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/* `mWQWx$V! **SiteFileFetch.java p}cd}@cQ6 */ X~`.} package NetFox; 8dYk3sk import java.io.*; oT$(<$&< import java.net.*; &8o : n^3NA|A Cw@k.{*7, public class SiteFileFetch extends Thread { 19pND
m2H1 n+:m_2T c
g3Cl[s SiteInfoBean siteInfoBean = null; //文件信息Bean A)~/~ long[] nStartPos; //开始位置 @|jKO5Y long[] nEndPos; //结束位置 -%7Jj;yA FileSplitterFetch[] fileSplitterFetch; //子线程对象 {IF}d*: long nFileLength; //文件长度 w50.gr7 boolean bFirst = true; //是否第一次取文件 yd{Y}. boolean bStop = false; //停止标志 ~pDRF( File tmpFile; //文件下载的临时信息 A8CIP:Z DataOutputStream output; //输出到文件的输出流 $l0eI d"QM;9 //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) -P IA;#Gs public SiteFileFetch(SiteInfoBean bean) throws IOException Ac*B[ywA3 { wliGds siteInfoBean = bean; #3 }5cC8_ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); O?+tY
y? tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); VPq5xSc? if(tmpFile.exists ()) \#IJ=+z { N{0+C?{_ bFirst = false; K{eqB!@j read_nPos(); \Nh^Ig } <s59OdzP else +aXMH T"U { u(TgWp5WF nStartPos = new long[bean.getNSplitter()]; XSL
t;zL: nEndPos = new long[bean.getNSplitter()]; Azdz3/ } Wfi:wCqZG w|K(>5nz ePPp)= @[[Cs*- } "`8H:y g9grfN x3p;H02i\ public void run() y5Z<uwXc { ~Q{[fy= //获得文件长度 H *z0xxa //分割文件 v3VLvh2)n //实例FileSplitterFetch 0qotC6l~_w //启动FileSplitterFetch线程 ,]>`guDV //等待子线程返回 X,C/x) try{ <*~BG)b if(bFirst) oto
wvm { E-7a`S nFileLength = getFileSize(); )ZuQ;p
if(nFileLength == -1) sWpRX2{5, { 66Cj=n5 System.err.println("File Length is not known!"); 04T*\G^:= } 2Xq!'NrS else if(nFileLength == -2) VUg~[ { n<Xm%KH. System.err.println("File is not access!"); 19YJ`(L`x } VgC9'"| else ;29X vhS8 { [gg7Z|Hu for(int i=0;i<nStartPos.length;i++) 51FK~5 { ?'8MI|*l% nStartPos = (long)(i*(nFileLength/nStartPos.length)); aaa#/OWQZ } uN?O*h/( for(int i=0;i<nEndPos.length-1;i++) :Jsz"vCg&s { VQW)qOR9 nEndPos = nStartPos[i+1]; VdN+~+A: } T\b";+!W nEndPos[nEndPos.length-1] = nFileLength; Al-%j- j@- } *{p&Fy55 } JNA}EY^2I. hvv>UC/ .of:#~ //启动子线程 ] l qFht fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; <=GzK:4L for(int i=0;i<nStartPos.length;i++) /{#_Um0. { tV}ajs fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), (HX [bG` siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), q.hc%s2? nStartPos,nEndPos,i); 0g*r!aa Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); HDae_. fileSplitterFetch.start(); 4Xb}I;rM } uZ39Vx // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), d_?Zr`: siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); YC,.Y{oY{ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 5Z>pa`_$2 nEndPos = " + nFileLength); HZQ3Ht 3Vh // fileSplitterFetch[nPos.length-1].start(); {p_vR/yN < $?}^
0R -~GJ; Uw //等待子线程结束 Tk|;5^#H //int count = 0; +Gwe%p Q //是否结束while循环 kG7,1teMk boolean breakWhile = false; `0WA!(W R(Pa Q qYiK bzy while(!bStop) 1AkHig, { `h{mj|~ write_nPos(); KJ{F,fr+v Utility.sleep(500); WuQ<AS= breakWhile = true; pj-HLuZR o0+BQ&A)s* i}{Q\#=# for(int i=0;i<nStartPos.length;i++) yt#;3 {
