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/* s"?3]P **SiteFileFetch.java 6S\8$ */ &iVs0R package NetFox; ^zgo#J5O import java.io.*; Xb,3Dvf import java.net.*; 4ss4kp_> BL58] P84 dAe')N:KPI public class SiteFileFetch extends Thread { n?K @ur+;IK$ T9q-,w/j; SiteInfoBean siteInfoBean = null; //文件信息Bean aFIw=c(nP long[] nStartPos; //开始位置 W`*r>`krVJ long[] nEndPos; //结束位置 &]-DqK7 FileSplitterFetch[] fileSplitterFetch; //子线程对象 *4_Bd=5(U long nFileLength; //文件长度 s(roJbJ_; boolean bFirst = true; //是否第一次取文件 S`?!G&[!> boolean bStop = false; //停止标志 9Lfv^V0 File tmpFile; //文件下载的临时信息 8e"gW >f DataOutputStream output; //输出到文件的输出流 /vb`H>P G<;*SYAb //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) xi;`ecqS< public SiteFileFetch(SiteInfoBean bean) throws IOException ymcLFRu, { eQvg7aO; siteInfoBean = bean; gbagi+8s`% //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ~.lPEA %% tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); xA[mm if(tmpFile.exists ()) Q.c\/& { ROZF)|l bFirst = false; @!d{bQd, read_nPos(); *G9V'9 } @gXx1hEg else b*Q&CL { r-/`"j{O! nStartPos = new long[bean.getNSplitter()]; 5.J.RE"M nEndPos = new long[bean.getNSplitter()]; ]:/Q]n^ } mUx+Y ]Ep $a ` G SOvF[,+ njA#@fU } *EwR!L* Yk Qd
1]/.` ]1 public void run() g95`.V} { @2v_pJy^ //获得文件长度 2gVm9gAHUd //分割文件 2SR: FUV/ //实例FileSplitterFetch d4z/5Oa //启动FileSplitterFetch线程 Hl
|z</*+ //等待子线程返回 3%=~)7cF try{ zT?D<XW>1 if(bFirst) DrK{}uM { y Fq&8 x<X nFileLength = getFileSize(); WvZ8/T'x if(nFileLength == -1) -!]ZMi9 { ^@NU}S):yN System.err.println("File Length is not known!"); D*|Bb? } `&6dnSC},P else if(nFileLength == -2) K8Y=S12Ti { uOdl*| T? System.err.println("File is not access!"); c<$OA=n } EI^C{$Y else G[q$QB+ { `%WU8Yv for(int i=0;i<nStartPos.length;i++) cD'V>[h { fw{gx nStartPos = (long)(i*(nFileLength/nStartPos.length)); Q6I:"2u1 } n#_$\
p>Yd for(int i=0;i<nEndPos.length-1;i++) nwCrZW { &W6^sj*k5U nEndPos = nStartPos[i+1]; e6RPIg } ]
{HI?V nEndPos[nEndPos.length-1] = nFileLength; !0mI;~q| F } $z*'fXg } lQkQ9##* ~zNAbaC+>t XAL1|]S //启动子线程 iTU5l5U z fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; fkNbS for(int i=0;i<nStartPos.length;i++) e'D&8z_; { @/-\k*T fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ,{?%m6.lE siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), }Y36C.@H nStartPos,nEndPos,i); [87,s.MK Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); %;YHt=(1*X fileSplitterFetch.start(); NGO fb } 8StgsM // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), =
6\ ^% siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 3"KCh\\b // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", xAMW-eF?d nEndPos = " + nFileLength); _MX>#!l // fileSplitterFetch[nPos.length-1].start(); 2WxQ(:d= x0w4)Ic5 j9+w#G]hV //等待子线程结束 161xAig //int count = 0; >]5P
3\AQV //是否结束while循环 W#WV fr boolean breakWhile = false; Sa;qW3dt3E _X"N1,0 **gXvTqI while(!bStop) o"R7,N0rB { LW_f write_nPos(); ut/=R !(K Utility.sleep(500); H-f X(9 breakWhile = true; m#Z#
.j_2 !9P';p}2 m<"WDU?y; for(int i=0;i<nStartPos.length;i++) PQ$%H>{ { ?|B&M\}g if(!fileSplitterFetch.bDownOver) {
