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/* +ivz **SiteFileFetch.java K_My4>~Il */ 7tyn?t0n package NetFox; nVYh1@yLy import java.io.*; ]`|bf2*eA import java.net.*; )`U T#5 pZWp2hj{X .AV--oA~ public class SiteFileFetch extends Thread { nGP>M#F XL"e<P;t Cd(Ov5% SiteInfoBean siteInfoBean = null; //文件信息Bean c
shZR(b long[] nStartPos; //开始位置 l,d8%\ long[] nEndPos; //结束位置 ZkK +?:9 FileSplitterFetch[] fileSplitterFetch; //子线程对象 Ru
sa
&#[ long nFileLength; //文件长度 ZLO_5#< boolean bFirst = true; //是否第一次取文件 BgE]xm boolean bStop = false; //停止标志 b?Vu9! File tmpFile; //文件下载的临时信息 Y@pa+~[{h3 DataOutputStream output; //输出到文件的输出流 7#<|``]zNf $x 2t0@ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) S#ven& public SiteFileFetch(SiteInfoBean bean) throws IOException !Hgq7vZG { 5[;^Em)C siteInfoBean = bean; 4[5Z>2w //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); !>! l=Z tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Y[pGaiN: if(tmpFile.exists ()) sGzd c { K{0mb bFirst = false; ))+R*k% read_nPos(); i1sc oxX3\ } O,DA{> *m else 6bU/IVP { *FqNzly nStartPos = new long[bean.getNSplitter()]; yJgnw6>r2 nEndPos = new long[bean.getNSplitter()]; ^91k@MC } m6JIq}CMb z? cRsqf A]>0lB @ VJr0 } 0tl lQ)8zI K;YK[M1! public void run() =b;v:HC { 8IVKS> //获得文件长度 5[I9/4, //分割文件 H p1cVs //实例FileSplitterFetch ; xs?^N| //启动FileSplitterFetch线程 |_2O:7qe //等待子线程返回 `!rHH try{ c !5OK4+Z if(bFirst) z[7U>q[E { [.0R"|$sy+ nFileLength = getFileSize(); 8rw;Yo<k if(nFileLength == -1) (3_2h4O { E]+W^VG System.err.println("File Length is not known!"); BI}>"', } zf^!Zqn[8z else if(nFileLength == -2) !iZ*Z Pu { G*n5`N@>7 System.err.println("File is not access!"); 9WHkw@<R+ } &&tQ,5H5 else
g\n@(T$) { IU3OI:uq for(int i=0;i<nStartPos.length;i++) `<
VoZ/v { YwKY3kL nStartPos = (long)(i*(nFileLength/nStartPos.length)); <6Br]a60RR } 8)sqj= for(int i=0;i<nEndPos.length-1;i++) ww[STg { ~C[R%%Gu nEndPos = nStartPos[i+1]; qA*QFQ'- } Kw'A%7^e nEndPos[nEndPos.length-1] = nFileLength; RMsr7M4<91 } TCB<fS~U- } KaO8rwzDN zQ7SiRt7* _a c_8m //启动子线程 fv)-o&Q# fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; B<_T"n'#b for(int i=0;i<nStartPos.length;i++) 9B<y w. { RJ@d_~%U fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), DGp'Xx_8 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 4(o0I~hpB? nStartPos,nEndPos,i); X8Gw8^t Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); A4'vJk fileSplitterFetch.start(); "bC8/^ } O@Xl_QNxc! // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), +-xA/nU.c siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); _Z2VS"yH // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", $yOfqr nEndPos = " + nFileLength); nfl6`)oW // fileSplitterFetch[nPos.length-1].start(); Is-Kz}4L UD"e:O_ h/PWi<R
i //等待子线程结束 #XNe4# //int count = 0; T|oz_c\e //是否结束while循环 "i9$w\lm boolean breakWhile = false; pNE!waR> v!40>[?|p S[* e K
Z while(!bStop) .lRO;D { g_.BJ>Uv write_nPos(); $JcU0tPq0 Utility.sleep(500); y?Fh%%uNr breakWhile = true; Z\TH=UA d4gl V`%. E]"ePdZZ/ for(int i=0;i<nStartPos.length;i++) G+}|gG8 { XnV|{X%]U if(!fileSplitterFetch.bDownOver) < R0c=BZ> { :*@=px breakWhile = false; } fSbH break; hX~IZ((Hi8 } #y2="$V } 1\_4# @') if(breakWhile) !MQo=k break; R1A!ob U
= T[-(:H sL[,J[AN; //count++; 4l[f}Z //if(count>4) 5jkW@ // siteStop(); 9KD2C>d< } 7?B]X% b Kv9F@ k1B7uA'h"G System.err.println("文件下载结束!"); C{+~x@
} Vk8:;Hj catch(Exception e){e.printStackTrace ();} Kkdd }j } 8h-6;x^^ BDc*N]m}B1 f+ J<sk //获得文件长度 ;V`~'357% public long getFileSize() C %y AMQ { OfY>~d int nFileLength = -1; 6-<,1Q'D try{ Gz$DsaG URL url = new URL(siteInfoBean.getSSiteURL()); eH79,!=2 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); %xkqiI3Ff httpConnection.setRequestProperty("User-Agent","NetFox"); P4ot,Q4 Y{um1)k 0Tg/R4dI int responseCode=httpConnection.getResponseCode(); a&4>xZU # if(responseCode>=400) ejD;lvf { En-eG37l processErrorCode(responseCode); W<k) '| return -2; //-2 represent access is error kLADd"C } j{S\X'?
