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/* /+<G@+( **SiteFileFetch.java 4y)6!p */ 1Fsa}UK package NetFox; H.Z<T{y;
import java.io.*; : t
D`e< import java.net.*; ;Rxc(tR!n aMK\&yZD z2A,*|I public class SiteFileFetch extends Thread { 9+Wf*:*EW NwKj@ Jos nGDY::nUE SiteInfoBean siteInfoBean = null; //文件信息Bean &`g^b^i long[] nStartPos; //开始位置 H-%
B<7 long[] nEndPos; //结束位置 WxJaE;`Ige FileSplitterFetch[] fileSplitterFetch; //子线程对象 2/))Y\~
long nFileLength; //文件长度 4?_^7(%p boolean bFirst = true; //是否第一次取文件 R<r,&X?m boolean bStop = false; //停止标志 Fbw.Y6 File tmpFile; //文件下载的临时信息 M3fTUCR DataOutputStream output; //输出到文件的输出流 ]<;y_ I
'ha=PeVn //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) =+VDb5= TV public SiteFileFetch(SiteInfoBean bean) throws IOException z
wn#E { :@Ml-ZE siteInfoBean = bean; (F#2z\$; //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); D4{<~/oBv tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); LmKY$~5P if(tmpFile.exists ()) 2H1?f|0> { kb\\F:w(W bFirst = false; Eb&=$4c= read_nPos(); UD&pL'{s } ]~pM;6Pu0 else 5IRUG)Icr { /W{^hVkvC nStartPos = new long[bean.getNSplitter()]; w,1*dn nEndPos = new long[bean.getNSplitter()]; 94lz?-j } ~'Korxa i66/2BUh. `@&WELFv{ GCrsf } EO/TuKt ,H/BW`rL]# u&j_;Y !6 public void run() #Fh:z4 { S:cd'68D //获得文件长度 S;u2B_/ //分割文件 -;YhQxxC}L //实例FileSplitterFetch h\6 t\_^\ //启动FileSplitterFetch线程 0<Rq //等待子线程返回 Q^'xVS_. try{ ^ b{~]I if(bFirst) Jn\>Sz(96 { N8*QAekN nFileLength = getFileSize(); m&--$sr if(nFileLength == -1) qjN*oM, { ;YrmT9Jx6 System.err.println("File Length is not known!"); |-]'~@~ } !3ji]q;uF else if(nFileLength == -2) c`UizZ { =_$Hn>vO System.err.println("File is not access!"); 4@jX{{^6% } ^aqBL else q3u:Tpn4% { k P=~L=cK for(int i=0;i<nStartPos.length;i++) `cFNO: { g9F?j nStartPos = (long)(i*(nFileLength/nStartPos.length)); iG{xDj{CKv } 6^ ,;^ for(int i=0;i<nEndPos.length-1;i++) %\1W0%w { O~5*X f nEndPos = nStartPos[i+1]; EuKkIr/( } =BO>Bi&& nEndPos[nEndPos.length-1] = nFileLength; C:vVFU|4 } 4=l$wg~; } fy>~GFk( `>HrO}x^ x.q "FXu //启动子线程 &iaS3x fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 3#{Al[jq for(int i=0;i<nStartPos.length;i++) 5>fAO =u!Q { Z1U@xQj fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), I(qFIV+HR siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), CE|rn8MB nStartPos,nEndPos,i); Lr*\LP6jx3 Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos);
[$`%ve fileSplitterFetch.start(); }k@SmO8 } mv#*%St5 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(),
tPFj[Y~Iy siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); O0sLcuT$ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", vSwRj<|CF nEndPos = " + nFileLength); (~?p`g+I.P // fileSplitterFetch[nPos.length-1].start(); [`!%u3 n"Wlfd0 ,3Aiz|v- //等待子线程结束 scy_ //int count = 0; V=H :`n3k //是否结束while循环 Bm+Ca:p% boolean breakWhile = false; +?6@%mW' Bk/&H-NI &&
b;Wr while(!bStop) xks Me { 2k^'}7G% write_nPos(); {vp*m:K Utility.sleep(500); [G"Va_A8 breakWhile = true; r"`7ezun: kTm}VTr
1 gCx#&aXS for(int i=0;i<nStartPos.length;i++) 2u(G:cR { sE[
