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/* $uEJn&n7} **SiteFileFetch.java }Vvsh3 */ pOqGAD{D$ package NetFox; .MDYGWKt import java.io.*; 7"ylN"syZ import java.net.*; jW-;4e*H=V AIuMX4nb cPpu public class SiteFileFetch extends Thread { 5cD
XWF
s1X]RXX&j 1s#yWQ SiteInfoBean siteInfoBean = null; //文件信息Bean Vh"MKJ'R^ long[] nStartPos; //开始位置 9o-!ecx} long[] nEndPos; //结束位置 28nmQ FileSplitterFetch[] fileSplitterFetch; //子线程对象 Gs[Vu@* long nFileLength; //文件长度 <jbj/Q )" boolean bFirst = true; //是否第一次取文件 Wgxn`6 boolean bStop = false; //停止标志 / Zo~1q File tmpFile; //文件下载的临时信息 z>4D~HX DataOutputStream output; //输出到文件的输出流 W8f`J2^"M <=q*N;=T, //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) puFXPw.3 public SiteFileFetch(SiteInfoBean bean) throws IOException j((hqJr { \Ut6; siteInfoBean = bean; 3c c1EQ9 //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 'UY[ap tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ]EB6+x!G if(tmpFile.exists ()) YecT 96% { ?qk@cKS bFirst = false; 7^ 4jcfJH read_nPos(); g[/^cJHQ } CV '&4oq else *"1~bPl { 9'1hjd3k nStartPos = new long[bean.getNSplitter()]; D9ANm"# nEndPos = new long[bean.getNSplitter()]; S8\+XJ } `SCy<w3$+[ (~S<EUc$ TbOJp [}z?1Gj;W( } 2=>*O e#tIk;9Xz egfi;8]E public void run() Osnyd+dJY { ya:sW5fk //获得文件长度 j5kA^MTG //分割文件 ^w>&?A'! //实例FileSplitterFetch Ig<}dM.Z[ //启动FileSplitterFetch线程 '<TD6jBs //等待子线程返回 9o EpPL5 try{ ]bIt@GB if(bFirst) brntE: { DL,[k
( nFileLength = getFileSize(); gW kjUz) if(nFileLength == -1) l{8CISO* { SaCx)8ul0 System.err.println("File Length is not known!"); bZiyapM } +4Q[N;[+* else if(nFileLength == -2) qYx!jA]O { B$ui:R/ t System.err.println("File is not access!"); pjACFVMFX } zt?h^zf} else (#oYyM] { 2xDQ:=ec for(int i=0;i<nStartPos.length;i++) d>&\V)E { -TgUyv. nStartPos = (long)(i*(nFileLength/nStartPos.length)); 'GkvUrD9D$ } <KtBv Ip] for(int i=0;i<nEndPos.length-1;i++) 5:c;RRn { +kM\
D~D1 nEndPos = nStartPos[i+1]; `4LJ;KC( } ;d4y{ nEndPos[nEndPos.length-1] = nFileLength; `qE4U4 } J;~E<_"Hn } GWgd8x*V OZ^h\m4 ?1CJf>B > //启动子线程 (v!mR+\x fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 0 sZwdO for(int i=0;i<nStartPos.length;i++) |) O): { D i+4Eb
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 0pD[7~ ^o siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), y`rL=N# nStartPos,nEndPos,i); $.a|ae|K Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 5C B%=iL{ fileSplitterFetch.start(); g92dw<$> } p'}lN|"{O // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), u#FXW_-TK siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); vevf[eO- // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 4f!dYo4L nEndPos = " + nFileLength); N+NK` // fileSplitterFetch[nPos.length-1].start(); BhLZ7 * 6GzzGP^ ojoxXly` //等待子线程结束 4`s)ue //int count = 0; `y2ljIWJ //是否结束while循环 \#++s&06 boolean breakWhile = false; &U&Zo@ot"x (xL
:; ailG./I+ while(!bStop) +#~O'r]%GG { j{)~QD ? write_nPos(); jB!W2~Z Utility.sleep(500); ZOu R"9] breakWhile = true; eQ<xp A &Pq\cNYzW HyEa_9
for(int i=0;i<nStartPos.length;i++) G?<pBMy { LJWTSf"f? if(!fileSplitterFetch.bDownOver) B7!;]'&d { frc{>u~t breakWhile = false; uf]Y^,2 break; VHW`NP 5Jl } ,E?4f
@|X } .fEwk if(breakWhile) Ukc'?p,* break; <(YF5Xm6$h IcFK,y%1 akC>s8tqlA //count++; )Oiev u_"| //if(count>4) b+Vi3V // siteStop(); \i0-o8q@I } A*F9\mjI5 E~RV1) Sph*1c(R System.err.println("文件下载结束!"); hM>*a!)U } = /Wu'gG) catch(Exception e){e.printStackTrace ();} VjB*{, } kwlC[G$j7 .!yq@Q|=u 4fty~0i=z //获得文件长度 DWrbp public long getFileSize() ]_u`EvEx6 { YBvd
q1 int nFileLength = -1; o@3B(j;J` try{ q5p e~ URL url = new URL(siteInfoBean.getSSiteURL()); ,dcg?48 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); eu9w|g httpConnection.setRequestProperty("User-Agent","NetFox"); X`1p'JD Q>=-ext}q *H"aOT^{ int responseCode=httpConnection.getResponseCode(); fK_~lGY( if(responseCode>=400) ;Iq5|rzDn { 6m+W#]^ processErrorCode(responseCode); [))JX"a return -2; //-2 represent access is error lR@& Z6lw } W2 <3C !
