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/* _auFt"n **SiteFileFetch.java
L08lkq, */ w/9%C(w6 package NetFox; WM
]eb, 8q import java.io.*; 8KsPAK_ import java.net.*; !bCaDTz )`mBvS.} Sf2xI' public class SiteFileFetch extends Thread { Xwd9-: vz&88jt }-T,cA_H| SiteInfoBean siteInfoBean = null; //文件信息Bean HKVtO%& long[] nStartPos; //开始位置 O-3a U!L long[] nEndPos; //结束位置 @]Ac >& FileSplitterFetch[] fileSplitterFetch; //子线程对象 drbim8!q~ long nFileLength; //文件长度 eAjsMED boolean bFirst = true; //是否第一次取文件 |3`8$- boolean bStop = false; //停止标志 cNye@}$lu File tmpFile; //文件下载的临时信息 1-|aeJ DataOutputStream output; //输出到文件的输出流 gSe3S-Lt 2G_]Y8 //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) MHA_b^7? public SiteFileFetch(SiteInfoBean bean) throws IOException 7j88^59 { thE9fr/ siteInfoBean = bean; K87yQOjPv //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 1jpft3*x tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); RNt9Qdr4y if(tmpFile.exists ()) ?.Ip(g { %l!-rXp bFirst = false; BKYyc6iE read_nPos(); F
1l8jB\ } ClNuO else D2RvFlAXu { \m=k~Cf:f nStartPos = new long[bean.getNSplitter()]; ,Kt51vG i nEndPos = new long[bean.getNSplitter()]; Y8N+v+V/ } PZI6{KOis jsP+,brO cM]ZYi w:mm@8N } TIK'A< r;+a%?P AHHV\r public void run() 3PlIn0+LX { yI^7sf7k //获得文件长度 *;U<b //分割文件 Lyit`j~yH //实例FileSplitterFetch Vlge*4q //启动FileSplitterFetch线程 Z*=$n_
G //等待子线程返回 X8wtdd]64 try{ |/n if(bFirst) 7xfS%'=y" { %"WhD'*z} nFileLength = getFileSize(); \s!x;nw[ if(nFileLength == -1) D0>Pc9 { 9Q'[>P=1 System.err.println("File Length is not known!"); ncTMcu } R`B} T<* else if(nFileLength == -2) +,TrJg { RE1M4UV. System.err.println("File is not access!"); )JJF}m= } ls~9qkAyLx else
;v/un { !OMCsUZ for(int i=0;i<nStartPos.length;i++) >]uu?!PU { whm|"}x)u nStartPos = (long)(i*(nFileLength/nStartPos.length)); Xg;;<
/Z } n~ 0MhE0H for(int i=0;i<nEndPos.length-1;i++) =ADOf_n} { &(e5*Q nEndPos = nStartPos[i+1]; 7
D{% } G,<l}(tEG nEndPos[nEndPos.length-1] = nFileLength; Z*-a=u%gl' } T6."j_ } ) $0>L5d: mu5r4W47 Ty#sY'% //启动子线程 }0iHf'~DH* fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Sh?eb for(int i=0;i<nStartPos.length;i++) k|{ 4"4r { /_YTOSZjm fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 1U?5/Ja siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), >8b%*f8R nStartPos,nEndPos,i); ) TRUx Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); O%haaL\ fileSplitterFetch.start(); ~O]{m,)n } mkrVeBp // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 7p1B"% siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); &I%E8E // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", p}5413z5Z= nEndPos = " + nFileLength); SpYmgL?wJ // fileSplitterFetch[nPos.length-1].start(); FZIC|uz i%,
't xLfv:Rp //等待子线程结束 b*/Mco 9O //int count = 0; #=;vg //是否结束while循环 /Gn0|]KI boolean breakWhile = false; DIJmISk )dh`aQ%N " RD=V`l{Z while(!bStop) L&~' SC { upX@8WxR write_nPos(); H6Bw3I[ Utility.sleep(500); lJdYR'/Wd breakWhile = true; 29m$S7[ B|,d
7B\Q5fLQ for(int i=0;i<nStartPos.length;i++) $15H_X*! { cOZBl;} if(!fileSplitterFetch.bDownOver) +S`cUn7 { ZKq#PB/. breakWhile = false; UEhFId break; ect$g# } `S.I,<& } mx
UyD[| if(breakWhile) s`0IyQXVU break; W/}_ y8q HFlExau
