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/* )\VUAD%~e7 **SiteFileFetch.java u0XGtu$4 */ {_[l,tdZ package NetFox; {b/AOR
o import java.io.*; 6Mk@,\1 import java.net.*; `$@1NL7> }clFaT>m? `GPK$ue
public class SiteFileFetch extends Thread { _/E>38G] N.-Ryj&9 YT:<AJm SiteInfoBean siteInfoBean = null; //文件信息Bean qU2>V long[] nStartPos; //开始位置 C7+TnJ long[] nEndPos; //结束位置 k9R1E/; FileSplitterFetch[] fileSplitterFetch; //子线程对象 ' R=o,= long nFileLength; //文件长度 &I!2gf boolean bFirst = true; //是否第一次取文件 :hJhEQH(9 boolean bStop = false; //停止标志 zo\XuoZ File tmpFile; //文件下载的临时信息 ?LNwr[C0 DataOutputStream output; //输出到文件的输出流 ?;{A@icr 4F:RLj9P! //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) L</"m[ public SiteFileFetch(SiteInfoBean bean) throws IOException Brpin { AQ0L9? siteInfoBean = bean; &S|laqH //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); MQG$J!N tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); *Z/B\nb if(tmpFile.exists ()) "
*Ni/p$I { h{PLyWH bFirst = false; ojIh;e read_nPos(); 4&|9304<H } jH:*x$@
= else 6 #{=
E@ { gWWy!H nStartPos = new long[bean.getNSplitter()]; `kj7I{'l%9 nEndPos = new long[bean.getNSplitter()]; Yhlk#>I } &F.lo9JJ >eUAHmXQ| B:x4H}`vh P_ZguNH } K8ThZY% ]e"NJkcm /+IR^WG#C} public void run() MESQAsx% { }W|CIgF* //获得文件长度 gJF;yW4 //分割文件 1m![;Pg3 //实例FileSplitterFetch 'GW@P //启动FileSplitterFetch线程 }y[o[> //等待子线程返回 {O^1WgGc[ try{ 5 !NPqka}. if(bFirst) #bdJ]v.n { 5Cz:$-+ nFileLength = getFileSize(); ~RMOEH.o if(nFileLength == -1) Gu_s:cgB9F { \h0e09& I System.err.println("File Length is not known!"); A6UtpyS*' } oFIs,[Go else if(nFileLength == -2) |x kixf4zz { 0cS.|\ZTA System.err.println("File is not access!"); vMC;5r6*d } >2C;5ba else GuS3O)6Sg { .OWIlT4K for(int i=0;i<nStartPos.length;i++) *aT!|; { XM=`(e
o nStartPos = (long)(i*(nFileLength/nStartPos.length)); L$ ON=$q5 } yNN2}\[. for(int i=0;i<nEndPos.length-1;i++) oNEU?+ { 6"=e+V@ nEndPos = nStartPos[i+1]; %
vP{C } `/|=eQ")o@ nEndPos[nEndPos.length-1] = nFileLength; bC@b9opD } |w>DZG!}1- } {< wq }~ m3|,c[M1 Hv
IN' //启动子线程 p,1RRbyc fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; GdP9Uj)n- for(int i=0;i<nStartPos.length;i++) @ ?%"nK { i2!{.*. fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), \NSwoP siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), $jntT(V nStartPos,nEndPos,i); j1d=$'a " Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ,~kMkBkl~ fileSplitterFetch.start(); 43VuH } }=L
>u>cP // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), uC}YKT>V7 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Cy2X>Tl"<E // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", +5HO T{wj nEndPos = " + nFileLength); Mz{>vb // fileSplitterFetch[nPos.length-1].start(); My1E@< N4}h_mh^' woR)E0'qx //等待子线程结束 SBF3\ //int count = 0; J$P]>By5: //是否结束while循环 N CsUC boolean breakWhile = false; r%a$u%)oD ;x7SY;0* ![V<vIy while(!bStop) +0a',`yc { p1D-Q7F write_nPos(); Ri3m438 Utility.sleep(500); Z?@07Y[|K breakWhile = true; mee-Qq:} UU !I@ ~/Ry=8 for(int i=0;i<nStartPos.length;i++) +tA rH
