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/* s4uhsJL V$ **SiteFileFetch.java h?azFA~ */ <(-hx+^ package NetFox; /n8B,-Z5s5 import java.io.*; '3 ^+{=q import java.net.*; RnDt)3 5O6hxcMjT Dv/WE>?Aw public class SiteFileFetch extends Thread {
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nZ _Wa.JUbv SiteInfoBean siteInfoBean = null; //文件信息Bean (/j); oSK long[] nStartPos; //开始位置 W!&vul5 long[] nEndPos; //结束位置 qC?:*CXH FileSplitterFetch[] fileSplitterFetch; //子线程对象 b 'pOJS long nFileLength; //文件长度 J>bJ
449B boolean bFirst = true; //是否第一次取文件 6}oXP_0U boolean bStop = false; //停止标志 ,9o"43D:a| File tmpFile; //文件下载的临时信息 dB5b@9* DataOutputStream output; //输出到文件的输出流 >#y^;/bb bAm(8nT7w //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) }7.PH'.8 public SiteFileFetch(SiteInfoBean bean) throws IOException ;y2/-tL? { d:U9pC$ siteInfoBean = bean; [`):s= FC //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); #gcF"L|| tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); =Yt
R` if(tmpFile.exists ()) #*(td<Cp { 5EebPXBzB bFirst = false; %$Aqle[ read_nPos(); heK7pH7;d } n;T7= 1_" else UZpIcj cL { a)'5Nw9* nStartPos = new long[bean.getNSplitter()]; %&Q$dzgb_ nEndPos = new long[bean.getNSplitter()]; aWY
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S5[7$ public void run() & J2M1z% { cu/5$m?xx //获得文件长度 9BuSN*4 //分割文件 /Dj=iBO //实例FileSplitterFetch 8!Ww J
Oe //启动FileSplitterFetch线程 u[
Yk //等待子线程返回 '5|h)Q5 try{ |]X if(bFirst) k<\$OoOZ { eXf22;Lz nFileLength = getFileSize(); q*7VqB if(nFileLength == -1) 5w@4:$=I { c>)Yt^q&K System.err.println("File Length is not known!"); d >t<_} } I]EbodAyZ, else if(nFileLength == -2) AQ[GO6$,%H { C
.~+*"Vw System.err.println("File is not access!"); ^i}
L-QR } #Ibp( else 2P@sn!*{1 { +P`*kj-P\ for(int i=0;i<nStartPos.length;i++) Kiu_JzD { 1jF`5k nStartPos = (long)(i*(nFileLength/nStartPos.length)); F ;2w1S^ } cj'}4( for(int i=0;i<nEndPos.length-1;i++) o_^?n[4 { `I,,C,{C nEndPos = nStartPos[i+1]; A*/HjTX } O2%? nEndPos[nEndPos.length-1] = nFileLength; De(Hw&
IV } b7p@Dn?E } aD$v2)RR k+ty>bP= D,k"PaLP //启动子线程 = < oBgD0k fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; RpD=]y!5_ for(int i=0;i<nStartPos.length;i++) T"DlT/\ { >)M`IU[d^. fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(),
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)__h siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 428>BQA nStartPos,nEndPos,i); |='z{WS Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Qh'ATo fileSplitterFetch.start(); 1NgCw\ } M 4?ig}kh // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), W)f/0QX}W siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); @3C>BLI8+ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 2-Ej4I~ nEndPos = " + nFileLength); VYk!k3qS // fileSplitterFetch[nPos.length-1].start(); zIu
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7B\Vs-d < F.hZGss7 //等待子线程结束 3GhRWB-U //int count = 0; !~rY1T~ //是否结束while循环 j+uLV{~g6 boolean breakWhile = false; P<a)25be/ 9E"vN O%5
r[ while(!bStop) [VsKa\9u { HTS%^<u write_nPos(); E4~<V=2l Utility.sleep(500); \(^nSy&N breakWhile = true; 5a|w+HO, 8)10o,#L rFj-kojg for(int i=0;i<nStartPos.length;i++) ,l:ORoND { t7j);W%e6 if(!fileSplitterFetch.bDownOver) +oovx2r& { #x 177I\ breakWhile = false; ASk|A! break; |n,<1QY } iA' lon } 8L:ji," if(breakWhile) -v]Sr33L break; noml8o HiR[(5vnf hM6PP7XH //count++; vnM@QfN //if(count>4) rPLm5ni // siteStop(); q#,f 4P } 7G}2,ueI ;
