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/* s`C#=l4 **SiteFileFetch.java Uvf-h4^J]: */ K!|=)G3.` package NetFox; ehxtNjA import java.io.*; Yc:b:\0}F6 import java.net.*; rC_K
L RfN5X}&A 'ZT!a]4 public class SiteFileFetch extends Thread { P_-zkw +hjc~|RK Zu%_kpW SiteInfoBean siteInfoBean = null; //文件信息Bean 2_r}4)z long[] nStartPos; //开始位置 >ID 3oi long[] nEndPos; //结束位置 5`x9+XvoN FileSplitterFetch[] fileSplitterFetch; //子线程对象 4
CX*,7LZ long nFileLength; //文件长度 >z^T~@m7l boolean bFirst = true; //是否第一次取文件 8H;TPa boolean bStop = false; //停止标志 DX$`\PA File tmpFile; //文件下载的临时信息 L8bq3Q'p DataOutputStream output; //输出到文件的输出流 "%f>/k;!h. OFRzz G@ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) BD4.sd+H, public SiteFileFetch(SiteInfoBean bean) throws IOException xR#hU;E} { 7{<F6F^P siteInfoBean = bean; /6gRoQ%j //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); L@a-"(TN+ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info");
\SLYqJ~m if(tmpFile.exists ()) J)jiI> { WK;p[u?~xi bFirst = false; {GWcw<g.B read_nPos(); v{% /aw } t"0~2R6i else a$aI% { {B\.8)&8 nStartPos = new long[bean.getNSplitter()]; &-cI| nEndPos = new long[bean.getNSplitter()]; MIR17%G } pQVi&( M WM@uxe, /E]4N=T ew`R=<mZ,7 } "A/kL@ -C B.Xm*adBT ,{oP`4\Lm public void run() Ccc6 ko_ { )@K|Co //获得文件长度 Z@I%ppd //分割文件 nosEo?{ //实例FileSplitterFetch m};_\Db` //启动FileSplitterFetch线程 -w@fd]g //等待子线程返回 D^&! try{ `J-"S<c?_ if(bFirst) '
>\* { n53}79Uiz nFileLength = getFileSize(); aY {. if(nFileLength == -1) m
{ 7#g C(&\A System.err.println("File Length is not known!"); F`u{'w:Hv } #;mZ3[+i5 else if(nFileLength == -2) Oi7=z?+j { ;<&s_C3 System.err.println("File is not access!"); X&p-Ge1>z } 3_ zI$Z else %pwm34 { MfL q
h for(int i=0;i<nStartPos.length;i++) ^k)f oD { +=}%
7o nStartPos = (long)(i*(nFileLength/nStartPos.length)); e.HN%LrhS } <0kRky$ for(int i=0;i<nEndPos.length-1;i++) Q?Nzt;)!. { (c}0Sg nEndPos = nStartPos[i+1]; {M%"z,GL7J } )>[(HxvfJU nEndPos[nEndPos.length-1] = nFileLength; d>AVUf<o~ } 8\a)}k~4 } a"&Z!A:Z= sztnRX_ huq6rA/i //启动子线程 hCo&SRC/5 fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; lN1zfM for(int i=0;i<nStartPos.length;i++) &
9?vQq|% { C8t+-p fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), \`XJz{Lm] siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), =riP~%_ML) nStartPos,nEndPos,i); aIfog+Lp Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 3oKqj> fileSplitterFetch.start(); *e8V4P } {T^'&W>8G8 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), FF_$)%YUp siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); XsR%_eT // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", +2?0]6EQ nEndPos = " + nFileLength); jOuv\$ // fileSplitterFetch[nPos.length-1].start(); Y3Qq'FN!I .(Pe1pe 1mjv~W //等待子线程结束 6F(yH4 //int count = 0; IIu3mXAw //是否结束while循环 Zq`bd55~ boolean breakWhile = false; ,v6Jr3 z)]EB6uRg Ke/P[fo while(!bStop) i5wA=K_ { @qe>ph[UA write_nPos(); Xt7'clr Utility.sleep(500); 21WqLgT3 4 breakWhile = true; NrU-%!Aw NV91{o(-7 pUwX
cy<n for(int i=0;i<nStartPos.length;i++) j)]'kg { nAX|=qp# if(!fileSplitterFetch.bDownOver) -s)2b
; { lLJb3[
