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/* @ yg|OA} **SiteFileFetch.java e"o6C\c */ vSYunI package NetFox; @wEKCn|}o import java.io.*; _
r^90 import java.net.*; +YQ~t,/ FU]8.)`G 3lLW'g&= public class SiteFileFetch extends Thread { XUQW;H oieQ2>lYh w8ZHk?: SiteInfoBean siteInfoBean = null; //文件信息Bean Y>78h2AU long[] nStartPos; //开始位置 BYr_Lz|T
long[] nEndPos; //结束位置 J:g<RZZ1 FileSplitterFetch[] fileSplitterFetch; //子线程对象 Z/NGv long nFileLength; //文件长度 +B`'P9Zk@ boolean bFirst = true; //是否第一次取文件 z,}c?BP boolean bStop = false; //停止标志 &e HM#as File tmpFile; //文件下载的临时信息 KD%xo/Z. DataOutputStream output; //输出到文件的输出流 EU^}NZW&v: RWh9&O:6' //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) J3lG"Ww public SiteFileFetch(SiteInfoBean bean) throws IOException @Hspg^ { F=
_uNq siteInfoBean = bean; IFC%%It5, //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 0.J1!RIK/ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); {FV,j.D if(tmpFile.exists ()) dJ%wVY0z= { VVI8)h8 bFirst = false; fW5"4, read_nPos(); $,; ;u:- } ~{1/* &P else @O}IrC!bf { $tDCS nStartPos = new long[bean.getNSplitter()]; vDK:v$g nEndPos = new long[bean.getNSplitter()]; ;Ch+X$m9 } =2.tu*!C B91S
h` Pp1zW3+Q 1EC -e|M. } ibZt2@GB)I pPi YPfs R
"/xne public void run()
Z;j/K { >G-8FL //获得文件长度 mHK@(D7X //分割文件 #/n|@z' //实例FileSplitterFetch AkYupP2]v //启动FileSplitterFetch线程 G8^0^@o //等待子线程返回 ":UWowJO try{ MO));M) if(bFirst) Lf,CxZL5 { 'L>&ZgLy nFileLength = getFileSize(); rQu if(nFileLength == -1) F:[7^GQZ{ { ou<S)_|Iu System.err.println("File Length is not known!"); N`,7 FI} } 5 `4}A%@& else if(nFileLength == -2) kP!%|&w; { Tm%$J System.err.println("File is not access!"); ;=5@h!@R } Qa,NGP. else itqQ)\W { GN:Ru|n for(int i=0;i<nStartPos.length;i++) s
jL*I { S+.21, nStartPos = (long)(i*(nFileLength/nStartPos.length)); ri/t(m^{W } w8AJ#9W for(int i=0;i<nEndPos.length-1;i++) ! 6p>P4TT { o|z+!, nEndPos = nStartPos[i+1]; ^?$D.^g } \]Y\P~n nEndPos[nEndPos.length-1] = nFileLength; l 8O"w& } E/"YId `A } ~pHJ0g:t b\SXZN)Be { c v;w //启动子线程 6V'wQqJ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; /M0l
p for(int i=0;i<nStartPos.length;i++) 3[MdUj1y[ { :`:xP fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), =3h+=l[ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), !7A"vTs nStartPos,nEndPos,i); :.C+?$iuX Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ,|e} Y
[ fileSplitterFetch.start(); ??%)|nj. } U>/<6Wd // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), IY];Ss&i siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); R<0Fy =z // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", R^jlEt\&P nEndPos = " + nFileLength); GwgFi@itN // fileSplitterFetch[nPos.length-1].start(); k-{yu8*'; #=X)Jx~ ShC_hi //等待子线程结束 Jy]FrSm^ //int count = 0; :~\LOKf //是否结束while循环 [NQmL=l boolean breakWhile = false; ^c/mj9M#C B1|?RfCe Qy4X#wgD while(!bStop) Ty`-r5 { !a' K & write_nPos(); IkSX\* Utility.sleep(500); e{v,x1Y_z( breakWhile = true; pG)9=X!9 P#AAOSlLV gsW=3m&` for(int i=0;i<nStartPos.length;i++) Z6 t E{/ { ?RZq =5Um& if(!fileSplitterFetch.bDownOver) k%{ l4 { t{+M|Y breakWhile = false; o)0C-yO0qf break; f&6w;T= } 6{5q@9F } D~cW