Q3n 'kL#] System.err.println("文件下载结束!"); rMLp-aR' } $JMXV catch(Exception e){e.printStackTrace ();} 5#+^E{ } !y@NAa0 C(#u[8 %}Ss,XJ //获得文件长度 0;AA/ public long getFileSize() ?&63#B,iZ { 0 Tx{3# int nFileLength = -1; CzRc%%BA try{ XF;ES3 d URL url = new URL(siteInfoBean.getSSiteURL()); Of[XKFn_ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); d9;g]uj` httpConnection.setRequestProperty("User-Agent","NetFox"); _lGdUt 2 o:3dfO%nuM iB%gPoDCL@ int responseCode=httpConnection.getResponseCode(); }dWq=)* if(responseCode>=400) o7sT=x9 { ToXki, processErrorCode(responseCode); DVB{2~7 4 return -2; //-2 represent access is error +'I+o5* } W;'!gpa Rn9m]x ,!Z*5 String sHeader; ]+XYEv 2.l Z:VLN jB$IyQ;@ for(int i=1;;i++) J;{N72 { 4W#vP //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); G
MX? //Utility.log(in.readLine()); &]v4@%<J sHeader=httpConnection.getHeaderFieldKey(i); W&&;:Fr if(sHeader!=null) Nn~~!q { :D%"EJ if(sHeader.equals("Content-Length")) C)@y5. G; { G~2jUyv nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 52 fA/sx break; w$z}r }
-QM:
q } rV R1wsaL else :Q $K<)[ break; )Ch2E|C?=8 } njScz"L~ } >L;eO'D catch(IOException e){e.printStackTrace ();} 0=* 8
catch(Exception e){e.printStackTrace ();} Bm.:^:&k aE&,]'6 E:JJ3X| Utility.log(nFileLength); K?B{rE Lp hb zC#@q ;V*R*R return nFileLength; \>:CvTzF } Z&1T dJ2Hr;Lc R?~Yp?B^ //保存下载信息(文件指针位置) 7n8~K3~; private void write_nPos() ?Z Rs\+{vG { /'].lp try{ ~$:|VHl output = new DataOutputStream(new FileOutputStream(tmpFile)); bJRN;g output.writeInt(nStartPos.length); lef2 X1w}! for(int i=0;i<nStartPos.length;i++) 5R@ { Cjqklb/ // output.writeLong(nPos); {QHVo# output.writeLong(fileSplitterFetch.nStartPos); HJXT9;w output.writeLong(fileSplitterFetch.nEndPos); y#Fv+`YDl } 6x h:/j3 output.close(); WG6FQAo^8 } J
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catch(IOException e){e.printStackTrace ();} {QcLu"?c catch(Exception e){e.printStackTrace ();} 0fF(Z0R, } WHsgjvh" hd>aZ"nm1 #MX'^RZ>2 //读取保存的下载信息(文件指针位置) ,k{#S?:b private void read_nPos() ohF JZ' { d
F9!G;V try{ 8YZbP5' DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); GN ]cDik int nCount = input.readInt(); ud xZ0 nStartPos = new long[nCount]; #33fGmd[ nEndPos = new long[nCount]; ?ooe'V@ for(int i=0;i<nStartPos.length;i++) yaah*1ip[ { 7ePqmB<. nStartPos = input.readLong(); @ zs'Y8 nEndPos = input.readLong(); LQ(yScA@ } *AoR==:ya input.close(); X%Z{K- } P|.] DJ catch(IOException e){e.printStackTrace ();} LQtj~c>X-| catch(Exception e){e.printStackTrace ();} uJFdbBDSh } g .onTFwN biSz?DJ> KNS.Nw7 private void processErrorCode(int nErrorCode) ~%^
tB { (8Bk;bd System.err.println("Error Code : " + nErrorCode); (@%gS[] } .q%WuQw giZP.C"0 Y' %^NP}o //停止文件下载 )Y2{_ bx4" public void siteStop() zA$k0p { v%"|WV[N bStop = true; Sz^
veh? for(int i=0;i<nStartPos.length;i++) f0X_fm_q fileSplitterFetch.splitterStop(); `8^TTQ `S6x<J&T\/ .2%zC & ; } 5]n[]FW } 99:C"`E{ //负责部分文件的抓取 G]+&!4 **FileSplitterFetch.java .WPV dwV4U */
k\WR ] package NetFox; |/09<F:L[ J3n-`k8 RLbKD> import java.io.*; X:6c}p%,! import java.net.*; I_<I&{N> _59huC. Ag&0wN+jTM public class FileSplitterFetch extends Thread { 8g&?