G#n)|p if(!fileSplitterFetch.bDownOver) Tq_X8X#p { K1{nxw!` breakWhile = false; G y7x? break; |[7$) $ } p:>? } iwx0V if(breakWhile) U;dt-3?=.h break; yzzre>F 3EX&.OL! "X}F%:HL //count++; wgP3&4cSUc //if(count>4) T@.m^|~ // siteStop(); t SLl'XeN } ~vZzKRVS u,9U0ua@; v7u}nx System.err.println("文件下载结束!"); hg/&[/eodm } e>9{36~jh catch(Exception e){e.printStackTrace ();} 3Ty{8oUs^ } -#M~NbI, NGZ>: "/h"Xg>q //获得文件长度 NJ!#0[@C public long getFileSize() !fjU?_[S { MQMy Z: int nFileLength = -1; h#;K9#x6 try{ i4Cb&h^ URL url = new URL(siteInfoBean.getSSiteURL()); _rh.z_a7w HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); BCB/cBE httpConnection.setRequestProperty("User-Agent","NetFox"); <a}|G1 h zd]L9 _ ghR]$SG int responseCode=httpConnection.getResponseCode(); fB}5,22 if(responseCode>=400) R*#Q=_ { ;//qjo processErrorCode(responseCode); W/X;|m` return -2; //-2 represent access is error U>jk`?zW } 3;gtuqwD$ [zd-=.:+M[ /s_$CSiB String sHeader; )F2tV ]k\ `3s-\> Io X9yGq for(int i=1;;i++) BV:,bS { >{=RQgGy //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); YAG3PWmD //Utility.log(in.readLine()); Z6ex<[`I sHeader=httpConnection.getHeaderFieldKey(i); f TtMmz if(sHeader!=null) [cs8/Q8+ { WX"M_=lc-@ if(sHeader.equals("Content-Length")) `W S
{ /Loe y
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader));
2xj`cFT break; 64s;6= } H<?yG-> } bx6}zkf& else jd'R2e break; GQNiBsV } }TLC b/+ } e@VRdhb catch(IOException e){e.printStackTrace ();} bJ}+<## catch(Exception e){e.printStackTrace ();} U<gw<[>f WR1,J0UU6 }PuO$
L Utility.log(nFileLength); OaWq8MIZ- ir?9{t/() :UciFIa return nFileLength; ["/x~\c'N } ,FO|'l "G(/MT^C =?aB@& //保存下载信息(文件指针位置) __npX_4%S private void write_nPos() #O
]IXo(5z { (k45k/PAP try{ -6>rR{z output = new DataOutputStream(new FileOutputStream(tmpFile)); 2F{IDcJI\ output.writeInt(nStartPos.length); .[A S for(int i=0;i<nStartPos.length;i++) =0Sa { Z2}b1#U? // output.writeLong(nPos); r2w7lf66! output.writeLong(fileSplitterFetch.nStartPos); [%Xfl7;Wh output.writeLong(fileSplitterFetch.nEndPos); 9$i`B>C~ } $
7!GA9Bn output.close(); 5}ah% } v$Z1Lh catch(IOException e){e.printStackTrace ();} cxdM!L; ` catch(Exception e){e.printStackTrace ();} C3gz)!3 } _=#mmZkq | w -W=v H0 t1& : //读取保存的下载信息(文件指针位置) M?lr#}d private void read_nPos() B\yid@e { mD3#$E!A1 try{ [8#l~
|U DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ".IhV<R int nCount = input.readInt(); .}s a2- nStartPos = new long[nCount]; WH*&MIjAr/ nEndPos = new long[nCount]; SF7
Scd for(int i=0;i<nStartPos.length;i++) v<W++X7z { \PJ89u0 nStartPos = input.readLong(); iL<O|' be nEndPos = input.readLong(); I^=M>_s4 } "?-s
Qn input.close(); *uR'eXW } cB^lSmu5 catch(IOException e){e.printStackTrace ();} WkE;tC* catch(Exception e){e.printStackTrace ();} l:HuG! } ^<-SW]x Vo()J4L 6WZp&pO private void processErrorCode(int nErrorCode) <D}k@M
Z { ww,'n{_ System.err.println("Error Code : " + nErrorCode); C/G[B?:h } "H8N,eb2 7dZ!GX?\y \)*qW[C$a //停止文件下载 H#K|SSqY? public void siteStop() ?*=Jq { tTal<4 bStop = true; (B5G?cB9 for(int i=0;i<nStartPos.length;i++) L\I/2aiE fileSplitterFetch.splitterStop(); ~MF. M8 1)y}.y5S 4<|]k?@ } 2z:9^a/]Na } qS>el3G //负责部分文件的抓取 \&fK 8H1 **FileSplitterFetch.java R}FN6cH */ G].Z| Z9 package NetFox; e6Y0G,K ]h6<o* tEl_A"^e import java.io.*; {1[8,Ho import java.net.*; %Ok.XBS) vHmn)d1pl %0QYkHdFR` public class FileSplitterFetch extends Thread { IV76#jL 2cL<` \Uiw:
