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/*
YmG("z **SiteFileFetch.java tH4B:Bgj! */ $??I/6 package NetFox; 6 u6x import java.io.*; x8|J-8A( import java.net.*; o8MZiU1Xf 8ao _i=&x !4!~Lk= public class SiteFileFetch extends Thread { \;Weizq5 EU#^7 (9)Q ' 'S SiteInfoBean siteInfoBean = null; //文件信息Bean zH
r_!~ long[] nStartPos; //开始位置 *Pr )% long[] nEndPos; //结束位置 %yC,^ FileSplitterFetch[] fileSplitterFetch; //子线程对象 7_t'( /yu long nFileLength; //文件长度 Z_NCD`i; boolean bFirst = true; //是否第一次取文件 eMzk3eOJ boolean bStop = false; //停止标志 !)$Zp\Sg File tmpFile; //文件下载的临时信息 y();tsWqc DataOutputStream output; //输出到文件的输出流 W,u:gzmhw ]M3yLYK/P //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) /wG2vE8e public SiteFileFetch(SiteInfoBean bean) throws IOException `D9$v(Ztr { 2g<Xtt7+o siteInfoBean = bean; An@t?#4gxi //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); !R$`+wZ62 tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); pR_9NfV{ if(tmpFile.exists ()) 5r0YA
IJ { Ys7]B9/1O bFirst = false; FI.\%x read_nPos(); Hr C+Yjp } H?w6C):] else Y:`&=wjP~ { qP
,EBE nStartPos = new long[bean.getNSplitter()]; ~#/ nEndPos = new long[bean.getNSplitter()]; 9BB=YnKE } 2<6UwF d zMb5puH q\ %I#1 HZOMlOZ } *WZA9G#V5 \U0'P;em V[V[~;Py public void run() `0svy} { "
1tH //获得文件长度 =pr7G+_u //分割文件 {{1G`;|v9 //实例FileSplitterFetch iDD$pd,e\ //启动FileSplitterFetch线程 8CE = 4 //等待子线程返回 $Kd>:f=A try{ 3U}%2ARo_ if(bFirst) y>LBl] { =|9!vzG4 nFileLength = getFileSize(); 3$/IC@+ if(nFileLength == -1) ';"VDLb3 { SfR%s8c` System.err.println("File Length is not known!"); u:b=\T L } p}P-6&k,U else if(nFileLength == -2) #z42C?V { cb bFw System.err.println("File is not access!"); d5 -qZ{W } _Ey5n!0: else ,z6~?6m { 0`H#
'/ for(int i=0;i<nStartPos.length;i++) hGrdtsH? { Zd&S@Z nStartPos = (long)(i*(nFileLength/nStartPos.length)); ('~LMu_ } &Qm@9I s for(int i=0;i<nEndPos.length-1;i++) [ hsds\ { $Q0n nEndPos = nStartPos[i+1]; 7[7"A } JS77M-Ac nEndPos[nEndPos.length-1] = nFileLength; 92{\B-
l } ?ubro0F: } .C(tMF]D, JI5Dy>u: X?Au/ //启动子线程 a{e4it fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; B<-Wea for(int i=0;i<nStartPos.length;i++) (.,G=\! { >3bCTE fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ,?3G;- siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), z{>Rc"%\ nStartPos,nEndPos,i); GthYzd:'hJ Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 8>V5dEbx' fileSplitterFetch.start(); Ts9uL5i } I:.s_8mH} // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), %znc##j)q siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); v,t:+
!8 // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ]R *A nEndPos = " + nFileLength); ]f3>-)$* // fileSplitterFetch[nPos.length-1].start(); PW4q~rc=: NVs@S-rpX |hQ;l|SWg //等待子线程结束 _4f;<FL //int count = 0; aDCwI :Li( //是否结束while循环 v>56~AJ boolean breakWhile = false; 8i pez/ Debv4Gr;^ =lC7gS!U while(!bStop) n:X y6H { = /8cp write_nPos(); 3a|\dav% Utility.sleep(500); m kexc~l breakWhile = true; oU/5 a>9~ cNH7C"@GVu _G0x3 for(int i=0;i<nStartPos.length;i++) 54/=G(F { DI%saw if(!fileSplitterFetch.bDownOver) r/1(]#kOX { [