Yg8yAt if(!fileSplitterFetch.bDownOver) h*\u0yD) { bv}e[yH breakWhile = false; f8)fm2^09 break; BR:Mcc } *eMMfxFl } C40o_1g if(breakWhile) 8Y/1+- break; (P-$tHt y N,grU( k\-h-0[| //count++; ur[^/lxx0 //if(count>4) kG`&Z9P // siteStop(); dEZlJo@J } XmN8S_M>v _P*QX wv^n# System.err.println("文件下载结束!"); M<P8u`)>4H } :a9 catch(Exception e){e.printStackTrace ();} tNz(s) } VPb8dv(a3 Qw<&N$ xcH&B%;f //获得文件长度 9A *gW j public long getFileSize() ]D,\(| { 4B)%I` int nFileLength = -1; [OR"9W& try{ Yh;A)Np URL url = new URL(siteInfoBean.getSSiteURL()); KCnm_4 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 6i@* L\
Dl httpConnection.setRequestProperty("User-Agent","NetFox"); kq@~QI?9 /dHIm`. Z uc/W/c u, int responseCode=httpConnection.getResponseCode(); `yO'-(@"gY if(responseCode>=400) BO.Db`` { &_74h);2I: processErrorCode(responseCode); ~yJJ00% return -2; //-2 represent access is error %Rk DR } Z}.ZTEB Z{ 1B:aW MfO:BX@$ String sHeader; BlqISyrY &d\ y:7 *q+X?3 for(int i=1;;i++) "<LWz&e^^ { A#Y:VavQ? //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 1x%B`d //Utility.log(in.readLine()); ?hViOh$. sHeader=httpConnection.getHeaderFieldKey(i); $=) Pky-~ if(sHeader!=null) gFsqCx<q {
Z58{YC Y if(sHeader.equals("Content-Length")) n]i#&[*A( { Sb(OG 6 nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); Hz)i.AA 4 break; Xt
+9z } (>NZYPw^3 } b`@J"E} else :>U+HQll break; p}<60O"r$ } wE}Wh5 } =[LorvX+ catch(IOException e){e.printStackTrace ();} 7*"Jx}eM catch(Exception e){e.printStackTrace ();} [2h.5.af MdmN7> !#=3>\np+X Utility.log(nFileLength); P^tTg (|NC xey l qKj;' return nFileLength; !-%XrU8o3 } " m13HS keFH
CC 2t
PfIg //保存下载信息(文件指针位置) {Ay dt8 private void write_nPos() "%p7ft { T^(> 8/O try{ _54gqD2C,
output = new DataOutputStream(new FileOutputStream(tmpFile)); }
!y5hv!_ output.writeInt(nStartPos.length); LD1&8kJ*l for(int i=0;i<nStartPos.length;i++) cnI5G! { @bJIN]R // output.writeLong(nPos); ^39lUKL output.writeLong(fileSplitterFetch.nStartPos); v; R2,`[W output.writeLong(fileSplitterFetch.nEndPos); ~?FhQd\Q } gn&Zt}@[ output.close(); imeE& }
Hf\sF(, ( catch(IOException e){e.printStackTrace ();} kguZ AO6 catch(Exception e){e.printStackTrace ();} +@~WKa }
6su~SPh |<5F08]v Fm,` ]CO //读取保存的下载信息(文件指针位置) `j(._`8%a private void read_nPos() /R&h#;l { Gx6%Z$2n try{ zRou~Kxi DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); o+7)cI int nCount = input.readInt(); =/`]lY& nStartPos = new long[nCount]; oeB'{bG nEndPos = new long[nCount]; cR_ pC
9z for(int i=0;i<nStartPos.length;i++) D}LM(s3li7 { OF+4Mq nStartPos = input.readLong(); R TpNxr{[ nEndPos = input.readLong(); P^Owgr=Y }
-0x Q'1I input.close(); x7U=1y( } XbB(<\0+ catch(IOException e){e.printStackTrace ();} P_w4
DU catch(Exception e){e.printStackTrace ();} ".N+nM~ } p @nj6N.-- {:|3V 7X %1.F;-GdsW private void processErrorCode(int nErrorCode) YO$D- { f&mi nBU System.err.println("Error Code : " + nErrorCode); BdF/(Pg } yCvtglAJ4 brs`R#e \ ninWnQq //停止文件下载 7HBf^N. public void siteStop() &i(Ip'r { KE@+I.x bStop = true; 5a$EXV for(int i=0;i<nStartPos.length;i++) [`t ;or fileSplitterFetch.splitterStop(); C5 Q!_x( U/^#nU., b%%r`j,'JE } tP7<WGHd/ } S`U8\KTi //负责部分文件的抓取 o3/o2[s **FileSplitterFetch.java #-<Go'yF */ 4&sf{tI package NetFox; ?'z/S5&j CV.|~K0O &h5Y_no GX import java.io.*; Xt<1b import java.net.*; lz~^*\ F %DYh<U4N "(7y%TFt: public class FileSplitterFetch extends Thread { A*?PH`bY d\l{tmte j2<+[h- String sURL; //File URL .R)P
