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/* LA3,e (e **SiteFileFetch.java Z@Z`8M@Q, */ .=<pU k 3G package NetFox; T7X2$ ' import java.io.*; u01^ABn import java.net.*; U9%nku4 /R?uxhV :H k4i%hGk public class SiteFileFetch extends Thread { 2Nzcej 1e%Xyqb Vi~+C@96 SiteInfoBean siteInfoBean = null; //文件信息Bean MH(g<4>* long[] nStartPos; //开始位置 Y&%0 eI! long[] nEndPos; //结束位置 UYLI>XSd FileSplitterFetch[] fileSplitterFetch; //子线程对象 dXN&<Q, long nFileLength; //文件长度 ?XrTZ{5' boolean bFirst = true; //是否第一次取文件 {x$#5PW boolean bStop = false; //停止标志 6XqO'G File tmpFile; //文件下载的临时信息 JH,+F DataOutputStream output; //输出到文件的输出流 T0C'$1T ,o6: V]a //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 7hE=+V8 public SiteFileFetch(SiteInfoBean bean) throws IOException H*<dte< { U}TQXYAg siteInfoBean = bean; wYM{x!D //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); J~6*d,Ry` tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); :36^^Wm if(tmpFile.exists ()) <o`]wOrl { N_}Im>;! bFirst = false; !I$RE?7eY read_nPos(); ~|]\.^B } wN.Jyb else Ee| y[y, { 1z!Lk*C) nStartPos = new long[bean.getNSplitter()]; %8}w!2D S nEndPos = new long[bean.getNSplitter()]; :RG6gvz } $9$NX/P gW%(_H mX a2n#T,kq& 6n g9 o6 } ,\"gN5[$( /d;l: =-Tetp public void run() n\,W:G9AR7 { X ^)5O>>|t //获得文件长度 ,bg#pG!x Q //分割文件 oZw#Nd //实例FileSplitterFetch -': tpJk //启动FileSplitterFetch线程 QJ'C?hn //等待子线程返回 -hfY:W`Dz try{ NyNu1V$ if(bFirst) $x0F(|wxt { {%dQV#'c nFileLength = getFileSize(); "=O)2} if(nFileLength == -1) }R(_^@] { YzVLa,[ System.err.println("File Length is not known!"); S d -+a } *8+YR else if(nFileLength == -2) ru
Lcu] { }Qo8Xps System.err.println("File is not access!"); b?,y%D)' } AG%aH=TKp else /qr8 { =$J2 for(int i=0;i<nStartPos.length;i++) H|?`n
uiD { P@ u%{ nStartPos = (long)(i*(nFileLength/nStartPos.length)); NmXTk+,L# } oyY,uB.| for(int i=0;i<nEndPos.length-1;i++) s:{%1 / { *a4eL [ nEndPos = nStartPos[i+1]; U^I'X7`r } C7:Ry)8'I nEndPos[nEndPos.length-1] = nFileLength; 0>Nq$/! } iddT. } $cedO'] 75ob1h" 1:8: yFV //启动子线程 9IMcp~zX fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; e)8iPu .. for(int i=0;i<nStartPos.length;i++) bv0 %{u& { I
Cs1= fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), vhW'2<( siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ?*0kQo' nStartPos,nEndPos,i); 7y3; F7V Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); *!kg@ _0K fileSplitterFetch.start(); sa($3`d } hJM0A3(Cm // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ,#6\:i siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); /zM7G?y // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", <R$|J| nEndPos = " + nFileLength); >F
v8 - // fileSplitterFetch[nPos.length-1].start(); AseY.0 !ywc). ]e #SmWF|/ //等待子线程结束 |SmN.*&(9 //int count = 0; U ;/ )V //是否结束while循环 /r6DPR0\ boolean breakWhile = false; D.~t#a A *W
l{2& Pa*yo:U'h while(!bStop) `y(3:##p { $Z4p$o
dk write_nPos(); hkY E7 Utility.sleep(500); Fu$otMw%l breakWhile = true; A
[JV*Dt qA42f83 `:&{/|uP7 for(int i=0;i<nStartPos.length;i++) YH9BJ { KK}&4^q if(!fileSplitterFetch.bDownOver) B5hGzplS { bPEAG=l "- breakWhile = false; Fei$94a break; ,>Q,0bVhH0 } 5sH ee, } %9K@`v- if(breakWhile) $uqlJG#` break; 2= _.K( #"|Ey6& cVMTT]cj1 //count++; 3
