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/* @FKNB.> **SiteFileFetch.java twU^ewO& */ W}bed],l package NetFox; NARW3\ import java.io.*; y|U3 import java.net.*; Tw"u{%t 9nlfb~F~P 08{0i,Fs public class SiteFileFetch extends Thread { K O "U5v =4uL1[0' *Hy-D</w% SiteInfoBean siteInfoBean = null; //文件信息Bean tM]~^U long[] nStartPos; //开始位置 pb1/HhRR^n long[] nEndPos; //结束位置 TaeN?jc5 FileSplitterFetch[] fileSplitterFetch; //子线程对象 "Q6oPDX( long nFileLength; //文件长度 +uKh]RP boolean bFirst = true; //是否第一次取文件 eWSA boolean bStop = false; //停止标志 "l
vPge File tmpFile; //文件下载的临时信息 ciVN-;vi DataOutputStream output; //输出到文件的输出流 5mUHk]W f4)fa yAVp //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 1X2MhV public SiteFileFetch(SiteInfoBean bean) throws IOException !`L%wS { 0Lmq?D siteInfoBean = bean; .)o<'u@Ri //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); T;qP"KWZ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); /)Bk
r/ if(tmpFile.exists ()) DZ -5A { HtB>#`' bFirst = false; 0]=|3-n read_nPos(); -iWt~ } z^+f3-Z else U|.kAI* { Ahk6{uz nStartPos = new long[bean.getNSplitter()]; Nw[TP
G5 nEndPos = new long[bean.getNSplitter()]; rk:^^r>5Qi } F|3Te?_ yEIM58l YKKZRlQo hRTw8-wy: } w%R(*,r6 B-PN +P2 -/rP0h5# public void run() /]m5HW(P7K { S0\QZ/je //获得文件长度 U8qb2'a8 //分割文件 U;u@\E@2 //实例FileSplitterFetch ~kPHf_B;z //启动FileSplitterFetch线程 ] W39HL //等待子线程返回 TeaP\a try{ xX$'u"dsA if(bFirst) >Q#h,x~vu { Ws ya:9| nFileLength = getFileSize(); {Qbg'|HO=l if(nFileLength == -1) 7{>mm$^|V { 9$ZQuHSw7 System.err.println("File Length is not known!"); 8&<C.nKP } &SuWmtq else if(nFileLength == -2) _Y@vO { W5 ^eCYHoi System.err.println("File is not access!"); r:0F("},
} z5`AJrj% else *Z'*^Y1le { V
.+ mK|) for(int i=0;i<nStartPos.length;i++) 4H'\nsM { x9Um4!/t nStartPos = (long)(i*(nFileLength/nStartPos.length)); l# u$w& } xa#;<8 iV for(int i=0;i<nEndPos.length-1;i++) EYWRTh { y,'M3GGl nEndPos = nStartPos[i+1]; vYb.Ub+ } D*.U? nEndPos[nEndPos.length-1] = nFileLength; 0Cd)w4C } ?e( y/ } K",YAfJa &iR3]FNI :}(Aq;}X //启动子线程 :_9MS0 fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; &$$KC?!w for(int i=0;i<nStartPos.length;i++) (%.[MilxPM { L~9Q7 6w fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 2$ m#)*\ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),
%f3qCN nStartPos,nEndPos,i); ]e`&py E Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); C#<b7iMg fileSplitterFetch.start(); 8Ld{Xg } SQ&nQzL // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), <&JK5$l<X siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); j#4 Iu&YJ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 5B6twn~[ nEndPos = " + nFileLength); \%&BK.t // fileSplitterFetch[nPos.length-1].start(); ybk~ m t<=Ru*p zv[$N, //等待子线程结束 y2Eq-Ie //int count = 0; 96G8B62 //是否结束while循环 n}0n!Pr^ boolean breakWhile = false; VPOzt7: h[eC i C7PVJnY0 while(!bStop) -_@zyF<G { iM
\3~3' write_nPos(); 3XykIj1 Utility.sleep(500); =Q+i(UGHi breakWhile = true; Yf1&"WW4 WXq=FZ- {"kEu for(int i=0;i<nStartPos.length;i++) Y=G9|7*lO { .M(')$\U if(!fileSplitterFetch.bDownOver) >-S? rXO { H(|n,c breakWhile = false; v9*ugu[K9 break; o,qq*}= } c_V^~hq } j8P qc] if(breakWhile) CG#lpAs break; <O<Kf:i&c1 |h^[/ 6ijL+5 //count++; Z%&$_-yJ //if(count>4) sF. oZ> // siteStop(); \NZ(Xk } 5;v_?M!UCK nR%ey" %<dvdIB System.err.println("文件下载结束!"); Fh8 8DDJ } L