3HfQ breakWhile = false; ctUp=po break; YzWz| } #Dac~>a' } *h|U,T7ew if(breakWhile) A=4OWV? break; /j^ 0`hdMLONR n*$ g]G$ //count++; Je{ykL?N //if(count>4) v2?ZQeHr_( // siteStop(); Yw9GN2AG } ry!!9Z>9n W4N{S.#! F5Va+z,jg System.err.println("文件下载结束!"); j@9T.P1 } Q20%"&Xp] catch(Exception e){e.printStackTrace ();} he4(hX^ } )*[3Vq BzzTGWq\ :Sma`U& //获得文件长度 g5yJfRLxp public long getFileSize() ]?*wbxU0 { r3Ykz%6 int nFileLength = -1; $C\BcKlmv try{ :%.D78& URL url = new URL(siteInfoBean.getSSiteURL()); ?8$Q-1= HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); z @Y;r=v httpConnection.setRequestProperty("User-Agent","NetFox"); oQ# 8nu{k m2o0y++TjW ]tD]Wx% int responseCode=httpConnection.getResponseCode(); SdWV3 if(responseCode>=400) =}*0-\QG { *or(1DXP8 processErrorCode(responseCode); putrSSL} return -2; //-2 represent access is error ?EL zj } _LPHPj^Pg J *yg& Ib`XT0k String sHeader; /\Ef%@ 9UkBwS` }}[2SH'nH for(int i=1;;i++) "#] $r { :0ep(<|; //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); +H.`MZ= //Utility.log(in.readLine()); R8Tx[CJ5 sHeader=httpConnection.getHeaderFieldKey(i); z}@7'_iJ if(sHeader!=null) G#CXs:1pd+ { liZxBs
:%i if(sHeader.equals("Content-Length")) ?0SEMmp`H { *Uh!>Iv; nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); RpK@?[4s break; sRW<me; } K8~d^G } +:f"Y0 else hc1N~$3!G break; `gJ(0#ac } SIllU } yr6V3],Tp catch(IOException e){e.printStackTrace ();} "zc l|@ catch(Exception e){e.printStackTrace ();} R=dC4; O=lzT~G|4 ?(PKeq6 Utility.log(nFileLength); nu^436MSOa -12U4h<e a}d@
T return nFileLength; d1*<Ll9K } ebq4g387X mR~&)QBP. : +u]S2u{ //保存下载信息(文件指针位置) &L:!VL{I private void write_nPos() GVz6-T~\> { G)YcJv7 try{ *_e3 @g output = new DataOutputStream(new FileOutputStream(tmpFile)); N;R^h? ' output.writeInt(nStartPos.length); q| 7( for(int i=0;i<nStartPos.length;i++) ==B6qX8T { ,I9bNO,%JK // output.writeLong(nPos); BWNi [^] output.writeLong(fileSplitterFetch.nStartPos); >eaaaq9B- output.writeLong(fileSplitterFetch.nEndPos); so;
]& } G5!^*jf output.close(); \^LFkp } <$YlH@;)`a catch(IOException e){e.printStackTrace ();} Lr+$_ t}r catch(Exception e){e.printStackTrace ();} D=$)n_F } #z(]xI)" 6LZCgdS{ +mPx8P&% //读取保存的下载信息(文件指针位置) -/4P3SG/ private void read_nPos() Kq!3wb; { }b}m3i1 try{ yVfC-Z DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); vX>)je5# int nCount = input.readInt(); ta0|^KAA nStartPos = new long[nCount]; _GPe<H nEndPos = new long[nCount]; <%^&2UMg for(int i=0;i<nStartPos.length;i++) Ni>[D"| { Smh,zCc>s nStartPos = input.readLong(); vI?, 47Hj+ nEndPos = input.readLong(); [7-?7mp!B } 3^ClAE"8 input.close(); TvM~y\s } e.%nRhSs3 catch(IOException e){e.printStackTrace ();} 8|^7ai[am catch(Exception e){e.printStackTrace ();} WxDh;*am: } AX INThJ ]|@^1we "4Nt\WQ private void processErrorCode(int nErrorCode) +_!QSU,@ { XZf$K _F&M System.err.println("Error Code : " + nErrorCode); bD^owa } YUb_y^B^ RCrCs ;a/E42eN; //停止文件下载 :0/7, i public void siteStop() ZcsZ$qt^ { 5-V pJ bStop = true; $qiya[&G4 for(int i=0;i<nStartPos.length;i++)
9sP0D fileSplitterFetch.splitterStop(); B~mj 8l4 :s,Z<^5a)g W_=f'yb:E } Qrv<lE1V; } 1 zZlC#V //负责部分文件的抓取 ks tIgcI
**FileSplitterFetch.java ?< />Z) */ 3Vwh|1? package NetFox; x2EUr,7 F
[M,]? K9[UB import java.io.*; siaG'%@*r import java.net.*; Gt1U!dP PCvWS.{ !if public class FileSplitterFetch extends Thread { _$'ashF /z!%d%" }C:r9?T String sURL; //File URL E./2jCwI(Y long nStartPos; //File Snippet Start Position :/#rZPPF long nEndPos; //File Snippet End Position > I?IPQB