V<8 //if(count>4) jB;+tDC!Co // siteStop(); %AFy{l } bYz:gbs]4| 7%tn+ &fcRVku System.err.println("文件下载结束!"); Nb6HM~ } W*0KAC`m catch(Exception e){e.printStackTrace ();} {!w]t?h } l6~eb=u;9g p5*Y&aKj $FoNEr&q //获得文件长度 9"rATgN1 public long getFileSize() px*MOHq K { l[xwH 9' int nFileLength = -1; 5R4 dN=L*1 try{ 9M6&+1XE URL url = new URL(siteInfoBean.getSSiteURL()); 8447hb?W$ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); @RC_Ie=#) httpConnection.setRequestProperty("User-Agent","NetFox"); A U](pXK; LakP'P6`E @RjLDj+)S int responseCode=httpConnection.getResponseCode(); v{9eEk1 if(responseCode>=400) })" : F { c09 uCito processErrorCode(responseCode); `7LdF,OdE return -2; //-2 represent access is error q&vr;fB2 } j<c_*^/'9 TM+7>a$ 8L#sg^1V String sHeader; D`ZYF)[}J r`=d4dK- mVxS[Gq for(int i=1;;i++) @M1U)JoQ { f-Sb:O!V //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 5b&'gd^d //Utility.log(in.readLine()); 30<^0J.1 sHeader=httpConnection.getHeaderFieldKey(i); bV"0}|A~K if(sHeader!=null) :KQ<rLd { uwbj`lpf if(sHeader.equals("Content-Length")) oyUf/Sl { 6|zA,-= nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 0P|WoCX break; X/Ae-1! } :G!Kaa,r } lHx$F? else ]!/1qF break; (qaY,>je]D } G B15 } j9Lc2' catch(IOException e){e.printStackTrace ();} n7S[ F3 catch(Exception e){e.printStackTrace ();} 3V-pLs| $I_aHhKt 0j*8|{| Utility.log(nFileLength); WPPmh~: g;-CAd5 H]SnM'Y return nFileLength; Agl[Z>Q } zEu*q7 =KX:&GU NK#f Gz*,( //保存下载信息(文件指针位置) k?_Miqr private void write_nPos() hE>Mo$Q( { |[*b[O
1W try{ B$fL);l- output = new DataOutputStream(new FileOutputStream(tmpFile)); 1e}wDMU( output.writeInt(nStartPos.length); #{0c01JZ for(int i=0;i<nStartPos.length;i++) RJ0w3T]7 { wqw$6"~ // output.writeLong(nPos); 5@i/4%S output.writeLong(fileSplitterFetch.nStartPos); %zWtPxAf output.writeLong(fileSplitterFetch.nEndPos); rwU[dqBRhc } =!Ok079{[ output.close(); U5" C"+
3 } /
JlUqC catch(IOException e){e.printStackTrace ();} I(C_}I>Wb catch(Exception e){e.printStackTrace ();} LNe-]3wB } !dZC-U~ N/Z<v* i" g4Tc (k# //读取保存的下载信息(文件指针位置) +YP,LDJ!v private void read_nPos() NO'-HKHj { [~x
Ql try{ ,<%],-Lt[ DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); O<fbO7.- int nCount = input.readInt(); 9'}m797I' nStartPos = new long[nCount]; q$K^E nEndPos = new long[nCount]; PQ1\b-I for(int i=0;i<nStartPos.length;i++) xK
/NzVt { D{c`H}/` nStartPos = input.readLong(); ibEQ5 2 nEndPos = input.readLong(); q")}vN } }E*#VA0/nY input.close(); I"r*p? } uA,K}sNRZ catch(IOException e){e.printStackTrace ();} dqcfs/XhP catch(Exception e){e.printStackTrace ();} s@0#w*N } Qd$d*mwg: PX+$Us z1s9[5 private void processErrorCode(int nErrorCode) x#U?~6.6 { WG9x_X&XJ System.err.println("Error Code : " + nErrorCode); B+,Z 3* } 41$7P[M; [9X1;bO#f mim]nRd2v //停止文件下载 iB{O"l@w
public void siteStop() i,,U D { nXXyX[c4e bStop = true; Y*J,9 for(int i=0;i<nStartPos.length;i++) ,myl9s fileSplitterFetch.splitterStop(); \=1k29O =Bl#CE)X H~fZA)W 4Y } 5X'[{'i, } #k*e>d$ //负责部分文件的抓取 fZ$8PMZv **FileSplitterFetch.java ;4%^4<+3 */ Sa6}xe."M, package NetFox; jrG@
+" } IX$ $pdQ 't2"CPZ import java.io.*; klv ]+F&[ import java.net.*; //g~1( Vc}m_T]O CKyX Z public class FileSplitterFetch extends Thread { )~s(7