Cc +pR[U4$ W7U2MqQ String sURL; //File URL tS|(K=$
long nStartPos; //File Snippet Start Position kL$!E9 long nEndPos; //File Snippet End Position 'R
c,Mq' int nThreadID; //Thread's ID >N]7IU[- boolean bDownOver = false; //Downing is over K Pt5=a boolean bStop = false; //Stop identical pgOQIzu FileAccessI fileAccessI = null; //File Access interface i(iXD nHm}zOLc c
)G3k/T5 public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 5<UVD:~z {
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^ cyX this.sURL = sURL; kg'o&^/= this.nStartPos = nStart; -?mfE+kt this.nEndPos = nEnd; cUvz2TK nThreadID = id; #)C[5?{SNq fileAccessI = new FileAccessI(sName,nStartPos);//定位 #wV8X`g } EJsM(iG]~M ;~D)~=|ZZ VzY8rI public void run() K2J\awX { `[W[H(AjQ while(nStartPos < nEndPos && !bStop) LN@F+CyDc { 1IZ3=6 XDFx.)t fp+gyTnd3 try{ y#q?A,C@n URL url = new URL(sURL); T~Gvp0r}h HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); MM(xk httpConnection.setRequestProperty("User-Agent","NetFox"); {&\jW!&n String sProperty = "bytes="+nStartPos+"-"; kzt(i Y_6 httpConnection.setRequestProperty("RANGE",sProperty); `NgAT
3zq Utility.log(sProperty); vTJ}8 hM{{\yZS :TJv=T'p' InputStream input = httpConnection.getInputStream(); Jo@|"cE= //logResponseHead(httpConnection); R}q>O5O ?XA2& oxz OA byte[] b = new byte[1024]; cd$m25CxC int nRead; "4uS3h2r while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) z7Q?D^miy { TWQG591 nStartPos += fileAccessI.write(b,0,nRead); (Q.waI //if(nThreadID == 1) P!+'1KR // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); M#As0~y } bO'Sgc[] Q\
U:~g3 9983aFam Utility.log("Thread " + nThreadID + " is over!"); :=wTvz bDownOver = true; )u/yF*:n //nPos = fileAccessI.write (b,0,nRead); (^u1~1E 5 } Qj.l:9% catch(Exception e){e.printStackTrace ();} 1n:8s'\ } C4~;y hz } d5D$&5Ec gG-BVl"59 9Hc$G{[a //打印回应的头信息 dt`{!lts' public void logResponseHead(HttpURLConnection con) [&&1j@LQ* { ReM=eS for(int i=1;;i++) pO ml8SQf { nij!1z|M String header=con.getHeaderFieldKey(i); v(EEG/~ if(header!=null) 5ZMR,SZhC //responseHeaders.put(header,httpConnection.getHeaderField(header)); 1DvR[Lx% Utility.log(header+" : "+con.getHeaderField(header)); -lhLA`6_R else lJE93rXU break; N1|$$9G+ } =y/8^^ } XI22+@d6 3WUTI( K)\M5id] public void splitterStop() Fl1;;F { 't6V:X bStop = true; 1$%V{4bJ } >]W)'lnO Er+nk`UR_ 2U; t(,dn' } /ew
Ukc8, v7DE unBy&?&p /* D?0zhU **FileAccess.java D,g1<:< *//文件访问(定位,写) <j5NFJ9 package NetFox; wAxrc+ import java.io.*; e(I=^#u6 ,;(PwJe ;uW}`Q< public class FileAccessI implements Serializable{ >&p0d0 86\S?=J-b //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 IjR'Qou5 RandomAccessFile oSavedFile; opJMS6%r long nPos; -tyK~aasQ mGGsB5#w> iTV) NsC} public FileAccessI() throws IOException OBP1B@|l$+ { 9$|Gfyv this("",0); tX"Th'Qi } *0>mB e`v`XSA[p d\FJFMW*9 public FileAccessI(String sName,long nPos) throws IOException `zE}1M%y { Ko/ I#) oSavedFile = new RandomAccessFile(sName,"rw"); ^4`Px/& this.nPos = nPos; &ZX{R#[L oSavedFile.seek(nPos); vMs$ceq } S -'fS2 LbZ:&/t^y8 n Ml%'[u public synchronized int write(byte[] b,int nStart,int nLen) qg}O/K { }GZ}Q5 int n = -1; @;H,gEH^ try{ SY^dWLf oSavedFile.write(b,nStart,nLen); Iz{R}#8CZ n = nLen; P b]3&!a } yT#{UA^ catch(IOException e) -M1YE { {!K-E9_,S e.printStackTrace (); x"CZ]p&m } NSFs\a@1 .LuB\o$ B-T/V-c7 return n; yin'vgQ } ,s_T pq ]+m/;&0 )5.C]4jol } C>[fB|^ 8B#GbS
