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/* n<:d%&^n **SiteFileFetch.java N4H+_g| */ T_x+sv=|X! package NetFox; @qPyrgy import java.io.*;
NVJ&C]H6 import java.net.*; Nr24[e
G>d sk
?'^6Xh pTALhj#, public class SiteFileFetch extends Thread { Ww96|m nh eU~jb q[7d7i/r6 SiteInfoBean siteInfoBean = null; //文件信息Bean F[CT l3X long[] nStartPos; //开始位置 k9)u3 long[] nEndPos; //结束位置 i6md fp|k FileSplitterFetch[] fileSplitterFetch; //子线程对象 Yxd{&47 long nFileLength; //文件长度 'dc+M9u)_q boolean bFirst = true; //是否第一次取文件 Q*:h/Lhb& boolean bStop = false; //停止标志
f5aF6FBH File tmpFile; //文件下载的临时信息 6%kJDY. DataOutputStream output; //输出到文件的输出流 bqrJP3 qggk:cN1 //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Dk`4bYK public SiteFileFetch(SiteInfoBean bean) throws IOException 43>9)t { Pc(n@'m~ siteInfoBean = bean; rMHQzQ0% //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ,MM>cOQ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); )@,90Vhh if(tmpFile.exists ()) 1/2V.:bg { ,|.8nk" bFirst = false; xIQ/$[&v read_nPos(); MkDK/K$s } eOehgU5x else )[^y
t0% { \-
=^]]b= nStartPos = new long[bean.getNSplitter()]; sm;E2BR$
` nEndPos = new long[bean.getNSplitter()]; QtY hg$K3 } b0YiQjS6> nuSN)}b<Q Ug7`ez4vw `z}vONXpAX } *
-KJh_ j /H>0^ c6,s+^^ public void run() l
Io9,Ke { A<SOT >m] //获得文件长度 d1V^2Hb? //分割文件 DD!MGf/ //实例FileSplitterFetch {N!E5*$Tr //启动FileSplitterFetch线程 .Iwur;/\ //等待子线程返回 .?rbny try{ _ }E-~I> if(bFirst) StU 4{ { mDQEXMD nFileLength = getFileSize(); rGnI( m. if(nFileLength == -1) [1b6#I"x { =.36y9Mfo System.err.println("File Length is not known!"); _F`$ d2 } [ WV@ w else if(nFileLength == -2) 0]T.Lh$3 { rQ~ \~g[tP System.err.println("File is not access!"); )MWUS;O< } ME$2P!o else *jM_ wwG { YDQ:eebg( for(int i=0;i<nStartPos.length;i++) gA~20LSt { K(nS$x1G nStartPos = (long)(i*(nFileLength/nStartPos.length)); C4QeDvpI } >4n+PXRXX for(int i=0;i<nEndPos.length-1;i++) ;rB6u_5"I. { gjj 93 nEndPos = nStartPos[i+1]; `$s)X$W? } gq'>6vOj nEndPos[nEndPos.length-1] = nFileLength; 3 p/b } (O\U /daB } gi6g"~%@q1 Deg!<[Nw aUH\Ee^M:R //启动子线程 YD&|1h fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; F9(._ow[ for(int i=0;i<nStartPos.length;i++) GX4QaT% { Z_H?WGO fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), @#RuSc siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Q6"uK nStartPos,nEndPos,i); gNShOu Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); e`i7ah; fileSplitterFetch.start(); G'
Blp } ,E\h !/X // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), OT%0{2c"] siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ]N*L7AVl // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", E{tx/$f nEndPos = " + nFileLength); g;pR^D'M5C // fileSplitterFetch[nPos.length-1].start(); jY7=mAd +R-h ,$\=7 wfgqgPo!v //等待子线程结束 ?4XnEDAm //int count = 0; %.mEBI=hs //是否结束while循环 W'a(oI boolean breakWhile = false; hd+]Ok7" l)4O . * M!1U@6n!=) while(!bStop) j'K38@M:MN { ]' Y|Nl write_nPos(); !p9)CjQ " Utility.sleep(500); I>PZYh'.T breakWhile = true; kv6Cp0uFg >F1G!