int nThreadID; //Thread's ID 8}[).d160 boolean bDownOver = false; //Downing is over
XX@ZQcN boolean bStop = false; //Stop identical T%Lx%Qn FileAccessI fileAccessI = null; //File Access interface _#niyW+?~ do%&m]#; IPk4
;, public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException .H|-_~Yx| { *|0 -~u%q this.sURL = sURL; j.Hf/vi`z this.nStartPos = nStart; +0&/g&a\R this.nEndPos = nEnd; "[k3kAm nThreadID = id; #R"*c
hLV fileAccessI = new FileAccessI(sName,nStartPos);//定位 p ?!/+ } xAr\gu 8mMQ[#0:} 3mgD(,(^ public void run() =&]L00u. { H)?z
#x while(nStartPos < nEndPos && !bStop) h\o.&6sd { j^'go&p 8Wx=p#_ %;_MGae try{ %{|p j
+ URL url = new URL(sURL); \<' ?8ri# HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); DF= *_,2/ httpConnection.setRequestProperty("User-Agent","NetFox"); CY1Z' String sProperty = "bytes="+nStartPos+"-"; +R &gqja httpConnection.setRequestProperty("RANGE",sProperty); -~1~I
e2 Utility.log(sProperty); (e~N q | (93gJ vQCy\Gi InputStream input = httpConnection.getInputStream(); }j%5t ~Qa //logResponseHead(httpConnection); XZ7Lk)IR " x-j~u? TDh5lI
byte[] b = new byte[1024]; N['.BN int nRead; tA;}h7/Lc~ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 0;k# *#w { 3n _htgcv nStartPos += fileAccessI.write(b,0,nRead); siI;"? //if(nThreadID == 1) {.yB'.k? // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); WcAkCH!L } *pq\MiD/ QV!up^Zso N)T}P\l Utility.log("Thread " + nThreadID + " is over!"); ]esC[r]PJ bDownOver = true; ^sw?gH* //nPos = fileAccessI.write (b,0,nRead); EwN}l } :>
'+"M2r catch(Exception e){e.printStackTrace ();} d-qUtgqV86 } l**X^+=$ } dH!*!r> 6Oq7#3] w{KavU5W //打印回应的头信息 ]G\}k public void logResponseHead(HttpURLConnection con) AH^/V}9H { w<#!h6Y= for(int i=1;;i++) +[VXs~I
q { Psf#c:*_) String header=con.getHeaderFieldKey(i); kmW4:EA% if(header!=null) J5qZFD //responseHeaders.put(header,httpConnection.getHeaderField(header)); s[jTP(d)8 Utility.log(header+" : "+con.getHeaderField(header)); K0~rN.C!0 else ?4 ,T}@P break; 1?}T=)3+$ } DQ3<$0 } dN q$} h{Y",7]! N7"W{"3D public void splitterStop() .Mbz3;i0 { &d!GImcxQ bStop = true; *@5 @,=d } 9;{CIMg& as|<}:V qX%_uOw:% } 1zv'.uu., :;}P*T*PU ?}oFg#m-<L /* `?]k{ l1R **FileAccess.java 9{l}bu/u *//文件访问(定位,写) dPlV>IM$z package NetFox; T)/eeZ$ import java.io.*; FPz9N@M%Q o/E >f_k[ oR'm2d ^ public class FileAccessI implements Serializable{ afVT~Sf{ +(Ae4{z"1+ //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 /v{I RandomAccessFile oSavedFile; )nkY_'BV long nPos; 4(+PD&_J y(#e}z: Et$2Y-L. public FileAccessI() throws IOException ^8WRqQdx { t.<i:#rj>l this("",0); |Cv!,]9:r } (.:e,l{U% ah "o~Cbj /uc>@!F public FileAccessI(String sName,long nPos) throws IOException I7onX,U+ { ="+#W6bZT oSavedFile = new RandomAccessFile(sName,"rw"); z/-=%g >HA this.nPos = nPos; d]9z@Pd oSavedFile.seek(nPos); 2/?