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/* s
E;2;2u" **SiteFileFetch.java 8VC%4+.FF */ Qx_N,1>S package NetFox; TnQW~_: import java.io.*; l701$>> import java.net.*; w")m]LV ? YluX 80Q%c( i public class SiteFileFetch extends Thread { K=pG,[ChA ^nDa-J$ ~4mRm!DP SiteInfoBean siteInfoBean = null; //文件信息Bean Ua~8DdW long[] nStartPos; //开始位置 7d+0'3% long[] nEndPos; //结束位置 /1Ss |. FileSplitterFetch[] fileSplitterFetch; //子线程对象 v0T?c53? long nFileLength; //文件长度 xokA_3,1F boolean bFirst = true; //是否第一次取文件 t{`krs`` boolean bStop = false; //停止标志 / neY2D6 File tmpFile; //文件下载的临时信息 6
tB\X^ DataOutputStream output; //输出到文件的输出流 bwJluJ,E E[BM0.#bZ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Q~KzcB< public SiteFileFetch(SiteInfoBean bean) throws IOException }
na@gn { S5YEz
XG siteInfoBean = bean; iI &z5Q2 //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ]c]^(C tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 3/]~#y%2 if(tmpFile.exists ()) _p^Wc.[~M { _!w69>Nj bFirst = false; 9Q7342 read_nPos(); Zvra > % } Kb'4W-&u! else hb9HVj { 0vMKyT3 c nStartPos = new long[bean.getNSplitter()]; vTL/% SJ8 nEndPos = new long[bean.getNSplitter()]; `_BmVms } as!P`*@ GXRW"4eF5 sN) xNz RS@G.| } aadw#90 uh>"TeOi @CoUFdbz public void run() ~~Rq$'q} { a :cfr*IsK //获得文件长度 1{1mL-I; //分割文件 9S l5jn //实例FileSplitterFetch ^
q3H //启动FileSplitterFetch线程 *nv^s //等待子线程返回 CdtCxy5 try{ /-(OJN5F^ if(bFirst) ,jl4W+s { vN~joQ=d nFileLength = getFileSize(); JgV4-B0 if(nFileLength == -1) 9hJ
a K { ZkNet>9 System.err.println("File Length is not known!"); 4ti,R' } U r8JG&, else if(nFileLength == -2) k?1e+ \ { y'z9Ya System.err.println("File is not access!"); _94R8?\_V7 } w$""])o, else $4^h>x { \XfLTv for(int i=0;i<nStartPos.length;i++) JbN,K { f'BmIFb# nStartPos = (long)(i*(nFileLength/nStartPos.length)); P0k.\ 8qz } Os!x<r|r for(int i=0;i<nEndPos.length-1;i++) 1@F>E;YjL= { X?(R!=a nEndPos = nStartPos[i+1]; "I @akM$x } -KZ9TV # R nEndPos[nEndPos.length-1] = nFileLength; u(PUbxJ
V } xlh<}Vtp } K~fWZT3] xU(b:D Z st >%U9 //启动子线程 \tP*Pz fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; NceK>::56 for(int i=0;i<nStartPos.length;i++) AKS. XW { |:SIyXGbY fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ^S)t;t@x siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 7ZUS nStartPos,nEndPos,i); ~NO7@muw Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 1O1MB&5% fileSplitterFetch.start();
-$,'|\Y } Owv}lJ // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), WHu[A/##'] siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); JIf.d($
~: // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 8x 8nQ*_ nEndPos = " + nFileLength); ll?Qg%V[t // fileSplitterFetch[nPos.length-1].start(); Nk1p)V SC PO|gM8E1x? cE?p~fq< //等待子线程结束 r[#*..Y //int count = 0; ?KE:KV[Y //是否结束while循环 L(C0236r boolean breakWhile = false; f>m! }F: #IJ6pg>K X +/^s) while(!bStop) \KKE&3= { ~y/qm
[P write_nPos(); "#h/sAIs Utility.sleep(500); `1#Z9&bO breakWhile = true; 9"}5jq4* :W+%jn )q[Wzx_ j< for(int i=0;i<nStartPos.length;i++) s%A?B8, { aPX'CG4m if(!fileSplitterFetch.bDownOver) 14(ct { v|@EuN14< breakWhile = false; 6w_TL<S break; U}l=1B } at\$