]2 if(breakWhile) =YWT|%^uX break; A{4Dzm ! aML#Z |n '
be P //count++; u8|@|t //if(count>4) v2IEJ // siteStop(); 5iP8D<;o5 } bBA$}bv )J;ny!^2 6a7vlo System.err.println("文件下载结束!"); +c-6#7hh } uZ@-e|qto catch(Exception e){e.printStackTrace ();} ksTzXG8 } {d| |q<.- 7raSf&{&6b LEWa6'0rq //获得文件长度 r])Z9bbi public long getFileSize() AnRlH { _o\>V:IZ int nFileLength = -1; [6O04"6K try{ @XeEpDn] URL url = new URL(siteInfoBean.getSSiteURL()); DNmb[ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); $"/UK3|d httpConnection.setRequestProperty("User-Agent","NetFox"); DLU[<!C l+t #"3 ;?0_Q3IML int responseCode=httpConnection.getResponseCode(); _B}9f if(responseCode>=400) :qBGe1Sv( { /j11,O?72 processErrorCode(responseCode); I"B8_ return -2; //-2 represent access is error f(!E!\&n^ } &j3`
)N GaHA% K*[9j 0 String sHeader; M|ms$1x w2k<)3 g~ DUqJ y*F( for(int i=1;;i++) w
nWgy4: { j+$M?Z^ //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 9e]'OKL+ //Utility.log(in.readLine()); o\&~CW~@~ sHeader=httpConnection.getHeaderFieldKey(i); `(3SfQ- if(sHeader!=null) q1STRYb { aQga3;S! if(sHeader.equals("Content-Length")) %?Rs*-F.~1 { 4e}{$s$Xx nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); *vb ^N0P break; n|6?J_{<b> } Sobtz}A* } 2%5?Fn= else %Mh Q
break; !z?0 :Jg } .xEJaID\N } `-o5&>'nf catch(IOException e){e.printStackTrace ();} MvBD@`&7 catch(Exception e){e.printStackTrace ();} F,Q?s9s !Ri
r&gF 8[oYZrg Utility.log(nFileLength); bQ<b[
C>4UbU k5wi' return nFileLength; 4\\.n } i =-8@ WK*S4c R+d<
fe //保存下载信息(文件指针位置) w(Gz({l+ private void write_nPos() 3I]Fdp)' { '[Xl>Z[ try{ #K|0laul output = new DataOutputStream(new FileOutputStream(tmpFile)); \04mLIJr9 output.writeInt(nStartPos.length); |gW
for(int i=0;i<nStartPos.length;i++) 3524m#4&@ { Qo.Uqz.C // output.writeLong(nPos); vGMJ ^q output.writeLong(fileSplitterFetch.nStartPos); DKTD Z* output.writeLong(fileSplitterFetch.nEndPos); %MbyKz:X } t-!m
vx9Z output.close(); {M[~E|@D } ^Z#@3= catch(IOException e){e.printStackTrace ();} :&9TW]*g catch(Exception e){e.printStackTrace ();} wYjQV?, } ~H u"yAR 1+a@k &Xv1[nByU //读取保存的下载信息(文件指针位置) ]rnXNn; private void read_nPos() {\EOo-&A {
J,(7.+`~# try{ MQJ%He" DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 3 "Yif int nCount = input.readInt(); 0yz~W(tsm nStartPos = new long[nCount]; S7CV
w,2 nEndPos = new long[nCount]; 9_UN.] for(int i=0;i<nStartPos.length;i++) +bUW!$G { -TTs.O8P|< nStartPos = input.readLong(); =e{.yggE nEndPos = input.readLong(); r1;e 0\?` } Yy hny[fa9 input.close(); lVoik*,B } ETO$9}x[ catch(IOException e){e.printStackTrace ();} @(>XOj?+ catch(Exception e){e.printStackTrace ();} [zQWyDu } #]y5zi O#:&*Mv ;%Q&hwj private void processErrorCode(int nErrorCode) ' S ,2 { &{ ZSE^ System.err.println("Error Code : " + nErrorCode); R*bmu } B)6#Lp3 t.)AggXj# {fU?idY)c //停止文件下载 HxIoA public void siteStop() P6YQK+ { s"coQ!e1. bStop = true; \(fq8AL? for(int i=0;i<nStartPos.length;i++) Xu#:Fe}: fileSplitterFetch.splitterStop(); Xpl?g=B&u 88 l,&2q n P1GW6Pu } 8_a3'o%5 } `%=<R-/#7S //负责部分文件的抓取 iP#=:HZu; **FileSplitterFetch.java aMJ;bQD
*/ W#{la`#Bu package NetFox; h/K@IAd +c) TDH #9:2s$O[x import java.io.*; bi$VAYn.^ import java.net.*; =EpJZt 0hwj\{" |dk[cX> public class FileSplitterFetch extends Thread { +s~.A_7) H^