W{]L: { ptxbDzOz breakWhile = false; e|WJQd4+S break; yT9@!]^L } \<TXS)w] } &t:Gx<] if(breakWhile) qfRH5)k break; ILShd)]Rw 56-dD5{hxR !.(P~j][ //count++; .rqhi //if(count>4) 6 EC* // siteStop(); @;?p&.W`D } oij}'|/Jc ly_HWuFJ3 c?&X?< System.err.println("文件下载结束!"); e 5*hE } b:]V`uF? catch(Exception e){e.printStackTrace ();} >!bJslWA } FOy|F-j 8=uu8-l8g x$Oq0d{T //获得文件长度 kH7(@Pa public long getFileSize() 3e;^/kf<9 { ]B3=lc" int nFileLength = -1; Vi]W |bP try{ kbMWGB%; URL url = new URL(siteInfoBean.getSSiteURL()); OO*zhGD;[ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); d,Yw5$i httpConnection.setRequestProperty("User-Agent","NetFox"); P&ptJtNg RM]M@%,K B
s#hr3h- int responseCode=httpConnection.getResponseCode(); .|b$NM if(responseCode>=400) K<ft2anY5 { Ne{?:h.! processErrorCode(responseCode); '2nhv,|.U return -2; //-2 represent access is error *XbEiMJ } ]<rkxgMW> oO|KEY( 0C
irfcs}Z String sHeader; 6vNrBB %Iv,@}kvT+ KZ
;k)O.Ov for(int i=1;;i++) ,J^b0@S { "h a L //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); dj7hx"BI //Utility.log(in.readLine()); 6GSI"M6s sHeader=httpConnection.getHeaderFieldKey(i); LzXmb 7A if(sHeader!=null) %9N7Ln|% { i}mVQ\j5 if(sHeader.equals("Content-Length")) RcM/!,B { 2Mvrey) nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); :f}9($ break; ,<tX%n`v= } n;+LH9 } Hmd]
FC,_ else fW3(&@ break; ,3p~w5C/+[ } 6S*exw } >
BY&,4r catch(IOException e){e.printStackTrace ();} ()Y4v catch(Exception e){e.printStackTrace ();} ]?+p5;{y4 y 4I6 L>9V&\ Utility.log(nFileLength); w?wG(+X7 aM2l2 E2@65b$ return nFileLength; Ax?y } v7jq@#- D!NQ~'.a=2 I^UC&5dC //保存下载信息(文件指针位置) o-{[|/)Tk private void write_nPos() , 5kKimTt { E^lvbLh' try{ ?_$=l1vf output = new DataOutputStream(new FileOutputStream(tmpFile)); ;8*`{F[ output.writeInt(nStartPos.length); q<[_T for(int i=0;i<nStartPos.length;i++) FsV'Cu@!U { WD2]&g // output.writeLong(nPos); pP?MWe
Eg output.writeLong(fileSplitterFetch.nStartPos); cc&axc7I output.writeLong(fileSplitterFetch.nEndPos); Xg
SxN!I } v'qG26 output.close(); Co9QW/'i } hMUs"
<. catch(IOException e){e.printStackTrace ();} GCX G/k?w: catch(Exception e){e.printStackTrace ();} E4W -hq~ } 2FF4W54I 8:>1F, OjF_ %5 //读取保存的下载信息(文件指针位置) u7[ykyV private void read_nPos() 9:,\gw>F { |e?64%l5P try{ 3'qJ/*]9 DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); -/cZeQDPb int nCount = input.readInt(); ##;Er47@^ nStartPos = new long[nCount]; 65p?Igb nEndPos = new long[nCount]; #H{<gjs] for(int i=0;i<nStartPos.length;i++) (
Qcp{q { ~ !
3I2 nStartPos = input.readLong(); "
'6;/N nEndPos = input.readLong(); qT"Q1xU[ } Bck7\ input.close(); \"^w'ng } 4%}*&nsI-Z catch(IOException e){e.printStackTrace ();} mc_ch$r! catch(Exception e){e.printStackTrace ();} Ph}|dGb } kc @[9eV ;A'Z4=*~ 2
:mn</z private void processErrorCode(int nErrorCode) I8<,U!$ { O.Iu6D System.err.println("Error Code : " + nErrorCode); PSVc+s[Q+V } `v}%33$hA 8J~1-; !Mim@!5M //停止文件下载 &f^l^K5: public void siteStop() [y)`k@ { 1Q4}'0U4 bStop = true; $Y_i4( for(int i=0;i<nStartPos.length;i++) 1jPJw3"3h fileSplitterFetch.splitterStop(); &S]@Ot<z F;[T#N:~ 7.@TK& } %]6~Eq%s } @@rEs40 //负责部分文件的抓取 ,0~9dS **FileSplitterFetch.java :l&V]}:7* */ <Ib[82PU package NetFox; vab@-=%k tBT<EV{ G AfP'EP0m import java.io.*; 2aB^WY'tC import java.net.*; $:j G- r \,&co $w0lrh[+ public class FileSplitterFetch extends Thread { WN5`;{\ Ck@J,~x1D H_Kj7(=&> String sURL; //File URL wTGbd long nStartPos; //File Snippet Start Position *B\H-lp? long nEndPos; //File Snippet End Position VY"9?2?/ int nThreadID; //Thread's ID Ra/Ukv_ v boolean bDownOver = false; //Downing is over RJH, boolean bStop = false; //Stop identical .8uz 6~ FileAccessI fileAccessI = null; //File Access interface bY2 C]r(n xD /9F18 ?N=m<fn public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Cb@3M"1: { 1q3(
