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/* '(9YB9 i **SiteFileFetch.java |F~88j{VN */ 6~:+:; package NetFox; >x?2Fz. import java.io.*; \L#QR import java.net.*; "w^Nu6 &
>b+loF _sm;HH7'* public class SiteFileFetch extends Thread { 4Bo<4 4-, C
>kmIw' o>K &D$J;O SiteInfoBean siteInfoBean = null; //文件信息Bean /d]~ly
@uI long[] nStartPos; //开始位置 #`58F . long[] nEndPos; //结束位置 "8_,tYAH FileSplitterFetch[] fileSplitterFetch; //子线程对象 .P%ym~S long nFileLength; //文件长度 !Ud:?U boolean bFirst = true; //是否第一次取文件 >e_%M50 boolean bStop = false; //停止标志 q4k`)?k9 File tmpFile; //文件下载的临时信息 k1wr/G'H[ DataOutputStream output; //输出到文件的输出流 9i[4"&K fn?VNZ`J
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ^hysC c public SiteFileFetch(SiteInfoBean bean) throws IOException |<2
*v-a { 4[_L=zD siteInfoBean = bean; cI3KB-lM# //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); AJ4r/b} tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Z*h ;e; if(tmpFile.exists ()) :R3P 58> { #ZF>WoC@e? bFirst = false; n\*JaY read_nPos(); ?+Hp?i$1 } kXCY))vnn else \L
%q[ { O$(c.(_$ nStartPos = new long[bean.getNSplitter()]; #'c%
nEndPos = new long[bean.getNSplitter()]; ,M{Q}:$+4 } Rj&qh` U%n,XOJ p70,\&@3 Y^X:vI } Np)ho8zU rx}*u3x=
F1\`l{B,\ public void run() &!OGIYC( { qlEFJ5; //获得文件长度 E{I)]h //分割文件 y,^";7U //实例FileSplitterFetch 1h{>[ 'L //启动FileSplitterFetch线程 \"J?@ //等待子线程返回 Gb?g,>C try{ uX98iJ if(bFirst) EM=xd~H { UIz:=DJ nFileLength = getFileSize(); '6+Edu~Ho) if(nFileLength == -1) j;G[%gi6{ { L2d:.&5 System.err.println("File Length is not known!"); @$EjD3Z- } yqYhe-" else if(nFileLength == -2) 8Kk3_ y { *3P3M}3~\ System.err.println("File is not access!"); HIsB| } FQ0KUb}0 else \w3%[+c { d4% `e&K]' for(int i=0;i<nStartPos.length;i++) ]79~:m[C { P6:;Y5e0 nStartPos = (long)(i*(nFileLength/nStartPos.length)); :b<KX%g } %mJ~F*Dy for(int i=0;i<nEndPos.length-1;i++) -E}>h[;qZ { au,jAk nEndPos = nStartPos[i+1]; 8H7O/n } k)|'JDm nEndPos[nEndPos.length-1] = nFileLength; wy YtpW } |G)Y8 #D } Q
g$($
{v,{x1 })KJ60B //启动子线程 bI#<Ee0nJ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; di--:h/ for(int i=0;i<nStartPos.length;i++) ,TEuM| { )
b/n)%6 fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ENO? ; siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), b~jIv:9T nStartPos,nEndPos,i); epn#qeX Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); !O 4<I_EY{ fileSplitterFetch.start(); 6zv;lx0<D& } amMjuyW // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), '7t|I6$ow siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ix^gAot // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ^Wif!u/HM nEndPos = " + nFileLength); VccM=w%* // fileSplitterFetch[nPos.length-1].start(); 6g}^Q?cpV# &{ DR6 1;aF5~& //等待子线程结束 ;i.I&*t //int count = 0; l<W*/}3 //是否结束while循环 *X~B-a |nJ boolean breakWhile = false; PEfE'lGj F%9cS
: L{Q4=p,A while(!bStop) pF|8OB% { *wViH write_nPos(); jY rym- Utility.sleep(500); ZH_FA breakWhile = true; stX'yya `0Yt1Z& C%0<1mp for(int i=0;i<nStartPos.length;i++) sS-W~u|C { /%62X{=>; if(!fileSplitterFetch.bDownOver) a#^_"GX { u\M4`p!g= breakWhile = false; kNRyOUy break; 'G<}U343=8 } >~h>#{& } L^3~gM"! if(breakWhile) 3b+7^0frY# break; PP!l ,wEM
