ?1G7=R 79?%g=#= public String getSFileName() lhk[U!># { .|pyloL. return sFileName; u6,NQ^4 } I,:R~^qJ8v @DYxDap{ EPZ^I) public void setSFileName(String value) FccT@,.F { .[E"Kb}= sFileName = value; D]s8w } x'.OLXx> z`^DQ8+\j z DP public int getNSplitter() .)zX<~, { Wx i|(} return nSplitter; 4K(AXk } sU/R$Nbr 7HpfHqJ7 H</Mh*Fl2G public void setNSplitter(int nCount) 99\;jz7 { ?ep'R&NV nSplitter = nCount; F>0[v|LG }
UA{tmIC\ } U%7| iK ~_z"So'|F_ nJvDk h#h1 /* Jf/X3\0N7 **Utility.java mv,<#<-W */ "K"]/3`k- package NetFox; t~luBUF %4%$NdU" [^cflmV public class Utility { 4rmSo^vK Gl1Qbd0 7.r}98V public Utility() ]$StbBP { cPemrNxydN ;}tEU'& v[aFSXGj) } Zewx*Y| wQ 7G_kVp //线程睡眠 J<
E"ZoY public static void sleep(int nSecond) oPX `/X# { AF=9KWqf
try{ 3N'f Hy Thread.sleep(nSecond); 2f%G`4/p } 6%p$C
oR catch(Exception e) )]=1W
{ FAS+*GFz e.printStackTrace (); =9lrPQ]w } 1;\A./FVv } a^vXwY #!m`A+!~! //日志 8fn7! public static void log(String sMsg) PjH[8:,
{ PFqc_!Pm System.err.println(sMsg); "w)Y0Qq*z } N(%%bHi#V ii.L]#3y DA/l`Pn public static void log(int sMsg) "!9hcv-; { QW5S=7 System.err.println(sMsg); t3#My2 = } Z$0+jpG_s } woH B![Q, ,_JhvPWR,) V-y"@0%1 /* },"T,t# **TestMethod.java ndSM*Fq */ JJ50(h)U package NetFox; ]%{.zl! x2#5"/~4 arCi$:-z@ public class TestMethod { 8sDbvVh1F 23lLoyN x}g5 public TestMethod() B@:c8}2. { ///xx/weblogic60b2_win.exe +0w~Skd, try{ a?zn>tx SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); >q'xW=Y
j\ //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 3f u*{8.XZ SiteFileFetch fileFetch = new SiteFileFetch(bean); ^J?ExMu fileFetch.start(); hmA$gR_ } +<G |Ru- catch(Exception e){e.printStackTrace ();} p19[qy~. @>wD`<U| j|`6[93MG } @R5jUPUVV kWF/SsE *^BW[C/CTR public static void main(String[] args) 6m.ChlO/ { B! `Dj,_ new TestMethod(); P87!+pB( } h>'9-j6B } |WopsV
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