, String sURL; //File URL +FI]0r long nStartPos; //File Snippet Start Position t"Rn#V\c." long nEndPos; //File Snippet End Position (#~063N,# int nThreadID; //Thread's ID %"D-1&%zY boolean bDownOver = false; //Downing is over K9c:K/H boolean bStop = false; //Stop identical eo!{rs@f FileAccessI fileAccessI = null; //File Access interface umk[\}Ip+P PYGHN
T MeC@+@C public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ~7|z 2L { &LE/hA this.sURL = sURL; wbTw\b= this.nStartPos = nStart; 7o3f5"z this.nEndPos = nEnd; *" wsMO nThreadID = id; NeH^g0Q2,g fileAccessI = new FileAccessI(sName,nStartPos);//定位 Jc*A\-qC. } LvS` t$b`Am S:wmm}XQ public void run() q-'zZ# { 8l6R.l
while(nStartPos < nEndPos && !bStop) j1)w1WY0@ { :7gIm|2"] {8eNQ-4I sqhM[u
k try{ }QK-@T@4< URL url = new URL(sURL); $P$OWp?b HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); B4%W,F:@ httpConnection.setRequestProperty("User-Agent","NetFox"); h8Gp>b String sProperty = "bytes="+nStartPos+"-"; "\30YO>\ httpConnection.setRequestProperty("RANGE",sProperty); [1Rs~T" Utility.log(sProperty); :0/I2: *`[LsG]ZF ~ ~&M&Fe
InputStream input = httpConnection.getInputStream(); &0'BCT //logResponseHead(httpConnection); 0=NB[eG c(:GsoO d4/ZOj+% byte[] b = new byte[1024]; #-{4F?DA]y int nRead; \7RP6o while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 'Q# KjY { o4xZaF4+ nStartPos += fileAccessI.write(b,0,nRead); ral0@\T //if(nThreadID == 1) \O[Cae:^? // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); n,`&f~tap } `3~w#?+=* |2Q;SaI^\ rLVS#M#&e> Utility.log("Thread " + nThreadID + " is over!"); q*>`HTPcU bDownOver = true; O3S_P]{*ny //nPos = fileAccessI.write (b,0,nRead); mU;TB%#) } yA~W|q(/V catch(Exception e){e.printStackTrace ();} N7XRk=J } Y:O%xtGi } g94NU
X Y`%:hvy~ L49`=p< //打印回应的头信息 _ 95V"h public void logResponseHead(HttpURLConnection con) /IODRso/! { ^XV$J- for(int i=1;;i++) ^j@,N&W:lG { <S<(wFE@4 String header=con.getHeaderFieldKey(i); @#nB]qV:e if(header!=null) h/d&P //responseHeaders.put(header,httpConnection.getHeaderField(header)); bx1' Utility.log(header+" : "+con.getHeaderField(header)); o}<}zTU else S>nM&758 break; -YD6 } VK8 5A } e tY9Pq WSL_Dc tR1
kn&w public void splitterStop() N]gdS]pP2{ { .pZwhb bStop = true; ?_IRO| } fn)c&|aCt mjfU[2 MbYAK-l.h } H'GyWG|Wx {/N4/gu ))<3+^S0V\ /* RV-7y^[]^ **FileAccess.java 7cH[}v`pn *//文件访问(定位,写) %c):^;6p package NetFox; ]*?qaIdqu import java.io.*; D3$}S{Yw1 \xwE4K 9 u{#S}c` public class FileAccessI implements Serializable{ ~!\n |nIm$ p' //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 7i`8 c =. RandomAccessFile oSavedFile; :`25@<*u long nPos; -W2 !_ L]cZPfI6 ZdfIe~Oni public FileAccessI() throws IOException lIz"mk
{ s-[ _% this("",0); xDm^f^}> } =JY9K0S~ wj/OYnMw &jr'vS[b public FileAccessI(String sName,long nPos) throws IOException 8sLp! O;f2 { b+,u_$@B oSavedFile = new RandomAccessFile(sName,"rw"); qhc3 oRe this.nPos = nPos; wpO-cJ!, oSavedFile.seek(nPos); 46Vx)xX } YQLp# (=,p"3^ l-g+E{ZM public synchronized int write(byte[] b,int nStart,int nLen) \^i/: { C[gy{40} int n = -1; CNQ>J`4 try{ yc?+L;fN oSavedFile.write(b,nStart,nLen); C[z5&
x2 n = nLen; P
>HEV
a } va[@XGaC3 catch(IOException e) )Z2HzjE { X H,1\J-S e.printStackTrace (); F<VoPqHq } Q0s!]Dk *H8(G%a!^