sFnR; //count++; #9F>21UU //if(count>4) Nh}u]<B // siteStop(); V!>j:" } |lZp5MOc ~sPXkLqK
_N)&<'lB< System.err.println("文件下载结束!"); 1iNMgA } =p"ma83 catch(Exception e){e.printStackTrace ();} d>F. C> } ST0TWE' r-*6#
" GN:|b2 " //获得文件长度 t`R{N1 public long getFileSize() ^!0z+M:>^ { m l@%H int nFileLength = -1; 9qgs*]J try{ `@v;QLD"d< URL url = new URL(siteInfoBean.getSSiteURL()); Nu\<Xr8 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); f-ceDn httpConnection.setRequestProperty("User-Agent","NetFox"); xSNGf@1b 9%"`9j~H> 1uCF9P
ai int responseCode=httpConnection.getResponseCode(); 72.Msnn if(responseCode>=400) pnyu&@e { ~8"oH5 processErrorCode(responseCode); #NYHwO<0- return -2; //-2 represent access is error ';c 6 } oveK;\7/m 9q
2 vT^ VaGQre String sHeader; ICr.Gwe3_ [t$ r)vX aM(#J7; for(int i=1;;i++) P=6d<no&< { wf &Jd:)4t //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); h/5S2EB0!O //Utility.log(in.readLine()); +6
=lN[b sHeader=httpConnection.getHeaderFieldKey(i); mfS}+_ C if(sHeader!=null) KfYU.Q { q-ko)] if(sHeader.equals("Content-Length")) he:z9EG} { Xo]2iQy nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); <lWj-+m break; } .Z` } /BD'{tZ]Sl } gIusp917 else 0@{0#W3R break; *Uj;a. } k0#s{<I]E } VZ=:`) catch(IOException e){e.printStackTrace ();} \E<Qi3W>* catch(Exception e){e.printStackTrace ();} i/H;4#Bz gmgri >]xW{71F@ Utility.log(nFileLength); tHHJ|4C @"1Z;.S8V EP>Lh7E9n return nFileLength; ('U TjV } 0t}v@-abU dJ Q K|/ eEP{?F^I[ //保存下载信息(文件指针位置) l|E4 7@# private void write_nPos() >]ZE<. { P}UxA! try{ H9_iTGBQ output = new DataOutputStream(new FileOutputStream(tmpFile)); 2f@Cy+W'[ output.writeInt(nStartPos.length); m'"H1~BW for(int i=0;i<nStartPos.length;i++) l>`66~+s,` { }^$1<GT // output.writeLong(nPos); Ry"4v_e9 output.writeLong(fileSplitterFetch.nStartPos); jC>#`gD output.writeLong(fileSplitterFetch.nEndPos); D GcpYA.7' } e&U$;sS` output.close(); R@s7s%y= } ipg`8*My catch(IOException e){e.printStackTrace ();} wytMoG\ catch(Exception e){e.printStackTrace ();} n%#3xoa } *PV"&cx 7aKI=;60. 4%w<Ekd //读取保存的下载信息(文件指针位置) ~<9e}J private void read_nPos() J -Lynvqm { -N wic| try{ OuEcoI K DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ]@<VLP? int nCount = input.readInt(); (=;'>*L( nStartPos = new long[nCount]; + xO3<u nEndPos = new long[nCount]; eOF*|9 for(int i=0;i<nStartPos.length;i++) =b>TF B=*N { qHdUnW nStartPos = input.readLong(); PpBptsb^|J nEndPos = input.readLong(); EPH" 5$8 } <!XunXh input.close(); +6P[TqR } ab%I&B<b catch(IOException e){e.printStackTrace ();} D&2NO/
R catch(Exception e){e.printStackTrace ();} o{fYoBgr } U5H%wA['m X'
5R4j IF5-@hag, private void processErrorCode(int nErrorCode) 1zH?.- { g3&nxZ System.err.println("Error Code : " + nErrorCode); CJ%'VijhD } K8MET& ,f>9oOqqA ^>Z_3{s:$ //停止文件下载 8h@L_*Kr public void siteStop() ]k^?= { Qkx*T9W bStop = true; yq k8)\p for(int i=0;i<nStartPos.length;i++) kk6
!krZ fileSplitterFetch.splitterStop(); T$%QK?B S`zu.8%5 GdNhEv } rf4f'cUa } gj
@9(dk% //负责部分文件的抓取 cnQ2/ZZp~ **FileSplitterFetch.java WPNw")t! */ SJa>!]U'xI package NetFox; Z'y &11 r(uo-/7z k?&GL!? import java.io.*; {.AN4 import java.net.*; YW&K,)L@ _.V5-iN ~5%3] public class FileSplitterFetch extends Thread { JZ`h+fAt g=Xy{Vm
