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/* Ins`l **SiteFileFetch.java *:YiimOY" */ *1
]uH e package NetFox; EXwo,?I import java.io.*; oMD>Ywc- import java.net.*; D},>mfzF 5k3n\sqZA ?(y*nD[a public class SiteFileFetch extends Thread { |`f$tj Av$^ 7 60Y$/Wz SiteInfoBean siteInfoBean = null; //文件信息Bean ?m=N]!n long[] nStartPos; //开始位置 #*uL)2nR long[] nEndPos; //结束位置 +p_CN*10H FileSplitterFetch[] fileSplitterFetch; //子线程对象 pb?c$n$u* long nFileLength; //文件长度 .b&t;4q boolean bFirst = true; //是否第一次取文件 *_{j=sd boolean bStop = false; //停止标志 yAs>{6%- File tmpFile; //文件下载的临时信息 *{@Nq=fE DataOutputStream output; //输出到文件的输出流 u\x}8pn P*Uwg&Qz) //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) *@r/5pM2} public SiteFileFetch(SiteInfoBean bean) throws IOException }bpQq6ZF { +L|?~p`V siteInfoBean = bean; M~#g RAUJ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); %@ODs6 R0 tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); mpEK (p if(tmpFile.exists ()) n Fg~< $d { !/*\}\'4 bFirst = false; r
CHl?J read_nPos(); )!Z*.? } -M~:lK]n else OU(8V^. { GR.^glG?6 nStartPos = new long[bean.getNSplitter()]; u+e{Mim nEndPos = new long[bean.getNSplitter()]; Z{Qu<vy_ } Y3cMC) hh)`645=x B6nX$T4zP '!cCMTj } TnOggpQ6X qIE9$7*X 6V:U(g public void run() HTcb_a { 2K6qY)/_ //获得文件长度 o>i4CCU+ //分割文件 A5RN5`} //实例FileSplitterFetch ]G=L=D^cK //启动FileSplitterFetch线程 W$;,CU.v //等待子线程返回
J+DDh=% try{ V`d,qn)i if(bFirst) Bz-c$me1 { S_4?K)n # nFileLength = getFileSize(); ,~$p,ALwN7 if(nFileLength == -1) ~'H]jN { n;C
:0 System.err.println("File Length is not known!"); _|\~q[ep } GPv1fearl else if(nFileLength == -2) 82qoGSD. { EHIF>@TZ System.err.println("File is not access!"); wn, KY$/ } DE8n+Rm else #PW9:_BE { #ut for(int i=0;i<nStartPos.length;i++) ]e^&aR5f" { Jk11fn;\> nStartPos = (long)(i*(nFileLength/nStartPos.length)); J T7nG.9 } G1tY) _-8[ for(int i=0;i<nEndPos.length-1;i++) rjAn@!|:+ { T#Z^s~7&I nEndPos = nStartPos[i+1]; t?&|8SId } \gGW8Q; nEndPos[nEndPos.length-1] = nFileLength; Z'W=\rl } KVaiugQ } [z\$?VJspQ 2'\H\| zOIDU //启动子线程 ^4hO fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 1~`fVg for(int i=0;i<nStartPos.length;i++) HTS0s\R$ { uc\Kg1{ fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 9c'xHO` siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), f:w?pE nStartPos,nEndPos,i); CL;}IBd a Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); OU.6bmWy| fileSplitterFetch.start(); JPUW6e07o } ,0Hr2*p // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), mh#a#< siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 4G0m\[Du // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", (Q!}9K3 nEndPos = " + nFileLength); |O+H[;TB6 // fileSplitterFetch[nPos.length-1].start(); On.{!:"I/ rJTa 2tEkj=fA- //等待子线程结束 fu ,}1Mq# //int count = 0; 1{.|+S Z! //是否结束while循环 `?@}>. boolean breakWhile = false; u@M,qo` ]Sz:|%JP1 MYvY]Jx3 while(!bStop) n\'4 { yYYSeH write_nPos(); EGS)b Utility.sleep(500); (gU!=F?#m breakWhile = true; T/~f~Z z Bahm]2 |F[+k e for(int i=0;i<nStartPos.length;i++) KqJs?Won { 50wulGJud if(!fileSplitterFetch.bDownOver) 9>/4W. { #x60xz breakWhile = false; {duz\k2 break; 3M7/?TMw{6 } H@>` F } i$#;Kpb`^ if(breakWhile) 5H9z4-i x? break;
