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/* aF[#(PF **SiteFileFetch.java ?u5jXJ0L */ q2U?EP{8~ package NetFox; `{NbMc\
] import java.io.*; 9&zQ5L> import java.net.*; sJMpF8
WidLUv y!T8( public class SiteFileFetch extends Thread { ,n`S
, `neo.] 0J6* U[ SiteInfoBean siteInfoBean = null; //文件信息Bean &\
K long[] nStartPos; //开始位置 -EE}HUP) long[] nEndPos; //结束位置 P('bnDU FileSplitterFetch[] fileSplitterFetch; //子线程对象 vDyGxU!#\ long nFileLength; //文件长度 fg/hUUl boolean bFirst = true; //是否第一次取文件 4KR$s Kq$q boolean bStop = false; //停止标志 Rm}G4Pq File tmpFile; //文件下载的临时信息 [Wxf,rW i DataOutputStream output; //输出到文件的输出流 U#%+FLX@w r::0\{{r"p //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) o1k+dJUd public SiteFileFetch(SiteInfoBean bean) throws IOException Z`#XB2, { <B'PB"R3y siteInfoBean = bean; +UiJWO //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 8\G"I tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); U,lO{J[T if(tmpFile.exists ()) +1r><do; { TAq[g|N-; bFirst = false; g>g*1oS read_nPos(); )2
b-3lz } So=
B cX- else vGOO"r(xL { X<H{ nStartPos = new long[bean.getNSplitter()]; DT_%Rz~< nEndPos = new long[bean.getNSplitter()]; I|Mw*2U } qfRrX" .*Z#;3 .EC~o Y?-Ef
sK } !$#5E1:\ >>cL"m j=c< Lo` public void run() $W9dUR0 { Ya-GDB;L //获得文件长度 Ap 3B' //分割文件 Qn.3B //实例FileSplitterFetch }*b\=AS= //启动FileSplitterFetch线程 30<_` //等待子线程返回 >DN^',FEm try{ 3S1{r
)[j if(bFirst) t#%J=zF{ { `~\8fN nFileLength = getFileSize(); ZG?e% if(nFileLength == -1) 5RP5%U { E,fbIyX System.err.println("File Length is not known!"); qTN30(x2 } E= .clA else if(nFileLength == -2) L* ScSxw { p.H`lbVY System.err.println("File is not access!"); IJC]Al,df } etQS&YzC else bP,Ka { >qUD_U3A for(int i=0;i<nStartPos.length;i++) 1tTY)Evf { kh8 M= nStartPos = (long)(i*(nFileLength/nStartPos.length)); h>p,r\X } m}]QP\ for(int i=0;i<nEndPos.length-1;i++) MHGaf`7ro { m-#]v}0A nEndPos = nStartPos[i+1]; #V$sb1u } HZjuL.Tj nEndPos[nEndPos.length-1] = nFileLength; `R!2N4|; } FEX67A8/; } ;9q$eK%d /O`R9+; @Fzw_qr
M //启动子线程 @jq H8 fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; fAfB.|cd for(int i=0;i<nStartPos.length;i++) rV2>;FG { foB&H;A4oC fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), m)]|mYjju siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), )@] W= nStartPos,nEndPos,i); [&l+V e( Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 4q(,uk&R[ fileSplitterFetch.start(); @Y<fj^]k } }:[MSUm5 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), O&}R siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); rDu?XJA // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", KuEM~Q= nEndPos = " + nFileLength); ggpa!R // fileSplitterFetch[nPos.length-1].start(); l@]Fzl :XTxrYt28 !& >LLZ //等待子线程结束 'Mhnu2d //int count = 0; /||8j.Tm //是否结束while循环 = )4bf"~8 boolean breakWhile = false; 8#9OSupp Cv/3-&5S Ns#L9T# while(!bStop) !3o/c w9 { C4t~k write_nPos(); EW3--33s Utility.sleep(500); /Xv@g$ breakWhile = true; uaxkGEXr j 20mZ )q/brCq for(int i=0;i<nStartPos.length;i++) xK4E+^ b { |CK/-UG} if(!fileSplitterFetch.bDownOver) k^K%."INn { uKB V`I breakWhile = false; :qV|rih_Q break; >SS^qjh/ } A0Q1"b= } J7~Kjl if(breakWhile) =$ubSfx break; NxB/U_j ;=@?( n ?%/*F<UVQ //count++; ''k}3o.K[ //if(count>4) '*t<g@2$ // siteStop(); @V+KL>Qw } 5d}bl{ ,4}s 1J# p%/lP{ System.err.println("文件下载结束!"); IxY!.d_s|~ } 7t78=wpLc catch(Exception e){e.printStackTrace ();} ! \5)!B } ?ZkVk =t? q^~w:$^U o[S
