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/* .4^+q9M **SiteFileFetch.java pL1ABvBB */ f;^ +q-Q package NetFox; x3cjyu<K import java.io.*; FzX ;~CA import java.net.*; %]}JWXof ?pZU'5le` C33Jzn's public class SiteFileFetch extends Thread { GP c
B( `z'8"s (|<S%?}J SiteInfoBean siteInfoBean = null; //文件信息Bean fX`u"`o5 long[] nStartPos; //开始位置 AuQ|CXG-\ long[] nEndPos; //结束位置 4Y?2u FileSplitterFetch[] fileSplitterFetch; //子线程对象 R 9`[C long nFileLength; //文件长度 zN!W_2W* boolean bFirst = true; //是否第一次取文件 + )Qu,%2
boolean bStop = false; //停止标志 _">F]ptI; File tmpFile; //文件下载的临时信息 YCiG~y/~ DataOutputStream output; //输出到文件的输出流 ((A@VcX Ob]\t/:%P //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) b5)^g+8)w public SiteFileFetch(SiteInfoBean bean) throws IOException Q,5PscE6&k { _C5i\Y) siteInfoBean = bean; %>Gb]dv? //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); :4V5p
=v- tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 9<?w9D.1 if(tmpFile.exists ()) UCcr> { @>O7/d?O bFirst = false; [T r7SU#x read_nPos(); "'[M~Js } s`=| D'G(= else 8<;. { zK~8@{l}_" nStartPos = new long[bean.getNSplitter()]; 3R<r[3WP nEndPos = new long[bean.getNSplitter()]; ;GM`=M4 }
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# >KuNHuHu m+'1c}n^7 } -lJ|x>PG' A^,ul>! ,JdBVt public void run() HDKF>S_S { mbbhz, //获得文件长度 0bh
6ay4 //分割文件 r5s{t4 ;Ch //实例FileSplitterFetch -Ct+W;2 //启动FileSplitterFetch线程 c9[{P~y //等待子线程返回 T3oFgzoO try{ e=VSO!(rY if(bFirst) A x8 > { >I@&"&d nFileLength = getFileSize(); Q.$8>) if(nFileLength == -1) R?)Yh.vi=t { OE(y$+L3_I System.err.println("File Length is not known!"); D Z*c.|W } /E<Q_/'Z else if(nFileLength == -2) 9e`};DE { aQ(P#n>a2 System.err.println("File is not access!"); d3rjj4N"z } aU;X&g+_) else S*G^U1Sc+ { E|9`J00 for(int i=0;i<nStartPos.length;i++) i}8OaX3x { (.N n|lY<i nStartPos = (long)(i*(nFileLength/nStartPos.length)); 12#yHsk } @lDnD%vZ` for(int i=0;i<nEndPos.length-1;i++) n>u_>2Ikkj { <!m.+ nEndPos = nStartPos[i+1]; <7`k[~)VB } 0"e["q{| nEndPos[nEndPos.length-1] = nFileLength; p+iNi4y@ } >6Pe~J5,: } EgG3XhfS VvIUAn q'S[TFMNE //启动子线程 +Iuu8t fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; A v>v\ :.> for(int i=0;i<nStartPos.length;i++) %G(VYCeK {
uSXnf fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), RDSC @3% siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), EFDmNud`Q nStartPos,nEndPos,i); [@qjy*5p Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); $A~aNI fileSplitterFetch.start(); -`5]%.E&8 } Mo3%OR // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), [gUD + siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); |s/Kb]t // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", r(wf>w3 nEndPos = " + nFileLength); 40=u/\/K // fileSplitterFetch[nPos.length-1].start(); O\Y*s Zq33R` a :*N0 //等待子线程结束 1ik.|T<f0 //int count = 0; &I
~'2mpk //是否结束while循环 ;rL>{UhG boolean breakWhile = false; ?;Sg,.J IY.M#Q] J[l7p6xk while(!bStop) /Zs_G=\> { p}==aNZK write_nPos(); "a;$uW@.6 Utility.sleep(500); O6$,J12l breakWhile = true; S^~"# j{FRD8]V
u `w w for(int i=0;i<nStartPos.length;i++) l$!ExXEZO; { K+/wJ9^B if(!fileSplitterFetch.bDownOver) fCu;n%
{ /NB|N*}O) breakWhile = false; l@w\
