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/* D+xPd< **SiteFileFetch.java rm%MQmF */ "R0(!3 package NetFox; 1StaQUB import java.io.*; b[^|.>b import java.net.*; glomwny 4W<8u( 7OD2/{]5 public class SiteFileFetch extends Thread { &?*H`5#?G i#I7ncX ldWrv7.P SiteInfoBean siteInfoBean = null; //文件信息Bean J\E?rT long[] nStartPos; //开始位置 ^wD@)Dz long[] nEndPos; //结束位置 k;f%OQsF_ FileSplitterFetch[] fileSplitterFetch; //子线程对象 M.K%;j` long nFileLength; //文件长度 ;Dp<|n boolean bFirst = true; //是否第一次取文件 ] p*Fq^ boolean bStop = false; //停止标志 8Z>=sUMQ File tmpFile; //文件下载的临时信息 "b[w%KYyl DataOutputStream output; //输出到文件的输出流 F.iJz4ya_ @DuSii#.S //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) %I#[k4,N public SiteFileFetch(SiteInfoBean bean) throws IOException ;3&HZq6Z ( { Gj&`+!\ siteInfoBean = bean; S\0?~l"} //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); :+Tvq,/" tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); C zxF if(tmpFile.exists ()) "H|hN { #@:GLmD% bFirst = false; j4+kL4M@H read_nPos(); xeW}`i5_w } <P_B|Y4N/ else f,VJfY?# { c^7QiTt_ nStartPos = new long[bean.getNSplitter()]; ]5+<Rqdbg nEndPos = new long[bean.getNSplitter()]; R]"
jr } pwmH(94$0 -Q"
N;&'[& MNocXK =2/[n8pSsM } .9!?vz]1 S?u@3PyJm cIg+^Tl public void run() z+]YB5zK% { ok/{ w //获得文件长度 #T08H,W/ //分割文件 QBLha']'% //实例FileSplitterFetch jfjT::f>l //启动FileSplitterFetch线程 c=<5DC&p //等待子线程返回 |g!3f try{ :|N(:W>=$Y if(bFirst) W$`p ,$ .n { HG&rE3@ nFileLength = getFileSize(); ]L_h3Xz\X if(nFileLength == -1) L+Q.y~ { c4iGtW System.err.println("File Length is not known!"); c52S2f7 } :tT6V(-W else if(nFileLength == -2) gUrXaD# { a[7Lqu System.err.println("File is not access!"); lO=~&_ } 6MmkEU z else 5^Ps(8VbS { &5Huv?^a' for(int i=0;i<nStartPos.length;i++) t{Z:N']H { F1NYpCR nStartPos = (long)(i*(nFileLength/nStartPos.length)); qHE( p+]E } frUO+ for(int i=0;i<nEndPos.length-1;i++) nE=,=K~ { A;gU@8m nEndPos = nStartPos[i+1]; Mcqym8,q|3 } :NXM.@jJ=" nEndPos[nEndPos.length-1] = nFileLength; ,_I#+XiXY } 1Ts$kdO } \kG;T=H T*qSk! BL H~`N3U //启动子线程 wD5fm5r= fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; |WsB0R for(int i=0;i<nStartPos.length;i++) tQIa6c4| { h.)o4(bO fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), W5R / siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 4(TR'_X( nStartPos,nEndPos,i); /7uAf{ Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); a
G\ fileSplitterFetch.start(); 2)(ynrCe } Y *n[*N // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), +K7oyZg siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 52q<|MW% // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", D0LoT?$N nEndPos = " + nFileLength); tlcNGPa // fileSplitterFetch[nPos.length-1].start(); 5'S~PQka* { !NXu */y (~O6 //等待子线程结束 .a7!*I#g //int count = 0; j S<."a/n //是否结束while循环 WbGN
5?9Q boolean breakWhile = false; x#}{z1op9 g @qrVQv G$-[(eu- while(!bStop) ;CLOZ{ { @aUQy; write_nPos(); ?k+>~k{}a Utility.sleep(500); Fm4)|5 breakWhile = true; UpS7>c7s ^(~%'f >WmTM0 for(int i=0;i<nStartPos.length;i++) 8 EUc
6 { pvY BhTz0 if(!fileSplitterFetch.bDownOver) k.!m-5E { `,$PRN"] breakWhile = false; }$Z0v` break; y-lBaTE9 } dQJ)0!B } H1-eMDe if(breakWhile) ")D5ulb\ break; 1i/&t[ `
