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/* 6SEq 2 **SiteFileFetch.java r#w.yg4EX */ z
q@"qnr package NetFox; 9`Xr7gmQf import java.io.*; DI=?{A import java.net.*; .50ql[En
AtP!.p"j ivvm.7{ public class SiteFileFetch extends Thread { lL*"N|Y v\R-G f`-UC_(; SiteInfoBean siteInfoBean = null; //文件信息Bean |3Bmsd/3 long[] nStartPos; //开始位置 ZdlQ}l#F long[] nEndPos; //结束位置 _f@nUv*
FileSplitterFetch[] fileSplitterFetch; //子线程对象 2Zr,@LC long nFileLength; //文件长度 is`~C boolean bFirst = true; //是否第一次取文件 \vgM`32< boolean bStop = false; //停止标志 4S*dNYc File tmpFile; //文件下载的临时信息 "]B%V!@ DataOutputStream output; //输出到文件的输出流 fz<GPw
@"n]v)[4 //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Svm'ds7> public SiteFileFetch(SiteInfoBean bean) throws IOException !JbWxGN`jn { -_irkpdC[ siteInfoBean = bean; qP72JxT //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); x<=R?4@rq tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); g5t`YcL if(tmpFile.exists ()) .}n\c%& { |9]_<X[ic bFirst = false; Ie/dMB=t read_nPos(); Y``]66\Fp } T]2= else 0xc|Wn> { T=VBKaSbU nStartPos = new long[bean.getNSplitter()]; [#;CBs5o nEndPos = new long[bean.getNSplitter()]; {`V ^V_ } O |*-J t>eeOWk3 Tb!jIe {tUxRX } Xn%O .yM6 N;*
wd< Y,{pG]B$w public void run() FBS]U$1 { GxA[N //获得文件长度 QFIYnxY9 //分割文件 6b\JD.r*{ //实例FileSplitterFetch [n&SA]a //启动FileSplitterFetch线程 :i*
=s}cv //等待子线程返回 m[tsG=XBN try{ SEIJ+u9XsA if(bFirst) w/@ tH { *V{Y.`\ nFileLength = getFileSize(); gq050Bl) if(nFileLength == -1) "8/BVW^bv { -GYJ)f System.err.println("File Length is not known!"); i)7B :uA } #dkSAS else if(nFileLength == -2) FLLfTkXdI { 15M!erT System.err.println("File is not access!"); hSG1f` } +Os9}uKf else t<MO~_`! { 6)_h'v<|M for(int i=0;i<nStartPos.length;i++) NB3ar&.$S { W('V2Z-q nStartPos = (long)(i*(nFileLength/nStartPos.length)); &p5^Cjy L } w6|l ~.$= for(int i=0;i<nEndPos.length-1;i++) Jn"ya^~ { 6Tsi^((Li nEndPos = nStartPos[i+1]; \ %QA)T% } FA1h!Vit nEndPos[nEndPos.length-1] = nFileLength; 9ZI^R/*Kc } 2j=HxE } @Wa, 8p PQ 4f'!,Q ; //启动子线程 YtA<4XHU fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; c6tH'oV for(int i=0;i<nStartPos.length;i++) K/z2.Npn { 8JU{]Z!G<; fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), CB`GiH/j siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), :]9CdkaU nStartPos,nEndPos,i); x57O.WdN Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); S+GW}?! fileSplitterFetch.start(); /hAy1V6 } 3 V$
\s8 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ,e;_
Vb siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); DtkOb,wY // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", hpo*5Va nEndPos = " + nFileLength); lA n^)EL // fileSplitterFetch[nPos.length-1].start(); ;OSEMgB1 TbgIr U+:Mu]97 //等待子线程结束 VMw[M^ //int count = 0; fwv.^kx //是否结束while循环 *|6*jU boolean breakWhile = false; x$.0:jP/s UVgDm&FF S0?e/VWy while(!bStop) \ \g Aa-}: { *.!5327 write_nPos(); o&Y
R\BI/ Utility.sleep(500); 34 I Cn~ breakWhile = true; C5~
+"#B )p[Qj58 n7hjYNJ for(int i=0;i<nStartPos.length;i++) (/A
6kp? { `_(N(dm if(!fileSplitterFetch.bDownOver) gQuU_dbXSB { (8Te{K h' breakWhile = false; Gk!CU"`sP break; pd.5 } bpdluWS+ ) } rN`-ak if(breakWhile) !r4B1fX break; =4K:l}} -gpHg M\r=i>(cu //count++; <=@6UPsn2 //if(count>4) Xw&vi\*m // siteStop(); QsyM[; \j: } $>hH{ ORFi0gFbA jm,:jkr System.err.println("文件下载结束!"); :b<< } tD> qHR catch(Exception e){e.printStackTrace ();} 6o~g3{Ow } dm"|\7 B*n_