Vxr break; Tr>_R%b K } O=} } p5rq>&" if(breakWhile) 93Gj#Mk break; ? .B t. T*B`8P 'S}3lsIE //count++; hB<(~L?A] //if(count>4) ghW`xm87 // siteStop(); _)pOkS } +Goh`!$Rj9 |#t^D.j !ck luj System.err.println("文件下载结束!"); LsGO~EiJ } 3`D*AFQc catch(Exception e){e.printStackTrace ();} Vq#0MY)2gS } a"4X7
D+ g'k m*EV jp_)NC/~g //获得文件长度 bRFZ:hu l public long getFileSize() J s33S) { 1:7fV@jw int nFileLength = -1; d$\n@}8eZp try{ OPUrz ?p2C URL url = new URL(siteInfoBean.getSSiteURL()); {gEz;:!): HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); l(QntP httpConnection.setRequestProperty("User-Agent","NetFox"); (i{ZxWW& qldm"Ul PU\xF t int responseCode=httpConnection.getResponseCode(); 7^.g\Kt? if(responseCode>=400) j?tE# { +5O^{Ce6 processErrorCode(responseCode); $pPc}M[h return -2; //-2 represent access is error &)q>Z!C-l } ^Hf?["m^@ <aFB&Fm ,
DuyPBAms String sHeader; W4qT]m F{ 4k2Izr '%|Um3);0p for(int i=1;;i++) ulg= ,+%r { yN[i6oe //DataInputStream in = new DataInputStream(httpConnection.getInputStream ());
qOD^P //Utility.log(in.readLine()); w=nS*Qy2 sHeader=httpConnection.getHeaderFieldKey(i); YJz06E1 -9 if(sHeader!=null) !6taOT>v { HYdt3GtJ? if(sHeader.equals("Content-Length")) ZBK)rmhMx { @~=d4Wj6 nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); FS)C<T]t break; 8rBa}v9 } &-IkM%_A9 } NU.4_cixb else asvM/ 9 break; 3# 0Nd"/0 } u&`rK7J } F6DVq8f9 catch(IOException e){e.printStackTrace ();} d@ZXCiA}, catch(Exception e){e.printStackTrace ();} /55 3v;l< =yJc pj |P9Mhf N Utility.log(nFileLength); ;l `(1Q/ `]6W*^'PD #Ph8? return nFileLength; ?`
ebi|6 } 1,P2}mYv UBnHtsM P
2x.rukT| //保存下载信息(文件指针位置) xOxyz6B\ private void write_nPos() LDo~ { )ARV>( try{ rV%;d[LB output = new DataOutputStream(new FileOutputStream(tmpFile)); ki`ur%h output.writeInt(nStartPos.length); './qBJ for(int i=0;i<nStartPos.length;i++) $Vs5d=B { ~O/B // output.writeLong(nPos); ? R[GSS1 output.writeLong(fileSplitterFetch.nStartPos); }*P;kV output.writeLong(fileSplitterFetch.nEndPos); ucLh|}jJ5 } R6GlQ G output.close(); bV)h\:oC } ey>tUmt6? catch(IOException e){e.printStackTrace ();} L?(1
[jB4G catch(Exception e){e.printStackTrace ();} cE,,9M@^ } |BbrB[+ v[ "Q.C1#W}. ]K5j(1EN //读取保存的下载信息(文件指针位置) 68qCY private void read_nPos() ,0,&
L { q+4<"b+6G try{ S6yLq|W0 DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Hs.5@ l
int nCount = input.readInt(); ,I f9w$(z nStartPos = new long[nCount]; W\ARCcTQ nEndPos = new long[nCount]; 'A/{7*, for(int i=0;i<nStartPos.length;i++) Co<F<eXe { B]#iZ,Tp nStartPos = input.readLong(); #@M'*X_%}K nEndPos = input.readLong(); 51s 3hX$ } dlV HyCW input.close(); y.Yni*xt/ } !1+!;R@&H> catch(IOException e){e.printStackTrace ();} G>2: WQ/ catch(Exception e){e.printStackTrace ();} 'Hq#9?<2M } $4CsiZ6 gln
X C *U,W4>(B private void processErrorCode(int nErrorCode) S }G3h a { 1[?xf4EMG System.err.println("Error Code : " + nErrorCode); bFIv}c+; } <5c^DA M1Th~W9l p!LaR.8] //停止文件下载 u&Xn#fh public void siteStop() a/q8v P { v`"BXSmp{ bStop = true; u9}LvQh_6, for(int i=0;i<nStartPos.length;i++) #|cr\\2* fileSplitterFetch.splitterStop(); G'_5UP! s(Fxi|v; S#ud<=@!9 } 1u~.^O}J } {*qz<U> //负责部分文件的抓取 m&6I@S2 **FileSplitterFetch.java &,=t2_n */ Wl>$<D4mO[ package NetFox; 9>L{K
