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/* ggzAU6J **SiteFileFetch.java ">rsA&hN- */ 9,}fx+^ package NetFox; F5Cqv0HV import java.io.*; t4*aVHT import java.net.*; (p}9^Y (gv=P>: $=X!nQ& Z| public class SiteFileFetch extends Thread { * ,|)~$=> *s
1D\/H w?*'vF_2:# SiteInfoBean siteInfoBean = null; //文件信息Bean noWRYS % long[] nStartPos; //开始位置 %!1@aL]pQ long[] nEndPos; //结束位置 |8b$x| B FileSplitterFetch[] fileSplitterFetch; //子线程对象 })Ix.!p long nFileLength; //文件长度 )@?Qt2 boolean bFirst = true; //是否第一次取文件 ;w>Q{z boolean bStop = false; //停止标志 g#pIMA#/ File tmpFile; //文件下载的临时信息 :"h
Pg]' DataOutputStream output; //输出到文件的输出流 b*9m2=6 w;g)Iy6x //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) pRb+'v&_k public SiteFileFetch(SiteInfoBean bean) throws IOException )L&n)w { (Qw`%B siteInfoBean = bean; [0(
E>vm //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); {3_F fsg` tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); j@!BOL~? if(tmpFile.exists ()) c9>8IW { x|P<F 2L bFirst = false; |sDG>Zq? read_nPos(); T=iZ9w } w%!k?t,*] else .je~qo) { A@fshWrl% nStartPos = new long[bean.getNSplitter()]; J?UZN^ nEndPos = new long[bean.getNSplitter()]; "1=.5:yG } S.?\>iH[ |>m# m*{S ?ZD{e|:u rVc
zO+E } NG4eEnic!a QqT6P`0u 4rGO8R public void run() Hj-<{#, { ;RTrRh0v //获得文件长度
QmDhZ04f //分割文件 QZz{74]n //实例FileSplitterFetch oqQ? 2k<@ //启动FileSplitterFetch线程 [7ek;d;'t //等待子线程返回 C_g"omw40 try{ ),W(TL if(bFirst) ~Iu21Q(* { d[qEP6B nFileLength = getFileSize(); ;Fwm1ezx0 if(nFileLength == -1) t8a@L(J$ { 519:yt System.err.println("File Length is not known!"); fTi{oY,zTg } A(_^_p.| else if(nFileLength == -2) vb80J<4 { ^`B##9g~ System.err.println("File is not access!");
!EyGJa[i } Q'%5"&XFD else d
>wmg*J { ?AM8*w for(int i=0;i<nStartPos.length;i++) 8=zM~v) { 3T.M?UG> nStartPos = (long)(i*(nFileLength/nStartPos.length)); &xMJ^Nv } ~_^o?NE, for(int i=0;i<nEndPos.length-1;i++)
GwIfGixqH { J,77pf!B nEndPos = nStartPos[i+1]; +H m+#o } ;Kd{h nEndPos[nEndPos.length-1] = nFileLength; (w@MlMk } &j~|3 } wDC/w[4: )su
<Ji* { ves@p>? //启动子线程 O|7{%5h fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; >[P7Zlwv4 for(int i=0;i<nStartPos.length;i++) 1p"EE~v { 9'*ZEl^?D fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), BC0c c[x siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), '|A5a+[ nStartPos,nEndPos,i); +qW w-8 Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 1b]PCNz fileSplitterFetch.start(); bCx1g/
} %F]9^C+ // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ))+98iU1s siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); oTV8rG // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", }.|5S+J?[ nEndPos = " + nFileLength); r/$)c_x` // fileSplitterFetch[nPos.length-1].start(); i,b7Ft:F& i11GW _Ag/gu2-? //等待子线程结束 cZX&itVc: //int count = 0; AL$Ty //是否结束while循环 @7Rt[2"e boolean breakWhile = false; <B{VL8IA> @p` CAB V1b_z while(!bStop) }ok
nB { /$.vHt5nt write_nPos(); \t(r@qq Utility.sleep(500); }GNH)-AG)$ breakWhile = true; sluZ-,zE xS-nO_t 'E uV$d7(N}" for(int i=0;i<nStartPos.length;i++) wj5s5dH { I%b:Z if(!fileSplitterFetch.bDownOver) .q[sk { V7'x?