=WcF5 H)5QqZ8 String sHeader; ,QvYTJ{ F7T E|LZ TatMf;?h& for(int i=1;;i++) KO&:06V{ { H&bh<KPMh //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 7/"@yVBW //Utility.log(in.readLine()); yp+F<5o sHeader=httpConnection.getHeaderFieldKey(i); P}@*Z>j:# if(sHeader!=null) N09KVz2Q { =dGKF`tR if(sHeader.equals("Content-Length")) -:SIS`0s { El
(/em nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); PN
&|8_ break; azX`oU,l } $XGtS$ } 0T))>.iu# else <hv7s,i break; lFfXWNb } Dm%%e o } s.:r;%a catch(IOException e){e.printStackTrace ();} 2-mQt_
i catch(Exception e){e.printStackTrace ();} #
X/Q E[?kGR[ _{Y$o'*#I Utility.log(nFileLength); T3z(k
la yM ,VrUh _-%d9@x return nFileLength; jczq`yW } sRq U]i8l o56kp3b)b w$>3pQ8d //保存下载信息(文件指针位置)
jBpVxv private void write_nPos() 3cC }'j { /DO'IHC.o try{ Rla4L`X; output = new DataOutputStream(new FileOutputStream(tmpFile)); kcS6 _l output.writeInt(nStartPos.length); M<(u A' for(int i=0;i<nStartPos.length;i++) *jF#^= {
$Nu)E // output.writeLong(nPos); !O{z 3W output.writeLong(fileSplitterFetch.nStartPos); <HQ&-j x output.writeLong(fileSplitterFetch.nEndPos); R1'`F{56 } ?N>pZR output.close(); :;4SQN{2
O } yvxl_*Ds8 catch(IOException e){e.printStackTrace ();} A5XR3$5P catch(Exception e){e.printStackTrace ();} r1Z<:}ZwK } r)b<{u=] *]x_,:R6Ow a)S7}0|R //读取保存的下载信息(文件指针位置) O<GF> private void read_nPos() O
>FO> { 2-v\3voN try{ RH1uVdJ1 DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); YwAnqAg int nCount = input.readInt(); kon=il<@ nStartPos = new long[nCount]; p)/
p!d[T/ nEndPos = new long[nCount]; ' qy#)F for(int i=0;i<nStartPos.length;i++) 0x5xLg;Q { o.^y1mH' nStartPos = input.readLong(); bx>i6
R2 nEndPos = input.readLong(); \ e,?rH } DB@EVH input.close(); ]0/p 7N14 } ]MAT2$"le catch(IOException e){e.printStackTrace ();} A*'V+( catch(Exception e){e.printStackTrace ();} ;fGx;D } U)[ty@zyF Ro r2qDF LC-)'Z9}5 private void processErrorCode(int nErrorCode) R0<< f] { U:|H9+5 System.err.println("Error Code : " + nErrorCode); J&6:d } BXhWTGiG o~C('1Fdb ez*jjm //停止文件下载 iP "EA8 public void siteStop() (
v@jc8y { VJ{pN ~_1 bStop = true; n
)K6i7]xk for(int i=0;i<nStartPos.length;i++) \!H{Ks{#R. fileSplitterFetch.splitterStop(); &qRJceT( ~m`!;rE "l,UOv c } =!,Gst_ } 9;KJr[FQV //负责部分文件的抓取 .Z%G@X* **FileSplitterFetch.java >;nS8{2o */ 0H:dv:#WAI package NetFox; f=I:DkR ~O4|KY C5n?0I9 import java.io.*; ',mW`ZN import java.net.*; S()Za@ [a$ )|]Z>>%t )+Y&4Qu public class FileSplitterFetch extends Thread {
(ZPXdr 7ZFJexN] Z$;"8XUM String sURL; //File URL
{L0;{ long nStartPos; //File Snippet Start Position ^?"^Pmw
long nEndPos; //File Snippet End Position ;V.vfar int nThreadID; //Thread's ID r4;Bu<PQN1 boolean bDownOver = false; //Downing is over !T'X
