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/* d5\1-d_uz **SiteFileFetch.java }:mI6zsNj */ c`.:"i"k3 package NetFox; r &[~/m8zl import java.io.*; EyeLC6u import java.net.*; T82_`u YZ>cE# g)9/z public class SiteFileFetch extends Thread { -0`hJ_( n`,Q: O>GP>U?] SiteInfoBean siteInfoBean = null; //文件信息Bean Rv-o__C! long[] nStartPos; //开始位置 39j d}]e long[] nEndPos; //结束位置 #r:`bQ0; FileSplitterFetch[] fileSplitterFetch; //子线程对象 rA`\we) long nFileLength; //文件长度 $ZU(bEUOG boolean bFirst = true; //是否第一次取文件 H1[aNwLr boolean bStop = false; //停止标志 zi
,Rk. File tmpFile; //文件下载的临时信息 h[]N=X DataOutputStream output; //输出到文件的输出流 *LRGfk+h :tqjm: //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) l 3K8{HY public SiteFileFetch(SiteInfoBean bean) throws IOException nf4P2<L! { IMZKlU3 siteInfoBean = bean; 'dzp@-\ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); L@Z
&v'A tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 4.'EEuRw\} if(tmpFile.exists ()) + LwoBn>6 { kTz bFirst = false; oc(bcU read_nPos(); bwJi[xF }
n@Ag`} else eFQi
K6`i { 4Le5Ms/ nStartPos = new long[bean.getNSplitter()]; Z|c9%., nEndPos = new long[bean.getNSplitter()]; Lvq]SzOw } FQFENq''B q,DX{: dX*>?a zmFFBf"< } o0'av+e7 SDIeq fF("c6:w( public void run() j,xPN=+hT { }gW/heUE //获得文件长度 w8
$Qh%J'< //分割文件 6iG<"{/U5 //实例FileSplitterFetch ib_Gy77Os //启动FileSplitterFetch线程 X6 ,9D[Nw //等待子线程返回 ^wa9zs2s;/ try{ bJm0 if(bFirst) ~ ""MeaM8[ { q4i8Sp> nFileLength = getFileSize(); j6vZ{Fx;w if(nFileLength == -1) $:[BB,$ { #!jRY!2Vt System.err.println("File Length is not known!"); >!1 f` } s8[9YfuW else if(nFileLength == -2) 4C%>/*%8> { ?+5{HFx System.err.println("File is not access!"); I_G>W3 } \bic.0- else j/D)UWkR { 8>Z$/1Mh for(int i=0;i<nStartPos.length;i++) EcoUpiL%2 { ^P/D8cXa4 nStartPos = (long)(i*(nFileLength/nStartPos.length)); b@/ON}gX } cJEz>Z6[ for(int i=0;i<nEndPos.length-1;i++) dyzwJ70K { 2^6TrZA7M6 nEndPos = nStartPos[i+1]; (QSWb>np } ?d<:V.1U@ nEndPos[nEndPos.length-1] = nFileLength; GB?#1|, } \GvY`kt3 } AvE^
F1 8(5E<&JP `^L<db^A //启动子线程 \>Rwg=Lh fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; .)>/!|i for(int i=0;i<nStartPos.length;i++) N&APqT { {(}w4.! fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), =t$mbI siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), SU
O; nStartPos,nEndPos,i); `u~ Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); _qt;{,t fileSplitterFetch.start(); ~f10ZB_k>' } \'+{X(] // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), i @9Qb siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); I"sobZ` // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", W}k?gg= nEndPos = " + nFileLength); P}9Y8$Y>U // fileSplitterFetch[nPos.length-1].start(); &JhIn%=- 0ITA3v8{ E#$_uZ4 //等待子线程结束 pq?[ wp" //int count = 0; n,jE#Z.D //是否结束while循环 ./nYXREO| boolean breakWhile = false; udD*E~1q 7 G[ GHc> # )mkD4 while(!bStop) [gkRXP[DGs { ru/zLj: write_nPos(); h0GdFWN Utility.sleep(500); /P!X4~sTM breakWhile = true; wYQ1Z K-5"# 9`CiE for(int i=0;i<nStartPos.length;i++) $qtU { /-{O\7-D if(!fileSplitterFetch.bDownOver) N(-%"#M$ { 'RV\}gqZ breakWhile = false; _`@Xy!Ye break; +z(,A } m0A@jWgd } B#GZmv1 if(breakWhile) !qXq