e. breakWhile = false; \W\6m0-x break; KXM-GIRUG } YVaQ3o|! } 2h:f6=)r/u if(breakWhile) 54;iLL break; |knP RXof$2CZS pts}? //count++; k}O|4*.BT //if(count>4) H@3+K$|v // siteStop(); U'lD|R,g } GHlra^ njX:[_& FlgB-qR]<n System.err.println("文件下载结束!"); 'w!gQ#De } h1kPsgzR catch(Exception e){e.printStackTrace ();} N Hh
} jK=*~I oy`m:Xp g:6yvEu$ - //获得文件长度 Nb8<8O
^ public long getFileSize() E*I]v { V*m)h int nFileLength = -1; TZP{=v< try{ mQvKreo~ URL url = new URL(siteInfoBean.getSSiteURL()); _Pz3QsV9 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ~^euaOFU 6 httpConnection.setRequestProperty("User-Agent","NetFox"); X @Bpjg R P X`2zr m ZhVpIUO int responseCode=httpConnection.getResponseCode(); xWwPrd if(responseCode>=400) (g)@wNBW { e-')SB processErrorCode(responseCode); 6^aYW#O<Ua return -2; //-2 represent access is error *~cs8<.!1 } 6m"
75 _9@?Th&_e qN0#=X
String sHeader; M+E5PZ|_
I>3]4mI*a 4GfLS.Ip for(int i=1;;i++) /SKr.S61e { 'f}S,i +q //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ]p*)
PpIl //Utility.log(in.readLine()); vedMzef[@> sHeader=httpConnection.getHeaderFieldKey(i); oU@ljSD if(sHeader!=null) _%2Umy| { ZYt
__N if(sHeader.equals("Content-Length")) <D dHP { 0V#t ;`Q3 nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 7, 13g) break; 9HE(*S } w.Vynb } 5p|@ ) else }J?fJ( break; I:_*8el&d } \l:g{GnoT } 0xxzhlKNL catch(IOException e){e.printStackTrace ();} A]+h<Y~} catch(Exception e){e.printStackTrace ();} @NNLzqqY >h[!gXL^ /kA19E4 Utility.log(nFileLength); B
R:
r^E]GDz mCt>s9a)H return nFileLength; &o/4hnHYt } BXo|CITso w&"w" Wh Zaq //保存下载信息(文件指针位置) B# ?2, private void write_nPos() tvOAN|+F { ~0-764% try{ UBi4 itGD output = new DataOutputStream(new FileOutputStream(tmpFile)); VqL
5f output.writeInt(nStartPos.length); ,/:a77 for(int i=0;i<nStartPos.length;i++) &7T
H
V { P082.:q" // output.writeLong(nPos); 2E2}|:
||& output.writeLong(fileSplitterFetch.nStartPos); rH9}nL output.writeLong(fileSplitterFetch.nEndPos); bXH^Bm } 0#[f2X62B output.close(); @,4%8E5 } Uo}&-$ B catch(IOException e){e.printStackTrace ();} i+[3o@ catch(Exception e){e.printStackTrace ();} '=
<`@ } <gdgcvd K~8tN,~& >NRz*h # //读取保存的下载信息(文件指针位置) /plUzy2Yu private void read_nPos() ]kkBgjQbS { 8KtgSash try{ G\+nWvV7 DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); L{LU@.;1 int nCount = input.readInt(); S%X\,N nStartPos = new long[nCount]; MXF"F:-Kn nEndPos = new long[nCount]; H~|%vjH for(int i=0;i<nStartPos.length;i++) }#G"!/ZA0: { _Hu2[lV nStartPos = input.readLong(); R5eB,FN nEndPos = input.readLong(); -t6R!ZI } p,iCM?[| input.close(); zf,%BI[Hr } 3rdfg catch(IOException e){e.printStackTrace ();} KKjxg7{K catch(Exception e){e.printStackTrace ();} +z=%89GJ } m6r )Z5}f XLmMK{gs H@MFj>~ private void processErrorCode(int nErrorCode) [-t> G!) { vaRwhE: System.err.println("Error Code : " + nErrorCode); dA}
72D? } Dw`m>'J0 0O#B'Uu @y(Wy} //停止文件下载 v"r9|m~ ' public void siteStop() sk