#$0 4&QUh+F for(int i=0;i<nStartPos.length;i++) Cyq?5\ a { |0`hE;Kt7 if(!fileSplitterFetch.bDownOver) C5xag#Z1 { zuSq+pxL@ breakWhile = false; R}8XRe break; Wf#VA;d } _;56^1'T } $ a? if(breakWhile) e}'gvm break; {~SaRB2<' E<>*(x/\e A{# Nwd> //count++; $B;_Jo\| //if(count>4) NzQ9Z1Mxy // siteStop(); : [q0S@ } nVE9^')8V MtS3p>4 v2Bzx/F: System.err.println("文件下载结束!"); dBSbu=^$ ) } v,=v catch(Exception e){e.printStackTrace ();} Lxv6!?v| } a5@z:i *z'8j "w Af.=F //获得文件长度 oH^(qZ8W public long getFileSize() %Y]=1BRk} { (D<(6? int nFileLength = -1; NQfYxB1Yr: try{ /kgeV4]zR URL url = new URL(siteInfoBean.getSSiteURL()); hfqqQ!,l! HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ~*M$O & httpConnection.setRequestProperty("User-Agent","NetFox"); r> k-KdS "g>.{E5 )"Q*G/+2Ie int responseCode=httpConnection.getResponseCode(); Wy4$*$ if(responseCode>=400) c~0{s> { oc7$H>ET1 processErrorCode(responseCode); CS 8jA\ return -2; //-2 represent access is error TX}T|ri } &$'z \8S~c8Z~ '$G"[ljr String sHeader; )[L^Dmd, 0fm*`4Q gn8|/ev for(int i=1;;i++) hoM|P8
}rh { k1^\| //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); LJFG0 W //Utility.log(in.readLine()); ]0c+/ \b& sHeader=httpConnection.getHeaderFieldKey(i); |F[=b'? if(sHeader!=null)
\(~wZd { !ErH~<f%K if(sHeader.equals("Content-Length")) 6KHN&P { R\mR $\cS nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); x}TS break; p8}(kHUp( } QSw<%pcJE@ } ht =P\E else !}f1`/ break; g13 rx%- } YO+{,$ } JhHWu< catch(IOException e){e.printStackTrace ();} +JRF0T catch(Exception e){e.printStackTrace ();} 2 PqS%`XiS #3$\Iu @%/]Q<<q Utility.log(nFileLength); ~]HN9R^& yWDTjY/ JL=U,Mr6 return nFileLength; 7F^#o-@=J } B9R(&<4 .zg8i_ Cx<0 H //保存下载信息(文件指针位置) N8toxRu private void write_nPos() |re}6#TgcT { \1"'E@+ try{
O.`Jl% output = new DataOutputStream(new FileOutputStream(tmpFile)); [XVEBA4GI output.writeInt(nStartPos.length); *&BnF\?m for(int i=0;i<nStartPos.length;i++) m: n`g1 { $
_j[2EU // output.writeLong(nPos); o*WY= output.writeLong(fileSplitterFetch.nStartPos); ({r*=wAP output.writeLong(fileSplitterFetch.nEndPos); v+7kU= } ?BA]7M(,4 output.close(); fhPkEvJ } XfPFo6 catch(IOException e){e.printStackTrace ();} Wj|alH9< catch(Exception e){e.printStackTrace ();} Zxr!:t7 } Vd^g9 %nN `|\ {S/yL[S. //读取保存的下载信息(文件指针位置) j9Ybx# private void read_nPos() r={c,i { `Z:R Ce^ try{ aj8A8ma*} DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 5=Xy,hmnC int nCount = input.readInt(); ~h}Fi nStartPos = new long[nCount]; L`f^y;Y. nEndPos = new long[nCount]; [B@'kwD\l for(int i=0;i<nStartPos.length;i++) }En { XU!2YO)t;! nStartPos = input.readLong(); :NJ_n6E nEndPos = input.readLong(); gE#>RM5D } )?+$x[f!* input.close(); Jk@]tAwoM } |4$M]M f0 catch(IOException e){e.printStackTrace ();} &'cL%. catch(Exception e){e.printStackTrace ();} theZ]5_C } JB!:JML QaUm1i# s { #3r private void processErrorCode(int nErrorCode) S$KFf=0 { P96pm6H_; System.err.println("Error Code : " + nErrorCode); X%yO5c\l2 } BA\/YW @ oFOnjK"|F +"9hWb5 //停止文件下载 n>@oBG)! public void siteStop() N0hE4t { )`^p%k bStop = true; $kR N