pt breakWhile = false; |iJZC break; ~U*N'>'=) } GvtI-\h] } it|:P if(breakWhile) 1YD.jU^;HD break; l'lDzB+.* &OR*r7*Z )n[Mh!mn //count++; ?,e:c XhE2 //if(count>4) @`*YZq>p // siteStop(); 7MJ)p$& } <21^{ yt1 kc']g:*]Y M~Dc5\T System.err.println("文件下载结束!"); 5*za] } 1xV1#'@[Jd catch(Exception e){e.printStackTrace ();} <=2*UD | } uqeWdj*Y XlJux_LD: "EkO>M/fr //获得文件长度 ^X'7>{7Io public long getFileSize() ~e~Mx=FT0 { I[IQFka} int nFileLength = -1; +~.Jw#HqS try{ dY`J,s URL url = new URL(siteInfoBean.getSSiteURL()); $
rnr;V HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); \iSBLU httpConnection.setRequestProperty("User-Agent","NetFox"); >mSl~.I2 %=
;K>D '=Y~Ir+ int responseCode=httpConnection.getResponseCode(); #X_ M if(responseCode>=400) $^ dk>Hj>4 { buyz>ICP processErrorCode(responseCode); \eN/fTPm return -2; //-2 represent access is error *n?:)( } b>._ r&. _u5U> w _JO @O^Ndd String sHeader; ${eh52)` /UyE- "S ,.F+x} for(int i=1;;i++) *heQ@ww { (W/UR9x)|d //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ~ZN9 E-uL //Utility.log(in.readLine()); u#|Jl|aT sHeader=httpConnection.getHeaderFieldKey(i); F4gc_>{| if(sHeader!=null) "g[UX{L { *j :5 if(sHeader.equals("Content-Length")) _J;a[Ky+[ { M)Q+_c2* nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); }CqIKoX. break; pz =Wq4l } nEr, jd~f } Nuq/_x else V#KM~3e break; _%!hkc( } j'n= Xh } QV1%Zou catch(IOException e){e.printStackTrace ();} @S):a`J catch(Exception e){e.printStackTrace ();} U%l{>*q Pw.+DA n_glYSV! Utility.log(nFileLength); mJT
m/C 0[Aa2H* Y
[S^&pF return nFileLength; }qPo%T } {eV_+@dT |JQ05nb [*v\X %+ //保存下载信息(文件指针位置) H\vO0 <X private void write_nPos() $i
Tgv?.Q { ktRdf6:~ try{ 0}N^l=jQ output = new DataOutputStream(new FileOutputStream(tmpFile)); >sq9c/}X output.writeInt(nStartPos.length); zFIKB9NUn for(int i=0;i<nStartPos.length;i++) 8Qh/=Ir { GS%Dn^l // output.writeLong(nPos); LX'US-B.! output.writeLong(fileSplitterFetch.nStartPos); \=~Ap#Mpc4 output.writeLong(fileSplitterFetch.nEndPos); ~5b %~: } P@#6.Bb#V output.close(); {[+gM? } N8TO"`wdbs catch(IOException e){e.printStackTrace ();} Lif mYn[ catch(Exception e){e.printStackTrace ();} hV)I
C9 } >xN^#$ng} bUNp>H>L |%} ?*|- //读取保存的下载信息(文件指针位置) NINiX( private void read_nPos() 57r)&8 { >J1o@0tk try{ ]F~5l?4u# DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); F
7=-k/k int nCount = input.readInt(); s0u$DM2 nStartPos = new long[nCount]; %j,Ny}a nEndPos = new long[nCount]; ?l/rg6mbI' for(int i=0;i<nStartPos.length;i++) t9}XO M* { jn[a23;G) nStartPos = input.readLong(); pP#?| nEndPos = input.readLong(); 8"@<s?0\" } c?d#Bj ? input.close(); h$!qb'| } DCm;dh catch(IOException e){e.printStackTrace ();} C{D2mSS catch(Exception e){e.printStackTrace ();} R[(,wY_1 } &P;x<7h$t? g 0L 4 K;95M^C\O* private void processErrorCode(int nErrorCode) sM-*[Q=_ { ]1K
&U5p System.err.println("Error Code : " + nErrorCode); `'>>[*06:a } /c7j@=0 R8KL4g-d
Wi[Y@ //停止文件下载 N P"z public void siteStop() (#:Si~3 { mH?hzxa+ bStop = true; 5q<kt{06\ for(int i=0;i<nStartPos.length;i++) ~ 0[K%]] fileSplitterFetch.splitterStop(); ,uw&)A u32<=Q[ kxP6#8*: } L \$zr,=C } U+ 8[Ia(t //负责部分文件的抓取 eZv0"FK