IK_ } urQ<r{$x0 if(breakWhile) zXkq2\GHA break; k4` %.; i1 GQ=@ P~PM $e //count++; f9O_M1=|lo //if(count>4) |\)Y,~;P // siteStop(); a|k*A&5u2 } u_b6u@r7 n;>r FS*J8) System.err.println("文件下载结束!"); "
^!=e72 } KbH|'/w catch(Exception e){e.printStackTrace ();} vorb? iVf> } Gsz$H_ o<5+v^mt# wBEBj7(y //获得文件长度 j#YVv c% public long getFileSize() V}JBv$+ko { PeSTUR& int nFileLength = -1; Vw`%|x"Xz try{ th5UzpB4 URL url = new URL(siteInfoBean.getSSiteURL()); *r|13|k HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); #fXy4iL l httpConnection.setRequestProperty("User-Agent","NetFox"); %2^V.`0T K1o&(;l8G "5<YN# int responseCode=httpConnection.getResponseCode(); :zpT Gk8Z if(responseCode>=400) "kKIv|` { 7>EMr}f C processErrorCode(responseCode); ]jR-<l8I- return -2; //-2 represent access is error 8[a N5M] } v7D0E[)~ g<:TsP'| N1U.1~U String sHeader; 'Hu+8,xA ciW;sK8 d-gcXaA-8 for(int i=1;;i++) SUL\|z`5 { oq(W| //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); @scSW5+ //Utility.log(in.readLine()); ?gjkgCbC# sHeader=httpConnection.getHeaderFieldKey(i); >VG*La'c if(sHeader!=null) q}(f9 { 8A'SMJi if(sHeader.equals("Content-Length")) 8sq0 BH { 8SCXA9} nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); -.Zy( break; y-Lm^GW4 } J?jxD/9Yb } _J,*0~O$ else Jt)J1CAYo break; F'ez{B\AX } N_(-\\mq } VuH}@ catch(IOException e){e.printStackTrace ();} tn |H~iF{ catch(Exception e){e.printStackTrace ();} khQfLA `'pfBVBz m=w #l>! Utility.log(nFileLength); 'a~F'FN$ JYLAu4s6 vpdT2/F return nFileLength; ,,?XGx } p.,`3"C1 P|a|4Bb+fW d-I=xpB //保存下载信息(文件指针位置) ifmX<'(9A private void write_nPos() *#GX~3A { _#
&_`bZH try{ %xC}#RDf output = new DataOutputStream(new FileOutputStream(tmpFile)); 6f+@@=Xc output.writeInt(nStartPos.length); !)`m mr for(int i=0;i<nStartPos.length;i++) WGUd@lC~ { HLqDI lL // output.writeLong(nPos); )?(_vrc< output.writeLong(fileSplitterFetch.nStartPos); SN$3cg]z output.writeLong(fileSplitterFetch.nEndPos); ,5x9o"N! } yEVnG`
1
output.close(); <4I`|D3@ } E:P_CDSd] catch(IOException e){e.printStackTrace ();} UUvR>5@n catch(Exception e){e.printStackTrace ();} k7 Ne(4P } xzf/W+.>. ~e5E%bXxC e_FoNT //读取保存的下载信息(文件指针位置) 6g)CpZU private void read_nPos() @2+'s;mUV { WHRBYq_ try{ 02^Nf7DMR DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ;rXZ?" int nCount = input.readInt(); uzS;&-nA nStartPos = new long[nCount]; tHFUV\D;, nEndPos = new long[nCount]; EIOP+9zP for(int i=0;i<nStartPos.length;i++) C`8.8 { k?_uv nStartPos = input.readLong(); k:&B
b" nEndPos = input.readLong(); ]'z 5%' } "}0)~,{xB input.close(); Ls&-8 } -R`nitf catch(IOException e){e.printStackTrace ();} Y{8}z
ZD catch(Exception e){e.printStackTrace ();} $$'[% } FyV $`c$ !]&+g'aC3 ] B>.} private void processErrorCode(int nErrorCode) ~hT(uxU/ { A=np?wc System.err.println("Error Code : " + nErrorCode); 6L-3cxqf\ } o\nFSGkn -I~\ o9Tsyjbj //停止文件下载 :T#f&|Gg; public void siteStop() Mp@dts/| { =ibKdPtTh^ bStop = true; L;
<Pod for(int i=0;i<nStartPos.length;i++) IkQ,#Bsb[ fileSplitterFetch.splitterStop(); hh-sm8 'Ojxzz*tT | 8akp } Iz!]LW } Q%0
N\ //负责部分文件的抓取 M[0NB2`Wp **FileSplitterFetch.java 9]|C$;kw@ */ > v4+@o[~ package NetFox; %'Z`425a D<T:UJ E/ ^N