'Q boolean bStop = false; //Stop identical 0"4@;e_)> FileAccessI fileAccessI = null; //File Access interface 7Dt"]o"+ ;NsO vWY(% Q, public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException cZQu *K^j { *gu8-7' this.sURL = sURL; m0( E kK this.nStartPos = nStart; #Lka+l;L7 this.nEndPos = nEnd; dr})-R nThreadID = id; o&-L0]i| fileAccessI = new FileAccessI(sName,nStartPos);//定位 40K2uT{cq } <NB41/ -(;LQDG | /EFq#+6 public void run() c8DZJSO { `ROEV~ while(nStartPos < nEndPos && !bStop) K.DXJ UR { WC-_+9)2& vJCf~' t ;-L{`mW try{ s AE9<(g&@ URL url = new URL(sURL); )=H{5&e#u HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ^M
Ey, httpConnection.setRequestProperty("User-Agent","NetFox"); ' G#SLqZy String sProperty = "bytes="+nStartPos+"-"; A=`*r* httpConnection.setRequestProperty("RANGE",sProperty); <qY5SV, Utility.log(sProperty); F?4Sz# ;^-:b(E xP@/9SM InputStream input = httpConnection.getInputStream(); r
nBOj#N //logResponseHead(httpConnection); >XE`h9 ,w`~K:b. CC8k&u, byte[] b = new byte[1024]; aRwnRii int nRead; f7+Cz>R while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) (9GbG" { ./w{L"E nStartPos += fileAccessI.write(b,0,nRead); Hj~O49%j& //if(nThreadID == 1) 9<cOYY // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); I;j3*lV_ } ^ d\SPZ E`AYee%l 3N<&u Utility.log("Thread " + nThreadID + " is over!"); }kPVtSQ bDownOver = true; 25em[Q:
//nPos = fileAccessI.write (b,0,nRead); 4lz{G*u } frH)_ YJ% catch(Exception e){e.printStackTrace ();} wk ikD } qrDcL>Hrn } `&g:d E(j 1xTTJyoq \A(5;ZnuD //打印回应的头信息 gaeOgP.0 public void logResponseHead(HttpURLConnection con) ,-
HIFbXx@ { +X^4;
& for(int i=1;;i++) MsjnRX:c3u { WK;(P4Z String header=con.getHeaderFieldKey(i); 4}-#mBV]/ if(header!=null) &jm[4'$
*z //responseHeaders.put(header,httpConnection.getHeaderField(header)); yXF|Sqv Utility.log(header+" : "+con.getHeaderField(header)); KO,_6>8]U else 295w.X(J break; 4VFc|g } OCW+?B; } Qp!J:YV o}~3JBnT yWHne~! public void splitterStop() X47O l { V2Y$yV8g1 bStop = true; mo9$NGM&} } ;0j*>fb\q7
cht 3h&bZ } K-4tdC3 !6E:5=L^ d@>\E/zA /* }ywi"k4> **FileAccess.java ,qy&|4Jz *//文件访问(定位,写) uaxB -PZ package NetFox; E@pFTvo import java.io.*; 1nB@zBQu- sqG`"O4W DHzkRCM public class FileAccessI implements Serializable{ kfCKhx EUZq$@uWL //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 bi,mM,N/ RandomAccessFile oSavedFile; l* Y[^' long nPos; |<Bpv{]P 0N VI+Z$ qGa<@ b public FileAccessI() throws IOException KjYDFrR4 { ,?y7,nb this("",0); }vD;DSz: } GP]TnQ<*; R3G@G rfTe public FileAccessI(String sName,long nPos) throws IOException XnY"oDg^> { o? dR\cxj oSavedFile = new RandomAccessFile(sName,"rw"); Wp4K6x this.nPos = nPos; & rQD `E/ oSavedFile.seek(nPos); |EeBSRAfe } wlVvxX3% s3< F .. UoyBV public synchronized int write(byte[] b,int nStart,int nLen) M=+M8M`Iy { 7jT}{
x int n = -1; hVZo"XUb try{ JUU&Z[6J oSavedFile.write(b,nStart,nLen); ohplj`X[21 n = nLen; 6Ahr_{ } 7TdQRB catch(IOException e) 6
[ _fD { G>0)I e.printStackTrace (); KpGUq0d@ } 8^T2^gs UoRDeYQ`E -<d(
return n; i;]CL[#2e` } {Zwf.., B^m!t7/, .C?GW1[c~@ } uk6g s)qxC $WClpvVj -t>Z
9 /* M8_ R **SiteInfoBean.java hr1$1&p */ R8uj3!3^ package NetFox; `WlH*p)z9 kF2Qv.5! j"6:A public class SiteInfoBean { Gc^t%Ue-H)
