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/* x[A|@\Z **SiteFileFetch.java NlYuT+ */ F|%PiC,,qO package NetFox; '5}hm1, import java.io.*; _Sjj|j import java.net.*; pH~\~ G^'We6< (Mv~0ShakO public class SiteFileFetch extends Thread { yQJ0",w3o. T{prCM EU(e5vO SiteInfoBean siteInfoBean = null; //文件信息Bean xM())Z|2 long[] nStartPos; //开始位置 f]*;O+8$LN long[] nEndPos; //结束位置 %_ew{ff| FileSplitterFetch[] fileSplitterFetch; //子线程对象 |5>Tf6$( long nFileLength; //文件长度 2j
f!o boolean bFirst = true; //是否第一次取文件 g0 f4>m boolean bStop = false; //停止标志 6AIqoX*p File tmpFile; //文件下载的临时信息 _DR@P(0>_ DataOutputStream output; //输出到文件的输出流 >VhZv75 O%%Q./oh //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) u<j;+-]8h public SiteFileFetch(SiteInfoBean bean) throws IOException GwO`@-}E { RIkIE=+6 siteInfoBean = bean; j32*9 //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); h<L_ =)lH tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); &n*ga$Q if(tmpFile.exists ()) E}Cz(5 { E"}%$=yK bFirst = false; v:lkvMq|= read_nPos(); 0H rvr } ;9~YQW@| else n)N!6u { G/
si( LK nStartPos = new long[bean.getNSplitter()]; V 2Xv) nEndPos = new long[bean.getNSplitter()]; "d}']M?-h } ,b^Y8_ltoT 5VE=Oo#& e"1mdw" a|TUH+| } rHk(@T.] -8)C6"V{ \[!{tbK`2 public void run() /#5rt&q { P|1 D6 //获得文件长度 {^
BZ#)m| //分割文件 3 85qQppz //实例FileSplitterFetch 5%wA"_ //启动FileSplitterFetch线程 q'fOlq //等待子线程返回 i=5!taxu}E try{ ipG 0ie+ if(bFirst) (4z_2a(Dl, { f2tCB1[D+ nFileLength = getFileSize(); u;%~P 9O if(nFileLength == -1) qAp<OJ { Q@p'nE, System.err.println("File Length is not known!"); -7oIphJ=\ } ZT"vVX-)G else if(nFileLength == -2) Vh01y f { uD{^1c3x System.err.println("File is not access!"); ?gu!P:lZS } V6>{k_0{V else f*V^HfiQb { %X}D(_ for(int i=0;i<nStartPos.length;i++) ">B&dNrt { Q?.9BM1V nStartPos = (long)(i*(nFileLength/nStartPos.length)); vh|m[ p } ^-Ks_4 for(int i=0;i<nEndPos.length-1;i++) ]=3hH+1 a { 1C=42ZZ&2 nEndPos = nStartPos[i+1]; LvGo$f/9 } +pUYFDwFx nEndPos[nEndPos.length-1] = nFileLength; M~X~2`fFH } dXWG`G_ } 7lOAu]Zx D41.$t[ M"-53|#:w\ //启动子线程 .K_50%s fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 0m4#{^Y for(int i=0;i<nStartPos.length;i++) 1JS5 LS { 7wrRIeES fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), %h_N%B$7c1 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), .F/l$4CQ nStartPos,nEndPos,i); fX
LsLh+~D Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); uYE"OUNWL fileSplitterFetch.start(); M6[O>z } 2_6@&2 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), _Fkb$NJ"]Q siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); gxDyCL$h3 // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 3! KyO)8 nEndPos = " + nFileLength); (^ J2( // fileSplitterFetch[nPos.length-1].start(); nS!m1&DeD | m#" pfMmDl5| //等待子线程结束 gE23C*!'&: //int count = 0; EBmkKiI; //是否结束while循环 sEa| 2$ boolean breakWhile = false; w\JTMS$ ypvz&SzIh On;7 while(!bStop) _k)EqPYu@ { o^d write_nPos(); |kHzp^S Utility.sleep(500); $3Sm? breakWhile = true; :Q;mgHTNz
6(B[(Af ad<ZdO*h for(int i=0;i<nStartPos.length;i++) x,<|<W5<% { YB9)v5Nz( if(!fileSplitterFetch.bDownOver) q$B|a5a? { _dVA^m breakWhile = false; %G,d&%f break; *)T7DN8 } Zu ![v0 } ?[8s`caK. if(breakWhile) /6'5uP