Jh ZyHIMo| //count++; /.7$`d //if(count>4) ,c@r`
x // siteStop(); cT_uJbP+ } TP~(
r Hr
/W6C 1a5?)D System.err.println("文件下载结束!"); U&,r4>V@h> } 6
M*b 6 catch(Exception e){e.printStackTrace ();} >sn" } 4xv9a;fP ?F)_T )!N2'Ld //获得文件长度 +xn&K"]:3 public long getFileSize() chKF6n { Uy(vELB int nFileLength = -1; 6 lN?) <uQ try{ 8rGl& URL url = new URL(siteInfoBean.getSSiteURL()); axWM|Bw<+ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); mG>T`c|r3 httpConnection.setRequestProperty("User-Agent","NetFox"); o,g6JTh issT{&T -"2 <h:# int responseCode=httpConnection.getResponseCode(); v;K{|zUdB if(responseCode>=400) RcY6V_Qx { nsZDZ/jx processErrorCode(responseCode); 8dr0 DF$c return -2; //-2 represent access is error W3Fy mCI } qRgK_/[] D_O 5k|-V p^p'/$<6_ String sHeader; 2dv|6p mw:3q6 )W[KD,0+j for(int i=1;;i++) QV`X?m
{ eA~J4k_ //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); K{,
W_^ //Utility.log(in.readLine()); ^fA3<| sHeader=httpConnection.getHeaderFieldKey(i); JOA%Y;`<# if(sHeader!=null) }9MW!Ss { Z|]l"W*w if(sHeader.equals("Content-Length")) \B*k_W/r@ { #rh0r` nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); '}wG"0 break; vs5
D:cZ} } {KW&wsI } 6$W -? else :`{9x%o; break; *raIV]W3 } fGu5%T, } 6&i[g catch(IOException e){e.printStackTrace ();} K~7'@\2
? catch(Exception e){e.printStackTrace ();} p+u{W"I` vN{vJlpY ]+}:VaeA Utility.log(nFileLength); VFe-#"0ZO R=2
gtW"r #]?,gwvTf return nFileLength; o%kSR ]V| } gg lNpzj _DNkdS
[[ `l
HKQwu //保存下载信息(文件指针位置) @)aXNQY private void write_nPos() (Q}PeKM?jq { H=JP3ID>{ try{ ^ %~Et>C output = new DataOutputStream(new FileOutputStream(tmpFile)); 3&.TU5]`- output.writeInt(nStartPos.length); FiV^n6-F` for(int i=0;i<nStartPos.length;i++) >GdLEE'w { 9`LU=Xv/ // output.writeLong(nPos); h#(.(d output.writeLong(fileSplitterFetch.nStartPos); :d!i[W* output.writeLong(fileSplitterFetch.nEndPos); tEi@p;Z> } sW>P- output.close(); ?TL2'U|M } }0k"SwX catch(IOException e){e.printStackTrace ();} "uV0Oj9: catch(Exception e){e.printStackTrace ();} +=n
x|:no } -L^0-g Mft0Dj/ 9`nP(~ //读取保存的下载信息(文件指针位置) *X-~TC0
[ private void read_nPos() i~v@ { [8V(N2
try{ TE*> a5C| DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); -~rr<D\ int nCount = input.readInt(); &5kjjQ*HB nStartPos = new long[nCount]; <a4iL3 nEndPos = new long[nCount]; /ieu)m:2 for(int i=0;i<nStartPos.length;i++) ^L*VW
gi9 { 3L
1lq . nStartPos = input.readLong(); ~2, wI<Nz nEndPos = input.readLong(); Og&0Z)% } SdEb[ input.close(); L<[,7V } [)b/uR catch(IOException e){e.printStackTrace ();} [T$$od[. catch(Exception e){e.printStackTrace ();} o
m{n"cg } 0ER6cTo-t 7|{%CckN
ByB0>G''. private void processErrorCode(int nErrorCode)
mCEKEX { T }8r;<P6 System.err.println("Error Code : " + nErrorCode); p ] $ } N#2nH1C PBPJ/puW #b]}cwd! //停止文件下载 ;6\Ski0=l public void siteStop() ;GSfN { :5q*46n bStop = true; @; j0c_^"! for(int i=0;i<nStartPos.length;i++) zm_hLk fileSplitterFetch.splitterStop(); g,z&{pZch gZ79u ~gzpX,{n } hj#+8= } H)?" 8 s //负责部分文件的抓取 ]0/~6f