import java.io.*; 9ol&p> import java.net.*; 9]g`VD6<v 6N/6WrQEeg *tl; 0<n public class FileSplitterFetch extends Thread { ",S146Y+ K>#QC tl=e! String sURL; //File URL D+Z2y1 long nStartPos; //File Snippet Start Position i8=+<d long nEndPos; //File Snippet End Position <qBM+m$|) int nThreadID; //Thread's ID xqv&^,ic boolean bDownOver = false; //Downing is over $/Llzpvny boolean bStop = false; //Stop identical w[u>*I FileAccessI fileAccessI = null; //File Access interface 5#dJga/88 \ns}
M3 _*wlK;` public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException )J
8mn* { (b7',:_U7 this.sURL = sURL; iz27yXHZ~ this.nStartPos = nStart; v
`;Hd8 this.nEndPos = nEnd; 9{-H/YS\_s nThreadID = id; h~ehZJys fileAccessI = new FileAccessI(sName,nStartPos);//定位 ,be$~7qS } @CKMJ^#| q( %)^C RvyCc!d public void run() HgTBON( { XM`&/) while(nStartPos < nEndPos && !bStop) B3E}fQm ) { yB4eUa!1 GGsAisF"N MKX58y{+ try{ s6Il3Kf URL url = new URL(sURL); `X(H,Q}*; HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); )c<[@::i httpConnection.setRequestProperty("User-Agent","NetFox"); /Nhc|x6zQ String sProperty = "bytes="+nStartPos+"-"; * b"aJ<+ httpConnection.setRequestProperty("RANGE",sProperty); V%voe Utility.log(sProperty); E=ObfN"ge "!:)qVL^ t V2o9!N4 InputStream input = httpConnection.getInputStream(); !#PA#Q|cO //logResponseHead(httpConnection); (Y MSe>1L2= AH^ud*3F byte[] b = new byte[1024]; IB^vEY!`6_ int nRead; S) `@)sr while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) .RWq!Z=)3 { aX*7tRn_% nStartPos += fileAccessI.write(b,0,nRead); $]4o!Z //if(nThreadID == 1) +9.GNu // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); y]uBVn'u } !14l[k+\ ">q?(i\ P&*e\"{ Utility.log("Thread " + nThreadID + " is over!"); 'wo}1^V bDownOver = true; X*`b}^T //nPos = fileAccessI.write (b,0,nRead); 6Z;D`X,5 } "||'
-(0 catch(Exception e){e.printStackTrace ();} Rpxg
5 } {#z[iiB } fbJa$ Eg1|Kg\& )IKqO:@ //打印回应的头信息 !#S"[q public void logResponseHead(HttpURLConnection con) XLlJ|xhY-K { P8 R^46 for(int i=1;;i++) VYQ]?XF3i { w=[ITQ|W% String header=con.getHeaderFieldKey(i); 4Dasj8GsV if(header!=null) L8KaK //responseHeaders.put(header,httpConnection.getHeaderField(header)); A%~t[ H Utility.log(header+" : "+con.getHeaderField(header)); "P$')uwE else jOL=vG break; lN_b&92 } gj82qy\: } 0RN 7hpf&` J5}?<Dd: Z*.rv t public void splitterStop() Q>TNzh { +#6f)H(P] bStop = true; R xc } G9CL}=lJ, `*cJc6 0<nW
nD,z } |wuN`;gc"
&0OH:P% q'%!qa+ /* a4",BDx **FileAccess.java G'Uq595'- *//文件访问(定位,写) 7/dp_I}cO package NetFox; b6'ZVB import java.io.*; afjEN
y1 \<\147&)r sfsK[c5bm public class FileAccessI implements Serializable{ 2]H?q!l!O Xet}
J@C //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 T^Hq 5Oy RandomAccessFile oSavedFile; VA%4ssy long nPos; O)`ye5>v 8cj}9}k ngzQVaB9 public FileAccessI() throws IOException dDl_Pyg4K { cpx:4R, this("",0); U \jFB*U } 0VIR=Pbp vSk1/ DOq"=R+ public FileAccessI(String sName,long nPos) throws IOException DK#Tr: 7 { QV _aM2 oSavedFile = new RandomAccessFile(sName,"rw"); _w7yfZLv+ this.nPos = nPos; h-\+# .YP oSavedFile.seek(nPos); UhSaqq } 5w</Ga 9dp1NjOtAc #YSFiy:+r_ public synchronized int write(byte[] b,int nStart,int nLen) }jYVB|2 { isz-MP$:K5 int n = -1; @y,>cDg try{ #W/ATsDt oSavedFile.write(b,nStart,nLen); jr^btVOI#\ n = nLen; ty8E;[' } "4.A@XsY catch(IOException e) ![m6$G{y { ephvvj~zW4 e.printStackTrace (); &Vg)/t; } [2z