break; xQs._YY qD(dAU h(FFG%H( //count++; %hA0 //if(count>4) E>1%7"
i< // siteStop(); E(an5x/r } BK foeN)% (+9^)No Uclta System.err.println("文件下载结束!"); NvJ}|w,Z } 'Fa~l'G7X catch(Exception e){e.printStackTrace ();} bx3kd+J7 } kXZG<? M~*o =t a_Z[@W //获得文件长度 ;TCT%j`^o public long getFileSize() >^adxXw.o { y.WEO> int nFileLength = -1; Y'x+!&H try{ $&FeR*$|g URL url = new URL(siteInfoBean.getSSiteURL()); 71k>_'fl HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); f5vsxP)Y[ httpConnection.setRequestProperty("User-Agent","NetFox"); hR~~k~84 L[}Ak1 A 0`kaT
?> int responseCode=httpConnection.getResponseCode(); ;c0z6E / if(responseCode>=400) -<@QR8: { j%Z%_{6Ds* processErrorCode(responseCode); m 3"|$0C~ return -2; //-2 represent access is error K`twbTU } 52z{ q,2 +\i kTS#>uS String sHeader; 6 9EdMuf {Nny.@P)H {*t0WE&1t for(int i=1;;i++) yq\p%z$: { 9\a;75a //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); t(5PKD#~Dc //Utility.log(in.readLine()); T8-,t];i sHeader=httpConnection.getHeaderFieldKey(i); U|)CZcM if(sHeader!=null) Ggp. %kS6F { J(=io_\bO if(sHeader.equals("Content-Length")) q#t&\M.U { I?Ct@yxhF' nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); y-^m break; o@A|Lm. } @_C?M5v } ctu`FQ else >}6V=r3[+ break; &u~#bDh } h!q_''*; } db5@+_ catch(IOException e){e.printStackTrace ();}
<5:`tC2 catch(Exception e){e.printStackTrace ();} eeu;A,@U !OL[1_-4|K < r7s,][& Utility.log(nFileLength); 6z ,nt CH+mzy &(i_s return nFileLength; QeNN*@
='i } ^QTtCt^: #jd&f,Tt L@>$
Aw //保存下载信息(文件指针位置) #f-pkeaeq private void write_nPos() vG'I|OWg { :DoE_ try{ 1?,1EYT" output = new DataOutputStream(new FileOutputStream(tmpFile)); a5nA'=|}i output.writeInt(nStartPos.length); kYnp$8 for(int i=0;i<nStartPos.length;i++) u;3wg`e { LMTz/M // output.writeLong(nPos); o GN*p_g output.writeLong(fileSplitterFetch.nStartPos); l7vxTj@(- output.writeLong(fileSplitterFetch.nEndPos); ?3Y~q;I]O } O#72h] output.close(); -0f,qNF } \^]*T'>b catch(IOException e){e.printStackTrace ();} crl"Ec catch(Exception e){e.printStackTrace ();} \k>1q/T0V } gUHx(Fi[4 fF]w[lLDv 3:"w"0[K3 //读取保存的下载信息(文件指针位置) :jr`}Z%;y private void read_nPos() U\GuCw { 0I['UL^!F try{ ^\C Fke= DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); HvLx int nCount = input.readInt(); %_%BbQf nStartPos = new long[nCount]; ae0t*;~ nEndPos = new long[nCount]; P^[y~I#{ for(int i=0;i<nStartPos.length;i++) J^y?nE(j { /X;/}fk nStartPos = input.readLong(); hI 1or4V nEndPos = input.readLong(); za!8:( } C2C1 @=w input.close(); `lA_knS } ,)M/mG?, catch(IOException e){e.printStackTrace ();} SW)jDy catch(Exception e){e.printStackTrace ();} wDDNB1_E } 3@42uG> " 6ScVa5) &a.A8v) private void processErrorCode(int nErrorCode) l1vI { qPBOt;N System.err.println("Error Code : " + nErrorCode); <b:xyHS } j]C}S*`" K5!OvqzG A DVUx} //停止文件下载 a:Nf+t public void siteStop() <$??Z;6 { Xo$SQ0K bStop = true; gI!d*]{BP for(int i=0;i<nStartPos.length;i++) CaC \\5wl fileSplitterFetch.splitterStop(); {2 k]$| ^.9DfA0 % {-r'Yi% } Qk >9o } :b]
\* //负责部分文件的抓取 \q\"=
**FileSplitterFetch.java nyetK */ mLx=Zes:. package NetFox; Q5lt[2Zyzd 4n"6<cO5q !yd]~t
5Q import java.io.*; 0SQrz$y import java.net.*; 1'N<ITb EJ(36h {Fqwr>e public class FileSplitterFetch extends Thread { K|Eelhm 3"juj' 4/%Y@Z5 String sURL; //File URL n