C] { 9wwvh'T&NK if(!fileSplitterFetch.bDownOver) Fd91Y { FUOvH85f breakWhile = false; N0Y! break; [n^___7 } npe*A } &=UzF if(breakWhile) 2n7[Op break; mR{0*< k |Lm;g c8Opc"UE //count++; {B}0LJIpL //if(count>4) <0vvlOL5 // siteStop(); 4 IHl'*D[# } +GGj*sD \"*l:x-u iVl"H@m/ System.err.println("文件下载结束!"); K~E]Fkw!; } !XicX9n catch(Exception e){e.printStackTrace ();} !hc7i=V? } XR&*g1 `2Z=Lp {P3,jY^ //获得文件长度 h '}5"m public long getFileSize() :G`_IB\ { yA_d${n int nFileLength = -1; 0O:TKgb&C. try{ D"Xm9
( URL url = new URL(siteInfoBean.getSSiteURL()); R5FjJ>JE HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); mB,7YZv httpConnection.setRequestProperty("User-Agent","NetFox"); |~/{lE=I 6`s[PKP. IW46-;l7 int responseCode=httpConnection.getResponseCode(); k^L (q\D if(responseCode>=400) M aEh8* { Vz,WPm$I processErrorCode(responseCode); N,O[pTwj return -2; //-2 represent access is error [J]; } M-Js"cB[ Pf!K()<uJ w9oiu$7), String sHeader; byMO&Lb* Ug"B/UUFd J>'o,"D for(int i=1;;i++) HOw][}M_w { ;L`'xFo>> //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); #8RQ7|7b| //Utility.log(in.readLine()); &@Q3CCDS sHeader=httpConnection.getHeaderFieldKey(i); 'D-imLV<< if(sHeader!=null) Nhf!;> { UO&S6M]v7 if(sHeader.equals("Content-Length")) uaGg8 { Ff,M~zn nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); (&B &
V break; b)V[d8IA } MHbRG_zW } Rl)/[T else E*ic9Za8`h break; 9-@w(kMu } x?%vqg^r } tsk}]@W catch(IOException e){e.printStackTrace ();} RsY<j& f catch(Exception e){e.printStackTrace ();} AiyjrEa% <wuP*vI"h |9Y9pked8 Utility.log(nFileLength); 0Icyi#N mkWIJH XI0O^[/n{ return nFileLength; X3"V1@-i4$ } mA4v 4z Sb`>IlT\# "<&F=gV //保存下载信息(文件指针位置)
PaZ FM private void write_nPos() Qj=l OhM { R_*\?^k|A try{ hsl8@=_ B output = new DataOutputStream(new FileOutputStream(tmpFile)); _
9k^Hd[L$ output.writeInt(nStartPos.length); kgQEg)A]!x for(int i=0;i<nStartPos.length;i++) \<PW_'6 { 6^zv:C% // output.writeLong(nPos); LJiMtqg output.writeLong(fileSplitterFetch.nStartPos); USbiI% output.writeLong(fileSplitterFetch.nEndPos); 06ueE\@Sg } )~5`A*Ku output.close(); $DMeUA\av } #e#8I7P catch(IOException e){e.printStackTrace ();} ;6]+/e7O catch(Exception e){e.printStackTrace ();} !~Z L } =tP|sYR]^ )sL:iGU CEUR-LK0 //读取保存的下载信息(文件指针位置) W w8[d private void read_nPos() 7Ua
Ll
{ & .#0jb1r try{ a@ lK+t DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 2`lit@u&u int nCount = input.readInt(); hA"N&v~ nStartPos = new long[nCount]; tVe*J@i\$ nEndPos = new long[nCount]; ,:#prT[P" for(int i=0;i<nStartPos.length;i++) K.cNx { sz)3
z nStartPos = input.readLong(); F;z FKvn nEndPos = input.readLong(); D~1nh%x_ } fb#Ob0H input.close(); {
~Cqb7 } jem$R/4" catch(IOException e){e.printStackTrace ();} |S4yol catch(Exception e){e.printStackTrace ();} 3v {GP> } O,bj_CW x 5!5P\o s=6w-'; V private void processErrorCode(int nErrorCode) }^QY<Cp| { W=|B3}C? System.err.println("Error Code : " + nErrorCode); pa+y(!G } 6 o+zhi;E P#yS]F/ G U!XD!!& //停止文件下载 eAl&[_o|S public void siteStop() #fFEo)YG { LAr6J bStop = true; YY.;J3C for(int i=0;i<nStartPos.length;i++) #v`G4d fileSplitterFetch.splitterStop(); ;bZ)q J|I|3h<T S'A~9+ } v5*SoUOF } 1.';:/~( //负责部分文件的抓取 ck Tnb **FileSplitterFetch.java u?aq'
"t */ B0YY7od package NetFox; OixQlAb{ Ck[Z(=b$$: C4n5U^ import java.io.*; !|`YNsR import java.net.*; =GLsoc-b