>8SL HcHwvf6y VRUA<x return n; JC7:0A^ } P@U2Q%\ l$C
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hr } ;;Jx1Q Pe`jNiI `Yyi;!+0 /*
`dIwBfg_ **SiteInfoBean.java aX.//T:':? */ tQ`|MO&o package NetFox; H1$n6J l<yYfGO Oki{)Ssy public class SiteInfoBean { "fu@2y4^ Gl9,!"A I~,b ZA private String sSiteURL; //Site's URL _BG7JvI private String sFilePath; //Saved File's Path ~zQxfl/ private String sFileName; //Saved File's Name xU
|8.,@ private int nSplitter; //Count of Splited Downloading File {6>$w/+~ )-\qo#0l -K6y#O@@ public SiteInfoBean() -6#
_ t {//nSplitter的缺省值为5 ~g*5."-i //default value of nSplitter is 5 ;G*)7fi this("","","",5); ]qiX"<s>~C } `{Fz igF<].'V 0*6Q8`I public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) FPu$N d&\ { Tj!rAMQk sSiteURL= sURL; ~F>'+9?Sn sFilePath = sPath; fPG3$<Zr sFileName = sName; WpC9(AX5g this.nSplitter = nSpiltter; ?B<.d8i |?ZNGPt ?)7UqVyq } 'AZxR4W J{$c| kT:?1 w' public String getSSiteURL() Tb{RQ?Nw' { UtHloq(r return sSiteURL; @%r"7%tq> } n_*.i1\'w rGay~\ =sk#`,,: public void setSSiteURL(String value) {5c]\{O?[ { j2mMm/kq\ sSiteURL = value; Qki?
>j" } I 1Yr{(ho Nr`v|_U @IOl0db public String getSFilePath() i\=I` Yn+ { Op hD_^ return sFilePath; -:Bgp*S } qpq(< t"YN:y8- #{J+BWP\o public void setSFilePath(String value) P[jh^!<j { lz_ r sFilePath = value; c-4z8T#M^ } q&^H"
fF 6Ia[`xuL 3=%G{L16- public String getSFileName() CW+gZ! { )#sN#ZR$ return sFileName; j3j^cO[ 8v } {d> 6*b cvYKZB :c(#03w*C public void setSFileName(String value) l0tFj>q" { l)V646-O,~ sFileName = value; XY<KLO% } o8SP#ET"n \p!m/2 l|M|;5TW public int getNSplitter() }Ggn2 X { -jVg{f! return nSplitter; $_gv(&ZT } t<%+))b
!(y(6u# Bf" ZmG9 public void setNSplitter(int nCount) SBY0L. { ^!x qOp! nSplitter = nCount; n%!50E6*: } %1)J Rc } zbfe=J4c !e('T@^u6u Wj, {lJ, /* -?Cu-' **Utility.java ^Zlbs
goZ */ zR?1iV.] package NetFox; qipS`:TER {vur9L ]-l4 public class Utility { 2~hQ s:I 8~Cc JC}T*h>Ee public Utility() 6mjD@ { `0-i>> 5'_:>0} kqGydGh*" } u3sr"w& |V^f}5gd //线程睡眠 l I2UpfkBP public static void sleep(int nSecond) l>)+HoD { %m$t'? try{ Ad4-aWH Thread.sleep(nSecond); |WW'qg]Uu } OOYdrv, catch(Exception e) 4 &0MB>m { ,,-j5Y e.printStackTrace (); M->#WGl\B } f|2QI~R } ,.&D{$1W 3w! NTvp //日志 z'0
=3 public static void log(String sMsg) S(: |S( { Az/P;C= System.err.println(sMsg); [ *
!0DW` } <<H'Z H-8_&E?6m Htep3Ol3 public static void log(int sMsg) 1h`# H: { d!"gb,ec System.err.println(sMsg); Z*'_/Grv? } z0T6a15f!P } qnO/4\qq 5'EoB^`8N~ yaAg!mW /* jjg&C9w T **TestMethod.java w# ;t$qz} */ l!IN #|{( package NetFox; Ub[UB%(T OO;I^`Yn |2I
p* public class TestMethod { 4hUUQ;xj Nl{on"il mHNqzdaa public TestMethod() ~~#/jULbV { ///xx/weblogic60b2_win.exe > Qh#pn* try{ ,;yaYF6|/ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); t<cWMx5ra //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); j0S[JpoF SiteFileFetch fileFetch = new SiteFileFetch(bean); ZOL#Q+U fileFetch.start(); 1c`Yn:H^ } pH0MVu(W catch(Exception e){e.printStackTrace ();} v&` n}lS ^{-Z3Yxd &p=(0$0&- } +sXnC\ 07Oagq( ]jV1/vJ-! public static void main(String[] args) u<HJFGLzI { [LS s|f new TestMethod(); qtp-w\#S$ } C(}Kfi@6N } n'@XgUI, 点击下载更多相关资料
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