=WH=:& long nStartPos; //File Snippet Start Position 3b|=V long nEndPos; //File Snippet End Position C`R<55x6 int nThreadID; //Thread's ID icb*L ~qm boolean bDownOver = false; //Downing is over pKno~jja boolean bStop = false; //Stop identical % m"Qg< FileAccessI fileAccessI = null; //File Access interface 3-&~jm~" w51l;2$des @v#,SF { public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException *AP"[W { 8t. QFze? this.sURL = sURL; lXZ*Pb<j this.nStartPos = nStart; c&I this.nEndPos = nEnd; ^/6P~iK' nThreadID = id; ;rF[y7\ fileAccessI = new FileAccessI(sName,nStartPos);//定位 hNhEA $X5 } KyyVO" T9XUNR{& H\qZu%F' public void run() !^ad{#|X { ];lZ:gT while(nStartPos < nEndPos && !bStop) d^J)Mhju { g8l6bh$} xQ7U$QF|] d#]hqy try{ 1]eRragm" URL url = new URL(sURL); s5rD+g]E` HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); \PUJD,9H httpConnection.setRequestProperty("User-Agent","NetFox"); tv.<pP9-C String sProperty = "bytes="+nStartPos+"-"; f*B-aj# httpConnection.setRequestProperty("RANGE",sProperty); fBctG~CJH Utility.log(sProperty); ~bCA8 M;,$
)>P Z.u1Dz InputStream input = httpConnection.getInputStream(); pA8As //logResponseHead(httpConnection); p7@R+F\.}; ]/H6%"CTa g27'il byte[] b = new byte[1024]; KMz!4N int nRead; aY#?QjL while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 8\!E )M|4 { 9i}$245lB nStartPos += fileAccessI.write(b,0,nRead); 4&;iORw&E4 //if(nThreadID == 1) xsn=Ji2 F // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); GPK\nz} } O"+0 b| No} U[u.O _OTVQo Ap Utility.log("Thread " + nThreadID + " is over!"); D,ZLo~ bDownOver = true; %&yPl{ //nPos = fileAccessI.write (b,0,nRead); 1QG q;6\ } +q'1P}e catch(Exception e){e.printStackTrace ();} ;6Yg}L } fDf[:A,8 } .Mb[j1L^ uW(-? o#e8
Piw //打印回应的头信息 X!ruQem / public void logResponseHead(HttpURLConnection con) [jzsB:;XB& { TXmS$q
for(int i=1;;i++) hOUH1m. { 'R79,)|;[ String header=con.getHeaderFieldKey(i); B5;%R01A if(header!=null) () _RLA //responseHeaders.put(header,httpConnection.getHeaderField(header)); 7;fC%Fq Utility.log(header+" : "+con.getHeaderField(header)); ^w\22 Q else q2vD)r break; )N&SrzqTK } N3|:MMl } 0% rDDB fd&Fn=! \Y)HSJR;e public void splitterStop() FBNLszT{L { {fR\yWkt? bStop = true; 5-|!mSd } My8d%GfM 8(%F{&<; Xfq`k/ W } G&g;ROgY E(r_mF7: @.eN+o9| /* 73cb1kfPd **FileAccess.java 4^L;]v,|7 *//文件访问(定位,写) ^Spu/55_ package NetFox; |IcW7( import java.io.*; ,<rC,4-F< JY,$B-l xaMDec V public class FileAccessI implements Serializable{ Te+(7
Z !<p,G`r //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 6nW)2LV RandomAccessFile oSavedFile; 4E^ ?}_$ long nPos; M}\h?s ,eyh%k*hz 7S a9 public FileAccessI() throws IOException duY?LJ @g { [I
*_0 this("",0); y8k8Hd1<f } G"<#tif9K !?P8[K /+Z*)q+SbT public FileAccessI(String sName,long nPos) throws IOException HOP*QX8C% { :V'99Esv` oSavedFile = new RandomAccessFile(sName,"rw"); fqgp{(`@> this.nPos = nPos; DSU8jnrL oSavedFile.seek(nPos); PK[mf\G\ } -5<[oBL; B6
0 W+ S~__K public synchronized int write(byte[] b,int nStart,int nLen) o$No@~%v { 8o~