*q>E ~;yP{F8? //count++; @3Gr2/a //if(count>4) s_%KWkS // siteStop(); E@_]L<Z } `]j:''K ~ ^*;#[< nj6|WJ System.err.println("文件下载结束!"); .^V9XN{'a } l#fwNM/F catch(Exception e){e.printStackTrace ();} tFu"h1 } nWFU8u% IM=3n%6 ;3Z6K5z*f //获得文件长度 %JPBD]&M public long getFileSize() XB;C~: { $u%7]]Y^\ int nFileLength = -1; {3eg4j.Z try{ fzZ`O{$8 URL url = new URL(siteInfoBean.getSSiteURL()); D] +]Br8 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); X{ f#kB]w httpConnection.setRequestProperty("User-Agent","NetFox"); L&hv:+3N _m*FHi A8T8+M: int responseCode=httpConnection.getResponseCode(); K(}g!iT)~ if(responseCode>=400) )6*)u/x: { bE6bx6=u processErrorCode(responseCode); 'J_`CS return -2; //-2 represent access is error $d5}OI"g } wf2v9.;X:< &NH[b1NMr u#nM_UJe String sHeader; Dy|)u1? 'f-8P /Jf}~}JP for(int i=1;;i++) :N64FR# { f f5 e]^, //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); CkR
95* //Utility.log(in.readLine()); Y+ !z]S/x sHeader=httpConnection.getHeaderFieldKey(i); i)=
\-C if(sHeader!=null) JVR,Py:%G { HcCT=x7: if(sHeader.equals("Content-Length")) Ot;)zft { Dbw{E:pq nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); D\^\_r): break; `rb}"V+ } Zmz $
hr } 7UsU03 else )8%m|v#W break; nd~O*-uYg } S#*aB2ZS } M`p[ Zq catch(IOException e){e.printStackTrace ();} w\y) catch(Exception e){e.printStackTrace ();} "P a y2 b=XXp`h~a r<5i Utility.log(nFileLength); Y|cj&<o gN.n_! c'
Q4Fzj0' return nFileLength; om2)Cd9~7 } E7 P'} d~#:t~
$, J*4T|#0 //保存下载信息(文件指针位置) A,4Z{f83 private void write_nPos() -+y3~^EYm, { 22@w: try{ AmB*4p5b output = new DataOutputStream(new FileOutputStream(tmpFile)); WSbD."p< output.writeInt(nStartPos.length); [oOV@GE for(int i=0;i<nStartPos.length;i++) a/xnf<(H { N#GMvU#R // output.writeLong(nPos); 5#~E[dr output.writeLong(fileSplitterFetch.nStartPos); <-"[9 w output.writeLong(fileSplitterFetch.nEndPos); w+gPU1|(r } KJ
cuZ."wX output.close(); 4}NCdGD } Qrw:Bva) catch(IOException e){e.printStackTrace ();} MG vp6/Pd catch(Exception e){e.printStackTrace ();} 5M\bH'1 } v]y=+* A y wmC>`0p <&l@ ):a //读取保存的下载信息(文件指针位置) Y_/w}HB private void read_nPos() uZa)N-=b2 { h-6x! 6pm try{ v+C%t!dx DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 0t%`jY~% int nCount = input.readInt(); upiYo(sN. nStartPos = new long[nCount]; 7M<co," nEndPos = new long[nCount]; C(n_*8{ for(int i=0;i<nStartPos.length;i++) a xz-H`oq4 { RG:_:%@%} nStartPos = input.readLong(); #6@4c5{2=4 nEndPos = input.readLong(); \G2PK&)F } ]/7#[ input.close(); >
1=]. } t'[`"pp= catch(IOException e){e.printStackTrace ();} ~z'Y(qG catch(Exception e){e.printStackTrace ();} :{%~L4$HI } ('+C $ Q2"K!u] {R?VB!dR private void processErrorCode(int nErrorCode) ")9jt^ { H3+P;2{ System.err.println("Error Code : " + nErrorCode); A`*Sx"~jdx } :@~mN7O* byPqPSY |%@pjJ`3 //停止文件下载 P52qt N< public void siteStop() Sb^o`~ Eh { ^1bM=9]F0 bStop = true; XA\wZV
|{ for(int i=0;i<nStartPos.length;i++) ?u>A2Vc! fileSplitterFetch.splitterStop(); %*OQH?pyx} Q-KBQc fvRqt)Ks } ]v l?J } e17]{6y //负责部分文件的抓取 NmTo/5s **FileSplitterFetch.java ZQAiuea */ v G~JK[ package NetFox; s#FX2r3=Fg ;N!opg))d< 0E#?H0<OeG import java.io.*;
CP
Ju= import java.net.*; Va^(cnwa g/gaPc*86 lT_dzO public class FileSplitterFetch extends Thread { .9q`Tf zT ")!Df>' VBz
