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/* ~ oq.y n/1 **SiteFileFetch.java E[zq<&P@ */ fk1d iB package NetFox; aCIz(3^ import java.io.*; v^p* l0r6: import java.net.*; <pKOFN%m 55] MRv 'gD./|Z0 public class SiteFileFetch extends Thread { Qz2jV 3i4m!g5Z? 0Ny +NE:6M SiteInfoBean siteInfoBean = null; //文件信息Bean 2VX9FDrnk long[] nStartPos; //开始位置 HB*BL+S06 long[] nEndPos; //结束位置 'Ce?!UO FileSplitterFetch[] fileSplitterFetch; //子线程对象 #}~?8/h! long nFileLength; //文件长度 0a@tPskV boolean bFirst = true; //是否第一次取文件
z.2UZ%: boolean bStop = false; //停止标志 rxJl;!7G File tmpFile; //文件下载的临时信息 S+mBVk"-~S DataOutputStream output; //输出到文件的输出流 I1dOMu9 d>#X+;-k //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) g1 y@z8Z{ public SiteFileFetch(SiteInfoBean bean) throws IOException O ]-8 % { K *1]P ar; siteInfoBean = bean; 4"iI3y~Gw //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); *r9D+}Y(4 tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 86?~N if(tmpFile.exists ()) LtKR15h, { a%6=sqxE bFirst = false; X2,v'`U5& read_nPos(); Y-+Kf5_[ } VJCj=jX else 3G^A^]h { i\.(6hf+ nStartPos = new long[bean.getNSplitter()]; 8-kR {9r nEndPos = new long[bean.getNSplitter()]; $`vXI%|. } m@L>6;* If 'N0^'W meThjCC Z
R~2Y?Wt9 } 1sJz`+\ E6T=lwOZ B !rb*"[ public void run() VtU2& { ^ AZv4H*~ //获得文件长度 P-yVc2YH //分割文件 C+t|fSJ //实例FileSplitterFetch d}Y#l}!E6 //启动FileSplitterFetch线程 sE{5&aCSR //等待子线程返回 GH3RRzp r try{ Y[rCF=ZVH if(bFirst) od,,2pwK+ { U!BZsVx nFileLength = getFileSize(); ,LLx&jS if(nFileLength == -1) &Akw V- { =W"T=p*j System.err.println("File Length is not known!"); !kh: zTP } <9$Pl%: else if(nFileLength == -2) +I*a=qjq { oGbh* System.err.println("File is not access!"); "dYT>w } YETGq- else W!=ur,F+ { ).Iifu|ks for(int i=0;i<nStartPos.length;i++) %Br1b6 V { {`>pigo nStartPos = (long)(i*(nFileLength/nStartPos.length)); ,#0#1k<Dm } #W_-S0>& for(int i=0;i<nEndPos.length-1;i++) dww4o~hO { FS!vnl8` nEndPos = nStartPos[i+1]; or7l}X } ew c:-2Y^ nEndPos[nEndPos.length-1] = nFileLength; oJE<}~_k } N>sHT
=_ } :Z83*SPc u2I@ fH/ a|]}uFr //启动子线程 D&],.N fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; c%
?@3d for(int i=0;i<nStartPos.length;i++) P/k#([:2 { G \$x. fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), =4!m]*y siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ^0I" nStartPos,nEndPos,i); M3JV^{O/DV Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); `bLJwJ7 fileSplitterFetch.start(); 9"M-nH*< } -&%!