KSl@V>!_ \v.YP19 import java.io.*; .t%`"C import java.net.*; <:0d%YB) lz0'E'%{P }/-TT0*6j< public class FileSplitterFetch extends Thread { 0\Myhh~DLE u*!/J R p( [FZ String sURL; //File URL Dj{t[z]$k long nStartPos; //File Snippet Start Position S6|L !pO long nEndPos; //File Snippet End Position Ha!]*wg# int nThreadID; //Thread's ID X;p4/ *U boolean bDownOver = false; //Downing is over 8:Jc2K boolean bStop = false; //Stop identical ')v<MqBr FileAccessI fileAccessI = null; //File Access interface 6[C>"s}Ol 'y:+w{I2o /{\mV(F( public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ( |Xc_nC { ?pp|~A)b this.sURL = sURL; -*"Q-GO this.nStartPos = nStart; %VzCeS9 this.nEndPos = nEnd; JKYkS*.a} nThreadID = id; *}N J fileAccessI = new FileAccessI(sName,nStartPos);//定位 gl"1;C } ~f!iz~ <nT).S>+ x5nw/''[2 public void run() JdA3O{mT) { e^Lt{/ while(nStartPos < nEndPos && !bStop) gPM<LO`;i { 8G
p%Q dI9u:- dpcFS0 try{ 0RGSv!w URL url = new URL(sURL); 7S]akcT/ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ejPK-jxCa/ httpConnection.setRequestProperty("User-Agent","NetFox"); )3KQ
QGi8 String sProperty = "bytes="+nStartPos+"-"; "DNiVL. httpConnection.setRequestProperty("RANGE",sProperty); yBwCFn.uP- Utility.log(sProperty); Nm=\~LP90 D|R,$v: [H2"z\\u InputStream input = httpConnection.getInputStream(); g6 T /k7a //logResponseHead(httpConnection); g_t1(g*s SAw. 6<Wy- l?LP:;S byte[] b = new byte[1024]; _0]{kB.$_ int nRead; B[6y2+6$0 while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) .6nNqGua1 { i\u m;\ nStartPos += fileAccessI.write(b,0,nRead); cv/ //if(nThreadID == 1) _^pg!j[Fy} // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); =M+enSu } zkRL'-
YF<;s^&@u QO%#.s Utility.log("Thread " + nThreadID + " is over!"); (# ;<iu} bDownOver = true; $j!VJGVG //nPos = fileAccessI.write (b,0,nRead); 7IH^5r } ZI'Mr:z4 catch(Exception e){e.printStackTrace ();} an9k2F.) } ~kAen } \a6knd ]@MBE1M C 9:5c@G //打印回应的头信息 e^ygQ<6% public void logResponseHead(HttpURLConnection con) }28,fb
/ { ROB/#Td for(int i=1;;i++) 4chSo.= 4V { KD5} Nk)t String header=con.getHeaderFieldKey(i); }vLK-Vv if(header!=null) 3d@$iAw1< //responseHeaders.put(header,httpConnection.getHeaderField(header)); O*7Gl G Utility.log(header+" : "+con.getHeaderField(header)); /_G^d1T1?L else #RwqEZ break; ?u]%T]W } e)2s2y@zi } QjlwT 2o' Nn;p1n
dN 'cx&:s public void splitterStop() g5*Zg_G/ { M4 :}`p=
bStop = true; V=,VOw4 } ,3`RM$ AK*F,H9 U0kEhMIIf } _jW}p-j H,!3s<1 g
:me:M /* m
pWmExQ **FileAccess.java K8UgP?c;0 *//文件访问(定位,写) elBmF#,j7 package NetFox; _g(4-\ import java.io.*; &_EjP
hZ W 6m
oFn +EWfsKz public class FileAccessI implements Serializable{ aT %A<'O! loLN
~6 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 L[Dr[ RandomAccessFile oSavedFile; FM3DJ?\L- long nPos; J c~{ E W1
qE,%cx ^&W(|R-,J& public FileAccessI() throws IOException {u}Lhv { K9X0/ this("",0); V@xlm
h, } Nuw_,-h Y4 Y;xK" :u7y k@ public FileAccessI(String sName,long nPos) throws IOException uZ-yu|1 { 6-@
X oSavedFile = new RandomAccessFile(sName,"rw"); Y!6,ty' this.nPos = nPos; ]~SOGAFW oSavedFile.seek(nPos); JPX5Jm() } *@|EaH/ :Sx!jx>W )PU?`yLTr public synchronized int write(byte[] b,int nStart,int nLen) #UcqKq { +([
iCL int n = -1; CmNd0S4v try{ NiwJ$Ah~X oSavedFile.write(b,nStart,nLen); #O<2wMb2< n = nLen; gt9{u"o } luyU! catch(IOException e) 6Y|jK<n?H { ",\,lqV e.printStackTrace (); 4$+9Wv } FBYAd@="2 75t\= 6# M8