Vh4z+JOC ,8EeSnI String sHeader; )7[>/2aGd ka*VQXk* nA5v+d-<T for(int i=1;;i++) Y!CZ?c)@ { )vhHlZ *+ //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); w/>k //Utility.log(in.readLine()); % e:VeP~ sHeader=httpConnection.getHeaderFieldKey(i); Pgs4/ if(sHeader!=null) v!K%\h2A { \O72PC+ if(sHeader.equals("Content-Length")) }JAg<qy} { N2xgyKy~ nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 7@|(z:uw break; 6^}GXfJAc } e,|"9OK } k
h#|`E#, else d),@&MSN break; =i\~][- } .\LWV=B } [m!$01= catch(IOException e){e.printStackTrace ();} qEX59v catch(Exception e){e.printStackTrace ();} }=;N3Q" #y hH`yQGZ 5H;* Nj@ Utility.log(nFileLength); <fWho%eOK /Y%) Y {#0B~Zr return nFileLength; J4xt!RW! } ${0Xq k "kVN|Do 7H++ pOF //保存下载信息(文件指针位置) jpT!di private void write_nPos() [t,grdw { A&)P_B1| try{ 2mVH*\D output = new DataOutputStream(new FileOutputStream(tmpFile)); i#iY;R8 output.writeInt(nStartPos.length); H Viu7kue` for(int i=0;i<nStartPos.length;i++) QWxCNt:^? { VqbMFr<k // output.writeLong(nPos); 6D_4o&N output.writeLong(fileSplitterFetch.nStartPos); <o^mQq& output.writeLong(fileSplitterFetch.nEndPos); OA&N WAm4 } 9O~1o?ni output.close(); hFs0qPVY } : :e=6i catch(IOException e){e.printStackTrace ();} J rYpZ.Nh catch(Exception e){e.printStackTrace ();} yEzp+Ky }
Js'COO /Y|9!{.
> ")%4@ //读取保存的下载信息(文件指针位置) pi3Z)YcT private void read_nPos() K\,&wU { c|hKo[r) try{ L'z;*N3D DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); /,$6`V int nCount = input.readInt(); E!C~*l]wJx nStartPos = new long[nCount]; q yQPR nEndPos = new long[nCount]; H /*^$>0Uo for(int i=0;i<nStartPos.length;i++) rS{Rzs^@ { f+-w~cN nStartPos = input.readLong(); OKxPf]~4E nEndPos = input.readLong(); {(7C=)8): } wa@X^]D8 input.close(); `61VP-r } M@
! {m catch(IOException e){e.printStackTrace ();} (*^_wq-; catch(Exception e){e.printStackTrace ();} / QSK$ZDC } 3[-L'!pOX3 /vwGSuk._ VL7zU->
private void processErrorCode(int nErrorCode) onHUi]yYu{ { u
L/*,[}' System.err.println("Error Code : " + nErrorCode); f*bs{H'5 } 33s.p' 5 S7\m5 P=(\3ok //停止文件下载 SI8mr`gJ public void siteStop() hdfNXZ{A" { D@7\Fg bStop = true; yrE|cH'f0 for(int i=0;i<nStartPos.length;i++) )I$_wB!UV fileSplitterFetch.splitterStop(); JG0TbM1(Bt 9Z6O{
> Z:u7`% } AIN_.=]"? } ~^KemwogPN //负责部分文件的抓取 /8Ca8Ju **FileSplitterFetch.java `SFI\Y+WDT */ &yp_wW- package NetFox; y[.0L!C { q J@XVN4 0_,V} import java.io.*; 'FO^VJ;ha import java.net.*; O`rAqO0F 0Eo*C9FP~ q71Tg public class FileSplitterFetch extends Thread { C4#'`8E h9 [ov) Y[
a$~n^:n String sURL; //File URL !sK{:6s long nStartPos; //File Snippet Start Position ft?J|AG long nEndPos; //File Snippet End Position f.,S-1D]h int nThreadID; //Thread's ID !xA;(<K[^ boolean bDownOver = false; //Downing is over `hY%<L sI boolean bStop = false; //Stop identical 3'
