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/* H!6&'=c {k **SiteFileFetch.java wc"~8Ah */ }j2t8B^&: package NetFox; D;+Y0B import java.io.*; w
T_l>u import java.net.*; 42-T&7k f(!cz,y^\* p-rQ'e public class SiteFileFetch extends Thread { [C~N#S[] ",,.xLI7 Q^l!cL| { SiteInfoBean siteInfoBean = null; //文件信息Bean `022gHYv long[] nStartPos; //开始位置 _,UYbD\[J} long[] nEndPos; //结束位置 +ek6}f# FileSplitterFetch[] fileSplitterFetch; //子线程对象 [)I
W9E
v long nFileLength; //文件长度 FB>P39u boolean bFirst = true; //是否第一次取文件 cd=H4:<T5 boolean bStop = false; //停止标志 p?P.BU\CR File tmpFile; //文件下载的临时信息 m6xbO DataOutputStream output; //输出到文件的输出流 M\IdQY-c ';D>Z?l //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) l^}5PHLd public SiteFileFetch(SiteInfoBean bean) throws IOException K>XZrt { J#iuF'%Ds siteInfoBean = bean; wq1s#ag< //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); `w@z
Fc!" tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); p}wysVB if(tmpFile.exists ()) X(DP=C}v9 { Tkp"mT
v?< bFirst = false; 4mX]JH`UTe read_nPos(); L5 Ai } wGIRRM !b else hg'eSU$J { 6!*zgA5M' nStartPos = new long[bean.getNSplitter()];
z{V#_( nEndPos = new long[bean.getNSplitter()]; J\'f5)k } bS55/M w ^U,C])n fmUrwI1 % ^r7KEeVD } 29|nt1Z L/vw7XNrX gS] public void run() 7M?Sndp$ { Ip8:~Fl] //获得文件长度 rQpQqBu //分割文件 s]D1s%Mx //实例FileSplitterFetch k6\&[BQs //启动FileSplitterFetch线程 =<ht@-1 //等待子线程返回 6G_{N.{( try{ )M7~RN if(bFirst) bp}]'NA { 3u;0,:X& nFileLength = getFileSize(); z38Pi if(nFileLength == -1) rvb@4-i>iI { |H5$VSw System.err.println("File Length is not known!"); oj,;9{- } Fa #5a'}I else if(nFileLength == -2) $lUz!mjG { vrvi]
Y8 System.err.println("File is not access!"); a5w E{K } ,E+\SBQS_ else dXU6TCjU7 { AD6 b for(int i=0;i<nStartPos.length;i++) &oFgZ . { !D/W6Ic@ nStartPos = (long)(i*(nFileLength/nStartPos.length)); 9'ky2
]w } _skE\7&>X for(int i=0;i<nEndPos.length-1;i++) -Gm}i8; { f67pvyy - nEndPos = nStartPos[i+1]; ~ntDzF } 4v#s!W nEndPos[nEndPos.length-1] = nFileLength; J*^ i=y } pp
>F)A0v } $?pfst~;O ykGA.wo7/P dzV2; //启动子线程 @%^h|g8>Fu fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; "|PX5 for(int i=0;i<nStartPos.length;i++) ~C?)-
]bF { KHeeB `V>J fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Enp;-wG:- siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), OY!WEP$F-C nStartPos,nEndPos,i); tC7 4= Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ;iUO1t)^ fileSplitterFetch.start(); #X?E#^6?E } /d$kz&aIV // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), N4WX} siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); A 0;ng2& // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", e_1L J nEndPos = " + nFileLength); xi)M8\K // fileSplitterFetch[nPos.length-1].start(); 1XHE:0!dQ ?|n @%' vOtILL6 //等待子线程结束 Nfmr5MU_ //int count = 0; TEC#owz //是否结束while循环 un)PW&~E boolean breakWhile = false; UGoB7TEfn h6;zAM} P|;f>*^Y while(!bStop) J d,9<m$ { shVEAT'` write_nPos(); 5`::#[ Utility.sleep(500); }=u#,nDl>$ breakWhile = true; D28>e q$}gQ9'z' *nV"X0& for(int i=0;i<nStartPos.length;i++) OM@z5UP { o9OCgP`Y if(!fileSplitterFetch.bDownOver) NezE]'} { MK!Aq^Jz breakWhile = false; mCQ:<# break; ~/2OK!M } NpS =_QeNw } IPt
!gSp if(breakWhile) (Hs,Tj break; 'GLpSWL+* 6Z@T