h6 for(int i=0;i<nStartPos.length;i++) G\|,5HED fileSplitterFetch.splitterStop(); 8XbA'% o rG,5[/l $w"$r$K9K } 9x,RvWTb } ^C2\`jLMY //负责部分文件的抓取 ]HpA5q1ck **FileSplitterFetch.java Y*mbjyt[?X */ (sVi\R package NetFox; LC1(Xbf !i=nSqW =zwOq(Bh W import java.io.*; ^CwR!I.D}4 import java.net.*; %,+leKs 2^?:&1: f/CuE%7BR public class FileSplitterFetch extends Thread { cwGbSW$t J\e+}{ 9"g6C< String sURL; //File URL @&[T _l long nStartPos; //File Snippet Start Position 1S@vGq} long nEndPos; //File Snippet End Position o)'y.-@Q int nThreadID; //Thread's ID A*W)bZs. boolean bDownOver = false; //Downing is over j0@[Br %7 boolean bStop = false; //Stop identical GR\5WypoJ FileAccessI fileAccessI = null; //File Access interface z=$jGL 2t $ j uc|45Zxt public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException SNY~9:;]f { ~on(3|$ this.sURL = sURL; bXS:x this.nStartPos = nStart; p!s}=wI` this.nEndPos = nEnd; c'*a{CV4P nThreadID = id; ZyEHzM{$ fileAccessI = new FileAccessI(sName,nStartPos);//定位 mFHH515 } np~~mdmRK ek&kv #G LzYO$Ir:g public void run() *5xJv { u ElAnrm while(nStartPos < nEndPos && !bStop) q 4V7 { z
$MV%F <8,cuX\ @)K%2Y` try{ cV`E>w=D0 URL url = new URL(sURL); %Q!`NCe+[ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); -j&Tc`j_ httpConnection.setRequestProperty("User-Agent","NetFox"); dMrd_1 String sProperty = "bytes="+nStartPos+"-"; Q[#vTB$f httpConnection.setRequestProperty("RANGE",sProperty); f3UXCp Utility.log(sProperty); f
nI| $y
b4xU
TT-h;'nJ InputStream input = httpConnection.getInputStream(); S(7ro]U9 //logResponseHead(httpConnection); z)uuxNv[R }W
^: cp lSH6>0#B byte[] b = new byte[1024]; J/3_C6UZ int nRead; nJ"
' while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) t+Op@*#% { +kFxi2L6 nStartPos += fileAccessI.write(b,0,nRead); pAk/Qxl3eo //if(nThreadID == 1) cCR+D.F // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); N:9>dpP}O } c5mZG7- \o';"Q1H 2ZQ}7`Y Utility.log("Thread " + nThreadID + " is over!"); [b$4Shx bDownOver = true; aj}(E+ //nPos = fileAccessI.write (b,0,nRead); gR@C0 } 5[Pr|AY catch(Exception e){e.printStackTrace ();} h;j IYxj } /6_|]ijc } Y \:0Ev bb
d. WAn'kA //打印回应的头信息 [{X^c.8G) public void logResponseHead(HttpURLConnection con) (L`j0kPN { (x q% for(int i=1;;i++) b?eu jxqg { &Ni`e<mP String header=con.getHeaderFieldKey(i); ~gu3g^<0v if(header!=null) sUYxT>R //responseHeaders.put(header,httpConnection.getHeaderField(header)); x\Y $+A,P Utility.log(header+" : "+con.getHeaderField(header)); "al`$ %( else u_).f<mUdF break; )+Oujt } r `eU~7 } 3su78e t} P<K){V F9*g= public void splitterStop() %K]euEqs { Lq>&d,F06) bStop = true; 4BwQA#zE } t5lO'Ll*Q] WlYs~(=9 O3CFme } d9n?v)<v f}D1|\7 8KH\`5< /* |_G )qp; **FileAccess.java WF\)fc#;_o *//文件访问(定位,写) {$ep7;'d package NetFox; #);[mW{F import java.io.*; dZ _zg< =LTmr1? =f(cH152T public class FileAccessI implements Serializable{ |T{C,"9y f>ZyI{ //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 aTzjm`F0 RandomAccessFile oSavedFile; %_Yx<wR% long nPos; 1bw{q.cmD jzK5-;b YSaJeU>@ public FileAccessI() throws IOException !p1qJ [ { sN("+ sZ.n this("",0); [ 4;Ii } H}LS??P I=;+n- 7n90f2"m public FileAccessI(String sName,long nPos) throws IOException nhN);R~o"1 { 7u[j/l, oSavedFile = new RandomAccessFile(sName,"rw"); s[gKc ' this.nPos = nPos; KLX/O1B oSavedFile.seek(nPos); O+RP3ox" } jLJ1u/l>; %_UN<a #oJ5k8Wy public synchronized int write(byte[] b,int nStart,int nLen) X w .p { p!/[K6u int n = -1; pZyQY+O try{ {Q<$Uo6V oSavedFile.write(b,nStart,nLen); y ?G_y n = nLen; 'q * Bdx } R<x'l=,D( catch(IOException e) .ZMW>U> { G