mQ=tKa FileAccessI fileAccessI = null; //File Access interface YDz:;Sp\ sj0Hv d9 AL3zE=BL public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException {[NBTT9& { pR; AqDQ this.sURL = sURL; $:{uF# this.nStartPos = nStart; J XbG|L this.nEndPos = nEnd; ) zz"DH nThreadID = id; Jd7+~isu~ fileAccessI = new FileAccessI(sName,nStartPos);//定位 ,M5zhp$ } #92MI#|n9 <vhlT#p
m7cp0+Peo public void run() [Xg?sdQCI { g()YP while(nStartPos < nEndPos && !bStop) SHIK=&\~- { "b|qyT* Sl = 0Z}s ./rNq!*a try{ yAW%y URL url = new URL(sURL); <x53b/ft HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); [?.k 8;k httpConnection.setRequestProperty("User-Agent","NetFox"); r@/+ String sProperty = "bytes="+nStartPos+"-"; |z-A;uL < httpConnection.setRequestProperty("RANGE",sProperty); v0apEjT Utility.log(sProperty); &3:-(:<U '>@evrG }BzV<8F InputStream input = httpConnection.getInputStream(); TMT65X! //logResponseHead(httpConnection); /!P,o}l7 F
MHpa K.JKE"j)d byte[] b = new byte[1024]; %f*8JUE16 int nRead; ?qO_t;:0> while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) X8GIRL)lJ { q~T*R<S nStartPos += fileAccessI.write(b,0,nRead); !Hr~B.f7 //if(nThreadID == 1) &?#V*-;^ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); HX7"w
} 1\$xq9 W{*U#:Jx1 wC}anq>> Utility.log("Thread " + nThreadID + " is over!"); qa.nm4"6+ bDownOver = true; +%UfnbZ //nPos = fileAccessI.write (b,0,nRead); /hQTV!\u } 0h_ 9 catch(Exception e){e.printStackTrace ();} ToTehVw } 9B{,q6 } g\,pZ]0i -2{NI.-Xd 9!NL<}]{ //打印回应的头信息 %7xx"$P:R public void logResponseHead(HttpURLConnection con) g~rZ= { !NuiVC] for(int i=1;;i++) .-awl1 W { 9i;%(b{ String header=con.getHeaderFieldKey(i); N>/!e787OU if(header!=null) ;xS@-</: //responseHeaders.put(header,httpConnection.getHeaderField(header)); NhU~'k Utility.log(header+" : "+con.getHeaderField(header)); h.l^f>,/ else [U5[;BNRD break; |k\4\aLj } _)"-zbh}{ } SDwTGQ/0 ^KM' O8 wDVKp[' public void splitterStop() bC{}&a { >7V96jL$Y bStop = true; ^Vso`(Ss } !KKkw4 ?\"GT] 5D 3X=9$xw_ } K`{P/w PzMJ^H{ m(i8 4~ /* /Nt#|C> **FileAccess.java 4>-'w MW") *//文件访问(定位,写) Vzn0; package NetFox; Ye% e! import java.io.*; ikX"f?Q;S2 BiT
#bg ^~9fQJNs public class FileAccessI implements Serializable{ BKvX,[R2 zo6|1xq //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 z$4g9 RandomAccessFile oSavedFile; YcOPqvQ long nPos; t~]n"zgovz [%
\>FT[ H=RzY-\a% public FileAccessI() throws IOException X6)%2TwO { 1j"G~TM this("",0); KSDz3qe } b+Sq[ VwvL 1yC_/Va1 public FileAccessI(String sName,long nPos) throws IOException h;cl+c|B { DB%}@IW" oSavedFile = new RandomAccessFile(sName,"rw"); "jV:L this.nPos = nPos; !IF]P# oSavedFile.seek(nPos); =1sGT;> } fIe';a Z.'j7(tu QOiPDu=8z public synchronized int write(byte[] b,int nStart,int nLen) v=5H,4UMA { HVjN<H IqM int n = -1; !ij