G`&NG String sURL; //File URL Z GrDa long nStartPos; //File Snippet Start Position V`}u:t7r long nEndPos; //File Snippet End Position @zT2!C?^L int nThreadID; //Thread's ID }$#PIyz boolean bDownOver = false; //Downing is over c]NZGn* boolean bStop = false; //Stop identical 1cD FileAccessI fileAccessI = null; //File Access interface ~)*uJ wW/a gnlU ;&XC*R+ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException i<*W,D6
{ meZZQ:eSl this.sURL = sURL; KgXu x-q this.nStartPos = nStart; k0,]2R this.nEndPos = nEnd; ;_m;:< nThreadID = id; V!QC.D< fileAccessI = new FileAccessI(sName,nStartPos);//定位 {
T?1v*.[ } 8zQN[[#n 7=a
e^GKo _% i!LyG public void run() E+J +fi { Ehq
[4} while(nStartPos < nEndPos && !bStop) |OIU)53A- { Se>v|6 av~kF cXK.^@du try{ p
MR4]G URL url = new URL(sURL); #lF 2qw HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); WTu!/J<\ httpConnection.setRequestProperty("User-Agent","NetFox"); dte-2?%~j String sProperty = "bytes="+nStartPos+"-"; lD$\t/8B httpConnection.setRequestProperty("RANGE",sProperty); ,,G'Zur7 Utility.log(sProperty); s3=slWY= -fOBM 4 @ X5#? InputStream input = httpConnection.getInputStream(); ~'N+O K //logResponseHead(httpConnection); )gV @6w ?L6wky{ 7h`t-6<!q byte[] b = new byte[1024]; 1i;Cw/mr int nRead; ptlag&Z while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) )1f.=QZN^; { AsR}qqG nStartPos += fileAccessI.write(b,0,nRead); Wz;@Rl|F //if(nThreadID == 1) y 7z)lBy\ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); %`lLX/4~ } 2yVQqwQm (V0KmNCW` 9[h8Dy Utility.log("Thread " + nThreadID + " is over!"); 6u xF< bDownOver = true; xW58B //nPos = fileAccessI.write (b,0,nRead); U5[r&Y
D } W
Haf}.V catch(Exception e){e.printStackTrace ();} AI-ZZ6lzR } Qe`Nb4xf } b^"mQ qyjVB/ko g|M>C:ZT //打印回应的头信息 q siV public void logResponseHead(HttpURLConnection con) z&z5EtFUTh { ,r;E[k@ for(int i=1;;i++)
p]jG
,S { K4b2)8
String header=con.getHeaderFieldKey(i); g`4WisL1n if(header!=null) bjq.nn<= //responseHeaders.put(header,httpConnection.getHeaderField(header)); \_7'f Utility.log(header+" : "+con.getHeaderField(header)); '
?a d else O;.DQ break; "
"S&zN } B5[As8Sa } M-(,*6Q 1jd.tup %yK- Q,'O public void splitterStop() _)6r@fZ.p { r(<91~Ww bStop = true; 3gv?rJV } r9p ((ir I_|W'%N] &_' evZ8 } O~Svk'.) fC/P W`4Ae F(w<YU%6 /* CKX3t:HP0 **FileAccess.java d"S\j@ *//文件访问(定位,写) _p<wATv?7t package NetFox; %&wi@ *# import java.io.*; :0p$r
pJP HC"yC;_ >RrG&Wv59 public class FileAccessI implements Serializable{ [-^xw1: ;X+cS,h //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 O7p=|F" RandomAccessFile oSavedFile; oo1h"[ long nPos; QN#tj$x c/%GfB[w0 n{=Ot^
"; public FileAccessI() throws IOException /< Dtu UM { ?y,KN}s_ this("",0); [_*?~ } l0E]#ra" I0G[K~gb fsWPU]\) public FileAccessI(String sName,long nPos) throws IOException zek>]l`! { oAvLSFn oSavedFile = new RandomAccessFile(sName,"rw"); eTI?Mu>C this.nPos = nPos; ()<?^lr33 oSavedFile.seek(nPos); lInf,Q7W } i0~Af`v $p*.[) `2y?(BJp public synchronized int write(byte[] b,int nStart,int nLen) ~6{U^3 { gCbS$Pw int n = -1; sIRfC<