|&[ } ch]IzdD #a#F,ZT }jXfb@`K public synchronized int write(byte[] b,int nStart,int nLen) O-wzz { -7ep{p- int n = -1; sJZiI}Xc try{ >4TO=i oSavedFile.write(b,nStart,nLen); i-1op> Y n = nLen; `5*}p#G } sHj/; catch(IOException e) 3o*YzwRt { -).C e.printStackTrace (); )0`C@um } 81F9uM0 vM={V$D& e\rp)[>' return n; Rq -ZL{LR7 } ]Wup/o b%+Xy8a zLQx%Yg! } 0GL M(JmK tQVVhXQ7 5P bW[ /* kh<2BOV **SiteInfoBean.java h[ ZN+M */ ?6!LL5a. package NetFox; u8^lB7!e/ 6Wn1{v0 Iu{V,U public class SiteInfoBean { gYj'(jB %b0*H_ok7 ZSw.U:ep$s private String sSiteURL; //Site's URL U$g?!Yl0 private String sFilePath; //Saved File's Path Ri'n private String sFileName; //Saved File's Name l;U?Z'n private int nSplitter; //Count of Splited Downloading File lZ0 =;I `cO:<^% xw%0>K[ public SiteInfoBean() x-c"%Z| {//nSplitter的缺省值为5 d9ihhqq3} //default value of nSplitter is 5 -Za/p@gM this("","","",5); PF2nLb2- } yZ:qU({KhD L];b<*d hZ3bVi)L\ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) #$vEGY}1 { G3]4A&h9v~ sSiteURL= sURL; DI vHvFss sFilePath = sPath; J,G
lIv.A sFileName = sName; GILfbNcd this.nSplitter = nSpiltter; X]=t> `/g
UV VQI3G } ]_Xlq_[/r E]6
6]+;0_ ]Dzlp7Y} public String getSSiteURL() zT/\Cj68 { l2d{ 73h return sSiteURL; +(*DT9s+ } 'yth'[ BY*Q_Et h![#;>( public void setSSiteURL(String value) >7r!~+B"9' { \9d$@V sSiteURL = value; Qd6F H2Pl } +V+a4lU14 K^$=dLp H"KCK6 public String getSFilePath() 07)yG:q*x { +#By*;BJ return sFilePath; eQ"E } _U0f=m t
Pf40`@ jal-9NV)! public void setSFilePath(String value) H-%v3d>3 { YP9^Bp{0 sFilePath = value; ccnK#fn v } -+5>|N# fV:83|eQ X|[`P<'N< public String getSFileName() eq" ]%s { +{>=^9%X return sFileName; fatf*}eln } |' . Q^I\cAIB ,PZ ge public void setSFileName(String value) o.\oA6P_ { CNIsZv@Q sFileName = value; ~v83pu1!2s } <| &Npd' or]IZ2^n *qMY22X public int getNSplitter() iO[<1? { -![|}pX return nSplitter; _~pbqa,
} "mNq&$ X?$_Sd"G+5 QM]YJr3rE public void setNSplitter(int nCount)
FC*[* { oE~Bq/p nSplitter = nCount; X jX2] } VD :/PL } qFNes)_r CP{cAzHO bF(f*u /* M[uA@ **Utility.java &=Wlaa/,& */ LK"69Qx?5q package NetFox; eY\yE"3 MS]r:X6 gdoLyxQ public class Utility { `@
FYkH k'"%.7$U! MWL%
Bz public Utility() f9\X>zzB2| { g[t [/TV `g})|Gx )/EO&F } 'ah[(F<*@e )Beiu* //线程睡眠 ?rup/4| public static void sleep(int nSecond) 3&/Ixm: { ${)b[22": try{ #=v~8 Thread.sleep(nSecond); +U.I( 83F } 7!$^r$t catch(Exception e) -tNUMi' { !YJs]_Wr e.printStackTrace (); T n}s*<=V } |&[EZ+[ } @fV9
S"TcM 69 o7EA //日志 |a%Tp3Q~ public static void log(String sMsg) PzR[KUK { Z:7fV5b( System.err.println(sMsg); z"4~P3>{g } BX^tR1 sse.*75U $a%MOKr public static void log(int sMsg) M|[o aanY' { t. '!`5G System.err.println(sMsg); 0C*7K?/ }
EU/8=JA1 } kM@zyDn, zA"`!}* i2^>vYCsl /* {91nL'-' **TestMethod.java 0<B$#8 */ tdaL/rRe package NetFox; Lu0x
(/ F*K_+
?m |B2+{@R public class TestMethod { {GcO3G#FZ ~| 6[j<ziL %9RF public TestMethod() !#"zTj { ///xx/weblogic60b2_win.exe =4!e&o try{ C\/L v. SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5);
6B
?twh) //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); @Pzu^ SiteFileFetch fileFetch = new SiteFileFetch(bean); E=w1=,/y fileFetch.start(); 14'45 } .k
\@zQ|Ta catch(Exception e){e.printStackTrace ();} B !=F2 gOOPe5+ J Vl!6W@g } (NnH:J` t>B;w14 <kd1Nrr!p public static void main(String[] args) U~l$\c { '!a'ZjYyi new TestMethod(); d$AWu{y } 5-xX8-ElYz } E1U",CMU 点击下载更多相关资料
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