VBd ja^ //获得文件长度 6<No_x |_ public long getFileSize() 5E}!TL$ { PKYm{wO- int nFileLength = -1; U%KsD 4B try{ fDwqu.K URL url = new URL(siteInfoBean.getSSiteURL()); | v:fP;zc HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 4Q~++PKBe httpConnection.setRequestProperty("User-Agent","NetFox"); 4v.i!U#
{ +HoCG;C{ bM"d$tl$?' int responseCode=httpConnection.getResponseCode(); ;Ngu(es6 if(responseCode>=400) L<p.2[3 { >z k6{kC processErrorCode(responseCode); A#nSK#wS61 return -2; //-2 represent access is error NUX$)c } QPKY9.Rvv *OHaqe(* u>[hLXuB String sHeader; '[Bok=$B) h&x;#.SYK VF g"AJf for(int i=1;;i++) 3<}r+, j { _A6e|(.ll //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); GW0e=Y=LR //Utility.log(in.readLine()); K'b #}N\ sHeader=httpConnection.getHeaderFieldKey(i); QaSRD/,M if(sHeader!=null) bH.f4-.u>) { fn Pej?f: if(sHeader.equals("Content-Length")) 5wbR}`8 { i?6#>;f nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); #fq&yjl#A break; 6d;RtCENo } '@WS7`@-y } Je=k.pO1 else _p0G8 break; \6vr)1~N> } -8z@FLUK- } W.?EjEx catch(IOException e){e.printStackTrace ();} pW-aX)\DR catch(Exception e){e.printStackTrace ();} ~Q+J1S]Fs @%I-15Jz j0A9;AP;;C Utility.log(nFileLength); CMU\DO j "e]Ui 'nfdOX.d return nFileLength; B } } =A<a9@N}N DVw 04ay% =|IY[2^ //保存下载信息(文件指针位置) 4Vv$bbu+ private void write_nPos() T:S[[#f{5 { R'h.lX try{ b21@iW output = new DataOutputStream(new FileOutputStream(tmpFile)); iV.j!H7o output.writeInt(nStartPos.length); 'J_6SD for(int i=0;i<nStartPos.length;i++) :F
pt>g { ah15,<j // output.writeLong(nPos); 1U8/.x| output.writeLong(fileSplitterFetch.nStartPos); 1a'0cSH output.writeLong(fileSplitterFetch.nEndPos); 2I0Zr;\f } 3W55m@w output.close(); a+P^?N } M`,`2I A catch(IOException e){e.printStackTrace ();} Pk)H(, catch(Exception e){e.printStackTrace ();} 077 wk } YeVkX{y >?r8D48` $uYfy< //读取保存的下载信息(文件指针位置) 0[7tJbN private void read_nPos() !^qpV7./l { lnt}l try{ #BhcW"@ DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); z;PF%F int nCount = input.readInt(); T;{"lp. nStartPos = new long[nCount]; G>S3? jGk nEndPos = new long[nCount]; )\QPUdOvx for(int i=0;i<nStartPos.length;i++) 5k`Df/ { [*d<LAnuWP nStartPos = input.readLong(); P5oYv nEndPos = input.readLong(); ?pkGejcQ } xQ>T.nP}1 input.close(); XW BTBL } UI74RP catch(IOException e){e.printStackTrace ();} U9x6\Iy catch(Exception e){e.printStackTrace ();} ;#ElJXS } R;H>#caJ . 12H/F vec4R )S private void processErrorCode(int nErrorCode) }cERCS\t { !]=S A & System.err.println("Error Code : " + nErrorCode); k;!}nQ& } 6U%F
mE @ +lw*/\7 ETrL3W< //停止文件下载 GUUd(xS{ public void siteStop() N`NW*~ { v6O5n(5,, bStop = true; 'rSJ9Mw"x for(int i=0;i<nStartPos.length;i++) F 8 gw3 fileSplitterFetch.splitterStop(); h:{^&d
a e6_` ]s}9-!{O
} K'S\$ } r<EwtO+x //负责部分文件的抓取 :djbZ>< **FileSplitterFetch.java :;N2hnHoG */ V7$-4%NL package NetFox; c!J|vRA5 ->5[C0: ] f- ~] import java.io.*; k5eTfaxl import java.net.*; -5<G^AS ?T_bjALW }Ih5`$ public class FileSplitterFetch extends Thread { RwDXOdgu MsjC4(Xla. l` ?4O String sURL; //File URL A\QrawBp0l long nStartPos; //File Snippet Start Position M`QK{$1p long nEndPos; //File Snippet End Position ?xb2jZ/0X int nThreadID; //Thread's ID tW"s^r=95 boolean bDownOver = false; //Downing is over @+;
cFj boolean bStop = false; //Stop identical w!