Mt //获得文件长度 z5sKV7&\[n public long getFileSize() -qLNs_
_k { %6Y}0>gY int nFileLength = -1; Ie8SPNY-H try{ q~X}&}UT URL url = new URL(siteInfoBean.getSSiteURL()); QqcAmp HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); G {a;s-OA3 httpConnection.setRequestProperty("User-Agent","NetFox"); Yi19VU|/ GB>T3l" akwS;|SZ int responseCode=httpConnection.getResponseCode(); h(^[WSa if(responseCode>=400) maV*+!\ { a`Q-5*\;z processErrorCode(responseCode); SL_JA return -2; //-2 represent access is error Ppx 4#j } jtqU`|FSQ 1J&hm[3[K ~c\2' String sHeader; ;@n/gU qVds
2 )Rj?\ZUR for(int i=1;;i++) cO-^#di { 0_t9;;y : //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); aDE}'d1qo //Utility.log(in.readLine()); ^HHT>K-m sHeader=httpConnection.getHeaderFieldKey(i); 8P2_/)| if(sHeader!=null) P{,=a]x,mz { W=,]#Z+M; if(sHeader.equals("Content-Length")) QR$m i1Vv\ { ,{Z!T5 | nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 3v)``
n@ break; !{ORFd } Ihl]"76q/ } w"
A{R else @^HZTuP2; break; Tb]
h<S } \x"BgLSE } <V#]3$(S catch(IOException e){e.printStackTrace ();} #O7phjzgD catch(Exception e){e.printStackTrace ();} @j%7tfW xI~ c~KC
"b`3 Utility.log(nFileLength); 1#2L9Bi gNh4c{Al9 Nm3CeU return nFileLength; \r&(l1R } 'tVe#oI Wa%p+(\<uB X C'| //保存下载信息(文件指针位置) <h`}I3Ao private void write_nPos() =z}M(<G { ZrWA,~; try{ #jw%0H;l] output = new DataOutputStream(new FileOutputStream(tmpFile)); quFNPdP output.writeInt(nStartPos.length); i\{fM}~W$ for(int i=0;i<nStartPos.length;i++) :/;;|lGw { MhN8'y( // output.writeLong(nPos); ?6:e%YT output.writeLong(fileSplitterFetch.nStartPos); jf&
oN]sZ output.writeLong(fileSplitterFetch.nEndPos); m .^WSy } ~vfPsaRh output.close(); M7neOQHq } ,6wGd aMR catch(IOException e){e.printStackTrace ();} vGp`P catch(Exception e){e.printStackTrace ();} PxJvE*6^H } .y#>mXm>
AHLXmQl Lx3`.F\mG //读取保存的下载信息(文件指针位置)
L$ [1+* private void read_nPos() f5.Be% { Vv>hr+e try{ zBqNE` DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); t>"|~T$9 int nCount = input.readInt(); .kDJuJ^ nStartPos = new long[nCount]; NHzVA*f nEndPos = new long[nCount]; YKa9]Q for(int i=0;i<nStartPos.length;i++) 4o( Q+6m { +qyx3c+ nStartPos = input.readLong(); vz)zl2F5sY nEndPos = input.readLong(); ^i17MvT'
} #LG<o3An input.close(); N\x<'P4q } P)UpUMt;k catch(IOException e){e.printStackTrace ();} l, j0n0h. catch(Exception e){e.printStackTrace ();} J8DKia|h( } !]P=v`B. ='HLA-uT g"D:zK) private void processErrorCode(int nErrorCode) 37|EG { 4HyD=6V# System.err.println("Error Code : " + nErrorCode); ,f[Oy:fr } ,v(ikPzd
e{*z4q1 Bv}nG| //停止文件下载 <&}N[ public void siteStop() 0JLQ.%_ { +kOXa^K bStop = true; vNAQ/Q for(int i=0;i<nStartPos.length;i++) MNKY J fileSplitterFetch.splitterStop(); Qr[".>+ ]DI%7kw' ;vgaFc] } \B8[UZA.& } |f+fG=a67V //负责部分文件的抓取 X1%_a.=VF **FileSplitterFetch.java c)17[9" */ R9%"Kxm package NetFox; N1'$;9 c '6Yx03t us^J!