gPO}d KYI/ TDjm2R~9FS //count++; "m8^zg hL //if(count>4) P4'Q/Sj // siteStop(); I6av6t} } p)-^;=<B3 q3N
jky1w o#Dk&
cH System.err.println("文件下载结束!"); ()?(I?II } `UaD6Mc<Mz catch(Exception e){e.printStackTrace ();} + GN(Ug'R } `HSKQ52 _ <V)-Y I;(L%TT ` //获得文件长度 1n8/r}q'H public long getFileSize() [l??A3G { H$t_Xw== int nFileLength = -1; ?e4YGOe. try{ -@2iaQ(5a2 URL url = new URL(siteInfoBean.getSSiteURL());
ltSU fI HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); k]|~>9eY] httpConnection.setRequestProperty("User-Agent","NetFox"); $8h%a
8I o5PO=AN 9Q.Yl&A int responseCode=httpConnection.getResponseCode(); vn8aFA if(responseCode>=400) my1@41
H { l|[N42+ processErrorCode(responseCode); *:7rdzn return -2; //-2 represent access is error O8r|8]o } f'RX6$}\1X `/+>a8 };zFJ6I8 String sHeader; _;y9$"A Gb6 'n$g d7y[0<xM for(int i=1;;i++) Bkc4TO { >Cp0.A:UC# //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); uH^-R_tQ //Utility.log(in.readLine());
8dA~\a sHeader=httpConnection.getHeaderFieldKey(i); v{4$D~I if(sHeader!=null) K5h { t=iIY`Md% if(sHeader.equals("Content-Length")) H%tdhu\e { (%6P0* nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); g$-PR37( break; 9.-S(ZO } C{rcs' } ~ .g@hS8> else zC!t;*8a break; $h"\N$iSq
} 9cF[seE"0 } ]%H`_8<gc catch(IOException e){e.printStackTrace ();} >tr}|> catch(Exception e){e.printStackTrace ();} cuITY^6 q<|AZ2Ai tcI*a> Utility.log(nFileLength); (?c"$|^J FVKTbvYn dZ@63a>>@ return nFileLength;
UI0VtR] } +O{*M9B Zu[su>\ 6nvz8f3*r] //保存下载信息(文件指针位置) b8UO,fY q private void write_nPos() wn%A4-%{ { p6V0`5@t try{ g3y~bf output = new DataOutputStream(new FileOutputStream(tmpFile)); "KpGlY?^ output.writeInt(nStartPos.length); H7n>Vx:L- for(int i=0;i<nStartPos.length;i++) 0{D'n@veP { C1)!f j= // output.writeLong(nPos); J
ZS:MFA output.writeLong(fileSplitterFetch.nStartPos); r#a=@ output.writeLong(fileSplitterFetch.nEndPos); oG\Vxg* } SqpaFWr output.close();
=:pJ } 8nV+e~-w catch(IOException e){e.printStackTrace ();} bY:x8fl catch(Exception e){e.printStackTrace ();} XRi8Gpg } Q197mN+0 73;GW4, CD~.z7,LC //读取保存的下载信息(文件指针位置) Xx:"4l.w. private void read_nPos() L="}ErmK { $U~]=.n try{ )Aqtew+A& DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); h2R::/2. int nCount = input.readInt(); 7{*>agQh nStartPos = new long[nCount]; gM:".Ee nEndPos = new long[nCount]; q 2E_A for(int i=0;i<nStartPos.length;i++) f
;n3&e0eC { Fx.=#bVX7 nStartPos = input.readLong(); #_p\Ie*rd nEndPos = input.readLong(); sO@Tf\d } UaeXY+O input.close(); :vbW } O\r0bUPE catch(IOException e){e.printStackTrace ();} ~9@UjQ^)F catch(Exception e){e.printStackTrace ();} kxv1Hn"`{E } .ioEIs g hwv/AnX~O \4fQMG private void processErrorCode(int nErrorCode) rey!{3U { j#ab_3xH System.err.println("Error Code : " + nErrorCode); ^1];S^nD } G 3ptx!