G1p'p&x. ]b)!YPo private String sSiteURL; //Site's URL DO%Pwfkd private String sFilePath; //Saved File's Path tj0Qr-/ private String sFileName; //Saved File's Name Y"oDFo, private int nSplitter; //Count of Splited Downloading File U/5$%0) K=o:V& AZBC P public SiteInfoBean() OA5f} + {//nSplitter的缺省值为5 %-r?=L //default value of nSplitter is 5 XLocg this("","","",5); ^k;mn-0 } 1b+h>.gWar b-4dsz'ai \*J.\f public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 1x;@~yU { 1=>2uYKR sSiteURL= sURL; Qpw@MF2P sFilePath = sPath; 22'vm~2E sFileName = sName; &L'6KEahR this.nSplitter = nSpiltter; 6Wb!J>93 _[%n ~6 nUqL\(UuY } ?cJA^W ]7l{g9?ZtV (QKsB3X public String getSSiteURL() SlN" (nq { ,@479ZvvR3 return sSiteURL; T,Fm"U6[( } `OBl:e fOLnK
y# W
W35&mI)k public void setSSiteURL(String value) F#KF6)P { }Q;BQ2[ sSiteURL = value; G}q<{<+$ } q55M8B 4w yH+c#w }EP|Mb public String getSFilePath() I<KCt2:X { ovSH}h! return sFilePath; @x*.5:[ } df yrn%^Ia _}^u-fJ/~ 3jS7 uU public void setSFilePath(String value) &rcdr+' { ~9bv Wd1D sFilePath = value; 2=O))^8 } {F/q{c~] \ JG
#m <ipWMZae0F public String getSFileName() 9LHa&"" { d&?F#$> 7| return sFileName; \D ^7Z97 } moe/cO5a9 N|o>%)R ;)P5#S!n- public void setSFileName(String value) =CE HRny { JC/d:. sFileName = value; !L/tLHk+ } y{?Kao7Ij N?zV*ngBS @??u})^EL public int getNSplitter() OFp#<o,p { $8=(I2&TW return nSplitter; my]P_mE } hj+p`e S :Fc8S9 wzg i
@i public void setNSplitter(int nCount) K` 2i { 16L"^EYq nSplitter = nCount; Vl-D<M+ih } ;tm3B2 } zWJKYF qK ~PCTLP~zI 2nJYS2mT7 /* x~%\y **Utility.java &hO$4q tN */ 0:jsV|5B8 package NetFox; =I7[L{+~Y ? 1GJa]G TX&[;jsj public class Utility { sFCf\y K[n<+e;G \Ec
X!aC public Utility() |I(%7K { X"wFQa vu44 !c@ 1T:)Zv' } ?l(nM+[kSL z"9aAytd //线程睡眠 1]HHe*'Z public static void sleep(int nSecond) Un]DFu { 6<#Slw[ try{ V, E9Uds Thread.sleep(nSecond); *Gf&q } =Z^un&' catch(Exception e) )eVzS j>MT { zI(xSX@ e.printStackTrace (); 5[1@`6j } ixg\[5.Q+ } vs*>onCf *13g<#$ //日志 u4@, *tT public static void log(String sMsg) .[#xQ=9` { K6ciqwUO System.err.println(sMsg); YcPKM@xo } -?[O"D"c Tq.MubaO $ V3n~.= public static void log(int sMsg) y/z9Ce*> { p!C_:Z5i System.err.println(sMsg); xP XoJN } {`($Q$Q1 } QziN] Y!bpOa& g9M')8a n /*
b$PT_!d **TestMethod.java C3]\$ */ K<D`(voL package NetFox; lp?i_p/z 8.:B=A !Jk(&. public class TestMethod { MiRibHXI, fLLnf].O y?[5jL|Ue public TestMethod() pM1=UF { ///xx/weblogic60b2_win.exe od;Bb try{ d&O'r[S SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); #($k 3OA //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); oXnC"y}0P SiteFileFetch fileFetch = new SiteFileFetch(bean); 3| GNi~ fileFetch.start(); ,w,ENU0~f } ^qE<yn catch(Exception e){e.printStackTrace ();} '#;,oX~5 [Od>NO,n+] 38Bnf } 4x=V|" Pn~pej5'K p7%0hLW public static void main(String[] args) nh _DEPMq { Ry3+/] new TestMethod(); ORUWslMt } Bu*W1w\ } a7ub.9> 点击下载更多相关资料
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