BYd%- xA #H0?a] String sURL; //File URL pj;
I)-d/ long nStartPos; //File Snippet Start Position 6t7fa< long nEndPos; //File Snippet End Position vq>l>as9O int nThreadID; //Thread's ID k>5 O`Y: boolean bDownOver = false; //Downing is over ;LQ9#M? boolean bStop = false; //Stop identical CGZ^hoh/ FileAccessI fileAccessI = null; //File Access interface opD-vDa h bX2"89{
L/i(KF{ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ARWZ; GX { *
t!r@k this.sURL = sURL; 9i%9
this.nStartPos = nStart; wf9z"B this.nEndPos = nEnd; +EkW>$ nThreadID = id; u7].}60.' fileAccessI = new FileAccessI(sName,nStartPos);//定位 #epy%> } ,2,5Odrz mCdgKr|n e&1\'Zq?> public void run() Mu2`ODe] { OCK>%o$[ while(nStartPos < nEndPos && !bStop) BQ#L+9% { m@\ZHbq re`t ]gzb <3Gqv9Y& try{ :=fvZA WD URL url = new URL(sURL); iM5vrz`n HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 9 Cvn6{ httpConnection.setRequestProperty("User-Agent","NetFox"); X+l'bp]Ry String sProperty = "bytes="+nStartPos+"-"; :E'P7A
httpConnection.setRequestProperty("RANGE",sProperty); O+"ac /r Utility.log(sProperty); 8I#D`yVKc aC\4}i< 9%,;XQ InputStream input = httpConnection.getInputStream(); &9 B_/m3 //logResponseHead(httpConnection); YMzBAf Z7#7N wy4 Os&1..$Nb byte[] b = new byte[1024];
H!eh
J$[ int nRead; -Zy)5NB-tZ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) McP.9v}H0_ { "sbBe73 m nStartPos += fileAccessI.write(b,0,nRead); Lo`F //if(nThreadID == 1) 4M`Xrfwm'[ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); `iYc<N` } :t$A8+A+0 {8CWWfHCD &=w|vB)(p Utility.log("Thread " + nThreadID + " is over!"); z^`]7i bDownOver = true; r_o<SH //nPos = fileAccessI.write (b,0,nRead); 2P}I'4C- } f1cl'; catch(Exception e){e.printStackTrace ();} SGf9U^ds } P;U@y"s } >4)g4~'n! Rt4di^v .h8M //打印回应的头信息 iJnh$jo public void logResponseHead(HttpURLConnection con) h|W%4|]R) { TVkcDS for(int i=1;;i++) zO.6WJ { Rc9<^g` String header=con.getHeaderFieldKey(i); mK\aI if(header!=null) }~zO+Wf2 //responseHeaders.put(header,httpConnection.getHeaderField(header)); Uf2:gLrF Utility.log(header+" : "+con.getHeaderField(header)); Auac>')&Q else #93}E
Y break; [j0w\{ } JMsHK,( } %zljH"F n7iE8SK|k DrS?=C@ public void splitterStop() otq,R6 ^ { %V_eJC""? bStop = true; mw+j|{[ } h$&rE@N| l%PnB
)F ]
09y y } DTy/jaK M&e8zS +Jq`$+%C /* #s^s_8#&e **FileAccess.java mQ,{=C=D *//文件访问(定位,写) # #>a&, package NetFox; ptR import java.io.*; iS-K
~qa H m8y]>$ ;&mxqY8`' public class FileAccessI implements Serializable{ rw*M&qg!z t-EV h~D1p //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 ITvHD-,\ RandomAccessFile oSavedFile; -tP.S1D long nPos; |[WL2< Q
X):T#^V V.j#E1 P public FileAccessI() throws IOException ..$>7y} { a7 )@BzF# this("",0); R0IF' } M,G8*HI" `,-STIh) %8<2> public FileAccessI(String sName,long nPos) throws IOException ;MZbL) { 1.dX)^\ oSavedFile = new RandomAccessFile(sName,"rw"); ZbyG*5iq this.nPos = nPos; >w2f8tW`PP oSavedFile.seek(nPos); 6o(lObfo } enPYj.*/0 c}cG<F %&1$~m0 public synchronized int write(byte[] b,int nStart,int nLen) kA,4$2_o { JP%RTGu int n = -1; .h6Y<