y}?w break; GQ-e$D@SfB 0|s$vqc udEb/7ZL //count++; c+b:K //if(count>4) DA MpR3 // siteStop(); h w ;d m } *T>#zR{ ;8L+_YCa bOxjm`B< System.err.println("文件下载结束!"); W_BAb+$aF } (#-=y~% catch(Exception e){e.printStackTrace ();} /[|}rqX( } GATP )|Vg/S ;%rs{XO9 //获得文件长度 oX2DFgz public long getFileSize() lYZ@a4TA { GrLM${G int nFileLength = -1; c(Uj'uLc try{ U)`3[fo URL url = new URL(siteInfoBean.getSSiteURL()); cB|Cy{% HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); hDB`t
$ httpConnection.setRequestProperty("User-Agent","NetFox"); 7:VEM;[d Xw*%3'
il IV}8 int responseCode=httpConnection.getResponseCode(); !QQ<Ai!E if(responseCode>=400) k\Z;Cmh> { neB.Wu~WH processErrorCode(responseCode); +2V%'{: return -2; //-2 represent access is error \}u7T[R=` } Owh*KY: igRDt{} ^i`3cCFB< String sHeader; E2q B: z6FbM^;; Pa+AF for(int i=1;;i++) S&
, Ju% { SrQ4y`? //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); &v3D" J //Utility.log(in.readLine()); f#;ubfi"z sHeader=httpConnection.getHeaderFieldKey(i); rY[3_ NG% if(sHeader!=null) hpqHllL { ,NaV
["9$ if(sHeader.equals("Content-Length")) ^Kw&=u { a8bX"#OR&N nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); K4?t' dd] break; JO&;bT< } aR="5{en{: } uGP[l`f|FQ else 9LqMQv"xW break; (5Z8zNH`3 } 8g#
c%eZ } mJGO)u& catch(IOException e){e.printStackTrace ();} V(lK`dY catch(Exception e){e.printStackTrace ();} GG@I!2,_ gfdPx:7^ t3
uB Utility.log(nFileLength); c]%;^) @o4z3Q@ |iwM9oO% return nFileLength; %S
>xSqX } _ bXVg3oDt ,yHzo pjX%LsX\ //保存下载信息(文件指针位置) u
n?j private void write_nPos() 1kvPiV=X> { dt-Qu},8- try{ 0^<Skm27" output = new DataOutputStream(new FileOutputStream(tmpFile)); ~!3t8Hx6 output.writeInt(nStartPos.length); [0% yJH for(int i=0;i<nStartPos.length;i++) NSMjr_ { @b::6n/u // output.writeLong(nPos); OQytgXED output.writeLong(fileSplitterFetch.nStartPos); Zzw}sZ?8 output.writeLong(fileSplitterFetch.nEndPos); 5(iSOsb } lQp89*b?=U output.close(); AND7jEn } m{:" 1] catch(IOException e){e.printStackTrace ();} (!3Yc:~RE catch(Exception e){e.printStackTrace ();} *tTP8ZCQ[ } `G"|MM>P (B>yaM#5 lgCHGv2@ //读取保存的下载信息(文件指针位置) D+ah ok private void read_nPos() hb /8Q { h"VpQhi try{ dAYI D E DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 'WKu0Yi^' int nCount = input.readInt(); "B|nh d nStartPos = new long[nCount]; dxzvPgi? nEndPos = new long[nCount]; S F&M
(=w< for(int i=0;i<nStartPos.length;i++) p<of<YU) { ESC nStartPos = input.readLong(); ql{^"8x nEndPos = input.readLong(); =R8f)UQYx } 8F O1`%8Oe input.close(); $Q`yNEc } "J]f0m= catch(IOException e){e.printStackTrace ();} 4 o3)* catch(Exception e){e.printStackTrace ();} ZfFIX5Qd\ } O_r^oH m+D2hK* BpQ;w,sefq private void processErrorCode(int nErrorCode) pX>ua5Z { ]iz_w`I\ System.err.println("Error Code : " + nErrorCode); q=P
f^Xp } kdK*MUB FX7Cjo#=R S_(&UeTC //停止文件下载 |Q5H9<* public void siteStop() k9*J*7l-m { ax-=n ( bStop = true; ^;V}l?J_s for(int i=0;i<nStartPos.length;i++) QE7+rBa fileSplitterFetch.splitterStop(); 0=N4O!X9 SjZd0H0 3gxf~$)? }