UCfouQ Cj String sURL; //File URL W}TP(~x'N long nStartPos; //File Snippet Start Position (?R!y - long nEndPos; //File Snippet End Position M(K7xx+G int nThreadID; //Thread's ID .\ fpjQW boolean bDownOver = false; //Downing is over ?{aJ#w boolean bStop = false; //Stop identical *nJ,|T FileAccessI fileAccessI = null; //File Access interface ou~$XZ7oi >4Tk#+%Jj DGb1_2ZQ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException tJ K58m$ { .x,y[/[[) this.sURL = sURL; OzrIiahz/ this.nStartPos = nStart; u%z'.#r; a this.nEndPos = nEnd; (XmmbAbVom nThreadID = id; b/
\EN) fileAccessI = new FileAccessI(sName,nStartPos);//定位 ;#9?3Os } fv+ET:T% =LV-n U!r8}@ public void run() XK3O,XM { B!x#|vGXL while(nStartPos < nEndPos && !bStop) ZwLr>?0$
p { ?rQ .nN tB~#;:g eg}g}a try{ Z+y'w#MZL URL url = new URL(sURL); a
dr\l5pWQ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); iD|~$<9o httpConnection.setRequestProperty("User-Agent","NetFox"); '%ilF1# String sProperty = "bytes="+nStartPos+"-"; bS~Y_]B httpConnection.setRequestProperty("RANGE",sProperty); T[1iZ Utility.log(sProperty); (:OMt2{r *1kFy_Gx aH uMm& InputStream input = httpConnection.getInputStream(); Qw2-Vv4!" //logResponseHead(httpConnection); jGz~}&B .G\](% wods byte[] b = new byte[1024]; $RY-yKmi int nRead; u_' -vZ_ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) t*H2;|zn_ { ;6pB7N nStartPos += fileAccessI.write(b,0,nRead); m=@xZw< //if(nThreadID == 1) "Ux(nt // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); i@?|vu } 6}I X{nQI EniV-Uj\D d;l%XZe Utility.log("Thread " + nThreadID + " is over!"); sGhw23 bDownOver = true; &-Ch>:[
//nPos = fileAccessI.write (b,0,nRead); J(d+EjC } 9MZ)- catch(Exception e){e.printStackTrace ();} hDB(y4/ } 3WQa^'u } uGC5XX^ .uauSx/#4 TCRTC0_}k //打印回应的头信息 V;MmPNP| public void logResponseHead(HttpURLConnection con) ;a1DIUm' { q C cLd7`$ for(int i=1;;i++) B<r0y { |X:`o;Uma String header=con.getHeaderFieldKey(i); uXFI7vV6P if(header!=null) /mz.HCs //responseHeaders.put(header,httpConnection.getHeaderField(header)); K
|=o - Utility.log(header+" : "+con.getHeaderField(header)); z*jaA;# else |}:}14ty break; )u{]rb[ } |=YK2}; } vi^YtA _";w*lg} PVlCj public void splitterStop() o5&b'WUJ= { :
pUu_ bStop = true; <lIm==U<- } _xh)]R [q!]Ds"
_ k-n`R)p: } e`={_R{N *w*K&$g ,
p}:?uR /* < r~hU*u **FileAccess.java CUH u= *//文件访问(定位,写) `K+%/|! package NetFox; KZ[TW,Gw import java.io.*; |s/N?/qi Nkj$6(N=zJ ~HGSA( public class FileAccessI implements Serializable{ SF;\*]["f zW#5 /*@ //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 P-2DBNB7 RandomAccessFile oSavedFile; EoPvF`T long nPos; ^$'z#ZN1 z4BU}`;b3t 9;6)b0=$ public FileAccessI() throws IOException 0M;El2
P$ { QnS^ G{ this("",0); ._tEDY/1m } 5`fUR/|[
zo@vuB. vv,<#4d public FileAccessI(String sName,long nPos) throws IOException QAxy?m,' { 9HFEp-" oSavedFile = new RandomAccessFile(sName,"rw"); e< @$(w this.nPos = nPos; KPz0;2} oSavedFile.seek(nPos); BZ.l[LMp } ${z#{c1 eC<RM Q4 sjLMM_' public synchronized int write(byte[] b,int nStart,int nLen) OW};i| { meV Z_f/ int n = -1; !Ltx2CB2] try{ ',`Qx{tQ) oSavedFile.write(b,nStart,nLen); aE)1LP n = nLen; `)8~/G% } _GxC|d catch(IOException e) w=_^n]`R { {'+{ASpO! e.printStackTrace (); `+< ^Svou } >2>/