E try{ wRi~Yb? oSavedFile.write(b,nStart,nLen); [oJ& J>U' n = nLen; JU2P%3 } `axQd%:AC catch(IOException e) `D"1
gD}{A { QX+Y(P`vMK e.printStackTrace (); 'A1E^rl]= } *vD/(&pQ1: E6Q91Wz9f Ej5^Y ?-6 return n; v?{vg?vI } d3(+ztmG! 2{gwY85: 2D_6 } D:6N9POB C\/b~HU m&ZJqsZIL /* PbQE{&D# **SiteInfoBean.java ]3 j[3' */ qw)Key package NetFox; %0 qc@4 x' ?.~ ]%||KC!O public class SiteInfoBean { \`&xprqAw %cd]xQpCp i
_8zjj7 private String sSiteURL; //Site's URL k3/4Bt G/ private String sFilePath; //Saved File's Path wvX"D0eVn private String sFileName; //Saved File's Name wH!}qz/ private int nSplitter; //Count of Splited Downloading File Iw*C*%}[Z e00RT1L Z{
%Uw;d public SiteInfoBean() JkJhfFV {//nSplitter的缺省值为5 > `0| X //default value of nSplitter is 5 yq!CWXZ2 this("","","",5); ~6MMErSj } (w}r7`n do*Wx2:R $Q#?`j public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 37~rm { j}"]s/= 6 sSiteURL= sURL; /LSq%~UF sFilePath = sPath; vg5E/+4gp% sFileName = sName; Le_CIk 5YL this.nSplitter = nSpiltter; ?'T"?b< HoMQt3C Qk|( EFQ9 } tI
`w;e%HN "3v7 gtGG -5o?#% public String getSSiteURL() Hc>([?P%t { 8R&z3k;!t return sSiteURL; XpOCQyFnM } z=u~]:.1O i4 P$wlO = SA
4\/ public void setSSiteURL(String value) Bk@bN~B4 { |%n|[LP' sSiteURL = value; 3SmqXPOw } h!Z Z2[ ER/\ +Z#Z B>1M$3`E public String getSFilePath() B6-AIPb { |WQD=J%~( return sFilePath; oJhEHx[f } hcj{%^p {E3;r7 }`#j;H$i public void setSFilePath(String value) kVy"+ZebK { >>/nuWdpO sFilePath = value; "sC$%D<oc } \%Pma8&d R%Kl&c t!NrB X public String getSFileName() % cU-5\xF { [ e$]pN% return sFileName; XA=|]5C } mI2|0RWI)l SB5@\^ rHH#@Zx public void setSFileName(String value) rD_Ss.\^g { 7$;c6_se sFileName = value; "X\q%%P=? } =B 1`R%t .n?5}s+q D86K$IT public int getNSplitter() ~Ay { S^*(ALFPj return nSplitter; >eTf}#s?S } <t% Ao," Fj'\v#h Rh5@[cg% public void setNSplitter(int nCount) h;&&@5@lM { |j\eBCnH3 nSplitter = nCount; u0<d2Y } 3 ATN?V@ } #u!y`lek @Z"QA!OK~c vbW\~xf /* **"zDY*?W **Utility.java #sozXza\G */ ?14X8Mb8W_ package NetFox; F o--PtY`p ,:\zXESy4 &QiAM`MbC= public class Utility { / nC$?w K*hf(w9="% "a 2H8x public Utility() _p3WE9T { cx,u2~43A& ,i1 fv
" 9 ayH:; } Py( w T%w sIP6GWK$ //线程睡眠 b@UF
PE5jy public static void sleep(int nSecond) LGdf_M-f { 0~LnnDN try{ &q kl*#] Thread.sleep(nSecond); wpPxEp/ } c/,|[t catch(Exception e) + xkMW%e< { zwF7DnW<< e.printStackTrace (); ZVCv(J } JC1BUheeb } Y+S~b sZ\i(eIU //日志 @5uyUSt] public static void log(String sMsg) 7]0\[9DyJ { :{e`$kz System.err.println(sMsg); .>cL/KaP } *
S+7BdP
*{L<BB^ ]7Xs=>"Iw public static void log(int sMsg) DY%T`} { pw(*X,gj System.err.println(sMsg); c{r6a=C } l a6e` } NWq [22X
| 6Wcn(h8%* c"jhbH!u4 /* V3.vE, **TestMethod.java e3bAT.P */ [9# #Kb package NetFox; -bG#h)yj $txWVjR?\ *HfW(C$ public class TestMethod { DXw9@b }sm56}_ 3n=cw2FG public TestMethod() et7 T)(k0 { ///xx/weblogic60b2_win.exe 4%Wn}@ try{ yM\tbT/l SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); ?7uStqa //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); pNk,jeo SiteFileFetch fileFetch = new SiteFileFetch(bean); e=NQY8? fileFetch.start(); %QlBFl0a } ;U5x'}%0] catch(Exception e){e.printStackTrace ();} Ib<5u YQw/[ LP-KD } cUX]tiC0 =& |