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/* jK[~dY **SiteFileFetch.java /GzA89N( */ t3~ZGOn package NetFox; Mn-f import java.io.*; =`8%qh import java.net.*; #hA]r. 0X`sQNx |
JmEI9n2 public class SiteFileFetch extends Thread { aaN|g{pX w4: HG1)q\Xd SiteInfoBean siteInfoBean = null; //文件信息Bean syEWc(5 long[] nStartPos; //开始位置 R3HfE*;Z long[] nEndPos; //结束位置 qhKW6v FileSplitterFetch[] fileSplitterFetch; //子线程对象 B{#*PAK= long nFileLength; //文件长度 ,9(=Iu-?1 boolean bFirst = true; //是否第一次取文件 EXdx$I=X boolean bStop = false; //停止标志 rRTAWAs%T File tmpFile; //文件下载的临时信息 8y<NT" DataOutputStream output; //输出到文件的输出流 0 > \m>mE/N //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) QbF!V%+a's public SiteFileFetch(SiteInfoBean bean) throws IOException h83;}> { 'u\my siteInfoBean = bean; &0E>&1`7 //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); *u2pk>y) tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); v4?qI >/ if(tmpFile.exists ()) "kLu]M< { '|zkRdB*Lq bFirst = false; 's.cwB: # read_nPos(); 7XZ5CX& }
$\W|{u` else #E[{ { 6D[m}/?Uy nStartPos = new long[bean.getNSplitter()]; uafSz@` nEndPos = new long[bean.getNSplitter()]; ICJp- } Ez3>}E, L(p{>Ykcc hdi/ k!9[\ tD G[}j } i2a""zac D{Zjo)&tF' .|[5*- public void run() >S3,_@C {
G_fP%ovh //获得文件长度 Dr;-2$Kt/& //分割文件 U"1z"PcV //实例FileSplitterFetch c$cb2V7, //启动FileSplitterFetch线程 c.-/e u^| //等待子线程返回 #].n0[ try{ R]0p L if(bFirst) `N+A8 { bN Ub nFileLength = getFileSize(); Hs%;uyI@$ if(nFileLength == -1) cULASS`, { a(+.rf; System.err.println("File Length is not known!"); ?2Q9z-$ } tBtG- X2 else if(nFileLength == -2) &f}a` /{@ { ZnX]Q+w System.err.println("File is not access!"); *W'F6Hpu } a3&&7n else 2"31k2H[ { y"|QY!fK for(int i=0;i<nStartPos.length;i++) <<43'N+ { nqG9$!k^t nStartPos = (long)(i*(nFileLength/nStartPos.length)); C'HW`rh.^ } C%s+o0b for(int i=0;i<nEndPos.length-1;i++) uF xrv {
:Hk:Goo2 nEndPos = nStartPos[i+1]; .'zXO } ~16QdwK nEndPos[nEndPos.length-1] = nFileLength; 0K\Xxo.= } TM|M#hMS } ?tWcx;h:> <A"T_Rk 7Z-'@m //启动子线程 ?o@5PL fileSplitterFetch = new FileSplitterFetch[nStartPos.length];
E *[dc for(int i=0;i<nStartPos.length;i++) ;Up'+[Vj'C { ~m
,xG fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), zp"Lp>i siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), )!h(o R nStartPos,nEndPos,i); `rt Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); |5uvmK fileSplitterFetch.start(); ;Z\1PwT } jOJ$QT // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), X!} t`` siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); w"s;R8 // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", %M=[h2SN nEndPos = " + nFileLength); m5O;aj* i // fileSplitterFetch[nPos.length-1].start(); v/n4Lp$W^ -E6#G[JJ (1~d/u?2\ //等待子线程结束 7
Jxhn! //int count = 0; sV8}Gv
a //是否结束while循环 XcOfQs boolean breakWhile = false; AXUSU(hU _:hrm%^ o:H^
L,<Tl while(!bStop) oCE=!75 { Vy]y73~ write_nPos(); Vej [wY-c Utility.sleep(500); pwg$% lv breakWhile = true; X?,ly3, AT){OQF8& uFseO9F.2 for(int i=0;i<nStartPos.length;i++) \)\uAI- { LRF_w)^[' if(!fileSplitterFetch.bDownOver) X<\E
'v`~ { !PQ%h/ix breakWhile = false; %2 A-u break; M2K{{pGJ[& } E5a1