NJ 6 int n = -1; ukiWNF/ try{ /hl'T'RG oSavedFile.write(b,nStart,nLen); 6'# 5Dqw"r n = nLen; pa>C}jk}6 } 5CY%h catch(IOException e) m+(Cl#+ { 9;@p2t*v e.printStackTrace (); E 2nz } W"NI^OX 981-[ga`Y T9nb ~P[ return n; [}L~zn6>?a } &QHJ%c ( /]'e} 0kE[=#'.' } pfN(Ae
Pt W==~9 e*:K79y /* 1VJ${\H] **SiteInfoBean.java *vb"mB */ Z
[!"x&H]h package NetFox; }3#\vn0gT RjWwsC~B _Y; TS1u public class SiteInfoBean { f[o~d`z
-UhpPw6 9j2t|D4uT private String sSiteURL; //Site's URL N5?bflY private String sFilePath; //Saved File's Path :v^/k]S private String sFileName; //Saved File's Name !5ps,+o private int nSplitter; //Count of Splited Downloading File Qq,2V h^3gYL7O6 zdYH9d>D public SiteInfoBean() 7]VR)VA M {//nSplitter的缺省值为5 uxfh?gsL //default value of nSplitter is 5 f}-'67*Y this("","","",5); 9X*Nk~}Y } k|;a"56F e9LX0= -@> {q/ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) "Z@P&jl { ^'X
I%fEf sSiteURL= sURL; @O#!W]6NT6 sFilePath = sPath; VX)8pV$ sFileName = sName; /v!yI$xc this.nSplitter = nSpiltter; p(F@lL- ]Uv,}W f{9+,z } 0z=KnQx"4 +<bj}" I5"wa:Z public String getSSiteURL() 7@c!4hmrU { P+CV4;Xz return sSiteURL; i%i~qTN } tD8fSV zhJeTctRz !9d7wPUFr public void setSSiteURL(String value) Ct=bZW"j/ { Z`-$b~0 sSiteURL = value; !U`4 } >2#<gp3 v47' dC A'EI1_3{ public String getSFilePath() Iy)1(upM { x1:mT[[$ return sFilePath; {6u)EJ } }IygU 6{G @5Tl84@Q dDS{XR public void setSFilePath(String value) ^wy { S?v/diK ]J sFilePath = value; "leSQ } ;lmg0dtJ Tg)F.): [Qs`@u<% public String getSFileName() "ku[b\W { $:s@nKgnD~ return sFileName; uzp\V
39 } )WvKRp r I[E 6N2 JpXv+V public void setSFileName(String value) c|<F8n { ]t<=a6<P sFileName = value; 0Y oKSo } _`gF%$]b !$Uo$?gC 7nPg2K& public int getNSplitter() 45 biy(qa { u-~ec{oBu return nSplitter; 1XiA } YI0l&'7 C2<TR PT "e-z2G@z public void setNSplitter(int nCount) ~2*LWH*@ { bB4FjC': nSplitter = nCount; >|S@twy } ^S|qGu,G } EI=~*&t }/J"/ T -+ F,L8 /* k*_Gg **Utility.java 6EC',=)6R */ Zwq\m.h package NetFox; v
RD/67 KS#A*BRQ 5 _y w public class Utility { L%H\|>k` Wm1dFf.> ]$#bNt/p public Utility() ;):;H?WS|A { ~AWn 1vFc 0;x&\x7K wMkHx3XD } nHF66,7t {_tq6ja-< //线程睡眠 TgJ+:^+0 public static void sleep(int nSecond) N?c~AEk9U { st??CX2 try{ 8nZ_. Thread.sleep(nSecond); 3` IR
^ } e
6wevK\ catch(Exception e) ,fiV xn Q { .0,G4k/yv e.printStackTrace (); N5W!(h) } kJ%a;p`O } 1Ov oW Nx ;^JMX4[ //日志 j0"4X public static void log(String sMsg) >'#vC]@ { w15a~\Qu System.err.println(sMsg); pFs/ipZX^* } zA?AX1%Wa l?b*T#uIk ouyZh0G public static void log(int sMsg) [c;0eFSi2 { Gv]94$'J9 System.err.println(sMsg); 16N| } djoP`r } daCkjDGl\ 'b" 7Lzp2 V:t{mu5j /* :RDk{^b) **TestMethod.java bz 7?F! */ )l(DtU!E package NetFox; zXUB6.
e #zgO_H b%x=7SMXO public class TestMethod { 74NL)|M EqBTN07dZS <3ep5` 1 public TestMethod() g/FT6+&T. { ///xx/weblogic60b2_win.exe 7wY0JS$fz try{ }4piZ
ch SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); xY.?OHgG/ //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); J0f!+]~G3 SiteFileFetch fileFetch = new SiteFileFetch(bean); o:*$G~. k fileFetch.start(); 3me&isKL } fGA#0/_` catch(Exception e){e.printStackTrace ();} OaT]2o n``9H91 "E4CQL'U } }Q\+w,pJgN p Djt\R<f vxi_Y\r=T public static void main(String[] args) !,Cbb } { A42!%>PB new TestMethod(); WuI$ }
JJs*2y }
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