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/* &?3?8Q\ **SiteFileFetch.java V|NWJ7 */ 9/w'4bd package NetFox; ,eRl
Z3T import java.io.*; =K2Dxu_: import java.net.*; v8Nc quv S=lA^#'UdX =y7]9SOq public class SiteFileFetch extends Thread { #&">x7?5 B$7m@|p! =ox#qg.5 SiteInfoBean siteInfoBean = null; //文件信息Bean bIizh8d? long[] nStartPos; //开始位置 #;juZ*I long[] nEndPos; //结束位置 32:,g4!~6 FileSplitterFetch[] fileSplitterFetch; //子线程对象 bWv6gOPR3 long nFileLength; //文件长度 qce# boolean bFirst = true; //是否第一次取文件 $XFG1?L! boolean bStop = false; //停止标志 `<t{NJ&f File tmpFile; //文件下载的临时信息 [p@NzS/ DataOutputStream output; //输出到文件的输出流 }eb%"ZH4| ;-=y}DK //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) MCQ>BP public SiteFileFetch(SiteInfoBean bean) throws IOException ?9X#{p>q { ^iubqtT] siteInfoBean = bean; U=XaI%ZM) //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); !gy'_Y tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 5 LX3. if(tmpFile.exists ()) Yx&cnDx { q30WUO; bFirst = false; 8<P $E! read_nPos(); O(
he } joDfvY*[ else T9Vyj3!i_ { G !1- 20 nStartPos = new long[bean.getNSplitter()]; dGIu0\J\$ nEndPos = new long[bean.getNSplitter()]; /N%f78
Z } j)-D.bY0 . F#mT h JIb<>X, 1>%SSQ } T|.Q81.NE ? |8&!F ";s5It
public void run() .?I!/;=[ { 3jS= //获得文件长度 k|A!5A2 //分割文件 18[f_0@ # //实例FileSplitterFetch XOqpys //启动FileSplitterFetch线程 Od&M^;BQ //等待子线程返回 lR.a3.~ try{ a+{g~/z;,Q if(bFirst) d`~#uN { { e_1mO 5z nFileLength = getFileSize(); v9inBBC q if(nFileLength == -1) qh7o;x~, { sx]?^KR: System.err.println("File Length is not known!"); nrt0[E-&~ } yN>"r2 else if(nFileLength == -2) w|L~+
{ #eUfwd6.Y System.err.println("File is not access!"); 2M&4]d } J`RNik*> else %+I(S`} { =fsaJ@q,R for(int i=0;i<nStartPos.length;i++) _23sIUN c3 { "L8V!M_e nStartPos = (long)(i*(nFileLength/nStartPos.length)); v,D_^?] @ } (Wx)YI for(int i=0;i<nEndPos.length-1;i++) mlVv3mVyR< { ]UgAz nEndPos = nStartPos[i+1]; }MIH{CMH } VBH[aIW nEndPos[nEndPos.length-1] = nFileLength; ~HYP:6f } .\d0lJSr } QIV<!SO 1)YFEU&] rmabm\QY //启动子线程 <`r+l5 fileSplitterFetch = new FileSplitterFetch[nStartPos.length];
9Np0<e3p for(int i=0;i<nStartPos.length;i++) :?UIyN? { J,D{dYLDD fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 9~; Ju^b siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), iit`'}+U nStartPos,nEndPos,i); (Dl"s`UH~ Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); z5vryhX_Z fileSplitterFetch.start(); Hug{9Hr3. } qXhrK
/ // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), e{}o:r siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); c|.:J] // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", (mD]}{> nEndPos = " + nFileLength); rL
s6MY // fileSplitterFetch[nPos.length-1].start(); A;|DQR() E, v1F! 7 %|>7 //等待子线程结束 ZF
t^q/pw //int count = 0; X<QE]RZ //是否结束while循环 z8!u6odu % boolean breakWhile = false; B.G!7>= +,-rb R:xmcUq}
( while(!bStop) QVH_B+
Q { 6wd]X-G++ write_nPos(); 4bBxZY Utility.sleep(500); Y{yr-E #~M breakWhile = true; m2! 7M%]GC sWC"^ S o 6,)y{/ENC for(int i=0;i<nStartPos.length;i++) c[y8"M5 { %OtW\T=u if(!fileSplitterFetch.bDownOver) m#ie{u^ { :kVV.a#g breakWhile = false; A;!FtD/
