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/* Io1j%T#ZT **SiteFileFetch.java %_ibe */ jYHn J}< package NetFox; \8 `7E1d import java.io.*; QB*,+u4 import java.net.*; i6WH^IQ M nm- 2.D2
o public class SiteFileFetch extends Thread { wq$$.
.E tk&AZb,sP ;xZ+1zmL0 SiteInfoBean siteInfoBean = null; //文件信息Bean _MBhwNBxZ long[] nStartPos; //开始位置 hOY@vm& long[] nEndPos; //结束位置 >}+{;d FileSplitterFetch[] fileSplitterFetch; //子线程对象 fg^AEn1i long nFileLength; //文件长度 #ibwD:{ boolean bFirst = true; //是否第一次取文件 fp)SZu_* boolean bStop = false; //停止标志 ]n!V File tmpFile; //文件下载的临时信息 Mu\V3`j DataOutputStream output; //输出到文件的输出流 T/_u;My; =AIFu\9#a` //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) E^1yU public SiteFileFetch(SiteInfoBean bean) throws IOException }QFL { *;fTiL siteInfoBean = bean; i#[8I-OtN/ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); g8<ODU0[g tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); q)?%END if(tmpFile.exists ()) ?UtKu { A2|Bbqd bFirst = false; >)kKP8l7 read_nPos(); V<QpC5 } 1l,fK)z else )|~&(+Q?] { qyz%9 9 nStartPos = new long[bean.getNSplitter()]; B\J[O5}, nEndPos = new long[bean.getNSplitter()]; j&8YE7 } 6}^x#9\ y2A\7&7 @t%da^-HS" .U!EA0B } uY]';OtG 7=P)` @ 4uXGpsL public void run() K4Q{U@ZJ { OrkcY39"~a //获得文件长度 &FXf]9
_X //分割文件 gP%<<yl //实例FileSplitterFetch 3:,%>#" //启动FileSplitterFetch线程 !> sA.L&= //等待子线程返回 ~7:q+\ try{ `<YMkp[ if(bFirst) QVT0.GzR { D!`[fjs6A nFileLength = getFileSize(); ef)RlzLOq if(nFileLength == -1) TGJz[Ny { Wg|6{'a System.err.println("File Length is not known!"); REh"/d } 8W&1"h` else if(nFileLength == -2) K*@?BE { k79OMf<v System.err.println("File is not access!");
3f`Uoh+ } K)'[^V Xh else )I%M]K]F { 0~nX7 for(int i=0;i<nStartPos.length;i++) 6s@!Yn|? { v}DNeIh~ nStartPos = (long)(i*(nFileLength/nStartPos.length)); 7ys' [G|}r } @K"$M>n$Z for(int i=0;i<nEndPos.length-1;i++) YEv\!%B { If&))$7u nEndPos = nStartPos[i+1]; h% -=8l, } @/#G2<Vp1 nEndPos[nEndPos.length-1] = nFileLength; awzlLI<2p } u>'0Xo9R } +3))G 02]HwsvZ <aPZE6z //启动子线程 D[>:az` fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; =v3o)lU for(int i=0;i<nStartPos.length;i++) 7J9<B5U { #VhdYDbW fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), y;az&T siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), [Q T ;~5 nStartPos,nEndPos,i); \n}%RD-Ce Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ,LBj$U]e|E fileSplitterFetch.start(); R~=c1bpdq } z(A60b} // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), fHaF9o+/b siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); {L$$"r, // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", (6fD5XtS nEndPos = " + nFileLength); -c>3|bo // fileSplitterFetch[nPos.length-1].start(); ndQw> PcsYy]Q/ Wps^wY //等待子线程结束 DcxT6[ //int count = 0; *$cx7yJ //是否结束while循环 %R5- 6 boolean breakWhile = false; e/4C` J- myo4`oH H ezbCwsx& while(!bStop) U%Fa.bL~ { +=W(c8~P write_nPos(); BiU>h.4=\( Utility.sleep(500); P*k n}: breakWhile = true; 3uw3[
SR1 N!7?D'y
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h!q+ for(int i=0;i<nStartPos.length;i++) 5B%KiE&p { LDegJer-v if(!fileSplitterFetch.bDownOver) o"qxR'V { O}C*weU breakWhile = false; 6EY\ break; tO&n$$ } ^4IJL", } I!!cA?W if(breakWhile) ;Qt%>Uo8 break; @CM5e! KEy8EB 5Y;&L!T //count++; hvI#D>Z!Yp //if(count>4) mBL?2~M // siteStop(); g8/ ,E-u } eJf]"- 8A0a/