q? HN`qMGW^ Co nik` return n; =\2gnk~ } am? k
YMv}] &@@PJ!& } w?u3e+ Mn&_R{{= \Db`RvEmR /* 3S_H&>K **SiteInfoBean.java ;\A_-a_(# */ +|g*<0T5< package NetFox; rQT%~oM: LYYz=oZOE! 0U%tjYk( public class SiteInfoBean { &8i$`6wY Y5C kC F \8ZVI98 private String sSiteURL; //Site's URL A/a=)su private String sFilePath; //Saved File's Path CB>W# P% private String sFileName; //Saved File's Name (|AZO! private int nSplitter; //Count of Splited Downloading File X(E`cH
| )b]!IP3 ENqZ=Lyq public SiteInfoBean() %pxJ2 7Q {//nSplitter的缺省值为5 rlh:|#GTJ //default value of nSplitter is 5 y-H9fWi8Y& this("","","",5); EZiLXQd_ } `,~'T [ \(Nx)F j<!dpt public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) aTm R~k { ML|?H1m> sSiteURL= sURL; tQNc+>7k+u sFilePath = sPath; $2*_7_Qb sFileName = sName; O95gdxc this.nSplitter = nSpiltter; aKW-(5<JW :D3:`P>,c k*2khh- } /8]K}yvR CzreX3i ehB'@_y public String getSSiteURL() 6FUcg40Y { p8j4Tc5tQ> return sSiteURL;
I__b$ } NL|c5y<r 7P2(q p9G+la~;VM public void setSSiteURL(String value) 3
[]ltN_ { W Pr:d sSiteURL = value; yR{rje* } ul_E{v *"_W1}^ pLF,rOb public String getSFilePath() $FT6c@&y { _\IA[-C+O return sFilePath; sd+_NtH } =pmG.>Si 4s%zvRu g*FHZM*N9 public void setSFilePath(String value) E|-5=!]fX { nnBS;5 sFilePath = value;
hFycSu } #"r_ 3 f-i5tnh bYQ@! public String getSFileName() w#a`k9y { jdVj
FCl^# return sFileName; 1Z_w2D* } QhTn9S:D t5b cQ@Y 5ad@}7& public void setSFileName(String value) _-{=Z=?6} { 1+3-Z>^ e sFileName = value; 3TjyKB *! } DU,B ;m|N9' kc$W"J@ public int getNSplitter() E*T6kp^b { 89 m., return nSplitter; ^FNju/b } yRQ1Szbjli qh}+b^Wi =v?V public void setNSplitter(int nCount) LdiNXyyzet { O+'k4 nSplitter = nCount; @JdeOL; } 3:$@DZT$ } mV"F<G; H v#g:]T U. <c#S /* Hxac#(,7 **Utility.java sng6U;Z */ &09~ D8f' package NetFox; O:,Gmft+ ?G9DSk?6%Z *b{Hj'H aH public class Utility { /'VuMMJ2 8(NS;? =kq<J-:#R public Utility() beYGP { wS$ 'gKA6 {EoZ}I V$$9Rh } 79
_8Oh AYoTCi%7E //线程睡眠 "\~>[on public static void sleep(int nSecond) M`=\ijUwN { oWDn_GnG`h try{ `T%nGV l>\ Thread.sleep(nSecond); =*-ac } GM^H
)8U catch(Exception e) !3c+}j-j { .;bU["fn) e.printStackTrace (); ,Bx0 } =b )!l9TX } 8&+u+@H
:*l\j"fX5 //日志 tmoclK- public static void log(String sMsg) ?a,`{1m0\ { ?)Gb= System.err.println(sMsg); %qrUP\rn } E\Iz:ES^ 1"<{_&d1 meap ;p public static void log(int sMsg) S n~P1C { 9zBt
a System.err.println(sMsg); g[ @Q iy } D7thLqA } $_a/!)bP 8ce'G"
b \:JY[s/ /* "K|':3n| **TestMethod.java )g-0b@z!n */ voP#}fD package NetFox; Kp;<z< NDe FY nhm#_3!6A public class TestMethod { fpzEh}:H\ >)>~S_u ,&O&h2= public TestMethod() 51AA,"2[_ { ///xx/weblogic60b2_win.exe KeyHxU=? try{ w17{2'] SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); "yU<X\ni //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); tB}W
)Eb SiteFileFetch fileFetch = new SiteFileFetch(bean); Ms%C:KG fileFetch.start(); CX{M@x3m } t08[3Q& catch(Exception e){e.printStackTrace ();} aiw4J @@!]Raj= B.b sU } =(,kjw88w ST0|2)Lh" {FC<vx{42 public static void main(String[] args) _39VL { F
Zt;D new TestMethod(); 7=wQ#bq"1P } -s91/|n } Ym-mfWo^# 点击下载更多相关资料
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