4(Je // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), +lf`Dd3 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); wjOJn] // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", (&_~eYZU nEndPos = " + nFileLength); e%7#e%1s // fileSplitterFetch[nPos.length-1].start(); |a'$v4dCF $HRl:KDdP~ (~"#=fs.L //等待子线程结束 :#N]s //int count = 0; T/hz23nH //是否结束while循环 #.,LWL] boolean breakWhile = false; $L ]M3$\9 Y%zWaH I}}>M# while(!bStop) }`76yH^c { Wk
}}f|O0 write_nPos(); $g,v]MW Utility.sleep(500); ZlcEeG breakWhile = true; c;#gvE 1k$5'^]^9] g<8Oezi 65 for(int i=0;i<nStartPos.length;i++) 2';{o=TXV { .`&k` if(!fileSplitterFetch.bDownOver) 7WNUHLEt { Jr(Z Ym' breakWhile = false; @v\8+0 break; ArT@BqWd } .rl Lt5b% } a`U/|[JM if(breakWhile) }/L#<n`Z break; *A0d0M]cg R|*Eg,1g - IfP?+yPa //count++; t7e7q"+/ //if(count>4) ow'CwOj$ // siteStop(); %w/vKB"nO } b<E78B+Aax u})8) sM9utR System.err.println("文件下载结束!"); nHLMF7\ } xd4~[n\hm catch(Exception e){e.printStackTrace ();} =W gzj|Kr } emT/H95|, )]zsAw`/ M~.1:%khM //获得文件长度 owA.P-4 public long getFileSize() Y44[2 :m { jZe/h#J)[ int nFileLength = -1; @F|pKf:M+ try{
-AB0uMot URL url = new URL(siteInfoBean.getSSiteURL()); ''p<C)Q HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); aZq7(pen httpConnection.setRequestProperty("User-Agent","NetFox"); q{L-(!uz7_ xd+aO=)Td `"#hhKG int responseCode=httpConnection.getResponseCode(); F&7^M0x\ O if(responseCode>=400) !2.eJ)G { n3\~H9 processErrorCode(responseCode); q{xF7}i return -2; //-2 represent access is error
JL7;l0# } Y/L*0M.< 'sa>G c?Mbyay String sHeader; +u`4@~D# o"p['m*g nIfp0U* for(int i=1;;i++) Jpn= ^f[rm { Z~;rp`P //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); K[Vj+qdyl //Utility.log(in.readLine()); R I:kp.V sHeader=httpConnection.getHeaderFieldKey(i); NE|Q0g if(sHeader!=null) `r %lB { P!XO8X 1F if(sHeader.equals("Content-Length")) +$#h6V { Q5Epq
sKyC nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); -\25&m!+ break; sDBwD%sb } $gCN[%+j } *bzqH 2h8 else KC8 break; Io{BO.K*Y } {f;DhB-jj } PE?ICou catch(IOException e){e.printStackTrace ();} _]L]_Bh catch(Exception e){e.printStackTrace ();} Zlrbd D"IxQ2}k )OK"H^}f Utility.log(nFileLength); 3XDuo|( i*T
-9IP 00yWk_w return nFileLength; ;"8BbF. } tHr4/
~^fb`f+% D/wJF[_ //保存下载信息(文件指针位置) y=AF
EP private void write_nPos() Th$xk9TK^@ { rkz84wDx try{ !iK{q0 output = new DataOutputStream(new FileOutputStream(tmpFile)); CXTtN9N9 output.writeInt(nStartPos.length); p!\GJ a", for(int i=0;i<nStartPos.length;i++) `r0lu_.$]4 { G7r .Jm^q // output.writeLong(nPos); g`)0
wP output.writeLong(fileSplitterFetch.nStartPos); lWBewnLKE output.writeLong(fileSplitterFetch.nEndPos); LyG`q3@ } 4P#4RB output.close(); 3jHE,5m } 7W>(T8K X\ catch(IOException e){e.printStackTrace ();} Qm_;o( catch(Exception e){e.printStackTrace ();} |<uBJ-5 } g@Rs.Zq j' b0sve|? {e0(M*u //读取保存的下载信息(文件指针位置) moZeP#Q% private void read_nPos() pdjRakN { Y&bO[(> 1 try{ (B03f$8}*_ DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); E
H|L1g int nCount = input.readInt(); s}bLA>~Ta nStartPos = new long[nCount]; 0IBQE nEndPos = new long[nCount]; UUF]45t> for(int i=0;i<nStartPos.length;i++) S WyJ` { e7plL^^` nStartPos = input.readLong(); pwV~[+SS_ nEndPos = input.readLong(); =,X*40= } Mo oxT7 input.close(); D$E#:[ } hDc2T catch(IOException e){e.printStackTrace ();} 7\gu; [n catch(Exception e){e.printStackTrace ();} $f>(TW } q(Ow:3& bH!_0+$P q#\B}'I{ private void processErrorCode(int nErrorCode) OjrZ6 { i`?yi-R& System.err.println("Error Code : " + nErrorCode); \[%_ :9eq } RMdU1@ j]aIJbi G3h"Eo?>g //停止文件下载 PH'n`D# public void siteStop() XV,ce~ro[ { IYa(B+nB) bStop = true; e*d lGK3l for(int i=0;i<nStartPos.length;i++) dJlK'zK fileSplitterFetch.splitterStop(); U8@P/Z9 p&D7&Sb[ x6^FpNgQ } 9#kk5 )J } O'QnfpQ*9 //负责部分文件的抓取 ,fo7.