/"mU( \[wbJ //count++; hXD/ //if(count>4) 6E_YUk?KW // siteStop(); =(v'8?-- } 65rf=*kz: TW1#'G_# X*hPE=2`
p System.err.println("文件下载结束!"); s Dsq:z } nrbP3sf* catch(Exception e){e.printStackTrace ();} d$n<^~Z } Z!l]v.S RE08\gNIt dl3}\o_ //获得文件长度 C)%qs] public long getFileSize() s&\krW& { Qm*X Wo int nFileLength = -1; fC$@m_-KD try{ ]q&NO(:kbq URL url = new URL(siteInfoBean.getSSiteURL()); y
QGd<( HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 5>~D3?IAd httpConnection.setRequestProperty("User-Agent","NetFox"); wv Mp~ F|8;Sw b5 6Q]JY,+ int responseCode=httpConnection.getResponseCode(); $|AasT5w if(responseCode>=400) -_Kw3x { 8wn{W_5a processErrorCode(responseCode); XaMsIyhI return -2; //-2 represent access is error SUjo%3R } (?"z!dg c 4AKPS&k; <@Y`RqV + String sHeader; eAG)+b vD(:?M + 7wMM#z for(int i=1;;i++) p+b$jKWQ { Q2*
~9QkU //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); SEH[6W3 //Utility.log(in.readLine()); @3$ I sHeader=httpConnection.getHeaderFieldKey(i); Z=Cw7E if(sHeader!=null) *rbgDaQ { j Neb*dPoK if(sHeader.equals("Content-Length")) ?3a=u< { V)`A,7X nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); P{9wJ< break; ,|A6l?iV } ?@Q0;LG } <T;V9(66 else $${3I4 break; dQ~GE}[ } cvo+{u$s } K F_Uu catch(IOException e){e.printStackTrace ();} x;`Gn_ catch(Exception e){e.printStackTrace ();} )+|wrK:*v S>r}3,]S (X-(
WMsqQ Utility.log(nFileLength); ]f?r@U'AS| ;Z`a[\i': jMCd`Q]K return nFileLength; q,<l3r In } 6rj iZ% xf/K+ .AOc$Nt //保存下载信息(文件指针位置) s,f2[6\ Y private void write_nPos() ,9}JPv4Z { pdER#7Tq try{ Fx}v.A5 output = new DataOutputStream(new FileOutputStream(tmpFile)); 3 !8#wn output.writeInt(nStartPos.length); f0Q! lMv for(int i=0;i<nStartPos.length;i++) AZE%fOG<i { )Ute // output.writeLong(nPos); >~Gy+- output.writeLong(fileSplitterFetch.nStartPos); ;?@Rq"* output.writeLong(fileSplitterFetch.nEndPos); Mpyza%zj } !/tV}.* output.close(); yUD@oOVC0 } YgjW%q catch(IOException e){e.printStackTrace ();} 7Ok-T10 catch(Exception e){e.printStackTrace ();} 0TA8#c } ky]^N) $[ S 33Q tmoCy0qWz //读取保存的下载信息(文件指针位置) m1jEky( private void read_nPos() 7Hv6>z#m { 2bLc57j{`9 try{ [%R?^*] DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); re/u3\S int nCount = input.readInt(); f4*(rX nStartPos = new long[nCount]; @(oY.PeS<z nEndPos = new long[nCount]; Q:7P
/ for(int i=0;i<nStartPos.length;i++) <*z'sUh+} { A^6z.MdYZ nStartPos = input.readLong(); wBg?-ji3< nEndPos = input.readLong(); {d'B._#i } 88X]Uw(+ input.close(); =WI3#<vDG } D</?|;J#/ catch(IOException e){e.printStackTrace ();} :Zkjtr.\ catch(Exception e){e.printStackTrace ();} UJDI[`2 } @
U"Ib Z:,\FB_U \Gk}Fer private void processErrorCode(int nErrorCode) k$m'ebrS.~ { M E]7e^ System.err.println("Error Code : " + nErrorCode); ;`c:Law4 } :|S[i(' E$4H;SN \ B8T5?bl //停止文件下载 w5s&Ws public void siteStop() w5)KWeGa { L\"wz scn bStop = true; zVtTv-DU for(int i=0;i<nStartPos.length;i++) EZ/_uj2&SN fileSplitterFetch.splitterStop(); 4clCZ@\K^ mZ? jpnd PWvT C`? } 3hBYx@jTO } 9}2/ko //负责部分文件的抓取 3AR'Zvn **FileSplitterFetch.java Gw-{`<CxE */ 35AH|U7b package NetFox; tC$+;_=+F CE muF&t'k import java.io.*; {yT<22Fl import java.net.*; s0vcGh#w ]