break; %aKkk)s } 5ZcnZlOOQ } y|dXxd9 if(breakWhile) UBVb#FNF break; _UBI,Dg] >gZz`CH p~.@8r( //count++; PsgzDhRv //if(count>4) ~ YK<T+ // siteStop(); [:QMnJ } ?R(3O1,v^ Tpukz_F injmP9ed System.err.println("文件下载结束!"); )^\='(s } #$w#"Nr9k catch(Exception e){e.printStackTrace ();} kOCxIJ!Xp= } wuzz%9;@B \uk #pL ?6QJP|kE //获得文件长度 O i0;.<kX public long getFileSize() IR
LPUP { `X='g96C1 int nFileLength = -1; 0 MIMs# try{ B@]7eVo URL url = new URL(siteInfoBean.getSSiteURL()); m-8 9nOls HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); &-fx=gq= httpConnection.setRequestProperty("User-Agent","NetFox"); 9oP{Al H/k W
:k @vYmkF` int responseCode=httpConnection.getResponseCode(); ~TH5>``;gF if(responseCode>=400) Qu,k { z#VpS= processErrorCode(responseCode); 9|?Lz return -2; //-2 represent access is error &=Zg0Q } =
Y-Ne6a ZZU 8B?) 5j,qAay9 String sHeader; cN7z(I0[ U"+ ry.3` 4nH91Z9= for(int i=1;;i++) 5%+}rSn7 { 8 tygs //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); B bw1k //Utility.log(in.readLine()); NNwd;AC sHeader=httpConnection.getHeaderFieldKey(i); Kk>qgi$ if(sHeader!=null) I#X2UQzP { )v=G}j^ if(sHeader.equals("Content-Length")) 4E-A@FR { $p3Wjf:bH nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); fq'Xy9L break; g]<Z]R` } KVM@//:{ } "&#WMi else %lJiM`a break; D}/=\J/ } Ws*PMK.0 } Rca
Os catch(IOException e){e.printStackTrace ();} ]cqZ!4?_ catch(Exception e){e.printStackTrace ();} g1wI/ o9LD6$ U`9\P2D`/ Utility.log(nFileLength); ]jVSsSv '?G[T28 LAY)">*49H return nFileLength; Z!-<rajl } )fMX!#KP DV[ Jbl:) q9 brpbg_ //保存下载信息(文件指针位置) {,f!'i&b@ private void write_nPos() "56?/ jF { qi SEnRG. try{ =3sldKL&F output = new DataOutputStream(new FileOutputStream(tmpFile)); ^s@*ISY output.writeInt(nStartPos.length); j t`p<gI for(int i=0;i<nStartPos.length;i++) UI<PNQvo9 {
#
5f|1O // output.writeLong(nPos); Ef`5fgp?
S output.writeLong(fileSplitterFetch.nStartPos); "T a9
output.writeLong(fileSplitterFetch.nEndPos); -hVv } ,-7/]h,l output.close(); Jh&~/ntmm_ } ?]\W8) catch(IOException e){e.printStackTrace ();} 9O=05CQ catch(Exception e){e.printStackTrace ();} 4ljvoJ}xjr } dx13vZ3[U zK>'tFU w{r(F` //读取保存的下载信息(文件指针位置) =tf@4_ private void read_nPos() *K}z@a_ { /G)KkBC try{ #U$YZ#B DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 5"}y\ int nCount = input.readInt(); Pv7f
_hw nStartPos = new long[nCount];
?+
-/'; nEndPos = new long[nCount]; {V%%^Zhwy for(int i=0;i<nStartPos.length;i++) 8tV=fSHd { t*Vao nStartPos = input.readLong(); npO@Haw nEndPos = input.readLong(); 1=/doo{^ } hB
P$9GR input.close(); E?Qz/*'zv } -t%{"y catch(IOException e){e.printStackTrace ();} k+WO &g*| catch(Exception e){e.printStackTrace ();} &h7smZO5j } Ok}{jwJ%W; 5U-p'c9IC N"Y K@)*Q private void processErrorCode(int nErrorCode) ;!l*7}5X= { DMAf^.,S System.err.println("Error Code : " + nErrorCode); yN 9$gfJC^ } #.E\,N' o%V
@D'w OX)#F'Sl} //停止文件下载 R<n8M"B public void siteStop() u [V4OU}% { X+dR<GN+YX bStop = true; _=|nOj39 for(int i=0;i<nStartPos.length;i++) 6\,DnO fileSplitterFetch.splitterStop(); 9tzoris[~ :LZ-da"QR Bmx(qE } -Q<z1vz } $i,6B9 //负责部分文件的抓取 j>$=SMc **FileSplitterFetch.java yxaT7Oqh% */ ]>