h4{ **FileSplitterFetch.java PF+Or */ 9D;ono3 package NetFox; [w)KNl O3pd5&^g .')^4\ import java.io.*; Dw
y|mxlFn import java.net.*; -
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public class FileSplitterFetch extends Thread { GH&5m44 ~RZN+N ^==Tv+T9U String sURL; //File URL JOs
kf( long nStartPos; //File Snippet Start Position {wO.nOB long nEndPos; //File Snippet End Position rd"!&i int nThreadID; //Thread's ID j HObWUX boolean bDownOver = false; //Downing is over 2EO9IxIf boolean bStop = false; //Stop identical ce719n$
FileAccessI fileAccessI = null; //File Access interface ZZc^~ D&]xKx xn)F(P 0kv public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException j)Z0K$z= { \g v-2., this.sURL = sURL; )Lk2tvr this.nStartPos = nStart; Bx.hFEL this.nEndPos = nEnd; dKL9}:oUa nThreadID = id; z80*Ylx fileAccessI = new FileAccessI(sName,nStartPos);//定位 /q/^B>] } Oi{J}2U K7/&~;ZwT `m$,8f%j6_ public void run() $U(D*0+o/ { mxe\+j# while(nStartPos < nEndPos && !bStop) <TSps!(# { !>&G+R+k J%fJF//U a
FWTm,) try{ OC\cN%qlw URL url = new URL(sURL); ^;?w<9Y HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); SCfk!GBVD httpConnection.setRequestProperty("User-Agent","NetFox"); ETR7%0$r String sProperty = "bytes="+nStartPos+"-"; S(rnVsW%Ki httpConnection.setRequestProperty("RANGE",sProperty); B}aW y &D Utility.log(sProperty); F)19cKx7 0rif,{" >:0N)Pj InputStream input = httpConnection.getInputStream(); auM1k] //logResponseHead(httpConnection); 7
Rc/<,X ?q0a^c?A^ nhd.c2t\ byte[] b = new byte[1024]; M3dUGM int nRead; ZvK3Su)f1 while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) @(."[O: { -W:@3\{ nStartPos += fileAccessI.write(b,0,nRead); 5r;)Ppo //if(nThreadID == 1) dkg+_V! // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); E^~ {thf } &]anRT# (X (:h\^
t*Z-]P Utility.log("Thread " + nThreadID + " is over!"); ?wjk=hM2 bDownOver = true; 0\eSiXs //nPos = fileAccessI.write (b,0,nRead); Cq-99@&; } Eok8+7g0& catch(Exception e){e.printStackTrace ();} z_8Bl2tl } =CL,+ } psS^ $-E<{ "'>fTk_ //打印回应的头信息 r8A'8g4cM public void logResponseHead(HttpURLConnection con) FtWO[*# { rAgp cp} for(int i=1;;i++) d Z+7S`{ { DnN+W String header=con.getHeaderFieldKey(i); "k),;1 if(header!=null) j}8^gz] //responseHeaders.put(header,httpConnection.getHeaderField(header)); }Fu2%L> Utility.log(header+" : "+con.getHeaderField(header)); t=[/L]! else QEmktc1 7 break; E#kH>q@K`$ } 5F:\U } U)z1RHP|z JBISA _Y dtXtZ!g2 public void splitterStop() s GrI%3[e" { %H}M[_f bStop = true; 2 m72PU<. } dE(d'*+a p%OVl[^jp $=C `V } g](&H$g Af^9WJ l8lJ & /* *LvdrPxU= **FileAccess.java UG6\OgkL+ *//文件访问(定位,写) +ERuZc$3, package NetFox; paxZlA
o import java.io.*; eE{
2{C m^^#3*qa )P.,h&h/ public class FileAccessI implements Serializable{ sr:hRQ27 \ow(4O# //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 q?f-h<yRQ RandomAccessFile oSavedFile; -BsZw.