i g7Ac, catch(Exception e){e.printStackTrace ();} zv%]j0 ? } ]S gm^j8B 6DkFI kS //获得文件长度 *s JT\J$D[ public long getFileSize() gWk?g^KJL { 0Y>5& int nFileLength = -1; pseN!7+or try{ Fal##6B URL url = new URL(siteInfoBean.getSSiteURL()); EKgY HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); r!+..c httpConnection.setRequestProperty("User-Agent","NetFox"); QT8GP?F C4[) yJ Yamu"# int responseCode=httpConnection.getResponseCode(); X&LaAqlSG if(responseCode>=400) <6.aSOS { 8(3nv[ processErrorCode(responseCode); V><,.p8 return -2; //-2 represent access is error @5RbMf{ } )tvP| :?!b\LJ2^ ?d!*[Ke8 String sHeader; #Vy8<Vy&w !+Fr U'^ Q6 oM$qiM for(int i=1;;i++) z@<OR$/`L { g)Tr# //DataInputStream in = new DataInputStream(httpConnection.getInputStream ());
<(Rbu2_ //Utility.log(in.readLine()); :~^_*: sHeader=httpConnection.getHeaderFieldKey(i); vZiuElxKi if(sHeader!=null) K0aT(Rc
e { mAM:Q*a' if(sHeader.equals("Content-Length")) 5FJ(x:k?z { P.y06^
X}A nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 0:iR=S break; #lfW0?Y' } oBS m>V } p3,m), else [%c5MQ?H break; _|Uv7>}J^ } _j\GA6 } XN^l*Q?3n catch(IOException e){e.printStackTrace ();} \Ota~A catch(Exception e){e.printStackTrace ();} sRI0; ^7Rc\ >d3`\(v- Utility.log(nFileLength); WR"?j9y_q B"Ma<"HU ey]WoUZ return nFileLength; <*Gd0 v% } a$=He ^qY?x7mx1 eH_< <Xh!v //保存下载信息(文件指针位置) XfQK
kol private void write_nPos() J))U YJO { fi~jT"_CI try{ ,W| cyQ output = new DataOutputStream(new FileOutputStream(tmpFile)); $L4h'(s output.writeInt(nStartPos.length); rT|wZz9$@ for(int i=0;i<nStartPos.length;i++) ?CD[jX}! { im3BQIPR // output.writeLong(nPos); 4%$#
output.writeLong(fileSplitterFetch.nStartPos); it$w.v+W7V output.writeLong(fileSplitterFetch.nEndPos); } *jmW P } %a:>3!
+ output.close(); 4aiI&, } tfCK^{ catch(IOException e){e.printStackTrace ();} (PC)R9r5 catch(Exception e){e.printStackTrace ();} 2EH0d6nt } Ya&\ b 6 ffQm"s:P :+_ //读取保存的下载信息(文件指针位置) eakQZ-Q private void read_nPos() r3NdE~OAi { "x0/i?pqa try{ hLr\;Swyp DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); /o^/J~/3 int nCount = input.readInt(); _+9o'<#u( nStartPos = new long[nCount]; m%cwhH_B nEndPos = new long[nCount]; G3o `\4p for(int i=0;i<nStartPos.length;i++) }60/5HNr { 3UX6 Y]E3 nStartPos = input.readLong(); &Nw[J5-"k nEndPos = input.readLong(); +O)Y7k{?C5 } ?="?)t[ input.close(); 0VZC7@ } 4(dgunP catch(IOException e){e.printStackTrace ();} mpNS}n6 catch(Exception e){e.printStackTrace ();} ? _7iL? } &;naaV_2T TT oW>RP# %i.Prckrb private void processErrorCode(int nErrorCode) fZp3g%u { |s,y/svp System.err.println("Error Code : " + nErrorCode); K: |-s4= } h])oo:u'/Q {TZV^gT4 DB+oCE<.# //停止文件下载 bao"iv~z public void siteStop() FeNNzV= { qfX26<q bStop = true; "QvTn= for(int i=0;i<nStartPos.length;i++) N F,<^ u fileSplitterFetch.splitterStop(); CiV^bYi ^ib
=fLu mqtYny' } iS< ^MD } R;zf x/ //负责部分文件的抓取 uO)vGzt3^x **FileSplitterFetch.java 2;K2|G7 */ Jflm-Hhsf package NetFox; J|w%n5Y 8O_yZ
~Z4 Us.k, import java.io.*; Ae%AG@L import java.net.*; _\gCdNrD ]v]tBVO$ "d`u#YmR public class FileSplitterFetch extends Thread {