~hS .\h } K:}h\ In //负责部分文件的抓取 (A7T}znG **FileSplitterFetch.java *)j@G: */ (/T+Wpy? package NetFox; XoDJzrL# )x$!K[= ,3w I~j= import java.io.*; >[Xm|A# import java.net.*; sl~b\j =1gDjF9| Q;XXgX#l public class FileSplitterFetch extends Thread { fl!mYCPv #[no~&E C#A@)> String sURL; //File URL )v${&H long nStartPos; //File Snippet Start Position &tlR~?$e* long nEndPos; //File Snippet End Position ,DE(5iDS int nThreadID; //Thread's ID 'b LP~ boolean bDownOver = false; //Downing is over er(8}]X8Q boolean bStop = false; //Stop identical CMC?R,d FileAccessI fileAccessI = null; //File Access interface P/FrE~ MB}:GY? o8w-$
Qb public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Nawp t% { $@_YdZ! this.sURL = sURL; l0gH(28K this.nStartPos = nStart; 6tOP}X this.nEndPos = nEnd; "AT&!t[J nThreadID = id;
bZxv/\ fileAccessI = new FileAccessI(sName,nStartPos);//定位 o:Ln._bj } RM)1*l`!E
]a78tTi Sv.KI{;v$ public void run() \z2vV+f { M#=Y~PU while(nStartPos < nEndPos && !bStop) fy9uLl}h { vad|Rp l Zn?8\ }phz7N9 try{ 'g. :MQ8 URL url = new URL(sURL); '*8 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Xyb8u})p' httpConnection.setRequestProperty("User-Agent","NetFox"); {\P?/U6~f String sProperty = "bytes="+nStartPos+"-"; q A.+U:I8 httpConnection.setRequestProperty("RANGE",sProperty); |c<XSX?ir Utility.log(sProperty); CKJAZ 2 4#TnXxL #o"tMh!f InputStream input = httpConnection.getInputStream(); J09*v)L //logResponseHead(httpConnection); w(aUEWYL wUbmzP. D[V`^CTu byte[] b = new byte[1024]; H(MB5 int nRead; #X4LLS]VV while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) a a4$'8s { !&Z*yH nStartPos += fileAccessI.write(b,0,nRead); uRP
Ff77 //if(nThreadID == 1) 2q12yY f // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); N0]z/}hd@ } B<A:_'g _wMc*kjJO mG
X\wta Utility.log("Thread " + nThreadID + " is over!"); X88F>1} bDownOver = true; 8a7YHUL<3i //nPos = fileAccessI.write (b,0,nRead); QT_Srw@ } L+_8QK < catch(Exception e){e.printStackTrace ();} ^n
t~-% } JFe4/
V } g .3f2w $,!hD\a p#)e:/Qy //打印回应的头信息 ,Ak ^nX public void logResponseHead(HttpURLConnection con) Nc,*hsx' { fQxSMPWB for(int i=1;;i++) GM:,CJ? { 4>l0V< String header=con.getHeaderFieldKey(i); &/HoSj>HS if(header!=null) ;D:=XA% //responseHeaders.put(header,httpConnection.getHeaderField(header)); )#C_mB$-# Utility.log(header+" : "+con.getHeaderField(header)); S45'j(S= else OthG7+eF break; $\+"qs) } Tu==49 } JW-|<CJ E{<?l 7t "=FIFf public void splitterStop() anLbl#UV { Q<dba12 bStop = true; P?xA$_+ } 6F,/w: %z=`JhE"Q jn~!V!++ } %t q& Kf|0*c (s&ORoVGn /* g083J}08 **FileAccess.java K@HLIuz4t *//文件访问(定位,写) Ln:lC(
' package NetFox; ej<`CQ import java.io.*; :|=- (z h5j<u tO7I&LNE public class FileAccessI implements Serializable{ -E:(w<]; n7@j}Q(&? //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 @$Yb#$/ RandomAccessFile oSavedFile; rj}(muM,R long nPos; D6Dn&/>Zp Rw/Ciw2@? nVNs][ public FileAccessI() throws IOException @Zj&`/ { HXyFj this("",0); Q@3B{ } _g65pxt =Z &u("|O)w$ sLNNcj(Cy> public FileAccessI(String sName,long nPos) throws IOException ZxI]I1) { &eU3(F`. oSavedFile = new RandomAccessFile(sName,"rw"); f
P+QxOz this.nPos = nPos; `6UtxJSx oSavedFile.seek(nPos); W5|j1He& } ) ,yH= 6 IOX:yxj 2HSb.&7-G public synchronized int write(byte[] b,int nStart,int nLen) l`* ( f9Q { 4Q$!c{Y