@D5~+ this.sURL = sURL; R:AA,^Z this.nStartPos = nStart; *" 98L+ this.nEndPos = nEnd; >,gvb5 nThreadID = id; =rQP[ICs! fileAccessI = new FileAccessI(sName,nStartPos);//定位 7Wa?$6d } {
"xln/ o|iYd
n\ zrv#Xa!O\ public void run() d90Z,nex { st& while(nStartPos < nEndPos && !bStop) k@D0 {z { 8W+gl=C~ d:q + TLf9>=
OVh try{ !W'Ui
9uX URL url = new URL(sURL); ai^4'{#zi HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); [;.`,/ httpConnection.setRequestProperty("User-Agent","NetFox"); N+)?$[ String sProperty = "bytes="+nStartPos+"-"; (ihP`k-. httpConnection.setRequestProperty("RANGE",sProperty); X$\i{p9jw Utility.log(sProperty); Dbaf0 ow;R$5G *P!e:Tm) InputStream input = httpConnection.getInputStream(); 3!o4)yJWx //logResponseHead(httpConnection); $RwB_F oi&Wo'DX &Q=ZwC7# byte[] b = new byte[1024]; omf Rs int nRead; cZ+7.oDu while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) yag}fQ(XH { GOB(#vu nStartPos += fileAccessI.write(b,0,nRead); 4Kv[e]10( //if(nThreadID == 1) F;!2(sPS // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); '[(nmx'yVJ } Q2%QLM:., \#x}q'BC4 @l(vYJ:f Utility.log("Thread " + nThreadID + " is over!"); %_aMl bDownOver = true; ixh47M //nPos = fileAccessI.write (b,0,nRead); QIn/,Yd } /<3<.
~ catch(Exception e){e.printStackTrace ();} |m?vVLq } _0 snAt^iC } sK=}E= Pe~`16f 9kY[j2,+ //打印回应的头信息 8?Y[' public void logResponseHead(HttpURLConnection con) ])#\_'fg { UU}7U]9u for(int i=1;;i++) &Rz,
J] { I#FF*@oeM String header=con.getHeaderFieldKey(i); |\uYv|sT if(header!=null) dYojm1MQ //responseHeaders.put(header,httpConnection.getHeaderField(header)); D~&Mwsi Utility.log(header+" : "+con.getHeaderField(header)); }GnwY97 else qJT0Y/l:( break; 7TX,T|>9 } w.+Eyu_I\ } 7yiJ1K<bIt -#A:`/22 c;I, O public void splitterStop() +MO E { tllBCuAe bStop = true; I/COqU7~ } 9;r? nZT/ g42R 'E% |AH@ EI> } 22KI]$D#f jV7&Y.$zF] >n7["7HHk /* z]$j7 dp **FileAccess.java vh>{_
# *//文件访问(定位,写) DcV<y-`'1 package NetFox; fjDpwb:x) import java.io.*; /k"hH\Pp K{}4zuZ "t&{yBQ0u public class FileAccessI implements Serializable{ /k7wwZiY@ dNVv4{S //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 JAn1{<Ky RandomAccessFile oSavedFile; C'9 1d7E long nPos; LEc8NQs bEr.nF s5Fr)q// ! public FileAccessI() throws IOException FyEDt@J { %N~CvN@T this("",0); R~B0+ :6 } udT xNl! 6|;0ax4:P `f ' C[a" public FileAccessI(String sName,long nPos) throws IOException fEu9Jk { +>3]%i-\ oSavedFile = new RandomAccessFile(sName,"rw"); 5&4F,v[zp this.nPos = nPos; yCM{M oSavedFile.seek(nPos); <~%t$: } cq^sq1A: Z[,`"}}hv= Yn[x #DS public synchronized int write(byte[] b,int nStart,int nLen) 4IGxI7~27# { B {i&~k int n = -1; '}O!2W&Y]% try{ 2uo8j F.h oSavedFile.write(b,nStart,nLen); YbvX$/zGu n = nLen; 5|WOBOh>`& } [w%#<5h catch(IOException e) W:ixzpQ { pa]
TeH e.printStackTrace (); -v*x V;[ } \FI^Vk ^~I @