$ac
VJI? return n; ,SNN[a } D<78Tm
x ?VmEbl ]X%T^3%G } 9q(*'rAm >fNRwmi V*U{q%p( /* Ey4%N`H-^ **SiteInfoBean.java
bVaydJ* */ gP:mZ7 package NetFox; kdcr*7w ]lV\D8# PRa#;Wb public class SiteInfoBean { 5ELKL#( Zl^#U c" bxLeQWr6 private String sSiteURL; //Site's URL +zn&DG0\X private String sFilePath; //Saved File's Path U=QfInB private String sFileName; //Saved File's Name Z:j6AF3; private int nSplitter; //Count of Splited Downloading File =8#$'1K,v w,f1F;!q1 '7Q5"M'
public SiteInfoBean() z]:{ruvH {//nSplitter的缺省值为5 qVjl8%) //default value of nSplitter is 5 .93B@u this("","","",5); 2j*;1 } d[eN#< EFSln*| (r78AZ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) qRC-+k:
{ oP vk ^H sSiteURL= sURL; '@t}8J sFilePath = sPath; K)"lq5nM sFileName = sName; 0Rgo#`7l this.nSplitter = nSpiltter; ='"DUQH|* b}s)3=X@q g?-HAk6 } csABfxib ay4E\=k 9[31EiT public String getSSiteURL() 6_1v~# { |:Q`9; return sSiteURL;
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} tgz <Wqk5mR AT$eTZ]M public void setSSiteURL(String value) Cp {
j+Ia { Ky(=O1Ufu sSiteURL = value; ixJ%wnz } C
0@tMB7 MhT.Zg\ ti%uyXfja public String getSFilePath() #ub! { 2g?O+'JD return sFilePath; iY_E"$}P } I#?NxP\S u^5X@. 9 8"/]ERJ public void setSFilePath(String value) [R-&5 G!x { GO3F[l sFilePath = value; Y367Jr@^N } EkWipF( wX7|a/|@ c:>&iB-Yu public String getSFileName() k(As^'> { 1"7Rs}l7 return sFileName; e&*< "WN } |^ K"#K q4Z9;^S e;_ cC7 public void setSFileName(String value) CB&$tDi { '(N -jk sFileName = value; Qqju6} + } P01o: /} {-FS+D` kWkAfzf4a public int getNSplitter() YTWlR]Tr6? { ~x}/>-d return nSplitter; >'\cNM~nf } &tKr
?l WcE{1&PXx UM?{ba9 public void setNSplitter(int nCount) HZ>8@AVa\ { WrzyBG_ nSplitter = nCount; i]sz*\P~ } =[X..<bW9: } Yr7%C iP nu *29 EUxkYl /* 4O~E4" ] **Utility.java ?=C?3R */ <[N"W82p package NetFox; w"p,6Ew e@B+\1 JYQ.Y!X1O public class Utility { 7x,c)QES` 67916 )qi/> GR, public Utility() * &iSW~s { [5KzawV 4s{_(gy y]z^e\qc) } WGG
Va mn5"kYy? //线程睡眠 3F/05}d` public static void sleep(int nSecond) ]yzqBbV { }M9R5!=q try{ }PdHR00^ Thread.sleep(nSecond); A>SXc%K } ,<,ige catch(Exception e) fevLu[, { iGCA>5UE e.printStackTrace (); A(!nT=0o } /~k)#44 } {|{}]B y(I_ 6+B^ //日志 ]{`
8C public static void log(String sMsg) M!KHBr { 8UAbTqB- System.err.println(sMsg); ulc m } 8(GH.)I+0 Mo4#UV <ZF,3~v? public static void log(int sMsg) F0cde { %TO=]>q System.err.println(sMsg); ct,Iu+HJ } m5m'ByX(* } Y5J}*`[Mr @O~ ;H%&Jht /* T2;%@Ghc **TestMethod.java hWzjn5w3 */ j\,HquTR package NetFox; 37#|X*L KK}?x6wV0, =N_7DT public class TestMethod { P|rsq|', Afpj*o 41pk )8~pt public TestMethod() l~f>ve| { ///xx/weblogic60b2_win.exe RC[b+J,q try{ SAuZWA4g[ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); H(eGqVAq, //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); M7$ h SiteFileFetch fileFetch = new SiteFileFetch(bean); Mn<G9KR fileFetch.start(); y;0k |C } !OM
P] catch(Exception e){e.printStackTrace ();} .d\<}\zZ7J GrwoV~ ul{u^ j } 6]GEn=t [G(}`u8w" _`Ojh0@00 public static void main(String[] args) WK{{U$:$ { {l /]+8G^ new TestMethod(); <NIg`B@ 's } /7EeM{,~ } 3YtFO;- 点击下载更多相关资料
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