K RJON90,J /* !Y:0c#MPH **SiteInfoBean.java =Mb1o[ */ h#hxOVl%x package NetFox; @5[kcU> &V<W>Y>|l* vc]cNz:mQ public class SiteInfoBean { \ AC|?/sH E3*\
^Q_ F5 ]C{ private String sSiteURL; //Site's URL CY&
hIh~S@ private String sFilePath; //Saved File's Path <uc1D/~^: private String sFileName; //Saved File's Name v i)%$~ private int nSplitter; //Count of Splited Downloading File )Y8",Ig gn{=%`[ atW' public SiteInfoBean() QERU5|.wc {//nSplitter的缺省值为5 _HA$
j2
//default value of nSplitter is 5 NKmoG\* this("","","",5); `+/H^ } 5c;h& }rdIUlVO\ er.CDKD%L public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) &
``d { 7 ua6l[c sSiteURL= sURL; m"9XT)N sFilePath = sPath; O`$#Pg sFileName = sName; AC.A'|"]i this.nSplitter = nSpiltter; G8I Y# 1'4J[S\cM M@thI%lR } \Yoa:|%*y =9LC<2 Kwhdu<6 public String getSSiteURL() z1!6%W_. { pU!o7>p return sSiteURL; oR*=|B } Oc&),ru2l 4{qB X? m ga6[E< public void setSSiteURL(String value) %o}(sShS { GyC /_ntn sSiteURL = value; cW``M.d'F } [ "xn5lE /i)Hb`(S )n=ARDd^e public String getSFilePath() jvVi%k { g8'DoHJ* return sFilePath; ^I]{7$6^ } I|/'Ds: 5v^L9!`@%v
= c~I
. public void setSFilePath(String value) 2>\\@1 { PzY)"]g sFilePath = value; 'xFYUU]#T^ } Iwpbf Z T[Pa/j{ \O7J=6fn public String getSFileName() dZGbC 9 { L<(VG{)Z return sFileName; 5%
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puU &2EBk= X 4%*hGh= public void setSFileName(String value) cbKL$| { ["3df>!f sFileName = value; &B!%fd.' } Q1>zg,r %d: A`7x LEh)g[
public int getNSplitter() -cNx1et { AV @\ +0 return nSplitter; !;>(ie\ } l9{#sas #1$}S=8*f ;^l_i4A public void setNSplitter(int nCount) ;Mj002.\G { -O&"| nSplitter = nCount; DM3B]Yl } !v!N>f4S$ } b2h":G|s |0{ i9.= M@?"t_e1 /* NMjnL&P` **Utility.java >,h1N$A+ */ =sQ(iso%f package NetFox; L(WOet( ' %OI4a5V*l A|<; public class Utility { GYgWf1$8_D eX<K5K.B p[YWSjf public Utility() Wp*sPZ { Um
;kd J0Four#MD bNvAyKc- } B5Va%?Wg?H Riql,g/ //线程睡眠 @
t@|q public static void sleep(int nSecond) Zd>ZY,-5 { Ea`OT+#h(* try{ |t\KsW Thread.sleep(nSecond); Pi%tsKk% } ida*]+ ~ catch(Exception e) 8Nvr93T, { 3%NE/lw1 e.printStackTrace (); v_-ls"l } ChIoR:y> } Am7| / }'jV/ //日志 3@X|Gs'_S public static void log(String sMsg) x_ySf!ih { Z90Fcp:R System.err.println(sMsg); sM9-0A } u'@Ely OQ|,- gY\mXM*^ public static void log(int sMsg) "4[<]pq { /$OIlu System.err.println(sMsg); ~}%&p&
p } J_/05(48 } ZW2s[p r Ko-QR( 3d U#Ueu /* ]84YvpfW **TestMethod.java mE_iS?1 */ a?\ `
package NetFox; F$C+R&V_ 9>zDJx &0h=4i=6r public class TestMethod { +ks$UvtY =KW|#]RB^ Q}ZBr^*]1e public TestMethod() ^X(_zinN" { ///xx/weblogic60b2_win.exe =~;zVP try{ sK[Nti0 SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); SFOQM*H //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); fX$6;Ae SiteFileFetch fileFetch = new SiteFileFetch(bean); u4xA'X'~R fileFetch.start(); KD9Ca $- } @+Pf[J41 catch(Exception e){e.printStackTrace ();} X[Y#+z4 hAYQ6g$A _]Z$YM } np&HEh 6 SaTEZ. Zm5nLxM public static void main(String[] args) 2@4MC`& |