**FileSplitterFetch.java 34O+#0<y~ */ f|[5&,2< package NetFox; JydQA_ .{Eg(1At }E)8soQR import java.io.*; x""Mxn]gD import java.net.*; ZQ-z2s9U HzO0K=Z=R0 q4IjCu+ public class FileSplitterFetch extends Thread { )}zA,FOA* Qbe{/ o^.s!C%j String sURL; //File URL 8Vg`;_ - long nStartPos; //File Snippet Start Position JOE{&^j long nEndPos; //File Snippet End Position `P)64So-1 int nThreadID; //Thread's ID 5qODS_Eq boolean bDownOver = false; //Downing is over &55uT;7] a boolean bStop = false; //Stop identical |[n|=ORI' FileAccessI fileAccessI = null; //File Access interface A.'`FtV Y9(i}uTi E%v[7 ST public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 5kL# V { C*6bR? I9 this.sURL = sURL; }M"'K2_Z this.nStartPos = nStart; (}7o
a9Q< this.nEndPos = nEnd; CBgFB-!qpe nThreadID = id; 9#=IrlV4 fileAccessI = new FileAccessI(sName,nStartPos);//定位 TJGKQyG$L } 14)kKWG >Gu>T\jpe. I^C
]6D{ public void run() =<tJAoVV { IEKX'+t' while(nStartPos < nEndPos && !bStop) cB{;Nh6" { 4dD@lG~ p44uozbK F@*r%[S/ try{ looPO:bo^ URL url = new URL(sURL); zw;(:fgY# HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ^O\1v httpConnection.setRequestProperty("User-Agent","NetFox"); f>JzG,- String sProperty = "bytes="+nStartPos+"-"; {&AT}7 httpConnection.setRequestProperty("RANGE",sProperty); @eD~FNf-] Utility.log(sProperty); -T="Ml& IU"!oM ^ <P)%Ms InputStream input = httpConnection.getInputStream(); LAjw!QB //logResponseHead(httpConnection); tYxlM! B 0fo[Ev Y&Nv>o_}5 byte[] b = new byte[1024]; hFF&(t2{^ int nRead; '{_tDboY while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) bsS|!KT { JL*]9$o nStartPos += fileAccessI.write(b,0,nRead); er}'}n`@q //if(nThreadID == 1) ^|axt VhMO // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); _rWXcK3cjr } SodW5v a GTX&:5H\t cyn]>1ZM Utility.log("Thread " + nThreadID + " is over!"); #B{F{,vlu, bDownOver = true; <L[)P{jn?p //nPos = fileAccessI.write (b,0,nRead); 2Uw}'J_N } :=KGQ3V~eK catch(Exception e){e.printStackTrace ();} -cS4B//IK8 } J!qEj{ } ]?5@ObG &]A1 _dy
HAOrwJFqU //打印回应的头信息 )"Yah public void logResponseHead(HttpURLConnection con) 8IcQpn# { Xrs~ove1V for(int i=1;;i++) A.*nDl`H { 7
@Qlp$[F String header=con.getHeaderFieldKey(i); 81 Not if(header!=null) iONql7S @ //responseHeaders.put(header,httpConnection.getHeaderField(header)); {nWtNyJpS Utility.log(header+" : "+con.getHeaderField(header)); =<tEc+!T3 else ;(Va_
break; ",oUVl } t$Ji{t- } }Qu
7o ~|jy$*m4A :D7!6}% public void splitterStop() JVYYwA^. { DdW8~yI& bStop = true; &cejy>K }
BNUf0; JVCgYY({KQ /R?uxhV } >}tG^ )os PhdL@Mr MH(g<4>* /* clV/i&]Qa **FileAccess.java 3
+9|7=d *//文件访问(定位,写) TUCpmj package NetFox; l$@lk?dc import java.io.*; Y)5}bmL 7hE=+V8 kKO]q#9sO public class FileAccessI implements Serializable{ ?NeB_<dLa` @K>Pw arl //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 ;f*xOdi*k RandomAccessFile oSavedFile; Jx7^|A long nPos; jl7-"V>j?; 8`<GplO 9&jNdB public FileAccessI() throws IOException -I<`!kH* { 6n g9 o6 this("",0); M6n.uho/ } )f|6=x4 z81!F'x; A}O9e public FileAccessI(String sName,long nPos) throws IOException (CwaOm{g { Cl=ExpX/O oSavedFile = new RandomAccessFile(sName,"rw"); o^J&c_U\3' this.nPos = nPos; 4(]('[M oSavedFile.seek(nPos); 3iwZUqyq } v-@@>?W- M1\/ueOe ->UrWW^ public synchronized int write(byte[] b,int nStart,int nLen) AG%aH=TKp { J(GLPC O$K int n = -1; ponvi42u try{ (d\bSo$] oSavedFile.write(b,nStart,nLen); ;anG
F0x n = nLen; ,@MPzpH } %hh8\5l.: catch(IOException e) (6b%;2k