D @j/a=4o[ <LiPEo.R //停止文件下载 +M/%+l public void siteStop() f@!.mDm] { i/Zd8+.n$ bStop = true;
P*j|.63 for(int i=0;i<nStartPos.length;i++) 3Y$GsN4ln fileSplitterFetch.splitterStop(); #H~64/ FYQS)s ;2QP7PrSY } T>W,'H } ]Y&VT7+Z //负责部分文件的抓取 +ZP7{% **FileSplitterFetch.java i83OOV$1J */ f/?P514h package NetFox; (tW`=]z-< BI@[\aRLQ S_H+WfIHV' import java.io.*; dR]m8mdqc1 import java.net.*; pQB."[n y6BAH V0mn4sfs public class FileSplitterFetch extends Thread { Ny/MJ#Lq *vMn$,^0h9 )^hbsMhO String sURL; //File URL ?S=mybp long nStartPos; //File Snippet Start Position (TM,V!G+U~ long nEndPos; //File Snippet End Position C0Z=~Q% int nThreadID; //Thread's ID >vsqG=x boolean bDownOver = false; //Downing is over _+MJ%'>S boolean bStop = false; //Stop identical
]ZS
OM\} FileAccessI fileAccessI = null; //File Access interface mt.))#1 Y'X%Aw;` HGg@ _9tW public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException >H,*H;6 { BiBOr}ZQ this.sURL = sURL; 9Mcae31 this.nStartPos = nStart; _yR^*}xJb this.nEndPos = nEnd; K3uRs{l| nThreadID = id; u*9V&>o fileAccessI = new FileAccessI(sName,nStartPos);//定位 a 1*p*dM# } ,a?
oaPH veECfR; 47/iF97 public void run() tZo} ;|~' { u ^RxD^=L while(nStartPos < nEndPos && !bStop) LDa1X2N { GC'O[q+ j'K/22 Ax}JLPz5' try{ _@/8gPT*i URL url = new URL(sURL); ^LLzZnkcZ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); k9F=8q httpConnection.setRequestProperty("User-Agent","NetFox"); wy2
D;; String sProperty = "bytes="+nStartPos+"-"; Eh4=ZEX httpConnection.setRequestProperty("RANGE",sProperty); ?aMOZn? Utility.log(sProperty); d/@,@8: <OPArht <#HYqR', InputStream input = httpConnection.getInputStream(); hE-M$LmN@ //logResponseHead(httpConnection); /qw.p# PPsE${! \l3h0R byte[] b = new byte[1024]; =Fl^`*n int nRead; T51
`oZ` while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) >
Nr#O { Rf1x`wml nStartPos += fileAccessI.write(b,0,nRead); akQ7K //if(nThreadID == 1) Oow2>F%_# // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); BDVtSs<7 } 8dhUBJ0_ v &+R^iLE i}?>g -( Utility.log("Thread " + nThreadID + " is over!"); QmIBaMI# bDownOver = true; Z?z.?ar //nPos = fileAccessI.write (b,0,nRead); U/BR*Zn]* } Tm?# M&' catch(Exception e){e.printStackTrace ();} {(}By/_ } Y <qm{e } 9_s`{(0? ?bu>r=oIO] F6dP,( //打印回应的头信息 rVsJ`+L public void logResponseHead(HttpURLConnection con) E4xa[iZ { LreP4dRe for(int i=1;;i++) Na Cy@ { <0?W{3NqI String header=con.getHeaderFieldKey(i); DlNX 3 if(header!=null) igAtRX%Qx //responseHeaders.put(header,httpConnection.getHeaderField(header)); ;*&-C9b Utility.log(header+" : "+con.getHeaderField(header)); Wv/=O} else ete.!