s7 import java.io.*; c nV2}U/\ import java.net.*; '_o(I <#7j~ < 1zY"Uxp public class FileSplitterFetch extends Thread { q]m$%> Iyt.`z !Bb^M3iA String sURL; //File URL ngH_p> long nStartPos; //File Snippet Start Position S{qsq\X long nEndPos; //File Snippet End Position ^1[u'DW4 int nThreadID; //Thread's ID 6 kAXE\T boolean bDownOver = false; //Downing is over s!/Q>A boolean bStop = false; //Stop identical s C?-L FileAccessI fileAccessI = null; //File Access interface \v([,tiW% `HsI)RmX f.Ms3)) public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ')j@OO3 { 5=P*<Dnj this.sURL = sURL; (rjv3=9\3 this.nStartPos = nStart; /1LQx>1d this.nEndPos = nEnd; UQ+!P<>w
nThreadID = id; zT jk^ fileAccessI = new FileAccessI(sName,nStartPos);//定位 o$,e#q)8 } GhY MO6Q4 l%MIna/Tp 0%]F&| public void run() Z`kI6 { s;YuB#Z while(nStartPos < nEndPos && !bStop) gJuA*^ { LT)G"U~
8=j_~&* |kkg1M# try{ A$o ?_ URL url = new URL(sURL); &13#/ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ,c[f/sT\ httpConnection.setRequestProperty("User-Agent","NetFox"); ^es/xt String sProperty = "bytes="+nStartPos+"-"; 9Zpd=m8dU httpConnection.setRequestProperty("RANGE",sProperty); F]^ZdJ2 Utility.log(sProperty); #
,27,# (T2\ @#&y InputStream input = httpConnection.getInputStream(); mdukl!_x //logResponseHead(httpConnection); f#zm}+,` DbvKpM H ^EmI;ks byte[] b = new byte[1024]; ]"4\]_?r int nRead; x)^t5"F while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) f hr
QJ { ;TG<$4N nStartPos += fileAccessI.write(b,0,nRead);
.'^Pg //if(nThreadID == 1) L:RMZp*bK // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); G,h=5y9_J } ^`oyf{w@ .wz.Jr`{ S(h+,+289 Utility.log("Thread " + nThreadID + " is over!"); \>r<z46x bDownOver = true; %v 1NDhaXz //nPos = fileAccessI.write (b,0,nRead); eh}{\P } 2 1]87$ catch(Exception e){e.printStackTrace ();} &\/p5RX } 1A-ess\ } R3gg{hQ 8iwqy0< tJ!s/|u( //打印回应的头信息 NU$?BiB?R public void logResponseHead(HttpURLConnection con) Y+UM> { SFx|9$hXm for(int i=1;;i++) UBvea(z-# { e`Vb.E) String header=con.getHeaderFieldKey(i); AH#klYK if(header!=null) w-9fskd6e //responseHeaders.put(header,httpConnection.getHeaderField(header)); 2';f8JLY Utility.log(header+" : "+con.getHeaderField(header)); .@(9v.:_u else W=@]YI break; @XFy^? } r__Y{&IO } =dTsGNz gl~>MasV& .l(t\BfE~ public void splitterStop() Ud[Zv?tA: { "] 0sR bStop = true; BX=YS) } 3,RaM^5dV Erd)P 1dahVc1W } 2[R{IV8e i?1g{JW }qOj^pkJ /* rkz_h **FileAccess.java -<Zs7( *//文件访问(定位,写) S 8$kxQg package NetFox; QvN=<V import java.io.*; ?A7_&=J% dwAFJhgh ?E:L6,a public class FileAccessI implements Serializable{ }+Ne)B E jLu`DKB //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 K}p!W"!o RandomAccessFile oSavedFile; &E&e5(&$ long nPos; 8Qt'Y9| V"{+cPBO) uNSbAw3 public FileAccessI() throws IOException dJ}E,rW} { $Q cr this("",0);
B1!b@0^ } 0kdPr:B Q0 N?mTAF'M UBy<
vwnU public FileAccessI(String sName,long nPos) throws IOException PtT=HvP!k { W{!GL oSavedFile = new RandomAccessFile(sName,"rw"); sHSD`mYq this.nPos = nPos; 8DsXw@o oSavedFile.seek(nPos); 1IRlFC } aOH$}QnS Eu^?e
{Bb:S"7NX public synchronized int write(byte[] b,int nStart,int nLen) v2uyn { HX77XTy int n = -1; z]Dbca1a` try{ F qW[L>M' oSavedFile.write(b,nStart,nLen); vS{zLXg n = nLen; [j]3='2}G } k[p7)ec catch(IOException e) 5 UQbd8 { NY`$D}Bi e.printStackTrace (); tgP x!5U } Y]SX2kk(2 ~Yw`w2 Mr3;B+S return n; =E?!!EIq. } |E YJbL;1% ]'2;6%.4 SCZ6:P"$qX } ~K-c-Zs#z 1k