7&dK_x,a 6!se,SCvw -ykD/ String sURL; //File URL *,zrg%8 long nStartPos; //File Snippet Start Position e{H( long nEndPos; //File Snippet End Position n]6-`fpD int nThreadID; //Thread's ID #-o 'g! boolean bDownOver = false; //Downing is over T!I3. boolean bStop = false; //Stop identical + KaVvf FileAccessI fileAccessI = null; //File Access interface g4y&6!g
I_ AFHrj (*_lLM@Cd public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException LJ K0WWch { ,M~> t7+ this.sURL = sURL; dvM%" k this.nStartPos = nStart; phQ{<wzwp this.nEndPos = nEnd; k?rJGc G nThreadID = id; ]:;dJc' fileAccessI = new FileAccessI(sName,nStartPos);//定位 \XO'7bNu- } &;sW4jnt ~6K.5t7 R9(Yi<CC public void run() Dr76+9'i { JLt%G^W> while(nStartPos < nEndPos && !bStop) E3]
8(P%D- { :5F(,Z_ l"7#(a U~d%5?q try{ 'Z]wh .]T URL url = new URL(sURL); NTEN HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); rHi4Pw{L httpConnection.setRequestProperty("User-Agent","NetFox"); d tE"1nR String sProperty = "bytes="+nStartPos+"-"; NwxDxIIH/) httpConnection.setRequestProperty("RANGE",sProperty); '\GU(j Utility.log(sProperty); 1:r#m- \ _u'y7- Uy.ihh$I- InputStream input = httpConnection.getInputStream(); ^^lx Ot //logResponseHead(httpConnection); ?bpVdm! -:kIIK
J"Fp), byte[] b = new byte[1024]; 7<Qmpcp = int nRead; wFMw&=j while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 4*D"*kR; { /2
hk 9XM nStartPos += fileAccessI.write(b,0,nRead); &po!X ) //if(nThreadID == 1) EqGpo_ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ~ivOSr7s} } gX7R-&[UD )Ay 90Wt .lq83;
k Utility.log("Thread " + nThreadID + " is over!"); &r,)4q+ bDownOver = true; g~$UU(HX //nPos = fileAccessI.write (b,0,nRead); `/?'^A%Ik } =6+99<G|%M catch(Exception e){e.printStackTrace ();} +xgP&nw[- } 3Fxr= } E N CWOj T--%UZD]W ?z <-Ww //打印回应的头信息 JypP[yQ public void logResponseHead(HttpURLConnection con) nt+OaXe5D { 9UVT]acq for(int i=1;;i++) }-J0cV { 1;DRcVyS+ String header=con.getHeaderFieldKey(i); V#b=mp if(header!=null) @OGG]0
J //responseHeaders.put(header,httpConnection.getHeaderField(header)); fUGappb Utility.log(header+" : "+con.getHeaderField(header)); Zxhbnl6 else q3#+G:nh break; (Q @'fb9z } 9zS } 7(oA(l1V `R>z{-@= KQvSeH>r public void splitterStop() ~**x_ v { .Zj`_5C bStop = true; C\aHr! } vf$IF| ji
./m8( G~v:@ } ~;a\S3 HsUh5; #r]Z2Y] /* .)_2AoT7[ **FileAccess.java ~#jiX6<I *//文件访问(定位,写) 7Xu# |k package NetFox; zA8@'`Id import java.io.*; wpN3-D d6ef)mw Lt=32SvTn public class FileAccessI implements Serializable{ 1Y J?Y biU_ImJ>0 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 |Tc4a4 jS RandomAccessFile oSavedFile; zL9~gJ long nPos; $+_1F` fK+
5 pjX= :K| public FileAccessI() throws IOException Eu:/U*j { C}pm>(F~ this("",0); <R;wa@a> } _^NaP 6%ofS8[ $Seh4 public FileAccessI(String sName,long nPos) throws IOException @+H0D" {
l
EzN oSavedFile = new RandomAccessFile(sName,"rw"); T'vI@i9 this.nPos = nPos; c9fz x oSavedFile.seek(nPos); VXWV Pj# } ` =P_ed%&' R:YVmqd FZ?eX`, public synchronized int write(byte[] b,int nStart,int nLen) Zfcf?&>< { Xd5s8C/} int n = -1; o2U5irU try{ <j>;5!4!} oSavedFile.write(b,nStart,nLen); )\EIXTZY= n = nLen; Ec}%!p_$ } $/D?Vw:] catch(IOException e) NytTyk) { T|wz%P<J e.printStackTrace (); h!K"