7ra } q=NI}k if(breakWhile) i/ED_<_Vg break; 0GUm~zi1 s@USJ4# l)V!0eW //count++; bSOxM/N //if(count>4) gb b2!q6p // siteStop(); %+\ PN } ==zt)s.G(+ =oN(1k^ 3j'A.S System.err.println("文件下载结束!"); ,EkzBVgo } W[pOLc- catch(Exception e){e.printStackTrace ();} I
r8,= } .hBq1p
G?:{9. ( Yt]tRqrh;T //获得文件长度 BMubN public long getFileSize() ~%SmH[i { uvNLm]* int nFileLength = -1; XRZj+muTZ try{ 6f"jl URL url = new URL(siteInfoBean.getSSiteURL()); l(c2 B HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Q5[x2 s_ d httpConnection.setRequestProperty("User-Agent","NetFox"); :O`7kZ]=n ~d0:>8zQR 4*k>M+o/C4 int responseCode=httpConnection.getResponseCode(); ~UrKyA if(responseCode>=400) l@;UwnI { ^$8@B]* processErrorCode(responseCode); @DiXe[kI return -2; //-2 represent access is error J1i{n7f=@ } t)#8r,9c Gv
'; [I*)H7pt} String sHeader; w %4SNR p>4tPI}bf H1?t2\V4 for(int i=1;;i++) ?vmu,y { SM57bN //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); }ufzlHD //Utility.log(in.readLine()); W<f- sHeader=httpConnection.getHeaderFieldKey(i); gN,O)@N'd3 if(sHeader!=null) &cZQ,o { ,;3bPjey if(sHeader.equals("Content-Length")) QO1pwrX< { dTV4 Q`Z nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); F$L2bgQR?' break; 1NHiW
v } I5nxY)v }
j,DF' h else jL9g.q4^ break; o#"U8N%r } KCBA`N8 } L/ L#[ catch(IOException e){e.printStackTrace ();} z7vc|Z|
catch(Exception e){e.printStackTrace ();} 5j8aMnv s /
.wO<l= AnF"+< Utility.log(nFileLength); Sb2hM~ /+V}. _Y{8FN(4 return nFileLength; Hw0S/ytY } M~rN17S XmZs4~\K$G Tu!2lHK; //保存下载信息(文件指针位置) ]=gNA private void write_nPos() tTjadnX { y?6J%~\WP try{ \ltbiDP2 output = new DataOutputStream(new FileOutputStream(tmpFile)); -yP|CZM output.writeInt(nStartPos.length); ~Q+E" " for(int i=0;i<nStartPos.length;i++) ;;4>vF#* { '99rXw // output.writeLong(nPos); Zz,j,w0 Z output.writeLong(fileSplitterFetch.nStartPos); d}RU-uiW output.writeLong(fileSplitterFetch.nEndPos); O]-)?y/ } ZVelKI8> output.close(); ABx< Ep6 } lfJvN catch(IOException e){e.printStackTrace ();} c
-sc*.& catch(Exception e){e.printStackTrace ();} 8+*
1s7{ } v}cTS@0 _p^?_ >(?}'pS8 //读取保存的下载信息(文件指针位置) !W\za0p private void read_nPos() o+],L_Ab { {yzo#"4Oy try{ |o@xWs@m DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Ub,5~I+` int nCount = input.readInt(); ,`pUz[wl nStartPos = new long[nCount]; n 3eLIA{ nEndPos = new long[nCount]; x/S:)z%X for(int i=0;i<nStartPos.length;i++) mm
dQ\\ { WMw|lV r nStartPos = input.readLong(); C
vOH*K' nEndPos = input.readLong(); >g>L>{ } T1-.+&< input.close(); \ u*R6z } [ML|,kq! catch(IOException e){e.printStackTrace ();} ;aj4V<@ catch(Exception e){e.printStackTrace ();} .OM^@V~T } op2<~v0? >;K!yI?0 "W b>y*S private void processErrorCode(int nErrorCode) Q4Zw<IZv5 { H2jF=U"= System.err.println("Error Code : " + nErrorCode); *Cj<Vy } g1H$wU3eu APJVD- !MyCxM6 //停止文件下载 iW?z2%# public void siteStop() qg06*$% { ip+?k<]z bStop = true; Leu93f2 for(int i=0;i<nStartPos.length;i++) &cpqn2Z
fileSplitterFetch.splitterStop(); -=InGm\Y z%q)}$O 9Ro7xSeD } 3j6Am{9 } D_Zt:tzO //负责部分文件的抓取 )p`zN=t **FileSplitterFetch.java <~bvfA= */ ;%Zu[G`C package NetFox; Z#t}yC%^d o.g)[$M8cF z.T>=C import java.io.*; [BTOs4f import java.net.*; "Ng%"Nz oFi_