@P~u k S>'wb{jj! public class FileSplitterFetch extends Thread { >#V8l@IH LN7;Yr rL%xl,cn< String sURL; //File URL (K2 p3M^ long nStartPos; //File Snippet Start Position #!5GGe{I long nEndPos; //File Snippet End Position ."h;H^5 int nThreadID; //Thread's ID B[Tw0rQ boolean bDownOver = false; //Downing is over mMa7Eyaf boolean bStop = false; //Stop identical CjO/q)vV FileAccessI fileAccessI = null; //File Access interface #4|?;C)u\ =|jOio=s: v=/V<3 public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException |g7E*1Ie { H%/$Rqg this.sURL = sURL; ^%_LA't'R this.nStartPos = nStart; >`lf1x this.nEndPos = nEnd; L
~ nThreadID = id; kp0>8rkF fileAccessI = new FileAccessI(sName,nStartPos);//定位 O'p7^"M } +C+3DwN zL>nDnL 4 7gJ`G@y public void run() l\(t~Q { 'T.> oP0> while(nStartPos < nEndPos && !bStop) 1~_]"Y' { z~X] v["d $y`|zK|G- #_H=pNWe try{ nhy3E URL url = new URL(sURL); 6%5A&&O(b HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); @5kN
L~2 httpConnection.setRequestProperty("User-Agent","NetFox"); 9,F(f}(t String sProperty = "bytes="+nStartPos+"-"; .2u %;)S httpConnection.setRequestProperty("RANGE",sProperty); qg'm<[ Utility.log(sProperty); N($j;<Q qC]D9
A %u!#f<"[ InputStream input = httpConnection.getInputStream(); OtnYv //logResponseHead(httpConnection); ]P 2M yhTe*I=Gk uT=sDWD: byte[] b = new byte[1024]; 2Yyc`o0R;h int nRead; W<58TCd while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) NW~n+uk5v { dz7*a{ nStartPos += fileAccessI.write(b,0,nRead); ]5}
=r //if(nThreadID == 1) ZM5[
o
m // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 7IFUsli] } &\5T`|~)! =JEnK_@?K\ 6 C Utility.log("Thread " + nThreadID + " is over!"); 3L#KHTM bDownOver = true; RJGf@am& //nPos = fileAccessI.write (b,0,nRead); n RXf \*"3 } (3_2h4O catch(Exception e){e.printStackTrace ();} E]+W^VG } Ot(EDa9}IJ } o{:D ,g/ UPK8K= ku\_M //打印回应的头信息 4cs`R+]o public void logResponseHead(HttpURLConnection con) ;B
tRDKn { *X,vu2(I-= for(int i=1;;i++) fOrqY,P' { n /rQ*hr String header=con.getHeaderFieldKey(i); mWO=(}Fb\ if(header!=null) w8>p[F5`O //responseHeaders.put(header,httpConnection.getHeaderField(header)); X, J.!:4` Utility.log(header+" : "+con.getHeaderField(header)); [5:F else CjIkRa@!x break; Prr<:q } a-O9[?G/x } \ar.(J koaH31Q ZfMJU public void splitterStop() XD*$$`+# { B9+oI cO bStop = true; P 0,]Ud } 9B<y w. RJ@d_~%U DGp'Xx_8 } 7 +? A*@!tz< lK}F>6^\ /* eZf-i1lJ **FileAccess.java ^@jOS{f l *//文件访问(定位,写) Oq|pd7fcgm package NetFox; )D(XDN import java.io.*; AEEy49e KJSN)yn\ e}aD<EG public class FileAccessI implements Serializable{ QK//bV) R0{n0Br //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 Nnx"b 5I}n RandomAccessFile oSavedFile; TN` pai0 long nPos; jtl7t59R l HZf'P_Wx o#E
z_D[ public FileAccessI() throws IOException -rU *)0PR { v%B^\S3) this("",0); e8P
|eK } ~D
5'O^ _RhCVoeB u9'4q<>& public FileAccessI(String sName,long nPos) throws IOException |9}G { Z @j0J[s oSavedFile = new RandomAccessFile(sName,"rw"); :0#!= this.nPos = nPos; pH)V:BmJ oSavedFile.seek(nPos); 8`'_ckIgr } RYmk6w!w 1G$kO90 B*,9{ g0m/ public synchronized int write(byte[] b,int nStart,int nLen) /ptIxe { i7*4hYY int n = -1; ^D/*Hp _ try{ 5GC{)#4 oSavedFile.write(b,nStart,nLen); YAd.i@^ n = nLen; <A+Yo3|7 } @lBR;B" catch(IOException e) ~9 K4]5K- { 7nfQ=?XNK e.printStackTrace (); =7#)8p[ } v-&^G3 2I6 c7H s BQt!L1)) return n; TQYud'u/ } Rl<~:,D