Xt4j e.printStackTrace (); L>Mpi$L } }Yv\0\~'W| Bb{!Yh].:A s`Cy
a` return n; *z'yk* } 7E!7"2e
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} -{
u*qtp v_<2H'*Q +PK6-c\r /* _W3Y\cs,- **SiteInfoBean.java IcIOC8WC */ t\v+ogbk) package NetFox; umLb+GbI4 ",>H(wJ8 p
h[\) public class SiteInfoBean { ?r_l8 -A-tuyIsh" YwcPX`eg private String sSiteURL; //Site's URL hO[3 Z^X private String sFilePath; //Saved File's Path Gs2p5nL< private String sFileName; //Saved File's Name @/UfDye private int nSplitter; //Count of Splited Downloading File (5^ZlOk3 u-"c0@ B}d.#G+_$x public SiteInfoBean() \M]-bw` {//nSplitter的缺省值为5 :c8n[+5 //default value of nSplitter is 5 _7a'r</@ this("","","",5); n-QJ;37\ } OlD`uA 0iEa[G3 CVXytS?@x public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) %i)B*9k { ^6p'YYj"5 sSiteURL= sURL; <Q<+4Y{R sFilePath = sPath; nT#JOmv sFileName = sName; )
uP\>vRy this.nSplitter = nSpiltter; TOLl@p]lU Eaad,VBtU ngi<v6 i } /NF# +bx 1px\K8 b]gY~cbI8 public String getSSiteURL() F=)eLE{W { 6ri\>QrF return sSiteURL; 7.bN99{xPM } u}6v?! +pqM ^3t|y NHX>2-b public void setSSiteURL(String value) d`Q7"}uZ { 9h(IUD{8 sSiteURL = value; f"&Xr!b.h } b~7drf 0'$p$K !F!3Q4 public String getSFilePath() ``?6=mO { G%TL/Z40 return sFilePath; @{Py % } ;_<)JqUh '4;6u]d)2 Uz8hANN0_ public void setSFilePath(String value) Qu{cB^Ga* { "PpjoM
~ sFilePath = value; S T8!i`Q$ } 'b:Ne,< $R{8z-,Q <xS=# public String getSFileName() UCqs}U8 { zREJ#r return sFileName; X`20f1c6q> } |k-XBp ACBQ3 1"K*._K public void setSFileName(String value) _LfHs1g4 { J me% sFileName = value; JE%A|R<Jl } ?p8k{N(1 QV,E#(\5 nx4P^PC public int getNSplitter() P0\eBS { {^RG%
&S return nSplitter; +p/1x'J } Nh)[rx ekzjF\!y 4u:0n>nJ1 public void setNSplitter(int nCount) #7z|mVzH { q/6UK = nSplitter = nCount; K%,$ V,# } uzorLeu } dhR(_ = hX[ Z6=~1'<X /* &`:rp!Lc **Utility.java ~y\:iL//E */ ^Qh-(u` package NetFox; K=kH%ZK , Fytk34 Q(\ wx public class Utility { LC'F<MpM \K`jCsT q6[}ydV public Utility() I5pp "*u { t9*= <lld*IH =l|>.\- } <NQyP{p {$TZ}z"DA //线程睡眠 E#h~V5Tf public static void sleep(int nSecond) .Dv=pB,u { |>sv8/! try{ 44C+h Thread.sleep(nSecond); )W9_qmYd" } /| GH0L catch(Exception e) NV!4(_~ { Hhf72IX e.printStackTrace (); Wu{&;$ } =WRO\lgv. } 3h JH(ToO Dt {') //日志 Y.
TYc; public static void log(String sMsg) _bQL[eXd { tBl#o ^ System.err.println(sMsg); /VtlG+dLl } w4OW4J# 2NR7V*A =K6c; public static void log(int sMsg) ta! V=U { rUFFF'm\*a System.err.println(sMsg); "#XtDpGk } y"R("j $ } ?cBO6^ Q eK{MF T 'i~_R6 /* o4'v> b **TestMethod.java $n*%v85 */ &l!$Sw-u; package NetFox; "z/V%ZK~f 6<76O~hNZ 0o;~~\fq. public class TestMethod { 9%TT>2# f=oeF]=I" #O6
EP#B public TestMethod() fIEw(k<* { ///xx/weblogic60b2_win.exe C@)pmSQ try{ rys<-i( SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); /d]~ly
@uI //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); #`58F . SiteFileFetch fileFetch = new SiteFileFetch(bean); "8_,tYAH fileFetch.start(); .P%ym~S } zW)gC9_|m- catch(Exception e){e.printStackTrace ();} E.#6;HHzN Xv*}1PZH )[ w&C_>] } \Jf9npz3 9mm2V ps; O99mic public static void main(String[] args) x.G"D( { u
!.DnKu new TestMethod(); ULTNhq
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