s 2ec QD^= ;! public class FileSplitterFetch extends Thread { pX3E l$p g0a!auWM s nxwe String sURL; //File URL v,N!cp1 long nStartPos; //File Snippet Start Position Q2]7|C long nEndPos; //File Snippet End Position "30=!k int nThreadID; //Thread's ID pp*MHM)x|q boolean bDownOver = false; //Downing is over ? N]bFW"t| boolean bStop = false; //Stop identical u 1}dHMoX~ FileAccessI fileAccessI = null; //File Access interface X"g,QqDD cdH`#X -gC%*S5& public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException +kxk z"fP { H3d|eO4+W this.sURL = sURL; K)`R?CZ:s this.nStartPos = nStart; x~8R.Sg this.nEndPos = nEnd; <?8cVLW}O nThreadID = id; V_v+i c^ fileAccessI = new FileAccessI(sName,nStartPos);//定位 wod{C ! } >.C$2bW<L r
z@%rOWV RiZ}cd public void run() Qd% (]L[N. { jL4"FTcE]3 while(nStartPos < nEndPos && !bStop) RN1KM { #q0xlF@ #\Q)7pgi. XM?c*,=fu try{ p((. (fx URL url = new URL(sURL); Cx(HsJ!, HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); JPT&!%~ httpConnection.setRequestProperty("User-Agent","NetFox"); r[kHVT8 String sProperty = "bytes="+nStartPos+"-"; !{uV-c-5, httpConnection.setRequestProperty("RANGE",sProperty); F3Vvqt*2 Utility.log(sProperty); 1ATH$x DX3jE p2 l<sWM$ez InputStream input = httpConnection.getInputStream(); \B/( H)Cd* //logResponseHead(httpConnection); (lYC2i_b# l`0JL7 {"|GV~ byte[] b = new byte[1024]; 5y0LkuRR: int nRead; ;tD?a7 while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) EmP2r*"rb { P:XX8 nStartPos += fileAccessI.write(b,0,nRead); [ CU8%%7 //if(nThreadID == 1) 1_}k)(n // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); c No)LF } ,<OS:] Wk-.dJ FuBUg _h Utility.log("Thread " + nThreadID + " is over!"); m]=G73jzO bDownOver = true; .:;q8FL/ //nPos = fileAccessI.write (b,0,nRead); H0.&~!,* } \4*i;a.kU catch(Exception e){e.printStackTrace ();} ke +\Z>BWN } K~5(j{Kb8 } ,0>_(5 X)[QEq^ ;%u)~3B$JK //打印回应的头信息 \jkDRR[ public void logResponseHead(HttpURLConnection con) F
'HYWH0? { kwt;pxp i for(int i=1;;i++) ?0s&Kz4B { "bO]AG String header=con.getHeaderFieldKey(i); GCcSI;w if(header!=null) J/ vcP //responseHeaders.put(header,httpConnection.getHeaderField(header)); EJaO"9
( Utility.log(header+" : "+con.getHeaderField(header)); Gn10)Uf8X else A#79$[>w break; N *n?hN } aMJ9U)wnK } bV@5B#] 2R 2fUz}w ( oX/#Mct{s public void splitterStop() 6XeqK*r* { O}lqY?0* bStop = true; a9nXh6 } 0R,Y[).U sD<8-n rIH+X2x } mP)im]H xoE,3Sn 4Gy3s|{ /* hA"z0Fszh **FileAccess.java ue}lAW{q *//文件访问(定位,写) jin?;v package NetFox; e=Kr>~q= import java.io.*; )jRaQ~Sm q]*:RI?wGT ><;.vP public class FileAccessI implements Serializable{ QlxlT $o} FCYZ9L5uF //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 gJZ9XLPC RandomAccessFile oSavedFile; l)1ySX&BU long nPos; Nx(y_.I{K 04z2gAo =Sn!'@%U] public FileAccessI() throws IOException F8Z6Ss|v3 { TUd=qnu this("",0); W}oAgUd } SRk-3 : X_I.f6v{ #+P)X_i` public FileAccessI(String sName,long nPos) throws IOException ?DJ,YY9P { ( e(<4-& oSavedFile = new RandomAccessFile(sName,"rw"); %G~%:uJ5 this.nPos = nPos; =CO#Q$ oSavedFile.seek(nPos); "[]72PC } 4T#Z[B[ TWQ{,
B >E(IkpZ public synchronized int write(byte[] b,int nStart,int nLen) *W<g%j-a { tZY(r
{ int n = -1; wsfn>w?!V try{ q|ZQsFZ oSavedFile.write(b,nStart,nLen); SbpO<8}8 n = nLen; Ibl==Irk } j6$_U@)%O catch(IOException e) !Lj+&D|z { [k6 5i e.printStackTrace (); })r[qsv } ='r4zz E)l@uPA'1 nbz?D_ return n; Rs%6O|u7 } Wj.