spR4 X"J%R/f return n; _XN~@5elrC } s}b*5@8|tA G(i\'#5+ ._BB+G } H*qD: N Fi{mr*} T^.{9F]*S /* ag/u8 **SiteInfoBean.java WB"$u2{|i */ 'o8\`\'H! package NetFox; Gt.*_E |7S:l9; F9D"kG;Dk public class SiteInfoBean { xhD$e=
g w})NmaT;YF `hF;$ private String sSiteURL; //Site's URL g Np-f private String sFilePath; //Saved File's Path \R;K>c7= private String sFileName; //Saved File's Name @5*xw1B private int nSplitter; //Count of Splited Downloading File uk{J@&F 3&'R1~Vh ks^|> public SiteInfoBean() 9_`3IJ {//nSplitter的缺省值为5 |x[$3R1@ //default value of nSplitter is 5 NFM-)Z57 this("","","",5); Pb=rFas*C } [b pwg&Oo 0kz7 >v f8F1~q public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) "x.88,T6 { ?ZM^%]/+ sSiteURL= sURL; Kk56/(_S sFilePath = sPath; kBUufV~ sFileName = sName; [EcV\. this.nSplitter = nSpiltter; I]UA0[8X Suj}MEiv )muv;Rf`e5 } nvwDx*[qN |7Yvq%E 7vdHR\#;$ public String getSSiteURL() T7X!#j"\ { hG[4O3jo\ return sSiteURL; FL~9< / } )uuwwz xP{m9_Qj KXDz'9_ public void setSSiteURL(String value) JiUT\y { dnLo(<{<U sSiteURL = value; DD)mN)
&T } IFkvv1S` ?RqTbT@~ aq$62>[ public String getSFilePath() lP-kZA! { gx&\Kw6HM return sFilePath; FW5*_%J } P|yGx)'^P )OS>9
kFH {m>~` public void setSFilePath(String value) CrT2#h 1# { /6 A:J]Q_ sFilePath = value; CD$u=E
] } p}cd}@cQ6 DPR;$yV `8qT['`#R public String getSFileName() |A2W8b
{] { =t~+63) return sFileName; Kn3YI9 } $&c<T4 $d #xD&z^o Jq=X!mTd. public void setSFileName(String value) A;b=E[iv { `,hW;p>- sFileName = value; ~k"eEV
p } {.0X[uAf &T5fH!?4 JsHxQ0Tw public int getNSplitter() {IF}d*: { [w+yQ7P return nSplitter;
&
bp#1KR) } ~pDRF( m1M;'tT@ u-]vK public void setNSplitter(int nCount) 8T!fGzHx { $4#=#aKW. nSplitter = nCount; <yPq;#z(! } - I1cAt } 5e~ j Ac*B[ywA3 ^\Ue7,H- /* 3Qm
t]q **Utility.java q!ulE{ ^ */ ir( -$*J package NetFox; mgJ]@s}9 {66Q" H"I c%6 @ z public class Utility { BWqik_ %B*<BgJ;4F gdkLPZ<< public Utility() ySPlyhGF { WOe{mwhhj 24.7S LXO <s59OdzP } fwar8
i1 C.Wms}XA //线程睡眠 i`ZHjW~` public static void sleep(int nSecond) ?[NTw./'7A { QI
:/,w try{ mfp`Iy"}+ Thread.sleep(nSecond); M+;!]tbc3 } BIHHRCe:@n catch(Exception e) 0k .# { tDuUAI54 e.printStackTrace (); TA-(_jm } 7><*
9iOW } Ot4; ,UZ P_^|KEz //日志
8E.5k@ public static void log(String sMsg) o0-fUCmC { |P[D2R} System.err.println(sMsg); =%#$HQ= } b'Piymx w;h\Y+Myyk eaZ)1od public static void log(int sMsg) 1z$}*` { Jte:l:yjtA System.err.println(sMsg); hBY h90] } {XVf|zM, } !m/Dd0 L2V
$%*6 \8@[bpI@g /* :n%sU*'T **TestMethod.java !_/8!95 */ VE S4x%r= package NetFox; ;29X vhS8 <EM LiiNY v#YS`];B public class TestMethod { q[,R%6&' `'WY'\|C 6jy n,GU public TestMethod() +ke42Jwt { ///xx/weblogic60b2_win.exe lDX&v$ try{ lLwQridFXh SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); <=GzK:4L //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); `sp'Cl! SiteFileFetch fileFetch = new SiteFileFetch(bean); J9KLO= fileFetch.start(); :QhEu%e } D*2p catch(Exception e){e.printStackTrace ();} dxhjPS~^Q ]&tr\-3 uD*s^ } v%PWr5] }rAN2D]"} i!+3uHWu`) public static void main(String[] args) (A<sFw? { Qd)cFL"v new TestMethod(); HBf8!\0|/ } `] dx% } \5pAG
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