nPqL package NetFox; IvEMg2f} Y%78>-2L Zz"I.$$[M import java.io.*; aL8p"iSG9 import java.net.*; .abyYVrN4? snXB`UC 2wB.S_4"-< public class FileSplitterFetch extends Thread { ZhhI@_sz BCBEX&0hk{ Q=d.y&4% String sURL; //File URL OZ(Dpx(Q long nStartPos; //File Snippet Start Position SQh+5 long nEndPos; //File Snippet End Position %*$5!; int nThreadID; //Thread's ID !OPSS P]- boolean bDownOver = false; //Downing is over ;M}itM boolean bStop = false; //Stop identical P7's8KOoS FileAccessI fileAccessI = null; //File Access interface *-?Wcz f'1(y\_fb }czsa_ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ctp?y { "Z;~Y=hC13 this.sURL = sURL; }TSgAwsbC this.nStartPos = nStart; MQwIPjk8 this.nEndPos = nEnd; PXV)NC nThreadID = id; JT4wb]kdV fileAccessI = new FileAccessI(sName,nStartPos);//定位 qOW#Q:T } 3Bejp+xX X6Un;UL $[[?;g public void run() @'*eC}\E { 2$M,*Dnr while(nStartPos < nEndPos && !bStop) `q%U{IR { q<n[.u1@ v9u<F6 YnSbw3U.I try{ &B}Lo
URL url = new URL(sURL); B1E$v(P3M HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); @!e~G'j%VD httpConnection.setRequestProperty("User-Agent","NetFox"); Vr 8:nP: String sProperty = "bytes="+nStartPos+"-"; `AR"!X httpConnection.setRequestProperty("RANGE",sProperty); yk<VlS Utility.log(sProperty); im8
-7Xt tmp6hB 0mTEim InputStream input = httpConnection.getInputStream(); =ai2z2z //logResponseHead(httpConnection); 69Nw/$ S`=n&' 6JSY56v byte[] b = new byte[1024]; \]I int nRead; b4CF`BG while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) Tp?-*K { '99@=3AB:` nStartPos += fileAccessI.write(b,0,nRead); -^Xy% //if(nThreadID == 1) 'G8 ?'u_) // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); {SJsA)9:# } #F!Kxks T^]7R4Fg *hF^fxLbl Utility.log("Thread " + nThreadID + " is over!"); qEQAn/& bDownOver = true; MWs~#ReZ //nPos = fileAccessI.write (b,0,nRead); +< yhcSSTB } 7Lg7ei2mN7 catch(Exception e){e.printStackTrace ();} C',6%6P } 0 _A23.Y } "]#'QuR -w]/7cH IE;\7r+h //打印回应的头信息 J=iRul^S public void logResponseHead(HttpURLConnection con) .*Vkua { rLzW` for(int i=1;;i++) WL
U } { tuxRVV8l String header=con.getHeaderFieldKey(i); b9 uBdo@o if(header!=null) ]JdJe6`Mc //responseHeaders.put(header,httpConnection.getHeaderField(header)); 6{=_718l` Utility.log(header+" : "+con.getHeaderField(header)); jXp. qK\" else 51 4Z<omrK break; Uw)=WImz[ } ]-:6T0JuS } ^m%52Tm
h {<K=*rrZ Yw)Fbt^ public void splitterStop() f*m[|0qI<X { 3v1 7" bStop = true; o=_c2m
} 0%<+J;'o qTM%G- 3-|3`( } / t5p- S^N{wZo OlY$v@| /* 89HsPB1"t **FileAccess.java {^m Kvc *//文件访问(定位,写) {C")#m-0 package NetFox; %tm p import java.io.*; ;>>C)c4V " #xT!E:W' KX4],B5 + public class FileAccessI implements Serializable{ |=K_F3aJ b>11h //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 8-Me.2K RandomAccessFile oSavedFile; Ig \#f long nPos; +Xy*?5E;C &<]<a_pw R_N:#K.M public FileAccessI() throws IOException :O-1rD { )T|L,Lp this("",0); z|N3G E(.@ } :50b8 v }\,o%t^ d@ Ja}` public FileAccessI(String sName,long nPos) throws IOException GP a`e { :iUF7P1I oSavedFile = new RandomAccessFile(sName,"rw"); #hw>tA6 this.nPos = nPos; eu#'SXSC
F oSavedFile.seek(nPos); (zcLx;N