X **FileSplitterFetch.java ] !H<vR$8 */ YcI]_[ package NetFox; M_e!s}F h3:,Gbyap s^U^n// import java.io.*; eD}Ga4 import java.net.*; vD(;VeW[ o]nQo?! G$Dg*< public class FileSplitterFetch extends Thread { qUo(hbp L+u_153 GP[$&8\M String sURL; //File URL /oI''O%M long nStartPos; //File Snippet Start Position >A)he!I long nEndPos; //File Snippet End Position TQ BL!w int nThreadID; //Thread's ID HG^8&uh] boolean bDownOver = false; //Downing is over >3ODqRu boolean bStop = false; //Stop identical [:o#d`^ FileAccessI fileAccessI = null; //File Access interface bUBuJ 3drgB;:g` HqbTJ!a public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ?]})Xf.A { Y8d%L;b[D this.sURL = sURL; [;2v[&Po this.nStartPos = nStart; hOq1"kL this.nEndPos = nEnd; 6(z.(eT nThreadID = id; JvG t=v fileAccessI = new FileAccessI(sName,nStartPos);//定位 4uv }6&R } &@RU}DnvM& #*~ ( mdk:2ndP public void run() (d ( whlF { o;O_N^_W while(nStartPos < nEndPos && !bStop) {S}/LSNB { FPqgncBHK )j$Bo{ [fb -G5x try{ w90y-^p% URL url = new URL(sURL); 3B_S>0H"$ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); )JjfPb64 httpConnection.setRequestProperty("User-Agent","NetFox"); isaT0__8 String sProperty = "bytes="+nStartPos+"-"; \UiuJ+ httpConnection.setRequestProperty("RANGE",sProperty); bi_R.sfK& Utility.log(sProperty); wM|-u/9+ M--6oR7 j;'NJ~NZ$ InputStream input = httpConnection.getInputStream(); fpzTv3D=I //logResponseHead(httpConnection); 0D\FFfs h.c)+wz/%C CfVz' byte[] b = new byte[1024]; 0/%zXp&m int nRead; rsIjpPa while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) FY
VcL* { 4iKT nStartPos += fileAccessI.write(b,0,nRead); .
E.OBn //if(nThreadID == 1) O[N{&\$ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); $k!t&G } Y!SD^Ie7! Hj5b.fB JY /Cd6\ Utility.log("Thread " + nThreadID + " is over!"); c~>M7e( bDownOver = true; ?1[go+56X //nPos = fileAccessI.write (b,0,nRead); $1w8GI\J } (;s\Ip0 catch(Exception e){e.printStackTrace ();} *:_.cbo } v7g-M } Sd{>(YWx~ Y#Hf\8r,d 9m#`56G` //打印回应的头信息 }g`A*y;t public void logResponseHead(HttpURLConnection con) 0z,c6MjM+ { NE/3aU for(int i=1;;i++) Z3I< { <yIJ$nBx String header=con.getHeaderFieldKey(i); D L$P if(header!=null) Lrz>00(*4 //responseHeaders.put(header,httpConnection.getHeaderField(header)); <8H`y(S Utility.log(header+" : "+con.getHeaderField(header)); ;Yi ;2ttW else Ble <n6 break; QjRVdb> } hLBX,r)u } s'i1!GNF
B K}Aaflq Um*{~=;u public void splitterStop() Ha;^U/0| { >WDb89kC= bStop = true; R|Ykez!D } W~gFY#w n#m )]YQC iS02uVmBZ } 1z*] MYU UP#]n
69y WM9QC59 /* xH*OEzN **FileAccess.java %vMi
kibI *//文件访问(定位,写) 3dC8MKPq0 package NetFox; i9+V<'h import java.io.*; Y]ZOvA5W qc@CV: taI]) public class FileAccessI implements Serializable{ :0V <
Z1*y$=D?3[ //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 nIXq2TzJ RandomAccessFile oSavedFile; Nqy',N long nPos; (%\N-[yZ ,sXa{U spgY &OI; public FileAccessI() throws IOException fM d]P:B { F@&q4whaVD this("",0); BpRQG]L } u|B\@"0 tOS%.0W5J QD q2< public FileAccessI(String sName,long nPos) throws IOException hyFq>XFo { ^uC1\!Q1 oSavedFile = new RandomAccessFile(sName,"rw"); hG; NJx-=R this.nPos = nPos; Hz!+g'R!Gs oSavedFile.seek(nPos); =]&R6P> } MiAXbo#\ pT:CvJ ~cQP4