?'^6Xh { pTALhj#, bStop = true; `GQiB]Z for(int i=0;i<nStartPos.length;i++) ,![Du::1 fileSplitterFetch.splitterStop(); ZJ9Jf2 c ,B %fjcn VL7S7pb_ } C5+`< } XU_,Z/Yw_ //负责部分文件的抓取 <.WM-Z **FileSplitterFetch.java zNny\Z */ M7DLs;sD package NetFox; FGwnESCC 6%. 28R>>C=R import java.io.*; 'xbERu(Y import java.net.*; N<06sRg# V(2,\+ t Y#lk!#\Y public class FileSplitterFetch extends Thread { GwQZf| *NW QmC~ ;4G\]%c)E{ String sURL; //File URL Fi'M"^:r{ long nStartPos; //File Snippet Start Position z]c,}Q long nEndPos; //File Snippet End Position KR=d"t Qw int nThreadID; //Thread's ID 2]D$|M?$~ boolean bDownOver = false; //Downing is over 'cZMRRc< boolean bStop = false; //Stop identical =zm0w~']E! FileAccessI fileAccessI = null; //File Access interface V3mjbH>F S\9t4Ki_' b0YiQjS6> public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException .%?-As { -XVEV this.sURL = sURL; !ww:O| 0 this.nStartPos = nStart; j /H>0^ this.nEndPos = nEnd; +YkW[a\4 nThreadID = id; i_=?eUq%q/ fileAccessI = new FileAccessI(sName,nStartPos);//定位 %o@['9U[j } 2f19W#
'0 Z'Exw-ca xHJ8?bD p public void run() Q1`<fD
{ f v E+.{ while(nStartPos < nEndPos && !bStop) rFmKmV { dG\U)WA(p ]<kupaRQ S jVsF1d_ try{ Jcz]J)|5v URL url = new URL(sURL); @S}/g/+2 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); b96t0w!cs httpConnection.setRequestProperty("User-Agent","NetFox"); 7uPZuXHxcu String sProperty = "bytes="+nStartPos+"-"; r$GPYyHK httpConnection.setRequestProperty("RANGE",sProperty); R9Sf!LR Utility.log(sProperty); /l,+oG%\ YlswSQ )bLGEmm InputStream input = httpConnection.getInputStream(); d>%gW* //logResponseHead(httpConnection); oX'0o 'c ;)(Sdf[P e1
x^PT byte[] b = new byte[1024]; 6a4 'xq7 int nRead; 8 ]q while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) CmEpir{}( { O^9CV*]!n nStartPos += fileAccessI.write(b,0,nRead); zL:&Q< //if(nThreadID == 1) jR{- // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Rx6l|'e } .dx
4,|6 %G;0T;0L FXP6zHsV Utility.log("Thread " + nThreadID + " is over!"); b?_e+:\UV bDownOver = true; {=UFk-$= //nPos = fileAccessI.write (b,0,nRead); h+,'B&=|_ } d_Q*$Iz)3 catch(Exception e){e.printStackTrace ();} #zON_[+s9 } qWsylC23 } >Z+"`"^o} m\>|C1oRy q0,kDM66 //打印回应的头信息 O:
,$% public void logResponseHead(HttpURLConnection con) }]AT _bh, { @j O4EEe: for(int i=1;;i++) q7X}MAW { r&}(9Cq&"y String header=con.getHeaderFieldKey(i); U1ZIuDg'E if(header!=null) KH7VR^;mk //responseHeaders.put(header,httpConnection.getHeaderField(header)); qysTjGwa] Utility.log(header+" : "+con.getHeaderField(header)); iI5+P`sE&J else fUC9-?(K break; KZ=u54 } &V'519vmoZ } CuH2E>wz 7vn%kW=$ ~C&*.ZR public void splitterStop() 9O;cJ)tXY { hAm/mu bStop = true; %2f//SZ: } NJtQx2Sd'H wV(AT$ [r)eP({ } +l`65!" 'Qa5n\HX$ N0i!l|G6 /* w OI^Q~ **FileAccess.java -fE.<)m=! *//文件访问(定位,写) vCw<G6tD package NetFox; xc9YM0B& import java.io.*; @@I7$* ~q)u(WC| y$X(S\W public class FileAccessI implements Serializable{ (n,u|}8Y 4({(i //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 C{EAmv' RandomAccessFile oSavedFile; 3jjMY long nPos; r-}-C! 0}{'C5 7 8Vcu'j&_ public FileAccessI() throws IOException hi ~} { S,)d(g3> this("",0); k1)%.pt% } ? B@E!/f 9mlIbEAb rLU'*} public FileAccessI(String sName,long nPos) throws IOException 9'?se5\ { 98RKCc9h oSavedFile = new RandomAccessFile(sName,"rw"); ~@T<gA9V this.nPos = nPos; IOL L1ar oSavedFile.seek(nPos); Q_]d5pl } 7p.>\YtoR} ]1D%zKY%$Z xg<Hxn,<M public synchronized int write(byte[] b,int nStart,int nLen) 41G5!=i { 5G(3vRX|1 int n = -1; .%}?b~