} ae+*=, ",Cr,;] 3tAU?sV! public synchronized int write(byte[] b,int nStart,int nLen) j/!H$0PN { R 94^4I int n = -1; (u1m]WYL try{ K8I$]M oSavedFile.write(b,nStart,nLen); l.+yn91%> n = nLen; vbG]mMJ } ~AB*]Us catch(IOException e) :iF%cy. { I]`-|Q E e.printStackTrace (); * ?Jz2[B } gm"#:< ) 0<p{BL8 9jir*UI return n; j+IrqPKC^ } 8V/L:h#7 Z u*K-ep" Cb;WZ3HR } F7*wQ{~ aHzHvl +-?/e-z") /* e^1uVN **SiteInfoBean.java RP4Ku9hk */ \;X+X,M package NetFox; V ~{fB~ Cfu=u *u muON>^MbC public class SiteInfoBean { Xd
`vDgD l@Z6do k?GD/$1t private String sSiteURL; //Site's URL *iA4:EIP private String sFilePath; //Saved File's Path yR5XJ;Tct private String sFileName; //Saved File's Name c3%@Wj:fo private int nSplitter; //Count of Splited Downloading File J Yb}Zw; ^Q<mV*~ (5L-G{4 public SiteInfoBean() ,5
j"ruZ {//nSplitter的缺省值为5 @@G6p($ //default value of nSplitter is 5 &DG->$&| this("","","",5); (rtY!<|p } 2S[-$9 da!P0x9p OHrY(I6 public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) &<TzGB* { &
WOiik sSiteURL= sURL; `mfq
2bVc sFilePath = sPath; DE$q+j0P sFileName = sName; yM.IxpT#$ this.nSplitter = nSpiltter; =<@2#E) YUU-D( #FOqP!p.E } D1
Z{W B_`y|sn N7r_77%m0 public String getSSiteURL() O) |P,? { f>o,N{| return sSiteURL; O43YY2 } :,12")N %VJ85^B3 uP3_FX:
e public void setSSiteURL(String value) ,fDEz9-, { b3-eR5U/ sSiteURL = value; n%^ LPD } Di_2Plo)4 moj]j`P5a rPNb\Ri public String getSFilePath() +6$g!S5{ { dCe4u<so\ return sFilePath; V"o7jsFH6n } @oF$LMD V3;.{0k 5Z/GK2[HL public void setSFilePath(String value) 6Tw#^;q- { 1 2++RkL# sFilePath = value; /v|"0 } @$"J|s3M SKuIF*"!S jCAC
` public String getSFileName() ev0oO+u { iI@jZVk return sFileName; FsB^CxVg } L9Z;:``p #*$P'r X{n- N5* public void setSFileName(String value) P7ph}mB { R3)57OyV sFileName = value; \;-fi.Hrf$ } 93+"D` zl-2$}<a R+q"_90_ public int getNSplitter() IEjP<pLe { ML-)I&>tT return nSplitter; &
gJV{V5Ay } M<SdPC(+ ,P'P^0qJ F62V3 Xy public void setNSplitter(int nCount) uPYmHA}_/ { _LAS~x7, nSplitter = nCount; ihh4pD27g } 4k/VBZB } PiV7*F4qI. Ftw;Yz L-pVltX /* Q'+MFld **Utility.java R1F5-#?'E */ |9"p|6G?B package NetFox; Eh-n 9_\'LJ 8ul&x~2;X public class Utility { ze_{=Cv&Y ,D\GGRw O8|5KpXd@ public Utility() fgNU03jp^x { pA{ 5V9 ^qCkt1C-M &U+ _ -Ph } ^8 ' sib
h/x0]@M& //线程睡眠 th6+2&B6 public static void sleep(int nSecond) H$af/^ { @
S <-d try{ yNm:[bOER Thread.sleep(nSecond); V{|}}b?w? } :Rs^0F8)c catch(Exception e) f84:hXo6 { }M1sksk5 e.printStackTrace (); k{gLMl } g}p;\o
} b 1&i# I?{ {;2vmx9 //日志 -XRn~=5 public static void log(String sMsg) +(uYwdcN { :'aAZegQY System.err.println(sMsg); .(J?a" } jCTAKaq Z):n c% S _"4xKh) public static void log(int sMsg) 9 Pw0m=4 { yr#5k`&\_ System.err.println(sMsg); #,{+3Y&5-+ } mDh1>>K'~ } b$k&dT\o /6O??6g x{NX8lN /* UpXz&k **TestMethod.java lnE+Au' */ +n}$pM|NKU package NetFox; 65ly2gl zrVC8Wb TpA\9N#$ public class TestMethod { p!Eft/A( ?Qb<-~~
j1 <8UYhGK public TestMethod() CE15pNss { ///xx/weblogic60b2_win.exe IlX$YOf4 try{ uP\lCqK, SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); Z ,^9Z //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); iR$<$P5 SiteFileFetch fileFetch = new SiteFileFetch(bean); 7u\*_mrv fileFetch.start(); -C#PQV } `>DP,D)w( catch(Exception e){e.printStackTrace ();} `V[!@b: "m{,~'x Y32O-I!9u } ]]}tdn _ :V)lbn\ ( 6(x'ByT public static void main(String[] args) %LXM+<N8 { 8+mH:O new TestMethod(); +.RKi! } QZ
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