':Ws FileAccessI fileAccessI = null; //File Access interface TZw['o lCJ/@) A4f;ftB public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException gv/yfiA? { RKwuvVI this.sURL = sURL; e/F+Tf this.nStartPos = nStart; zd?uMq;w this.nEndPos = nEnd; )KcY<K nThreadID = id; la89>pF fileAccessI = new FileAccessI(sName,nStartPos);//定位 h3z9}' } *M+ CA_I( A5%cgr% 6 xZ>@wBQ public void run() 0<42\ya { CAbT9Wz& while(nStartPos < nEndPos && !bStop) P B"nf|pm { $QJ,V~ f(.t0{Etq ,Zb_Pu try{ 1JF>0ijU@ URL url = new URL(sURL); %oiA'hz;* HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); SaiYdJ httpConnection.setRequestProperty("User-Agent","NetFox"); s^ K:cz String sProperty = "bytes="+nStartPos+"-"; n-:n.JX httpConnection.setRequestProperty("RANGE",sProperty); mZ4I}_\, Utility.log(sProperty); yvV]|B@sO ?D=t:= )/uCdSDIc InputStream input = httpConnection.getInputStream(); 2[5z6oG //logResponseHead(httpConnection); a'B 5m]% ./Wi(p{F <*5` TE0J byte[] b = new byte[1024]; [OQ+&\ int nRead; 7hfa?Mcz while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) R1C2d +L { bVYsPS nStartPos += fileAccessI.write(b,0,nRead); I8LoXY //if(nThreadID == 1) x}H%NzR // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); m9Hdg^L } <x\I*%( ?CZ*MMV #4ii!ev Utility.log("Thread " + nThreadID + " is over!"); QS2~}{v bDownOver = true; #5mnSky+s //nPos = fileAccessI.write (b,0,nRead); A?Gk8 } Mx=L lC) catch(Exception e){e.printStackTrace ();} ,=y8[(h } UjH+BC+9`b } }7Y@u@R lBfG#\rdW~ J]qx4c //打印回应的头信息 $jL+15^N0+ public void logResponseHead(HttpURLConnection con) ~A-VgBbU>_ { ~+O ws for(int i=1;;i++) x).`nZ1 { _`q ei0 String header=con.getHeaderFieldKey(i); Nj;G%KAP
if(header!=null) `zMR?F` //responseHeaders.put(header,httpConnection.getHeaderField(header)); 3k5F$wf Utility.log(header+" : "+con.getHeaderField(header)); $/;<~Pzi else @4%x7%+[c break; I)}T4OOc/ } i0*6o3h } Nzel^~ i T&Y9 eHHqm^1z public void splitterStop() _:.'\d( { (S
k+nD bStop = true; _-bEnF+/0 } jGKas I` $Y_v X
2 ulxy 4] h } s14; \ XyE%<] qjVhBu7A /* b5d;_-~d **FileAccess.java p_l.a *//文件访问(定位,写) -MT.qhx package NetFox; 3(R]QO`%' import java.io.*; lv0}d Ikj_
0/%F y/yg-\/XF public class FileAccessI implements Serializable{ {B+{2;Zk "ba>.h,#' //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节
Xw{Qktn RandomAccessFile oSavedFile; %[7<GcWl long nPos; WbDD9ZS c;1Xu1 )Qx&m} public FileAccessI() throws IOException X1;ljX { ?&GV~DYxA this("",0); f1}b;JJTsv } #\r5Q> XoqmT/P ?^W`7H F%0 public FileAccessI(String sName,long nPos) throws IOException yZDS>7H { pG9qD2Cf oSavedFile = new RandomAccessFile(sName,"rw"); \,G7nT this.nPos = nPos; #Yr/GNN oSavedFile.seek(nPos); 3rQ;}<*M } k4Ub+F 6qzy eli 6I,4 6 XZ- public synchronized int write(byte[] b,int nStart,int nLen) {[Vkht} { )#_:5^1 int n = -1; W!