R try{ 0Xo>f"2<f oSavedFile.write(b,nStart,nLen); ;E:vsVK n = nLen; qW+'#Jh@TV } %hDx UZ#0 catch(IOException e) niC ;WK { uPCzs$R e.printStackTrace (); -[/tS<U } m';j#j)w >x?x3 #SX J;HYGu: return n; K|L&mL&8 } vT@*o=I ;>hRj! corNw+|/w } c"KN;9c, Ig&H0S WbJ|]}hJ\ /* pPL)!=o! **SiteInfoBean.java HQ /D )D */ 4g4[n7 package NetFox; _D+pJ{@W gy5 ^JL GmhfBW? public class SiteInfoBean { 9K!kU6Gh .`p,pt; _E %!5u private String sSiteURL; //Site's URL t57MKDn private String sFilePath; //Saved File's Path s>J\h private String sFileName; //Saved File's Name :1asY:)vNP private int nSplitter; //Count of Splited Downloading File B(|*u @TJxU tTEw"DL_- public SiteInfoBean() 5
w-Pq&q {//nSplitter的缺省值为5 $8>kk //default value of nSplitter is 5 hgg8r#4q this("","","",5); OQ(w]G0LP } + Vv+<M GFGW'}w- izDfpr}s4 public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) m^!Kthq { 0<i8
;2KD sSiteURL= sURL; i?wEd!=w sFilePath = sPath; >Nam@,hm sFileName = sName; ZLDO&} this.nSplitter = nSpiltter; "DO|B=EejP |N5r_V ~=GwNo_ } P2Jo^WS RGgePeaw 8Z|A'M public String getSSiteURL() p!>5}f6 { <-6f}wN return sSiteURL; %$Dn);6= } *82+GY] >:Y"DX- Q~R% |Q{& public void setSSiteURL(String value) tm1#Lh0 { vh"wXu sSiteURL = value; 0Q7|2{ } ?K\r-J!Y ZH)Jq^^RI ^HhV?Iqg public String getSFilePath() p[Zk;AT~ { 3AcS$.G return sFilePath; Rp+Lu } ?;]Xc~ _Z>ny& z0H+Or public void setSFilePath(String value) VTUSM{TC { uc{s\_ sFilePath = value; Pm7lP5 } 3/N~`!zeX IM$ d~C xX?9e3( public String getSFileName() dQn,0 { =AcK9?%5 return sFileName; }}qY,@eeX } |2E:]wT}qg .],:pL9d *Sg6VGP public void setSFileName(String value) ){LU>MW{& { HvR5-?qQ sFileName = value; XuoyB{U } ;V?3Hwl 2FN E ;y( 82)%`$yZw[ public int getNSplitter() e'yw8U5E/ { g@'2 :'\ return nSplitter; DH7]TRCMZ) } tmd{Gx}c C{:U<q q`VkA
\ public void setNSplitter(int nCount) `>4"i+NFF8 { e?7y$H- nSplitter = nCount; :qc?FQ
; } pocXQEg$] } XU<XK9EA 2:RFPK H:nO\] /* Aj8zFt] **Utility.java }hE!0q~MfM */ /PVx package NetFox; U2)?[C1q{ g"~`\xhx EQe$~}[ public class Utility { b0sj0w / 7g5Pc_ cA+T-A] public Utility() ef7 BG( { p//mVH% 4p7j"d5 :IX,mDO } DUSQh+C ? o&goiM //线程睡眠 v^J']p public static void sleep(int nSecond) ]UkqPtG; { j u&v4] try{ <*I*#WI&B Thread.sleep(nSecond); A{dqB } bk0<i*ju7( catch(Exception e) r $[{sW { iGSF5S e.printStackTrace (); u+y3(0 } JqUft=p5 } iSX HMp4V 1LaJ
hrp? //日志 T_qM@/f public static void log(String sMsg) ]4/C19Fe! { KRX\<@ System.err.println(sMsg); !3<b#QAXRG } p1[|5r5Day
!<HF764@` /U,(u9bq public static void log(int sMsg) uaYI3w@^ { F >H\F@Wl System.err.println(sMsg); Wv%F^(R7 } DQ}&J } o=RxQk1N TV|Z$,6l r:PYAb=g /* &1Y7Ne **TestMethod.java uJ=d!Kn */ WZn"I&Z package NetFox; V*r/0|vd }+}Cl T Ga+Cb2$ public class TestMethod { sOVpDtZ]LR @#*{*
S8 ?^J%S, public TestMethod() pI.~j]*:{ { ///xx/weblogic60b2_win.exe ^hsr/| try{ G*=&yx."E SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); 2kOaKH[(q //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); k{'<J(Hb SiteFileFetch fileFetch = new SiteFileFetch(bean); OJ7Uh_;/ fileFetch.start(); ~c55LlO> } ~Y{]yBGoF catch(Exception e){e.printStackTrace ();} Lr20xm 8QMMKOui\ Q,:h`%V } +vH#xc\' R%~~'/2V m;nH
v public static void main(String[] args) -tx%#(?wH { c(29JZ new TestMethod(); Zx`/88!x[ } ~.6% %1? } 1;+77< |