op Aa`R40 yl public class FileSplitterFetch extends Thread { M:*)l( u.@B-Pf[Eo x+bC\,q String sURL; //File URL gSk0#Jt long nStartPos; //File Snippet Start Position w }=LC#le long nEndPos; //File Snippet End Position pf`vH`r int nThreadID; //Thread's ID XS(Q)\" boolean bDownOver = false; //Downing is over .)c+gyaQ boolean bStop = false; //Stop identical M^&^g FileAccessI fileAccessI = null; //File Access interface 2{xf{)hO? sh/4ui{ !BjJ5m public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException B'-n
^'; { 8\S$iGd this.sURL = sURL; s^"*]9B" this.nStartPos = nStart; zXW)v/
ZD
this.nEndPos = nEnd; &a'mh nThreadID = id; a|-ozBFR fileAccessI = new FileAccessI(sName,nStartPos);//定位 1wy?<B.f } ~,Kx"VK cB6LJ}R $EnBigb! public void run() AQGl}%k_ { XI>HC'.0 while(nStartPos < nEndPos && !bStop) $}JWJ\-] { >x*ef]aS f+%s.[;A Ys>Z=Eky try{ w\1K.j=>|N URL url = new URL(sURL); lNo]]a+_ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); x"P@[T httpConnection.setRequestProperty("User-Agent","NetFox"); qK)T#sh String sProperty = "bytes="+nStartPos+"-"; g!;a5p6 httpConnection.setRequestProperty("RANGE",sProperty); zwJ\F ' Utility.log(sProperty); /[I#3| J%IKdxa owzcc-g InputStream input = httpConnection.getInputStream(); !8*7 {7 //logResponseHead(httpConnection); }_oQg_-7e 5i-VnG
IOY<'t+ byte[] b = new byte[1024]; wln"g,ct int nRead; v(]dIH while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) y`Zn{mQ@[ { kA/yL]m^S nStartPos += fileAccessI.write(b,0,nRead); :{ Lihe~\ //if(nThreadID == 1) ^g=j`f[T // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 6eQa@[.Q } !l$k6,WJi bR<XQHl 1Q7]1fRu Utility.log("Thread " + nThreadID + " is over!"); 0*,]`A= bDownOver = true; $"g'C8 //nPos = fileAccessI.write (b,0,nRead); M7=|N:/_ } nP0rg catch(Exception e){e.printStackTrace ();} +t8#rT ^B } A3.*d:A } n^Q-K}!T/ 6J <.i ZU;nXqjc //打印回应的头信息 tu^C<MV public void logResponseHead(HttpURLConnection con) G%>{Z?!B {
t;}`~B for(int i=1;;i++) Uka(Vr: { qb$M.-\ne String header=con.getHeaderFieldKey(i); $U"pdf if(header!=null) W)AfXy
//responseHeaders.put(header,httpConnection.getHeaderField(header)); :)F0~Q Utility.log(header+" : "+con.getHeaderField(header)); '>GPk5Nq77 else Q[9W{l+ break; _~ 3r*j } A&{eC
C } v}. ~m) Lb~'
I=9D %GGSd0
g public void splitterStop() $ncP#6 { XrJLlH>R4 bStop = true; )3ZkKv;zY } a28`)17z [&)*jc16 @+sYwlA~ } SP;1XXlL aWY#gI{ k{ulu /* &kQj) **FileAccess.java P"|-)d *//文件访问(定位,写) ri49r*_1 package NetFox; 6('CB|ga import java.io.*; T2 TWb w3M F62: 2LS91 public class FileAccessI implements Serializable{ t')%;N >VJ"e` //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 ;Q<2Y# RandomAccessFile oSavedFile; D2f~*!vEnA long nPos; UYGO|lkEU y24/lc Ej<`HbJ'Q public FileAccessI() throws IOException /d>Jkv { p-h(C'PqF this("",0); NYeL1h)l } :ay`Id_tm ]?_V+F Ue=1NnRDkA public FileAccessI(String sName,long nPos) throws IOException cHJ4[x= { Wf=hFc1_@ oSavedFile = new RandomAccessFile(sName,"rw"); |N|[E5Cn this.nPos = nPos; b@B\2BT oSavedFile.seek(nPos); d!y_N&z|( } tcD5"ALJ V]/$ dJ :/6u*HwZh public synchronized int write(byte[] b,int nStart,int nLen) >fp_$bjd { VqS1n int n = -1; :q$.=?X3 try{ %1rN6A!% oSavedFile.write(b,nStart,nLen); ,qIut|C* n = nLen; eIbz`|%3 } 8COGe=+o catch(IOException e) >[<f\BN| { (R!`Z% e.printStackTrace (); ,#hNHFa'JH } )!5"\eys HG3iK #66u<FaG return n; nMOXy\&mI } n66b(6"mO2 UW&K\P Mr@{3do$ } c