q-WU try{ 8.R~Ys* oSavedFile.write(b,nStart,nLen); u+/1ryp n = nLen; sFWH*kdP? } ,I|Tj C5 catch(IOException e) YsXf+_._ { r>gU*bs( e.printStackTrace (); @&LtIN# } %44Z7 WjsE#9D!of A~7q=- return n; 0-a[[hL? } 3a\.s9A" zQhc
V h`:f } I&Y9 li
Hz5<| p^ojhrr /* '}eA2Q>BV **SiteInfoBean.java S((\KL, */ U>jLh57 package NetFox; \:D'u<8E 2or!v^^u lf%Ju$H
public class SiteInfoBean { /6Vn WrN_ pswEIa n.\|NR'v private String sSiteURL; //Site's URL ?g\SF}2 private String sFilePath; //Saved File's Path 7o5~J)qIC private String sFileName; //Saved File's Name x9{&rldC private int nSplitter; //Count of Splited Downloading File (D5.NB%@ _pS!sY~d 7y2-8eL public SiteInfoBean() (<:mCPk(~ {//nSplitter的缺省值为5 k%S;N{Qh@ //default value of nSplitter is 5 K4>nBvZ?v this("","","",5); >4N=P0= } o$FYCz n E5U{.45 )@OKL0t public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 'z.:
e+Q_ { =$t sSiteURL= sURL; :i>/aRNh1 sFilePath = sPath; .*>pD/ sFileName = sName; #(KE9h% this.nSplitter = nSpiltter; ek3,ss3 !tL&Ktoj ehCZhi~ } uk)6% =u^{Jvl[ Sd0y=!Pj= public String getSSiteURL() v%6mH6V { :n t\uwh return sSiteURL; g9$P J: } hy?e?^ kbF+aS NDv_@V(D public void setSSiteURL(String value) )Ap0" ?q { sF=8E8qa sSiteURL = value; D+:} D*_& }
t/HUG#W{ %ymM#5A j%y)%4F8 public String getSFilePath() yA#-}Y|]b { >
l@o\ return sFilePath; wK[Xm'QTPJ } xf?6_= t:h~p-&QB B1C"F-2d public void setSFilePath(String value) $sX X6K), { 82bOiN15 sFilePath = value; `mfN3Q*[c } %G%D[ i] $_P*Bk) pd1V8PZSG public String getSFileName() #g6*s+Gm { VP<_~OLc return sFileName; }N6r/
VtOQ } d^Jf(NE0Yo Xw2tCRzD ,n&e,I public void setSFileName(String value) B-
VhUS { qAF.i^ sFileName = value; 9J!@,Zsh } 5U3b&0 QNzx(IV@ -#ta/*TT: public int getNSplitter() 8eVQnp* { HAi'0%" return nSplitter; C"We>! } Ehv*E 'n)]"G| %O< qw public void setNSplitter(int nCount) [H!8m7i; { zU7/P|Dw+ nSplitter = nCount; b2Jgg&?G } z^q ~|7 } ]5=C3Y #el i_Cxe ?z2k74&M^ /* Rf~? u)h1 **Utility.java
oq>8 */ xqua>!mqS package NetFox; {{\
d5CkX pM^r8kIH zeZ}P>C public class Utility { }8W5m(Zq9n t*&O*T+fgy C6 XZZ public Utility() |Ir&C[QS{y { )^C w laQM*FLg X8Xw' } 5V^+;eO \Q5Jg //线程睡眠 }4; \sY public static void sleep(int nSecond) 7:h8b/9 { : Nf-}" try{ ?1f(@ Thread.sleep(nSecond); NG2@.hP:uU } 2
P=c1; catch(Exception e) "[*W=6m0 { z}" Xt=G? e.printStackTrace (); &mM[q'V } 2[Ja|W\If } km]RrjRp k3/V$*i,1b //日志 z8ox#+l public static void log(String sMsg) GV5hmDzRs { KV!!D{VS`@ System.err.println(sMsg); 5DHFxym' } /kAu&} P7||d@VW, AvN\^
&G public static void log(int sMsg) FE`:1 { jG0o-x=X System.err.println(sMsg); rdFeDZo&Z) } jtMN )TM } Qo!/n`19 wuv2bd )+ %Q}T9%Mtj /* <Q4yN!6 **TestMethod.java -qPYm?$ */ d@:4se-q+ package NetFox; s5s'$|h" Z"# /,?|3@ 6+MZ39xC public class TestMethod { gZFtV H^N@fG<*dh =]OG5b_-Y public TestMethod() !Ol>![ { ///xx/weblogic60b2_win.exe 9K>$ try{ bUW`MH7yJ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); `[.':"~2N //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); Wm5/>Cu, SiteFileFetch fileFetch = new SiteFileFetch(bean); H!D?;X fileFetch.start(); vsjl8L } RaS7IL:e catch(Exception e){e.printStackTrace ();} | 'SqG}h -N')LY l>i<J1 } QsaaA
MGY *E Z'S+wR H$
!78/f public static void main(String[] args) fNVNx~E { .}}w@NO new TestMethod(); FM c9oyU~ } USKa6<:{W } -! dL
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