|@z L long nStartPos; //File Snippet Start Position YHQ]]#' long nEndPos; //File Snippet End Position hm! J@ int nThreadID; //Thread's ID jts0ZFHc- boolean bDownOver = false; //Downing is over z R?R,k)m boolean bStop = false; //Stop identical 6dR+qJa6i FileAccessI fileAccessI = null; //File Access interface jJ$B^Y"4 'E3T fM 1vj@qw3 public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 4d5c]% { aC\f;&P> this.sURL = sURL; z&amYwQcI this.nStartPos = nStart; 9 A ?{}c this.nEndPos = nEnd; =wdh#{ nThreadID = id; R+Hu?Dv&F fileAccessI = new FileAccessI(sName,nStartPos);//定位 |p&EP2?T } BZ?3=S1* S3ooG1 4Ls eV|N@ public void run() "dX~J3$ { DOKe.k while(nStartPos < nEndPos && !bStop) kg]6q T;Y { J 7R(X J&>@>47 5MB`yRVv try{ I]v2-rB&- URL url = new URL(sURL); P);s0Y|@H HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ?f"5yQ-B httpConnection.setRequestProperty("User-Agent","NetFox"); TjTG+uQ String sProperty = "bytes="+nStartPos+"-"; sip4,>,E httpConnection.setRequestProperty("RANGE",sProperty); G|rE\h 2w Utility.log(sProperty); :@[\(: f47]gtB- EVX3uC}{ InputStream input = httpConnection.getInputStream(); ju{Y6XJ) //logResponseHead(httpConnection); B-rE8\ b?i+nhqI CvY+b^ ; byte[] b = new byte[1024]; hTX[W%K int nRead; Bdt6 w(`^ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) &L+uu',M0c { \Mg_Q$ nStartPos += fileAccessI.write(b,0,nRead); <b zzbR[F //if(nThreadID == 1) "=Br&FN{| // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 1 P!)4W }
[P`e@$ mZR3Hl$ #{q.s[g*+1 Utility.log("Thread " + nThreadID + " is over!"); d2`g,~d bDownOver = true; P"_/P8 //nPos = fileAccessI.write (b,0,nRead); RhE~-b[X } Ik0g(-d catch(Exception e){e.printStackTrace ();} (?|M'gZ } p"ytt|H
} p0@^1 GEWjQ;g v745FIy< //打印回应的头信息 z$%twBg}# public void logResponseHead(HttpURLConnection con) eIkKsgr> { Food<(!.> for(int i=1;;i++) ^<CVQ8R7 { `pfIgryns String header=con.getHeaderFieldKey(i); *U[yeE]. if(header!=null) @Dh2@2`> //responseHeaders.put(header,httpConnection.getHeaderField(header)); FOXSs8"c]! Utility.log(header+" : "+con.getHeaderField(header)); l*1|B3#m! else k7CKl;Fck break; ' P?h?w^T } faQmkO } !RI _Uph ~5N}P>4* P1-eDHYw public void splitterStop() bC<W7qf]} { Y$=jAN bStop = true; bE _8NA"2 } j]BRf A g_Z
tDxz L.HeBeO } puC91 ;,&cWz 3v8LzS3@ /* vgwpuRL5b **FileAccess.java U] LDi8 *//文件访问(定位,写) 5'} V`?S package NetFox; 1F@j?)( import java.io.*; v-{g UT<e/ u:l-qD9=( public class FileAccessI implements Serializable{ entU+O r -'&/7e6>y //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 [;u#79aE RandomAccessFile oSavedFile; MR#*/Iw~ long nPos; za_b jE tk"+ u_u w nuce(R public FileAccessI() throws IOException X94a { mJSfn"b}K this("",0); c#n
2! } }s~c(sL?; Y sM*d OIcXelS:@k public FileAccessI(String sName,long nPos) throws IOException `z|0O { #a8kA"X oSavedFile = new RandomAccessFile(sName,"rw"); .IeO+RDQ this.nPos = nPos; bKQho31a'
oSavedFile.seek(nPos); M-o'`e' } WMB%?30 2*:q$ c n>Ff tVZNJ public synchronized int write(byte[] b,int nStart,int nLen) s<O$
Y { ~aob@( int n = -1; 8SGaS& try{ 9wvlR6z;u oSavedFile.write(b,nStart,nLen); QQ(}71U n = nLen; L+am-k:T~ } 3Ua?^2l catch(IOException e) RzEzNV { b#VtPn] e.printStackTrace (); 3!CUJs/W }