7Lj wtbN@g0 System.err.println("文件下载结束!"); 2 6}3 } q"269W: catch(Exception e){e.printStackTrace ();} ~;b}_?%o } 9<&*iIrM _ow7E\70 \E c*Gq?. //获得文件长度 [$} \Gv public long getFileSize() _gH$
,.j/ { -V2f.QE% int nFileLength = -1; bRggt6$z try{ 0[H/>%3O URL url = new URL(siteInfoBean.getSSiteURL()); {*;K>%r\o HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); P*[wB_^&UP httpConnection.setRequestProperty("User-Agent","NetFox"); }x|q*E\ 9y[U\[H iYiTkq int responseCode=httpConnection.getResponseCode(); &CQ28WG X if(responseCode>=400) ]fDb|s48 { _|; d
D processErrorCode(responseCode); ;P'5RCqj return -2; //-2 represent access is error Y{~`g(~9_A } <0Y<9+g! K:13t| ,5U[#6^ String sHeader; k v_t6 (qd {^Q,G x( M:.+^.h for(int i=1;;i++) O=LW[h! { ZG +FX:v //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); P@bPdw!JA //Utility.log(in.readLine()); K20Hh7cVJ sHeader=httpConnection.getHeaderFieldKey(i); h}tC+_"D if(sHeader!=null) {ZdF6~+H(! { W NeBthq6 if(sHeader.equals("Content-Length")) \(`2 @ { Y9-F\t=~ nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); >tkz%;6 break; yFd .tQs } .p Mwa } :W>PKW`^ else J(8?6&=ck break; 4C?4M; } )Ft+eMYti[ } ?c8(<_I+ catch(IOException e){e.printStackTrace ();} Wm{ebx catch(Exception e){e.printStackTrace ();} \FX"A# n2_;:= yIr0D6L Utility.log(nFileLength); /]0SF_dZ l['p^-I M*cF'go return nFileLength;
Oc,HnyV+ } OVxg9 *Ej;}KSv 0nBDF79 //保存下载信息(文件指针位置) }%c>Hh private void write_nPos() |Y6;8e`H { _B^X3EOc try{ Xk'Pc0@a output = new DataOutputStream(new FileOutputStream(tmpFile)); pyX:$j2R+% output.writeInt(nStartPos.length); B[h^] k for(int i=0;i<nStartPos.length;i++) LN.*gGl { \N-3JO Vy // output.writeLong(nPos); x|AND]^Q output.writeLong(fileSplitterFetch.nStartPos); .nNZdta&= output.writeLong(fileSplitterFetch.nEndPos); $y.0h( } mJ(ElDG output.close(); 7;Lv_Y"b } Xf"<
>M catch(IOException e){e.printStackTrace ();} O8>&J-+2 catch(Exception e){e.printStackTrace ();} raSga'uT; } rtbV*@Z p(="73 _E8Cvaob //读取保存的下载信息(文件指针位置) :.=j)ljTx private void read_nPos() Gj%q:[r { 4i&Rd1#0dI try{ 8mLW^R:` DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); $0OOH4 int nCount = input.readInt(); &PApO{#Q nStartPos = new long[nCount]; S[hyN7sI nEndPos = new long[nCount]; +e.w]\} for(int i=0;i<nStartPos.length;i++) T~L V\}h { q$b4S4Z7 nStartPos = input.readLong(); _NwHT`O[ nEndPos = input.readLong(); br TP}A } 9@IL5 47V input.close(); NX8hFwR } 2"shB(:z> catch(IOException e){e.printStackTrace ();} QBi]gT@&g catch(Exception e){e.printStackTrace ();} }CZw'fhVWO }
JC9$"0d7 g]N'6La tcRJ1:d private void processErrorCode(int nErrorCode) a9 q:e { oclU)f., System.err.println("Error Code : " + nErrorCode); 9c*B%A8J } ")txFe oD9L5c) An`*![ //停止文件下载 CCt\[hl public void siteStop() <s\ZqL$f { h 6IXD N bStop = true; fE)o-q6Z for(int i=0;i<nStartPos.length;i++) E`@Z9k1 ` fileSplitterFetch.splitterStop(); 3OKs?i3A z$d<ep{6 \o72VHG66 } ."O%pL]!/b } h6?Z //负责部分文件的抓取 z$~F9Es9 **FileSplitterFetch.java I
S'Uuuz7g */ %K=_ package NetFox; .L;e:cvx <Uj9~yVN] {J/Fp# import java.io.*; b5Q>e%i# import java.net.*; m__pQu: l1O"hd'~s IoK/ 2Gp public class FileSplitterFetch extends Thread { "lt5gu! `u :/Es%z