7P long nPos; Mv7tK
l ~"h V-3U O:dUzZR[' public FileAccessI() throws IOException 7[}WvfN8# { ^brh\M,:@ this("",0); oK&G } a$LoQ<f_ TQ5kT?/{ 5%DHF-W) public FileAccessI(String sName,long nPos) throws IOException 8JO(P0aT { n|PW^kOE/ oSavedFile = new RandomAccessFile(sName,"rw"); 9|9/8a6A this.nPos = nPos; YDEb MEMd/ oSavedFile.seek(nPos); li~=85 J } [,|4%Y .O
PBET(gv 1ay{uU!EL public synchronized int write(byte[] b,int nStart,int nLen) L-e6^%eU { vNU[ K%U int n = -1; fqol-{F.V try{ D6EqJ,~ oSavedFile.write(b,nStart,nLen); AgdU@&^ n = nLen; ulk yP } o* QZf*M catch(IOException e) P{8<U8E { a$Ghb] e.printStackTrace (); M!\6Fl{ b } J!zL)u| -"xC\R -}Rh+n` return n; 'gk^NAG2^E } N&u(9Fxn /IC]}0kkp ,9.NMFn } 0fR?zT? D\sh
+}" BagV\\#v4 /* mpl^LF[ **SiteInfoBean.java `P;uPQDzZ3 */ [wUJ~~2# package NetFox; mS]soYTQ '_xa>T} }i\_`~ public class SiteInfoBean { 4Y@q.QP r / L zM'2opiUY private String sSiteURL; //Site's URL gac/%_-HH7 private String sFilePath; //Saved File's Path 0-U%R)Q private String sFileName; //Saved File's Name TI3@/SB> private int nSplitter; //Count of Splited Downloading File Q!W+vh =5h,ZB2A M,P:<-J public SiteInfoBean() hQDl&A {//nSplitter的缺省值为5 R"QWap} //default value of nSplitter is 5 f<@`{oP@ this("","","",5); $`/F5R! } 6^nxw>- 4n.EA,:g:( Qexv_:C public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) cA+O]",} {
NW?h~2 sSiteURL= sURL; ?yvjX90 sFilePath = sPath; cX48?srG sFileName = sName; Z`@< O% this.nSplitter = nSpiltter; Pv3 e*I(( [2zS@p =]sM,E,n } 4)d#dy::\ .A<n2- ':T6m=yv public String getSSiteURL() TfFH!1^+ { %>:d5"&Lbs return sSiteURL; lQer|?# } ,wk %)^ >2<
Jb!f& 0bR})}a+Yg public void setSSiteURL(String value) :FI4GR*? { (t-JGye> sSiteURL = value; mRY~)<!4& } n)>nfnh +~M`rR* |'12Kv]#Xa public String getSFilePath() j;i7.B"[ { V?Ye^-29 return sFilePath; K#'{Ko } a(eUdGJ {;Y2O.lV
=uIeur public void setSFilePath(String value) Pb@9<N Xm' { KEvT."t sFilePath = value; \g\, } 8@4)p.{5I *'ex>4^ 5TcirVO82 public String getSFileName() +J%9%DqF { 'B$qq[l]S return sFileName; E.OL_ \ } n/-d56 KdkZ-. 5y|/}D> public void setSFileName(String value) a`uHkRX
)U { {t<U:*n2 sFileName = value; `$N AK } L\H,cimN +;wu_CQu <Q?X'. public int getNSplitter() <YBA
7i { *ZA.O return nSplitter; bcZ s+FOPd } A{b?ZT~2] Dz>v;%$S- [1 gWc`# public void setNSplitter(int nCount) xk8P4`;d$ { &+V|L dh nSplitter = nCount; /I3>u } Q[N6# C:(4 } WD,iY_'7u^ <xQHb^: w6[uM%fHG /* #97w6,P+ **Utility.java Up kw.`D` */ 6@@J>S> package NetFox; H{3A6fb< :If1zB) 7ehs+GI public class Utility { F82_#|kpS Jd>"g9 6?v)Hb}J%d public Utility() s'|^ 6/ { AHre#$`97 L0O},O 7-hSso.' } S+EC!;@Xg -h<Rby //线程睡眠 SMdQ,n1] public static void sleep(int nSecond) amK.H" { b:uMON,H try{
_A %8oYS Thread.sleep(nSecond); >O:j.(*! } @4N@cM0
catch(Exception e) K)C9)J< { %l7|+%M.{ e.printStackTrace (); n/fMq,<8 } %2)'dtPD~ } lC ^NhQi *?Sp9PixP //日志 jI(}CT`g public static void log(String sMsg) y84=Q { )q48cQ System.err.println(sMsg); ,U#$Qb 12 } w1+xlM,,9 r-$SF5uv |?Z;tAF! public static void log(int sMsg) `|i[*+WC { GX+o A] System.err.println(sMsg); {$ghf" } KC-q] } 7VdG6`TDR P+Ta|- (Wu_RXfCw_ /* cDS6RO? **TestMethod.java W/m,qilQI */ KXP^F6@l package NetFox; +)4_1i4"x jHj*S9:` od\Q<Jm} public class TestMethod { "&ElKy
7j vq~btc.p{& PZQn]lbak public TestMethod() hi I`ot { ///xx/weblogic60b2_win.exe ?-P]m&nh| try{ 7Xu.z9y SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); )r#^{{6[v //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); ~97T0{E3 SiteFileFetch fileFetch = new SiteFileFetch(bean); 1}{bHj fileFetch.start(); ^y,%Tv> } i-'rS/R catch(Exception e){e.printStackTrace ();} `)[bu n
4:Yc@, Wv]NFHe# } IG1+_-H: !`yg bI. 3rEBG0cf] public static void main(String[] args) ugtb`d{ Sl { )/u?_)b4" new TestMethod(); _-^Lr
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