4`} os"o0? L=?Yc*vg String sURL; //File URL }m(u oT~ long nStartPos; //File Snippet Start Position &*r YY\I long nEndPos; //File Snippet End Position &?v^xAr?B int nThreadID; //Thread's ID +!CG'qyN> boolean bDownOver = false; //Downing is over c[f boolean bStop = false; //Stop identical EX=Q(} 9F< FileAccessI fileAccessI = null; //File Access interface u9_ Fjm}& UJ2Tj+ g#W )EXUR public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException v~9PS2 { >}Za) this.sURL = sURL; ZF>zzi+@ this.nStartPos = nStart; |s+y]3-_ this.nEndPos = nEnd; C&D!TR!K nThreadID = id; RKx"
}<#+ fileAccessI = new FileAccessI(sName,nStartPos);//定位 YOd0dKe } Yc&yv }]'Z~5T Quqts(Q) + public void run() C5$1K'X@ { i.C+{QH while(nStartPos < nEndPos && !bStop) ULNU'6 { ^/U-(4O05* 9m/v^ r1}YN<+,s try{ W^Wr URL url = new URL(sURL); =bi:<%" HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); g kT`C httpConnection.setRequestProperty("User-Agent","NetFox"); cR*D)'/tl String sProperty = "bytes="+nStartPos+"-"; ~K 5eO- httpConnection.setRequestProperty("RANGE",sProperty); X3P~z8_ Utility.log(sProperty); 1.6yi];6 WnyEdYA RQ;pAO InputStream input = httpConnection.getInputStream(); KC[ql}JP //logResponseHead(httpConnection); D37N*9} f![?og)I% TmxhP
nJ~ byte[] b = new byte[1024];
qH1[BsOx int nRead; 4$oNh)+/h while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 40w,:$ { N7v7b<6 nStartPos += fileAccessI.write(b,0,nRead); ZEYT17g] //if(nThreadID == 1) &!SdO<agZ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); p8aGM-+40W } <%Zg;]2H` _Ryt|# y c|.~f+ Utility.log("Thread " + nThreadID + " is over!"); -~n^?0 bDownOver = true; *<c, x8\s9 //nPos = fileAccessI.write (b,0,nRead); 0Ihp`QGU: } [+\=x[q catch(Exception e){e.printStackTrace ();} 6vAq&Y{JB' } *](maF~%C } '[Ap/:/UY .7 6T<j_ roSdcQTeT //打印回应的头信息 3#<b!Yz public void logResponseHead(HttpURLConnection con) A)/8j2 { b{%p for(int i=1;;i++) .fY1?$*6c { [#hpWNez(> String header=con.getHeaderFieldKey(i); "%ou'\} if(header!=null) 2.)xWCG //responseHeaders.put(header,httpConnection.getHeaderField(header)); c5C 2xE}T Utility.log(header+" : "+con.getHeaderField(header)); 094~ s else WT;4J<O/ break; .0+=#G> } :Aj8u\3!@ } GrPKJ~{6
ieo Naq lQ(I/[qVd public void splitterStop() -5B>2K F { (cAWT, bStop = true; =;Ap+} } s&&8~
)H 5-qk"@E W v<CZ.-r\j } &B?TX. 3>asl54 O=m_P}K /* v%a)nv **FileAccess.java utOATjB.z *//文件访问(定位,写) *9Ta0e* package NetFox; w{TZN{Y import java.io.*; {x_SnZz & #@%DY*w]v sT8(f=^)8F public class FileAccessI implements Serializable{ 9BR/zQ2 R. :~e //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 $.HZz RandomAccessFile oSavedFile; ,'!x9 ` long nPos; Rn?Yz^
1q 3lr9nBR u*}[fQ`aF public FileAccessI() throws IOException ]6s7?07m4 { 8.JFQ/)i this("",0); $[(amj-;l } y950Q%B] W3Gg<!*Uo zy8Z68%E`* public FileAccessI(String sName,long nPos) throws IOException Dnk} { b-!+Q) oSavedFile = new RandomAccessFile(sName,"rw"); _UP=zW this.nPos = nPos; c+S<U* oSavedFile.seek(nPos); J)o.@+Q} } :)JIKP%$\) C?dQ