D >mR8@kob< String sURL; //File URL v[8+fd)}S long nStartPos; //File Snippet Start Position T2.[iD!A long nEndPos; //File Snippet End Position ITn PF{N int nThreadID; //Thread's ID n|rKo<Y0 boolean bDownOver = false; //Downing is over ~LOE^6C+~o boolean bStop = false; //Stop identical IFS_DW FileAccessI fileAccessI = null; //File Access interface q3h&V dT?3Q;>B? z5~W
>r public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException nfGI4ZE { kQ lwl9 this.sURL = sURL; %.$7-+:7A this.nStartPos = nStart; t&[<Dl/L this.nEndPos = nEnd; Yc_(g0NK nThreadID = id; H=f|X<8 fileAccessI = new FileAccessI(sName,nStartPos);//定位 ]b sabS? } M3|G^q:l dkCUU '6>*J public void run() <LXx_{=: { SZ$WC8AX while(nStartPos < nEndPos && !bStop) v3XM-+Z4 { z,^~H p nI= )78T+7Kq try{ 0jjtx'F URL url = new URL(sURL); %+Z*-iX HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); BbCO K httpConnection.setRequestProperty("User-Agent","NetFox"); woPj>M String sProperty = "bytes="+nStartPos+"-"; t8xXGWk0 httpConnection.setRequestProperty("RANGE",sProperty); .PR+_a-X Utility.log(sProperty); J,u-)9yBA< fG$LqzyqlK 0{8L^
jB/ InputStream input = httpConnection.getInputStream(); %-.;sO=g //logResponseHead(httpConnection); rvd%z7Z1o EEL3~H{( S7PWP<9 byte[] b = new byte[1024]; \#B<'J9.` int nRead; iQ2j ejd3( while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) S
>CKm:7 { 6},[HpXRc4 nStartPos += fileAccessI.write(b,0,nRead); |m
?ZE: //if(nThreadID == 1) ^w.]1x // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); G\;6n } NY^0$h i-5,*0e6m /"u37f?[^ Utility.log("Thread " + nThreadID + " is over!"); Rq[d\BN0.d bDownOver = true; Ur>1eN%9' //nPos = fileAccessI.write (b,0,nRead); uh2_Rzln } 73Jm catch(Exception e){e.printStackTrace ();} 7X/t2Vih@ } #+AQ:+ } Q1?*+] y*-_ fPPP| //打印回应的头信息 SZHgXl3: public void logResponseHead(HttpURLConnection con) pWJEFm { *`Vm ncv3 for(int i=1;;i++) `V\?YS} { =D Q:0w String header=con.getHeaderFieldKey(i); p&]V!O if(header!=null) {A:uy //responseHeaders.put(header,httpConnection.getHeaderField(header)); DR:$urU$ Utility.log(header+" : "+con.getHeaderField(header)); }AJoF41X else hp9U break; A!x &,< } a6e{bAuq } bSX/)')jU mJ k\$/Kh )(-;H|]? public void splitterStop() DyGls8<\! { -YKy"
bStop = true; ]FTi2B{}H } >5L_t IY#:v%U 9N}\>L)_ } 5Q"w{ n {o)pwM"@( ZDR@VYi+~ /* C=r2fc~w **FileAccess.java Em@:QmEN *//文件访问(定位,写) rHX^bcYK package NetFox; W_Y8)KxG:L import java.io.*; :Q3pP"H,} #m{*]mY@ P%(9 `A public class FileAccessI implements Serializable{ p,$N-22a {.{Wl,|7 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 <c pck RandomAccessFile oSavedFile; tULGfvp long nPos; bP9ly9FH @3O)#r}\ "yaxHd public FileAccessI() throws IOException SXOAa<u5 { PLc5m5 this("",0); D@*<O=_D( } f;zNNx<
; m3lz#Pm'0 .=#jdc/ public FileAccessI(String sName,long nPos) throws IOException CG=c@-"n/ { &9#m]Mz oSavedFile = new RandomAccessFile(sName,"rw"); 6-
i.*!I 8 this.nPos = nPos; _f^KP@^j oSavedFile.seek(nPos); r8Pd}ptPU } JL= c IH8 chE!,gik hb5K"9Y public synchronized int write(byte[] b,int nStart,int nLen) '|^:,@8P9 { PWpt\g int n = -1; p1Zb&:+ try{ ([u|j oSavedFile.write(b,nStart,nLen); XTJD> n = nLen; |0y#} |/ } U+)p'%f; catch(IOException e) y3dk4s77 { LEgP-sW e.printStackTrace (); FRrp@hE } \@:,A] YS9RfK/ NFs 5XpZ~ return n; :-k|jt } `R[ZY!=+ &&X,1/ ,JV0ib, } RU:Rt' @%R<3!3v '+cI W(F? /* y~