kBD] public synchronized int write(byte[] b,int nStart,int nLen) 8K7zh.E { w=y!|F int n = -1; n SmYa7 try{ -Z)$].~|t oSavedFile.write(b,nStart,nLen); 1KAA(W;nq n = nLen; hekAics6S } 9kWyO:a_( catch(IOException e) "pQM$3n( { 'BcxKqC e.printStackTrace (); p~$\@8@ } zH}u9IR3` vUY?Eb[ B$_F)2%m; return n; p;U[cGHC } C.FGi`rrm 1DN, 0A/GWSmF } }ZlJ [P`Q_L,+ Vt*Duh+4 /* C5*j0} **SiteInfoBean.java w' #VN|;;! */ i=#r JK= package NetFox; MuO7_*q'n u'<Y#bsR#/ &W)ks public class SiteInfoBean { >/ECLP t>
-cTQm --dGN.*xb4 private String sSiteURL; //Site's URL
QSmE:Y private String sFilePath; //Saved File's Path hm&{l|u{RU private String sFileName; //Saved File's Name A|c :&i private int nSplitter; //Count of Splited Downloading File fI t:eKHr <~u.:x@ R hJrxb<9@Y0 public SiteInfoBean() 69`9!heu {//nSplitter的缺省值为5 \V +$2
:A //default value of nSplitter is 5 Z"mpE+U* this("","","",5); U^snb6\5 } VQ$=F8ivG xEOR\(Z^ acRPKTs
H public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) V89!C?.[]1 { = K"F!} sSiteURL= sURL; |&o1i~Y sFilePath = sPath; @R9 sFileName = sName; fu?>O/Gn/ this.nSplitter = nSpiltter; ;_F iiBk7( L>).o%(R '.#KkvE## } H2zd@l:R Z>7Oez> q(\$-Dk.Vv public String getSSiteURL() 3BKW { FJ!N)`[ return sSiteURL; 2Qc&6-;` } TXH: + m c ~g;(`g 'N,x=1R5 public void setSSiteURL(String value) ygd'Nh!@ { A&Ut:OiA sSiteURL = value; qV@xEgW#r } &dbX>u q F<Z"W}I+6 Ipb4{A&"\ public String getSFilePath() (=)+as"u9* { 0Dc$nL?TqX return sFilePath; yV$p(+KkS } ?F(t`0= 5\S)8j `8 R D=!No? public void setSFilePath(String value) wAVO%8u { c)rI[P7Q sFilePath = value; "P&|e|7 } IE|x+RBD v )%EG mu=u!by.E public String getSFileName() P`-(08t { !r.X. C return sFileName; b1\z&IdC } nO\|43W n"@3d.21 ^Ac0#oX]M public void setSFileName(String value) fR_)e: { v$+G_ @ sFileName = value; _&19OD% } 8{4I6;e- )WwysGkqol CW*6 -q public int getNSplitter() n!ea)+^ { '?_I-="Mr return nSplitter; ^}U{O A } j MW|B *q|.H9
K( 9} eIidw K public void setNSplitter(int nCount) xDRK^nmC { UF,T nSplitter = nCount; w{I60|C]* } qf4|!UR{ } s
~(qO|d S8.nM}x kYPowM /* 03$Ay_2 **Utility.java B&-;w_K */ f>#\'+l' package NetFox; ir \ d8. wUh'1D<(r s]U'*?P public class Utility { CU lANd" nUd(@@%m n." j0kc7= public Utility() B 8C3LP}? { :d)@|SR1 XfViLBY(
> d!Y,i!l! } n)$ q*IN" d<`Z{"g NS //线程睡眠 J\m7U public static void sleep(int nSecond) _.?$~;7 { 4&$hBn=! try{ @ mtv2P` Thread.sleep(nSecond); \DeZY97p% } N<$uAns catch(Exception e) Bi?.G7> { SV6Np?U e.printStackTrace (); 2s|[!:L5 } li/IKS)e$ } dgX 0\lKpf +SUQRDF@i //日志 >jN)9}3>-# public static void log(String sMsg) s49AF { xQWZk`6~L System.err.println(sMsg); _F,@mQ$! } #
?}WQP! 9.vHnMcq !. q*bY public static void log(int sMsg) 9R'rFI { z~z.J] System.err.println(sMsg); Rqvm%sAi } X@| } 2)4{ 7Py8! G78rpp /* - bFz **TestMethod.java ZVK;m1?' */
(nvSB}? package NetFox; TyGXDU 7CrWsQl u \$riwL public class TestMethod { 0($MN]oZa z@T;N'EM o6B!ikz 8 public TestMethod() Vj~R6 { ///xx/weblogic60b2_win.exe VpTp*[8O try{ ^[^uDE
< SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); ]<++w;#+x //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); >MiA|N= SiteFileFetch fileFetch = new SiteFileFetch(bean); t=A|
K fileFetch.start(); "F)7!e } IE'OK catch(Exception e){e.printStackTrace ();} }{]{`\ HYW+,ts' WmOd1 } :R<,J=+$u vV"TTzs! ]yCmGt+b public static void main(String[] args) - DL/Hk_r { {_ewc/~ new TestMethod(); ed>_=i } PJh\U1Z } d3^LalAp 点击下载更多相关资料
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