r int n = -1; h+5@I%WX try{ LGAX"/LX oSavedFile.write(b,nStart,nLen); 9]Lo n = nLen; `wf|u M } Ep<YCSQy$i catch(IOException e) RU7!U mf { QsM*wT&aa e.printStackTrace ();
A=0@UqM } Qd?CTYNsv *l:&f_ngV fwy"w return n; Q4=|@|U0 } ;sCU[4 U[ bgu#P; 0_Lm#fE U } q1jN]H !8o\.uyi MJA~jjy4 /* z$66\/V'] **SiteInfoBean.java =D}4X1l */ ~x\Cmu9` package NetFox; Z~_8P g9`[Y~ YQ+^ public class SiteInfoBean { loBtd%wY TH YVT%v @"w2R$o private String sSiteURL; //Site's URL ,&[7u9@ private String sFilePath; //Saved File's Path CB6 o$U private String sFileName; //Saved File's Name TqAtcAurM private int nSplitter; //Count of Splited Downloading File (U _wp's jAZ >mo[ 1g~y]iQ public SiteInfoBean() A*R n<{U {//nSplitter的缺省值为5 o _(0 //default value of nSplitter is 5 7pP+5&* this("","","",5); l0. FiO@_Q } #3.\j"b z(rK^RT h07eEg public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) /7x\;&bc { HgaZbb>' sSiteURL= sURL; ^j [Ku sFilePath = sPath; X% X$Y6 sFileName = sName; Hv8H.^D> this.nSplitter = nSpiltter; LJj=]_ x^X$M$o,l mbGcDG[HQ } *Wso3 6an l=xt;c! ^EuW(
" public String getSSiteURL() d+Ds9(gV { R3Ee%0QK return sSiteURL; 4~*Y];!Q } cLAesj 6{8/P'@/Zz >J@egIKzP public void setSSiteURL(String value) 05"qi6tncz { g}m+f]| sSiteURL = value; VyY.r#@ } +YuzpuxjJ Q-(Dk?z{ F3Dt7q public String getSFilePath() A4
5m)wQ { Mc:bU return sFilePath; 3p&jLFphL } ||XIWKF<n2 nEyIt&>9 *Q5x1!#z# public void setSFilePath(String value) Z}+yI, { 6"+8M 3M l sFilePath = value; /BT1oWi1y } =U
c$D* <wa(xDBw `36N
n+A public String getSFileName() n]v7V&mj\ { {@45?L(' return sFileName; =zOeb/ } JjQVzkE xDUaHE1co T/NjNEd# public void setSFileName(String value) LXNQb6! { }PZ=`w*O sFileName = value; 79wLT\& } _ eiF@G 8%-%AWF] Hd374U<8]T public int getNSplitter() BGzO!s*@j { hlC%HA return nSplitter; O|7yP30?M } R6<4"?*r Cg3ODfe H-2_j public void setNSplitter(int nCount) 9n 6fXOC { 3q?5OL^$ nSplitter = nCount; q]XHa ," } fhr-Y'
} )!sa)\E? e#khl9j*bt $rB6< /* Y"*:&E2)r **Utility.java puF%=i */ "H?QqrKx package NetFox; R8 jovr v?)SA]; r[!(?%>j public class Utility { uREu2T2 aq kix"J K:_($X] public Utility() {R8=}Qo { [e1L{ _*l
*KJ7nRKx(w Nxi)Q$ } 4TVwa(cB ;wgFr.#hp@ //线程睡眠 VaJfD1zd1 public static void sleep(int nSecond) Onw24& { c{VJ2NQ+ try{ 0m&3?"5u Thread.sleep(nSecond); ,E9d\+j } anC+r(jjg9 catch(Exception e) eO[c l B { 8^vArS; e.printStackTrace (); P#*n3&Uu } *Ru2:}?MpS } %E.S[cf%8& 4|f}F //日志 `)tA
YH public static void log(String sMsg) HTR1)b { H#Q;"r 3 System.err.println(sMsg); M BVOfEMj } |7c`(. nh0&'hA agT7=hX]. public static void log(int sMsg) j3 P$@< { eM }W6vIn System.err.println(sMsg); 8[R1A } m8AAp1= } l#xw.2bo
g`3H(PVg EY$?^iS /* DY.58IHg1 **TestMethod.java l{Er+)a */ u E.^w;~2= package NetFox; _Wma\(3$ +>#e=nH M5O'=\+,F public class TestMethod { }"4roJ oIxH 3T x8/us public TestMethod() h[Mdr { ///xx/weblogic60b2_win.exe s.rT] try{ Ay%:@j(E SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); De]^&qw( //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); ?!7
SzLll SiteFileFetch fileFetch = new SiteFileFetch(bean); c,$mWTC fileFetch.start(); WjOH/$( } choL%g} catch(Exception e){e.printStackTrace ();} c/'M#h)" wko2M[ 4m /TW) } HfZtL 2fbU-9Rfn Kj!Y K~~ public static void main(String[] args) OL9]*G?F { +* D4( new TestMethod(); F[]& |