I1Q!3P GcBqe=/B! Yuvi{ 0 return n;
}v ZOPTP } *1)>He$qL GJ ^c^` ./YR8 #, } }HgG<.H> @>2pY_ +9_Y0<C /* &hOz(825r **SiteInfoBean.java SVCh!/qe\ */ MGg(d package NetFox; ]fyfL|(; V1aP_G-: hOj{y2sc public class SiteInfoBean { @62T:Vl '}.Yf_ /R#zu_i private String sSiteURL; //Site's URL ">H*InF private String sFilePath; //Saved File's Path {9x_E { private String sFileName; //Saved File's Name t<H"J__& private int nSplitter; //Count of Splited Downloading File At Wv9 @*6fEG{,q \x<8 public SiteInfoBean() g) X3:=[' {//nSplitter的缺省值为5 /fI}QY1 //default value of nSplitter is 5 1dH|/9 this("","","",5); ^? fOccfQ{ } =xI;D,@S IKD{3cVL cn'>dz3v public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) m:H^m/g { m^A2
8X7 sSiteURL= sURL; Blpk
n1 sFilePath = sPath; xTHD_?d sFileName = sName; TGCB=e this.nSplitter = nSpiltter; S$mv(C !=[Y yh q}{E![ZTu } ) c@gRb~ 8D*7{Q 1.3#PdMR, public String getSSiteURL() q
W(@p` { M:+CW;||! return sSiteURL; ,-UF5U } ,Z`}!%? H/,KY/>i eaw!5]huu public void setSSiteURL(String value) ^m\o(R { 8g#$Y2P sSiteURL = value; LmrdVSs_ } &.A_d+K& wi2`5G6|z ^z?b6kTC public String getSFilePath() (v]%kXy/G { 3?93Pj3oPt return sFilePath; 3[m~-8 } @r"\bBi mqSVd^ }lZEdF9GhG public void setSFilePath(String value) %|-N{> wKy { |XyX%5p* sFilePath = value; h<.5:a } ;UdM8+^/V] E|O&bUMh rOJ>lPs public String getSFileName()
s*uA3}j { q;{(o2g return sFileName; {##G.n\~ } K~(RV4oF8B DUOoTlp g )hEzL0k public void setSFileName(String value) v\xl?F { $>rt0LOF sFileName = value; 3.&BhLT } Iiy5;:CX:q 9{Hs1MD[ zJDHDr public int getNSplitter() -E-#@s { 4n,&,R r# return nSplitter; K?.~}82c } &PMQ]B
[gW eD :jiEn
y public void setNSplitter(int nCount) Fis!MMh.$ { ~
'ZwD/!e nSplitter = nCount; *|rdR2R! } .UK0bxoa } WK%cbFq( XYcZ;Z 9: ;dIk$_FN /* g]~vZj **Utility.java v({O*OR */ %i9S" package NetFox; !6/UwPs {vu\qXmMv oO2DPcK public class Utility { ?9 huuJs7 AR |4^ 91R#/i public Utility() YidcV lOsO { Wa;N(zw0h vC]X>P5 Px *byUqY3( } i?T-6{3I Q 3WD!Z8y //线程睡眠 +d,
~h_7! public static void sleep(int nSecond) VDxm|7 { {;$oC4 try{ k+J3Kl09hM Thread.sleep(nSecond); geQ!}zXWi } l*ltS(? catch(Exception e) ,TBOEu."4 { _c>iux; e.printStackTrace (); BM :x`JY } N* gJu } I~7iIUD f2gtz{r //日志 AG(6. public static void log(String sMsg) f_k'@e { { [-(^>Y System.err.println(sMsg); - %fQr5 } 4"&-a1N (\:Rnl 4Kj.o public static void log(int sMsg) rPk|2l,E,3 { }Rh\JDiQ System.err.println(sMsg); z5@XFaQ } D]~K-[V?l } rWht},-|1 &8IBf8
^J^,@Hf_ /* QE]'Dc% **TestMethod.java Ts!'>_<Je */ (cj9xROx package NetFox; 6Zi{gx juEPUsE Q<sqlh!h public class TestMethod { J2O,wb)U KjGu !B a>j}@8[J public TestMethod() ]B/>=t"E { ///xx/weblogic60b2_win.exe _H$Lu4b)N try{ YZ~MByu SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); 6A"$9sj6 //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); GvVkb==" SiteFileFetch fileFetch = new SiteFileFetch(bean); 7}iv+rQ fileFetch.start(); J;& y?%{@5 } ::Zo` vP catch(Exception e){e.printStackTrace ();} /WQ.,a "#C2+SKM1 3Gs\Q{O: } 3?o4 e!VtDJDS <+QdBp'd; public static void main(String[] args) GDLw_usV { xvl$,\iqE new TestMethod(); v ,")XPY } 8maWF.xq } 5FZw
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