/P try{ )GOio+{H oSavedFile.write(b,nStart,nLen); =+H,} n = nLen; Dy{lgT 0k } :W$-b catch(IOException e) -4obX { 2` Ihrz6 e.printStackTrace (); ViU5l*n; } <:!:7 PmtXD6p3( Lc(eY{CY return n; [{zfI`6 } BY@l:y4 Yi <1z:\ (^58$IW71 } zX6Q7Bc 4r#4h4`y| "i&9RA!1 /* f[?JLp
**SiteInfoBean.java @0%[4 */ (~fv;}}v package NetFox; ep{/m-h(!_ xRZ/[1f! hRqr public class SiteInfoBean { H`jnChD:M' B/Ltb^a ^OK;swDW private String sSiteURL; //Site's URL i;\n\p1 private String sFilePath; //Saved File's Path NTVaz. private String sFileName; //Saved File's Name Z_mQpt|y private int nSplitter; //Count of Splited Downloading File I/u>Gt B?4Iu)bCxI .etG>tH public SiteInfoBean() yTf/]H]d {//nSplitter的缺省值为5 vi` VK&+r //default value of nSplitter is 5 J|([( this("","","",5); H%0WD_ } yi2F#o 'K 3CPSyF E@-5L9eJ\ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) gw$?&[wY { arvKJmD sSiteURL= sURL; R:[#OH.c sFilePath = sPath; H#G3CD2& sFileName = sName; 7c8`D;A-K this.nSplitter = nSpiltter; y[GqV_~?Y #VxN [770 <`NtTG } @?gRWH;Pq b"Jr_24t3v QQD7NN> public String getSSiteURL() &AVX03P { i?,\>LTG return sSiteURL; .R^ R|<x } iu2O/l#r Z:diM$Z?7 d+"F(R9 public void setSSiteURL(String value) cv. j { m%c]+Our` sSiteURL = value; 5x!rT&!G } yh'*eli -J0I2D S|?P#.=GX public String getSFilePath() g'2}Y5m$` { @.,'A[D!K return sFilePath; +wZ|g6vMct } =&~ K;=: n*caP9B V(Cxd.u public void setSFilePath(String value) 2nCHL'8N { w|4CBll sFilePath = value; 4}Lui9 } e}(8BF ,l.+$G 9%riB/vkrF public String getSFileName() S'`RP2P { ,rOh*ebF return sFileName; :d~mlyFI6P } uc LDl \\{78WDA O`Htdnu public void setSFileName(String value) t{`uN { zoBp02j sFileName = value; r4fd@<=g } g[;&_gL ;u<F,o( 4L r,}tA public int getNSplitter() X^i3(N { vzF6e eaD return nSplitter; v~0lZe } :*-O;Yw?S@ !uA'0U?ky c?6(mU\x public void setNSplitter(int nCount) +~7[T/v+n { [8vqw(2Tm( nSplitter = nCount; =FMrVE } Z7 ++c<|p } b,47
EJ} 3TN'1D ei Jg$ NYs.xZ /* TN/&^/ **Utility.java /K;A bE */ -6^Ee?" package NetFox; ony;U#^T pP%+@; g_eR&kuh public class Utility { ?P}) Qa X>Z83qV5d! I*pFX0+ public Utility() Z/;hbbG { ;KG}Yr72 "9Br)3 ebLt:gGo } )iZhE"?z zLPCWP.u //线程睡眠 c~d*SDca public static void sleep(int nSecond) yr)e."#S { P<9T.l try{ H~:g=Zw Thread.sleep(nSecond); V'9OGn2v } slLTZ] catch(Exception e) e.(RhajB { ~8'HX*B]z e.printStackTrace (); |1Nz8Vr. } ^5+7D1>W% } iphdJZ/f %v^qQWy=* //日志 k"cKxzB public static void log(String sMsg) G$~hAZ { Y"dTm;& System.err.println(sMsg); k1LbWR1%wB } hJX;/~L % QaWg2Y= R^.c public static void log(int sMsg) /q!_f!<q4x { EPM(hxCIQ System.err.println(sMsg); S-brV\v7 } buHUBn[3) } !H @nAz 9~ifST\ W7 +Q&4Y /* Z#K0a' **TestMethod.java Mi`t$hmP */ _HAr0R8BY package NetFox; ke'OT>8 }-vP~I ^SS9BQ*m public class TestMethod { $:?=A5ttuo %F<3_#Y t'C9; public TestMethod() N9z!-y'X { ///xx/weblogic60b2_win.exe
K81&BVx/ try{ + Cq&~<B SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); eqpnh^0}d //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); ^!O2Fw SiteFileFetch fileFetch = new SiteFileFetch(bean); !V/p.O fileFetch.start(); X4"[,:Tw } *C> N catch(Exception e){e.printStackTrace ();} U"Z%_[* !
n?j)p. prxmDI } g$8aB{) XsMETl"Av4 p\xsW"=8q public static void main(String[] args) /jOug>s { =[Tf9uQY new TestMethod(); <"S/M]9 } JZ-M<rcC } > 'JWW*Y! 点击下载更多相关资料
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