try{ 7tNc=,x} oSavedFile.write(b,nStart,nLen); rq sdE n = nLen; `:eU. } |?d#eQ9a catch(IOException e) #sTEQjJ,J { 5c5oSy+ e.printStackTrace (); pd3,pQ } Z&Y=`GOI $<nCXVqL,
%@Oma return n; &$'z } \8S~c8Z~ uI~s8{0T6 )[L^Dmd, } 0fm*`4Q D f4+^B,1 5!I4l1 /* Q8D&tJg **SiteInfoBean.java lhH`dG D */ a2w T6jY package NetFox; Ml?~
|_ j'?7D0> YAVy9$N- public class SiteInfoBean {
7I=C+ J@_ctGv %'
$o" private String sSiteURL; //Site's URL ujFzJdp3k private String sFilePath; //Saved File's Path s&a1y~rv private String sFileName; //Saved File's Name Aw5pd7qKL private int nSplitter; //Count of Splited Downloading File a(IY\q[Wh *T`-|H*6@ J-xS:Ha'l public SiteInfoBean() yF13Of^l./ {//nSplitter的缺省值为5 :O-iykXyI //default value of nSplitter is 5 <IJu7t> this("","","",5); (xl\J/ } d>0+A)6> K4Sk+
v yNg9X(U public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) $P z`$~ { ,CvG 20> sSiteURL= sURL; <eN_1NTH_ sFilePath = sPath; 'sh~,+g sFileName = sName; j}1zdA this.nSplitter = nSpiltter; mYxyWB dq\FBwfe |4(~%| 8{ } NTo!'p:s vb
Y3;+M> y [#pC<^ public String getSSiteURL() =<}<Ny { K+*Q@R D return sSiteURL; 6$U]9D } m)v''`9LU "_|oW n j.e0;!
(L} public void setSSiteURL(String value) hR#-u1C { F&RgT1* sSiteURL = value; L<^j"!0 } = ?D(g q h/F }`(N:p public String getSFilePath() ;0rGiWC# { 'e)^m}:?D return sFilePath; j/`94'Y } dU) ]:>Uz a"N4~?US Y;4!i?el public void setSFilePath(String value) ldha|s.* { r;BT,jiX sFilePath = value; +mj*o( } te|?)j ^I8Esl8 ncu`vYI. public String getSFileName() N;Dp~(1
J1 { >F1kR\! return sFileName; dZ#&YG)?e } {7u[1[L1 ~Q{QM: k [.se|]t7X public void setSFileName(String value) N`iwC! { PZxAH9 S? sFileName = value; <+MyZM(z> } ]i(-I <` 8Jf.ECQT 9.'h^#C public int getNSplitter() [(Xy.L7x { *IgE)N> return nSplitter; |-sPLU&s% } F+R?a+e kiUGZ^k\s :B3[:MpL} public void setNSplitter(int nCount) j',W 64 { k@zy nSplitter = nCount; 0a8/B>
} XO#/Fv! } vEf4HZ&w hfpJ+[ XL#[%X9 /* {{V8;y
**Utility.java !cKz7?w */ =qN2Xg/ package NetFox; rpeJkG@+ SJD@&m%?[ 9T#;,{VQ public class Utility { P96pm6H_; +]=e;LN $0 EY*(Bw public Utility() fYKO J5f { C{TA.\ hxce\OuU0h " \I4u{zC } "KcA n>@oBG)! //线程睡眠 W3`>8v1?o public static void sleep(int nSecond) pv|Pm { f{SB1M try{ @`\VBW Thread.sleep(nSecond); (&/2\0QV } }VDqj}is catch(Exception e) hW{j\@R { *s@Qtgu e.printStackTrace (); U
qG
.:@T } +`3!I } V_plq6z P[s8JDqu //日志 fw ,\DFHO public static void log(String sMsg) ^C2\`jLMY { U,nEbKJgk System.err.println(sMsg); KWLbD# } WJI[9@^I~ A?Bif; ECv)v public static void log(int sMsg) /}-CvSR { ^vG8#A}] System.err.println(sMsg); 6e&>rq6C } >0Q|nCx } ~]ZpA-*@Ut N !TW! (O0Urm /* R|i/lEq **TestMethod.java Da"j E */ i2~ package NetFox; V5}B:SUB s-dLZ.9F 2<M= L1\ public class TestMethod { Df3rV '/~ 6 uKTGc4 &89oO@5 public TestMethod() 0uBl>A7qhn { ///xx/weblogic60b2_win.exe 2NB L}x try{ i<pk6rO1 SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); 5d Z |! //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 1sYEZO; SiteFileFetch fileFetch = new SiteFileFetch(bean); m3o,@=b fileFetch.start(); O%r; 5kP } ;WldHaZ9r catch(Exception e){e.printStackTrace ();} ^MBm==heL =4 h+
M$2 ~c6} } Ivb4P`{ SNY~9:;]f #s!'+|2n public static void main(String[] args) TX#m&vh { z({hiVs new TestMethod(); _{M\Bs2< } z0/}
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