~(G]-__B< F|Jo|02 } A*E$_N g9p#v$V \ tU91VIj /* 1+Ja4`o,iS **SiteInfoBean.java 0=7C-A1(D */ Xg#Dbf4 package NetFox; e6#^4Y/+` Ewu 7tq Z d\xh>o public class SiteInfoBean { -KbT[] Cv~ t~ Ca]vK'( private String sSiteURL; //Site's URL 9A)(K, private String sFilePath; //Saved File's Path =as ]>?< private String sFileName; //Saved File's Name rVFAwbR private int nSplitter; //Count of Splited Downloading File "5ah{,
e-\J!E'1F ,,b_x@y* public SiteInfoBean() 980[]&( {//nSplitter的缺省值为5 $UO7AHk //default value of nSplitter is 5 - C8h$P this("","","",5); v"=^?5B } lbTz q'd6\G0} "k5 C? ~ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 's!EAqCN { ]D%D:>9|/ sSiteURL= sURL; <-X)<k sFilePath = sPath; u!X[xe; sFileName = sName; ]%F3 xzOk this.nSplitter = nSpiltter; |OuZaCJG qvhTc6oH .kvuI6H } w%j 6zsTz FpCj$y~3 vQYd!DSh public String getSSiteURL() Xy=|qu { rsy'ZVLUj return sSiteURL; n"d~UV^Uw } >"N \ZC^ 4|7L26,]5 N{
;{<C9Z public void setSSiteURL(String value) =`Nnd@3v { <fWho%eOK sSiteURL = value; {Km|SG[-q } 5|wQeosXxI hjaI&?w q1`uS^3` public String getSFilePath() %\%1EZQ% { <iv9Mg} return sFilePath; $l-j(=Md } Oa
CkU J1yy6Wq3[ 1 NLawi6 public void setSFilePath(String value) 5{[3I|m{ { IcI y sFilePath = value; !W{|7Es?. } |4x&f!%m c[@>#7p`o j+PW9>Uh public String getSFileName() `:?padZG { fh:=ja?bM3 return sFileName; X
NnsMl } **dGK_^T0 mWta B>f hFs0qPVY public void setSFileName(String value) DV]Kd
7 { &%C4rAd2 sFileName = value; _nOio ? } !fyE
Hk ~)Ny8Dh OCY7Bls4 public int getNSplitter() 2gb49y~ { ZLxe$.V_ return nSplitter; 5H""_uw } C7eaioW$ 0 l
G\QT j#<#o:If public void setNSplitter(int nCount) DZ(e^vq { X}h{xl nSplitter = nCount; [&3G `8hY } f+1)Ju~ } #^%Rk'W /,$6`V ,K8PumM_ /* Bn}@wO **Utility.java RkP7}ZA; */ ^V_vpr]}P package NetFox; z2wR]G5! Op\l BY32)8SH public class Utility { ]e7D"" +SZ#s:#SE ~$YFfv>
public Utility() gXc&uR0S { xBR2tDi% v=iz*2+X O#CxS/M5 } w9H%u0V? 3Akb|r //线程睡眠 '?wv::t public static void sleep(int nSecond) 2gg5:9 { -QI1>7sl try{ ^L*:0P~ Thread.sleep(nSecond); kG@1jMPtQ } !@%m3)T8 catch(Exception e) e
J2wK3R { )TVyRY Z1 e.printStackTrace (); .#lQZo6$\| } \/S?.P#L~ } }7wQFKME c3g\*)Jz"F //日志 X;6&:%ZL@^ public static void log(String sMsg) g>T'R Vb { [[LCEw System.err.println(sMsg); xH; 4lw } MpGWt# v|CRiwx J:M^oA'N:> public static void log(int sMsg) P_lk40X { f:=q=i System.err.println(sMsg); }V6}>!Sb } &HT
PeB } |JnJ=@-y 6 @'v6 1' vAHJP$x /* |A[Le
;, **TestMethod.java Go+f0aig */ enDjP package NetFox; | t3_E "&77`R ;,'eO i public class TestMethod { $l 0^2o= haqL
DVrf lHT? public TestMethod() li$(oA2 { ///xx/weblogic60b2_win.exe zl4Iq+5~6Q try{ ]geO%m SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); =cX&H //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); oju4.1 SiteFileFetch fileFetch = new SiteFileFetch(bean); P0 hC4Sxf fileFetch.start(); GyRU/0'BME } "qMd%RP catch(Exception e){e.printStackTrace ();} Y GvtG U- }+,1G!?z )LKutN?tBy } Y{f;qbEQH' $
[0 mst-:F[h public static void main(String[] args) 2PAotD4+I { C[|jJ9VE, new TestMethod(); 6psK2d0 } }gGcYRT } "N D1$l 点击下载更多相关资料
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