=H`PAE **SiteInfoBean.java `um,S */ ssi7)0 package NetFox; MePD:;mm^ $>XeC}"x68 ~t`s&t'c| public class SiteInfoBean { ?0VR2Yb${b yJm"vN c[dzO.~ private String sSiteURL; //Site's URL ]yU"J:/ private String sFilePath; //Saved File's Path HB/V4ki private String sFileName; //Saved File's Name WVbrbs4 private int nSplitter; //Count of Splited Downloading File fSuykbZ hi0HEm\ 8vY-bm,e public SiteInfoBean() >d 2Fa4u3 {//nSplitter的缺省值为5 5~JT*Ny //default value of nSplitter is 5 `Z?wj@H1` this("","","",5); ;<AcW.jx } EiW|+@1 /fr> Fd jmM|on! public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 6Dq4Q|C { #.bW9j/ sSiteURL= sURL; $"^K~5Q sFilePath = sPath; qos7u91z sFileName = sName; u*l|MIi6J this.nSplitter = nSpiltter; L_8zZ8 o Z'JS@dV B[t^u\Fk } S\e&xUA;| xAQtX=FoX+ |W">&Rb<t# public String getSSiteURL() @c3xUK { &_ekA44E return sSiteURL; |^pev2g } ]k0
jmE NK_|h% {m.$EoS public void setSSiteURL(String value) <>cS@V5j { Ux[<g%F" sSiteURL = value; V2YK T,5 } M?$[WS >Jz9wo` !~@GIr public String getSFilePath() UNdD2Fd9 { Y`|+sND return sFilePath; m~ tvuz I } >H2`4]4] RLB3 -=9t #%0V`BS7n public void setSFilePath(String value) ~C.*Vc?| { 0+1wi4wy/ sFilePath = value; 1uw#;3<L } E9HMhUe > VG H",B[
YK public String getSFileName() _'u]{X\k{J { EdJL&* return sFileName; )D)5
`n) } ^QB[;g.O ^PksXfk J3K=z public void setSFileName(String value) 7|P
kc(O { U@lc1# sFileName = value; tT$OnZu& } l\HdB"nT aER|5!7(2\ mP(3[a_Q public int getNSplitter() @fL ^I&++ { OZ,kz2SF# return nSplitter; /HC:H,"i } p5Q]/DhG f^WTsh]
--$o$EP` public void setNSplitter(int nCount) v<qh;2 { '=\}dav! nSplitter = nCount; h~MV=7
lE } Y Y:BwW: } Zo9<96I& JE?p'77C V|7YRa@ /* L+%"ew **Utility.java vh9* >[i */ =P-&dN package NetFox; `+JFvn! 1SQATUV gt&|T
j public class Utility { ~}/Dl#9R! l^B.iB E_HB[9 public Utility() o_b[ * { cPGlT" |m19fg3u
PJnC } <P9fNBGa Y4T") //线程睡眠 "}]`64? public static void sleep(int nSecond) # kI> { R#(0C(FI^ try{ F /b`[ Thread.sleep(nSecond); X>%nzY]m } 3P>gDQP catch(Exception e) _`$LdqgE { uFd$*`jS e.printStackTrace (); q^@*{H } +)Te)^&v% } Z5{a7U4z_ &dtk&P{ //日志 <G"cgN#] public static void log(String sMsg) bRC243]g*A { #%"q0" System.err.println(sMsg); 4 p_C+4 } ] m]`J|%i bP,<^zA|X r@r%qkh(.@ public static void log(int sMsg) ]AP1+
&9fN { GnV0~? System.err.println(sMsg); <?jdNM } ,CO2d)} } vG&>-Z yev!Nw vL/ 3(Bo7 /* X/]@EF **TestMethod.java C2LPLquD+
*/ x"W~m.y$h package NetFox;
K
+7 e4X
df>B N&8TG public class TestMethod { ?M2(80 WxdQ^#AE )cfi@-J+# public TestMethod() myx/ |-V"F { ///xx/weblogic60b2_win.exe #kg`rrFr try{ ^<]'?4m] SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); tz1@s nes //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); ^Fk;t SiteFileFetch fileFetch = new SiteFileFetch(bean); Q&m85'r5X fileFetch.start(); Jx*cq;`Vee } c?::l+ catch(Exception e){e.printStackTrace ();} 77e*9/6@ ^df wWP Z['.RF'` } +^I0>\ GqFx^dY4* ;yH>A ;,K% public static void main(String[] args) CjdM*#9lW { CB7dr&> new TestMethod(); =j]y?;7q } w+o5iPLX } ];r!
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