{ GW#Wy=(_ e.printStackTrace (); L x&ZWF$ } 2sH5<5G' .`9KB3 Mf"B!WU>]B return n; R8)"M(u=l } ;o=mL_[ #(G&%I A|; -W,b*U } J!>oC_0]8 h
!1c(UR ycN_< /* 3lqhjA **SiteInfoBean.java <R$|J| */ >F
v8 - package NetFox; AseY.0 !ywc). ]e &3efJ?8 public class SiteInfoBean { 7Fx8&Z #,Y} r` @Dgo} private String sSiteURL; //Site's URL IYFA>*Es private String sFilePath; //Saved File's Path FdD'Hp+ private String sFileName; //Saved File's Name |9h[Q[m private int nSplitter; //Count of Splited Downloading File ~Q0}>m,S `N0E;=g ~czt= public SiteInfoBean() DDEn63{ {//nSplitter的缺省值为5 [iD!!{6+ //default value of nSplitter is 5 jn'8F$GU this("","","",5); z&8#1' } ?.H*!u+9>
slbV[xR ~F-,Q_|- public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) >JhQ=j { 6{6tg>|L) sSiteURL= sURL; %F7k| Na sFilePath = sPath; Yp8$0KK sFileName = sName; IM+PjYJ this.nSplitter = nSpiltter; R!=XMV3$PH .6*A~%-=[d BeRn9[ } ~H.;pJ{ 8 \a#2Wm %AFy{l public String getSSiteURL() R?(j#bk { GUxhCoxb return sSiteURL; 6ZE]7~X } N78Ev7PN )L?Tq"hy Z=xrjE public void setSSiteURL(String value) bF.Aj8ZQ { qr*/}F6 sSiteURL = value; '#fj) } :MpCj<<[ ?$?Ni)Z 4d#W[ public String getSFilePath() "](~VF[J8 { XxGm,A+>Ty return sFilePath; bFpwq#PDW> } rr*IIG&.5 E4{8 $:q= \,WPFV public void setSFilePath(String value) c~V\,lcI { ??F{Gli"C` sFilePath = value; #KIHq2:.4 } `c icjA@~ B\6\QQ;rUo hE; public String getSFileName() pJmn;XbME { \%)p7PNY return sFileName; ojaZC,} } B\Uj {MHr]A}X\ @M1U)JoQ public void setSFileName(String value) f-Sb:O!V { 5b&'gd^d sFileName = value; 30<^0J.1 } bV"0}|A~K :KQ<rLd g
{00i public int getNSplitter() ;y"DEFs,u { ykZ)`E]P` return nSplitter; <v\|@@X } *StJ5c_kg2 U@9n7F 6 R!0v8 public void setNSplitter(int nCount) uB%`Bx'OW { # RtrHm nSplitter = nCount; G B15 } j9Lc2' } n7S[ F3 J~==<?j: [P^ .=F /* aJub(" **Utility.java xHf
l>C' */ noacnQ_I$ package NetFox; YcIk{_N3 4u<oe_n E]68IuP@' public class Utility { s>kzt1,x v8LKv`I's x{=ty*E public Utility() +;vfn>^!b { /V,:gLpQ 8 }-"&-X WKN\*N < } spJB6n( ;lP) //线程睡眠 1:8ZS public static void sleep(int nSecond) "]sr4Jg= { zgLm~ try{ P5[.2y_qM Thread.sleep(nSecond); >]Y`-*vw& } 5RqkAC catch(Exception e) V97Eb>@ { |W?x6]~.R e.printStackTrace (); I&4|T<j } mp}ZHuf G } "BK&C6] t/HE@xPxI5 //日志 )jnxR${M public static void log(String sMsg) Oq[tgmf { CYz]tv}g: System.err.println(sMsg); 4/$]wK` } 3^8%/5$v CT/`Kg_ `a]
/e public static void log(int sMsg) Zd042
% { MwiT1sB~ System.err.println(sMsg); #*5A]"k } n:HF&j4C, } gQ&FO~cr p!173y,nL [ $B /* !}U&%2<69 **TestMethod.java F e8xOo6 */ 3rs=EMz:w package NetFox; >*EcX 3 -v`;^X Bisht%]^ public class TestMethod { wF}/7b54 y;uk|#qnPS w_6h
$"^x public TestMethod() gzxLHPiw { ///xx/weblogic60b2_win.exe LvB -%@n try{ /,wG$b+ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); Y*J,9 //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); ,myl9s SiteFileFetch fileFetch = new SiteFileFetch(bean); EFhe`` fileFetch.start(); 7R ;! } Wo\NX05-? catch(Exception e){e.printStackTrace ();} (C1]R41' D[ny%9 : " J$vt` } wtaeF+u-R- 8MV=? 'xhX\?mD public static void main(String[] args) 4k}u`8 a { m;k' j@: new TestMethod(); UfXqcyY( } [/6IEt3}B } nx84l 7< 点击下载更多相关资料
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