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return n; z#8d\X/ }
;Q;u^T` Q-X<zn S1<m O- } c8cV{}7Kb {o?+T);Z tkFGGc}w\ /* wsyG~^> **SiteInfoBean.java 6[<*C? */ /N`l
z>^~ package NetFox; S?W!bkfn G &'eP LeA=*+zP[ public class SiteInfoBean { a$7}_kb ?G[<~J3-E @?A39G{ private String sSiteURL; //Site's URL f3>8ZB4 private String sFilePath; //Saved File's Path f#RI&I\ private String sFileName; //Saved File's Name Mt@P}4 private int nSplitter; //Count of Splited Downloading File ?d*0-mhQ, GUJaeFe Y!VYD_'P public SiteInfoBean() ?qeBgkL(B^ {//nSplitter的缺省值为5 Md9b_&' //default value of nSplitter is 5 smpz/1U this("","","",5); :HrD[KT } v(vLk\K7 l:O6`2Z gHLBtl/ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) vV.TK_y { >g%^hjJ sSiteURL= sURL; u.wm;eK[ sFilePath = sPath; GbC-6.~ sFileName = sName; &j\<UPn this.nSplitter = nSpiltter; =#@eDm% bqwQi>^Cw -S]yXZ } A4,tv#z ~RV>V*l } PD]e*z{Z public String getSSiteURL() "p43# { ESk<*- return sSiteURL; o0Z(BTO } +?[,y 78v4cQ Y LFsrqdzJ public void setSSiteURL(String value) x&6SjlDb$K { (vCMff/ Y1 sSiteURL = value; B/S~Jn } \bze-|C r7z8ICX'q ,~
D_T public String getSFilePath() 6N}>@Y5 { pKf]&?FX return sFilePath; |kwBb>V } 5c btMNP 6&pI{ V6.xp{[ public void setSFilePath(String value) 3:Aw.-,i\ { pA(B~9 WQ sFilePath = value; \#P>k;D }
D(}w$hi8 Y<U"}} ew(CfW2 public String getSFileName() 3/P#2&jt { z~TG~_s return sFileName; ;P9P2&c8c } KdT1Nb= 9o<}*L sd;J(<Ofh public void setSFileName(String value) &Q>)3] |p { GY@-}p~it sFileName = value; ;b=3iT-2" } 8}/v[8p E5d?toZ,8" *u$MqN public int getNSplitter() G.2ij%Zz { <}~`YU>=v return nSplitter; !`8WNY?K } #}50oWE G3{t{XkV TqbDj|7`R public void setNSplitter(int nCount) \\80c65- { }cK<2J# nSplitter = nCount; .\kcWeC\ }
2BLcun } 7\sJ=* `=A*ei5 c+l1#[Dnc /* DPuz'e* **Utility.java _qg)^M 6 */ *={`
% package NetFox; x0^O?UR x!klnpGp gxEa?QH public class Utility { ]C|Zs=5 #%CbZw@hJ9 Z:VqBqK public Utility() {@1C,8n; { OR[6pr@ \Q+9sV
5,[ 808E) } ,3_;JT"5 R:zPU //线程睡眠 n:zoN2lC public static void sleep(int nSecond) )i&z!|/2 { +I$c+WfU try{ Z%3] Thread.sleep(nSecond); Ekx3GM_] } o]0v#2l' catch(Exception e) _6a+" p { l[=7<F e.printStackTrace (); YQ}xr^VA } t^0^He$Ot } e)dPv:oK3 l4+!H\2 //日志 +Hz});ix< public static void log(String sMsg) Mq-QWx"P { 8d9&LPv System.err.println(sMsg); k=,,s(]tx } ,}15Cse M17oAVN7D BIf E+L( public static void log(int sMsg) 8$O=HE* { 2j_YHv$I System.err.println(sMsg); ahi lp$v } 3w9j~s } ?bc-?<Xk &fJ92v?%^S Fy|tKMhnc /* T9r"vw **TestMethod.java -"qw5Y_oF? */
7;dTQ.%n package NetFox; y9d[-j
;w mA|&K8H t3ua5xw public class TestMethod { uP<w rlW 5urM,1SQ@ wjk-$p public TestMethod() '< ]:su+ { ///xx/weblogic60b2_win.exe h8;B +#f` try{ V{17iRflf SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); 5b
X*8H
D //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); %M{qr!?uj SiteFileFetch fileFetch = new SiteFileFetch(bean); yX%T-/XJ fileFetch.start(); .<zW(PW } OE87&Cl"{t catch(Exception e){e.printStackTrace ();} y6.}h9~ K;jV"R<9 WF0%zxg ] } CZB!vh0 Qs2E>C yidUtSv=, public static void main(String[] args) FQdz":5 { O9OD[VZk new TestMethod(); DSG tt/n } WAPN,WuW } :.kc1_veYS 点击下载更多相关资料
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