QB$ Odn`q= public synchronized int write(byte[] b,int nStart,int nLen) )T0%<(J { ~V34j: int n = -1; _L8|ZV./ try{ "2'4b oSavedFile.write(b,nStart,nLen); IhR;YM[K n = nLen; pzr\<U` } '0b!lVe catch(IOException e) n <,:;0{ { Sjb[v e.printStackTrace (); vC#_PI } fl@=h[g#t x)}.@\&% &JUHm_wd&S return n; fI<|]c}P&J } <b.O^_zQF yj$a0Rgkv o,NTIh } ccR#<Pb6q s8:-*VR9 P55QE+B /* [k~}Fe)x **SiteInfoBean.java ;bYS#Bid{V */ qQN|\u+co package NetFox; %m/W4Nk }R&5Ye -tPia=^ public class SiteInfoBean { p[LPi5 VZz>)Kz: 2K:Rrn/cR private String sSiteURL; //Site's URL 6[x6:{^J private String sFilePath; //Saved File's Path ]&b>P ;j: private String sFileName; //Saved File's Name u=QG%O#B private int nSplitter; //Count of Splited Downloading File tRtoA5 C}'Tmi {D{'
\]+ public SiteInfoBean() 18eB\4NlD {//nSplitter的缺省值为5 9B)<7JJX!J //default value of nSplitter is 5 0 k(su
this("","","",5); 'G)UIjl } QJ4=*tX) ztEM>xsk _8 C:Md` public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) {,X}Btnwp { F[@M? sSiteURL= sURL; )lhPl sFilePath = sPath; #@UzOQ> sFileName = sName; aam6R/4 this.nSplitter = nSpiltter; S"<"e\\}"_ ?9Hs,J 1 !8
b9 } X~2L b#
| gm8FmjZtf public String getSSiteURL() <$>Jsv { Bj`ZH~T return sSiteURL; F1A7l"X] } CT0 ~ a%YohfsY?U lKSd]:3Xm public void setSSiteURL(String value) S_ER^Pkg {
}K.2 sSiteURL = value; 59MpHkr } #?_8 *? V44M=c7E DG-XX.:z public String getSFilePath() ]jRaR~[UN { HU1ZQkf return sFilePath; bu:%"l } `JAM]qB" X/qLg+X TgjM@ir public void setSFilePath(String value) y#iQ { uGz>AW8a3 sFilePath = value; vuoD~ =z } .|g|X8X s&)>gE\ i_{b*o_an public String getSFileName() j3 Ps<<eA { E[a|.lnV return sFileName; G~X93J } _I/uW|> [XbNZ6 %8c2d public void setSFileName(String value) M"\j7( { f=--$o0U~ sFileName = value;
#V-0-n,` } B,(zp#&yB S{fFpe- c( 8>|^M public int getNSplitter() ?}ly`Js { "CY#_) return nSplitter; Wi2Tg^ } > }fw7 X Bm$(4 _^MkC}8 public void setNSplitter(int nCount) x_oiPu.V { ?B['8ju nSplitter = nCount; lN~V1(1B } $'%.w|MJp } 7GDrH/yK jnIf(a %f1>cO9[ /* .H#<yPty **Utility.java UAEu.AT */ UlQS]f~ package NetFox; tDQuimYu7 ]9PQKC2& Me2qOc^Z- public class Utility { sL!+&Id| ',bSJ4)Y zPc kM) public Utility() | IB4-p { P}~nL
f >$V:e([
/Bs42uJ3 } EWC{896, uA;vW\fHr //线程睡眠 C8W4~~1S public static void sleep(int nSecond) 9D[Jn}E: { /8Ru O try{ 0BrAgv"3a_ Thread.sleep(nSecond); $_f"NE} } 3%L@=q catch(Exception e) ><wYk)0E { O6"S=o& e.printStackTrace (); 6%a:^f] } @8eQ|.q]Q } *?3c2Jg=E Ku`u%5< //日志 $(fhO public static void log(String sMsg) .K`EflN { wCgi@\ System.err.println(sMsg); Ohn?>qQ } d;hv_h s2`Qh9R
H&SoVi_V public static void log(int sMsg) o2rL&
{ S!8gy,7<J System.err.println(sMsg); G$A=T u~ } 0sfb$3y } zVvL! *ry}T= -gB9476- /* vHXCT?FuG **TestMethod.java
8/s?Gz */ _b"K,[0o package NetFox; `6xr:s <7
xX/Z}M "[dfb#0z` public class TestMethod { O9ar|8y ^m['VK#? ''Hx& public TestMethod() /Ref54 { ///xx/weblogic60b2_win.exe N|e#& try{ ?/q\S SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); '!<gPAVTzV //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); W <u,S SiteFileFetch fileFetch = new SiteFileFetch(bean); CB^.N>' fileFetch.start(); xi[\2g+ } )F_nK f"a catch(Exception e){e.printStackTrace ();} 2rxz<ck( &4{!5r ~@$RX:p } K$KVm^` \:4SN&I~ D{rM public static void main(String[] args) \l1==,wk { 1ne3CA= new TestMethod(); tID=I0D } "\+.S]~ } 6d(D>a 点击下载更多相关资料
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