_{ c7N`W}BZ T\Q)"GB } r`/tb^ xo_Es? E%+1^
L /* l4Y}<j\; **SiteInfoBean.java =zW.~(c{ */ PfVjfrI[ package NetFox; D(<20b, ^?tF'l` >?A3;O] public class SiteInfoBean { Lv
,Ls (@?PN+68| xpVYNS{c+| private String sSiteURL; //Site's URL $
V"7UA22 private String sFilePath; //Saved File's Path ojd/%@+u+Y private String sFileName; //Saved File's Name R|AGN*. private int nSplitter; //Count of Splited Downloading File O ijG@bI8 *tT}y(M %.D@{O public SiteInfoBean() ve /Q6j{ {//nSplitter的缺省值为5 ~3 z10IG //default value of nSplitter is 5 v
~%6!Tr this("","","",5); sL tsvH# } SNd]c R:v`\ 1)M>vdrP public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) Ye_)~,{,p { %k3a34P@ sSiteURL= sURL; qN_jsJ sFilePath = sPath; a4! AvG sFileName = sName; EkqsE$52 this.nSplitter = nSpiltter; x3my8'h@ `W[oLQ ]7^YPFc+ } ef!V EtEOv BY$%gIB6> ,Tyh._sa public String getSSiteURL() ~Hs a6F&F { ~z!U/QR2 return sSiteURL; NLC}XL } !W8'apG&[ rf8`|9h"7 "sRR:wzQu public void setSSiteURL(String value) .yF7{/ { #.%;U' #O sSiteURL = value; P Z;O
pp } MqI!i> 7Q.?]k& Y0U<l1(| public String getSFilePath() 0BIH.ZV# { Ydu=Jg5u7 return sFilePath; Qp${/ } sEL[d2oO 'on, YEp @&d/}Mx"t public void setSFilePath(String value) Jh[fFg] { yHhBUpIo sFilePath = value; C=AX{sn } [N925?--S 6kKIDEX X4Eq/q" public String getSFileName() 4>>d
"<}C {
>kK return sFileName; e ?H`p"l } w.Ft-RXA W 6P!M+PO mg*[,_3q33 public void setSFileName(String value) z.pP~he { W04-D sFileName = value; bY;ah;< } oO>mGl36H nYMdYt04sl eEQ
4L\d public int getNSplitter() 3m?3I2k { )}7rM6hv return nSplitter; }S$]MY,* } !B(6 m4|9p{E &B7X LO[ public void setNSplitter(int nCount) uQ{ &x6.1 { 2rf-pdOvG nSplitter = nCount; D'#Wc#b } TgVvp0F; } m
Fwx},dl qv=i eU "wT[LA9\ /* ]Z@-r **Utility.java ep Eg6
*/ W)?B{\ package NetFox; hO@'WoniW X)xQKkL0 p^A9iieHp= public class Utility { 4r5?C;g zN {'@B gz-}nCSi public Utility() < ppg$; { > c?Z.of F%t`dz!L r+;op_ } c
Q|nL DnP>ed"M! //线程睡眠 a&p|>,WS public static void sleep(int nSecond) tD.md_E { |28z4 . try{
=h\,-8 Thread.sleep(nSecond); (5re'Pl } &hEtVkK catch(Exception e) 7g cr$&+e { JVFn=Mw e.printStackTrace (); _1f!9ghT\ } \SS1-UbL } egxh sME3s- //日志 U`D/~KJ{Y public static void log(String sMsg) q<yp6Q3^ { 8/x@|rjW System.err.println(sMsg); >Q#_<IcI } lzN\~5a} AF>J8 V fn(KmuNA public static void log(int sMsg) kcVEE)zb { 0p:FAvvNI System.err.println(sMsg); Ua)ARi % } B)O{+avu } <V#9a83JP ds,NNN<HW 9sifc<za /* "m.j cKt **TestMethod.java iVLfAN @ */ r'#5ncB package NetFox; r1yz ?Y_P M3c-/7 h.E8G^}@ public class TestMethod { /\V-1 7- (PE x<r1 8hZ+[E} public TestMethod() SZW`|ajH { ///xx/weblogic60b2_win.exe 8<z+hWX=4 try{ 1~Zmc1] SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); a.#`> //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); Va"Q1 *" SiteFileFetch fileFetch = new SiteFileFetch(bean); fgK1+sW fileFetch.start(); 8e:J{EG~ } 3,=97Si= catch(Exception e){e.printStackTrace ();} F~2bCy[Z ) gbns'Z< w5w,jD[ } OOn{Wp ov*?[Y7|~ c!vtQ<h- public static void main(String[] args) tAO,s ZW { sygxV new TestMethod(); d
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