*gbXb Uz`K#Bz
/* N BUSr}8| **SiteInfoBean.java _*I@ J/ */ Uczb"k5 package NetFox; @1w9!\7Vt jeM/8~^4- [8o!X) public class SiteInfoBean { t)*MLg<C R\B-cU[, nf7l}^/UE private String sSiteURL; //Site's URL eXqS9`zKr private String sFilePath; //Saved File's Path d }"Dp private String sFileName; //Saved File's Name 'F- wC! private int nSplitter; //Count of Splited Downloading File 8RfFP\ AP 4t0B_o" Sf2pU!5n^ public SiteInfoBean() >(}
I7 {//nSplitter的缺省值为5 v ;q<h //default value of nSplitter is 5 8Q%rBl. this("","","",5); J4-64t nZ } zdoJ+zRtK JIl<4 %A *hP9d;-Ar public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 8$H_:*A? { d3$&I==;: sSiteURL= sURL;
YtzB/q8I sFilePath = sPath; ptrQ~m- sFileName = sName; 5jTBPct this.nSplitter = nSpiltter; Aqwjs
3 B4yC"55 *[-% .=[7 } >>ncq$ lAxbF 0
s-IW public String getSSiteURL() r
pv`% { gRk%ObJGqm return sSiteURL; UKBVCAK } }w0>mA0=H xMAfa>]{n Iq@: n_~ public void setSSiteURL(String value) ZZ<uiN$ { 5w\>Whbd sSiteURL = value; ;<JyA3i^V, } nty^De% XQW+6LEQ b>B.3E\Pc public String getSFilePath() dc.o K4G} { :Kl~hzVSOa return sFilePath; JP2zom } |6%B2I&c 'Y
ZYRFWXM FJ|6R( T_ public void setSFilePath(String value) cK;,=\ { pohA??t2: sFilePath = value; SD "' } 7>Af"1$g u*I=. TV~<1vj public String getSFileName() MT8BP)C { x:h0/f return sFileName; D5wy7`c } H8V${&!ho _%M5
T 7fVlA "x public void setSFileName(String value) hP=^JH { 1keH 1[ sFileName = value; FCC9Ht8U? } }/ p>DMN 9t.u9C=!F qP"+SVqC public int getNSplitter() %nTgrgS(= { h}X^ return nSplitter; ewNzRH,b } 03F%!Rm/j Svs!C+:le x<m{B@3T public void setNSplitter(int nCount) t:DZow { +:hZ,G?> nSplitter = nCount; E4a`cGb } 3yWu-U \k } As&=Pb9 )T-C/ 3 He#5d!cf:M /* xz-z"
8d **Utility.java uQwKnD?F+e */ 0Q81$% @< package NetFox; XYJ7k7zc+Y u!=9.3
O
"jX|5 public class Utility { U*G8}W BO#XQ, ~i)m(65: public Utility() {*gO1TZt9 { N$8do? I7b_dJD;* 9] i$`y } K.y2 $b/ O]"3o,/]G //线程睡眠 (;f7/2~` public static void sleep(int nSecond) q5jLK) { 0y>]68D try{ YVzcV`4w( Thread.sleep(nSecond); k 8C[fRev } O5:?nD catch(Exception e) 5pJ)OX { n"[VM=YGI e.printStackTrace (); *Nv!Kuk } cs'ylGH } (=hXt=hZ Mw=sW5Z //日志 E\3fL"lM public static void log(String sMsg) !H,_*u. { <r6e23 System.err.println(sMsg); av-l_iE } {s=n "*Qp) s:_M+_7_ 6`/nA4S4. public static void log(int sMsg) 8<,b5 { PNm WZW* System.err.println(sMsg); >EVlMt27' } H3$~S ' } (AHZmi
V (8M^|z}q 8Iz-YG~%3 /* t7A ' **TestMethod.java 3~zK :( */ ~]+-<O^U~ package NetFox; }LXS!Ff: 3=6`'PKRQ I)
mP? public class TestMethod {
%9D$N
eBZa9X$ cY%[UK $l public TestMethod() c\X0*GX { ///xx/weblogic60b2_win.exe Jr0D: try{ *?;<buJb? SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); OYcf+p"<\ //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); x"hZOgFZ SiteFileFetch fileFetch = new SiteFileFetch(bean); L@ ,-V fileFetch.start(); fZoV\a6Kj } Dj=OUo[[d catch(Exception e){e.printStackTrace ();} 2h<{~; .rfufx9Sw {fkW0VB; } K\Oz
~,z (C<~:Y?% aE[>^~Lv} public static void main(String[] args) J.
]~J|K { :K%{?y new TestMethod(); 9fk@C /$ } #[.vfG }
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