;qw } G^#>HE| <{Y3}Q ]6[+tpx return n; 3CjixXaA$ } aG^E^^Y v9-4yZU^WR
IPK1g3Z } 7~XA92 vm_]X{80; W/xPVmnV /* S-q"'5> **SiteInfoBean.java t#|R"Q# */ CvE^t#Bok package NetFox; *c[w9(fU 8| =C/k (w)%2vZ^ public class SiteInfoBean { yzp# r8:"\%"f> !zF07.(E private String sSiteURL; //Site's URL 5l1R")0`t_ private String sFilePath; //Saved File's Path 7<!x:G?C private String sFileName; //Saved File's Name f^B'BioW( private int nSplitter; //Count of Splited Downloading File 4Ii5V
c '(3 QyCD P@ew' JL% public SiteInfoBean() 8`urkEI^r {//nSplitter的缺省值为5 ub-e! { //default value of nSplitter is 5 FEu"b@v this("","","",5); SfC* ZM}< } ||QK)$" %p )"_q!ge cMZy~> public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 2SC-c `9) { M.t,o\xl sSiteURL= sURL; U|tacO5w` sFilePath = sPath; Od~uYOL/B sFileName = sName; */aQ+%>jf this.nSplitter = nSpiltter; $&Vba@v ZH;4e<gg TS9<uRO0 } (LmU\ Pe% cYK:Y!|`F L<@*6QH public String getSSiteURL()
5)'Y\~2 { ajk}&`Wj" return sSiteURL; C0N}B1-MU } O[t?*m1/ GkI'. XdCP!iq*8 public void setSSiteURL(String value) E#:!&{O { = EFh*sp sSiteURL = value; /Tm+&Jd } 2A~o)7JaZ \]f+{d-& j AOy3c public String getSFilePath() dv\bkDF4A { gR# k' return sFilePath; M9R'ONYAa } Eqz|eS*6 (JlPe)Q5 ]VKQm(,0 public void setSFilePath(String value) eZ(ThA*2=t { Gm:s;w-;v sFilePath = value; %6uZb sa
} 4vWiOcJF!O PB$beQ !;,\HvEZYw public String getSFileName() -#9et30 { =YgH-{ return sFileName; 9h\RXVk{tA } +S0aA Wal _|I8+(~) ["Ts7;q9[ public void setSFileName(String value) {Z8GG { 2H.g!( Oza sFileName = value; /}~=)QHH } 7yyX8p> Rkg8 NJsaTBT public int getNSplitter() U&BCd$ { KLW5Ad:/rI return nSplitter; T(x@gwc } L5x;#\#p x6R M)rr E8r6P:5d` public void setNSplitter(int nCount) N
Nk { "NA<^2W@J nSplitter = nCount; XyN
" Jr } $+GDPYm' } jdJTOT 8b'@_s!_ UU>+ b: /* P*iC#w]m **Utility.java bI:W4y>I= */ 5e,u*J] package NetFox; |3e+ K. l%_K$$C K:'^f? P public class Utility { 85G-`T <<?32r~ ?ld&}|W~ public Utility() 6ScB:8M { } uS0N$4 N!~]D[D b_nE4> } :5CyR3P o-H?q! //线程睡眠 v%T'!(0j/ public static void sleep(int nSecond) a r8iuwfZ { gyAJ#N| try{ [G$ #jUt/O Thread.sleep(nSecond); 5xdeuBEY8 } 4t(/F` catch(Exception e) hH5~T5?\ { f}2}Ta e.printStackTrace (); Z
C01MDIY } _*e_?]G- } r c[~S 9qCE{[( //日志 m_0y ]RfG public static void log(String sMsg) .8s-)I { f#:3TJV System.err.println(sMsg); %f&Y= } YOLzCnI4 uT,i& ,V!"4T,Z public static void log(int sMsg) i,ZEUdd*_ { 2k<#e2 System.err.println(sMsg); 8_4!Ar>2 } e%)iDt\j } _x(hlHFk 082iEG dVB#Np /* *KDTBd **TestMethod.java hJ ^+asr */ b]z_2h~` package NetFox; 1Zc=QJw@ 03 gbcNo FhY#3-jH public class TestMethod { R&(OWF;~, WcqR; Nm EQlb:;j public TestMethod() \54B { ///xx/weblogic60b2_win.exe &Iy5@8 try{ 9pnOAM} SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); %Ve@DF8G //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 5n2!Y\ SiteFileFetch fileFetch = new SiteFileFetch(bean); C lf;+G0 fileFetch.start(); &6OY^6< } af |mk@ catch(Exception e){e.printStackTrace ();} 6k;5T L>IP!.J]? w;ZT-Fti } <}[ !k< *:TwO=) QD!NV* public static void main(String[] args) c6vJ;iz { C8|Ls(4Ck new TestMethod(); k@lJ8(i^qU } ?:9y
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