LfPSA E0eZal], Dk}txw}# /* 5KW
n >n **SiteInfoBean.java 6>[J^k%~w) */ CIQ9dx7> package NetFox; G5UNW<P2C v %S$5 -pQ0,/}K public class SiteInfoBean { uCj)7>}v{M )jMk~;'r Zig3WiD& private String sSiteURL; //Site's URL +XAM2uN5_. private String sFilePath; //Saved File's Path fwSI"cfM private String sFileName; //Saved File's Name RA}Y$ }^#' private int nSplitter; //Count of Splited Downloading File `rpmh7*WV a lyA#zao| &&Otj-n5 public SiteInfoBean() wpOM~!9R {//nSplitter的缺省值为5 @"afEMd //default value of nSplitter is 5 tY60~@YO& this("","","",5); wdRk+ } l?KP/0` $Q`\- X + B=?|M public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) \n-.gG { 2lxA/.f sSiteURL= sURL; Rc}#4pM8 sFilePath = sPath; 3#idXc sFileName = sName; G$jw#a[L this.nSplitter = nSpiltter; gh%Q9Ni- T8Ye+eP} q]v{o8:U } 2 '8I/>- Sv[+~co<l +[#^c3x2 public String getSSiteURL() N._^\FRyn { (n2=.9k! return sSiteURL; [L?WM>]% } V QbKrnX /Mw0<# oMKG M@V public void setSSiteURL(String value) WISeP\:^ { *-s':('R sSiteURL = value; +`TwBN,kp- } o6 8;-b'n \ZC0bHsA hho\e
8 public String getSFilePath() /re0"!0y { Jg@eGs\* return sFilePath; ORt)sn&~d } Fb^,%K: 8CRwHDB FZfhiIf public void setSFilePath(String value) ^Fwdi#g { 8%;]]{(B sFilePath = value; D`PA@t } LP}j0)n VB~Do?]*k% 3MoVIf1 public String getSFileName() yXro6u?rC { r?WOum return sFileName; UL3u2g;d } e_llW(*l8^ #G("Oh jC'Diu4|Q public void setSFileName(String value) 5,du2 { "SV/'0 sFileName = value; jo"zdb } nc:K!7: #|6M*;l N| J_&G\b.9/ public int getNSplitter() {Yv5Z.L&( { I_na^sh* return nSplitter; ^/7Y3n!|3 } a7e.Z9k! nb(Od,L 9<"l!noy public void setNSplitter(int nCount) ]Waa7)}DM { hJ(S]1B~G nSplitter = nCount; M1XzA
`* } + $/mh } eX o@3/ ksQw|>K SoB6F9 /* 34qfP{9!N **Utility.java !p3vnOX6 */ Xl/2-'4 package NetFox; 19i [DR \`YV)"y" ~ fCi1JH; public class Utility { `^
uX`M/ Wp//SV \PK}4<x} public Utility() u=sZFr@m[ { 6"La`}B(T8 %>,Kd6bdg \_|r>vQ } JPkI+0 kSO:xS0 _N //线程睡眠 ?^
`EI}g public static void sleep(int nSecond) Med0O~T% { $%5!CD1) try{ DZV U!J Thread.sleep(nSecond); oqy}?<SQ } Q5tx\GE catch(Exception e) e `Tssa+ { =kn-F T e.printStackTrace (); \> } jR{Rd}QtQ } p}h9>R rTM0[2N //日志 o`\@Yq$. public static void log(String sMsg) (?~*.g! { [2nPr^ System.err.println(sMsg); (J`EC } *@[+C~U 6q~*\KRk CL"q" public static void log(int sMsg) (W_U<~`t { &(rR)cG System.err.println(sMsg); Z_[jah } TXK82qTdf } R5MY\^H/A {&.?u1C.\ 4$8\IJ7G /* S{c;n*xf **TestMethod.java 0vcM+ }rw */ 3H@29TrJ+ package NetFox; e"v oXe ph=U<D4 bd3q207> public class TestMethod { S&;D |=ljN7]! nWv6I& public TestMethod() M7SVD[7~HM { ///xx/weblogic60b2_win.exe uzWz+atH try{ G>0hi1 SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); IP l]$j>N //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); VHTr;(]hk SiteFileFetch fileFetch = new SiteFileFetch(bean); +v"%@lC}; fileFetch.start(); q<wQ/m } 1<3! catch(Exception e){e.printStackTrace ();} v6+<F;G3y> wM&WR2 ?K^~(D8( } 2^=.jML[ nAW`G'V# D^\2a;[AxA public static void main(String[] args) XLsOn(U\& { doV+u(J~ new TestMethod(); $7bux1L } glP
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