*= break; RpYERAgT } cCc(fF*^ } )\^-2[; $,'*f?d \uMLY<]P public void splitterStop() *uvQ\. { )sp+8 bStop = true; FC"8#*x } :eLVC7' wec)Ctj+ lb1Xsgm{ } 5*D/%]YsD 2GStN74X r ~y[7K{{ ;T /* 01o4Th m **FileAccess.java >-{Hyx *//文件访问(定位,写) <rS F* package NetFox; ws^ np import java.io.*; 7J&4akT{9 SK.: Q5: \5cpFj5% public class FileAccessI implements Serializable{ n{SJ_S#a.a A.w:h;7 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 5E_YEBO/ RandomAccessFile oSavedFile; 2dgd~
long nPos; 4nz 35BLr C2)2) k-""_WJ~^ public FileAccessI() throws IOException C"]^Q)aJN { sUm' this("",0); 7T'B6`-Ox } r!{Up7uL FU<Jp3<% 7vj2
`+r. public FileAccessI(String sName,long nPos) throws IOException dGTsc/$ { :p6M= oSavedFile = new RandomAccessFile(sName,"rw"); gKCX|cULY this.nPos = nPos; FNId; oSavedFile.seek(nPos); K 'I#W
lg } pFz`}?c0 8sK9G`
k e<q?e}>? public synchronized int write(byte[] b,int nStart,int nLen) eKqk= ( { EAby?51+ int n = -1; F1Bq$*'N$w try{ y L~W.H oSavedFile.write(b,nStart,nLen); -1@<=jX3_ n = nLen; $
o#V# } b\+`e b8_ catch(IOException e) [;sRV< { HiJE}V;Vq e.printStackTrace (); $7A8/# } B^jc3 VsR J!7MZLb |IUWF%~^$+ return n; U|j`e5) } "8zDbdK
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;mKb] /* &XUiKnNW **SiteInfoBean.java Yp2e Bgo" */ >~+ELVB& package NetFox; L\z~uo3: K)k<Rh[< VTHH&$ZNq public class SiteInfoBean { s=/v';5J2! 57'4ljvYi 2jCf T>`3 private String sSiteURL; //Site's URL DkAAV9* private String sFilePath; //Saved File's Path yyy|Pw4:Z private String sFileName; //Saved File's Name I[X772K private int nSplitter; //Count of Splited Downloading File &~U ] ~;@ N_q|\S>t/ %3''}Y5
public SiteInfoBean() P J[`| {//nSplitter的缺省值为5 'a.qu9PJ //default value of nSplitter is 5 2Q:+_v this("","","",5); c_!cv":s } l0i^uMS delu1r D*|Bb? public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) ! #2{hQRu { ayF\nk4b sSiteURL= sURL; t}/( b/VD sFilePath = sPath; x`)&J
B sFileName = sName; =kG@a(- this.nSplitter = nSpiltter; Q>1[JW{$} KL Xq\{X [0D.K}7| } CF5`-wj/# @cB$iP=Z4 ~z;FP$U public String getSSiteURL() O463I.XAP { -v|qZ' return sSiteURL; zjoq6 } e6RPIg C8i^P}y G+\GaY[ public void setSSiteURL(String value) 0'?L#K { UN<]N76! sSiteURL = value; Gjo` } u!qP h>OfOx/{q9 85xR2 <: public String getSFilePath() f^XOUh { {%6`!WW[ return sFilePath; Ck7uJI<x } pBA7,z"`mP ~Vjl7G\7i q.`NtsW!\+ public void setSFilePath(String value) k7A-J\ { h2;F sFilePath = value; Bh]P{H% } '$zIbQ: RQu(Wu|m. $[=%R`~w public String getSFileName() ,]c
1A$Sr0 { 3
xp)a%=7 return sFileName; pr UM-u8 }
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x>`%DwoRI (mt k 4 public void setSFileName(String value) _MX>#!l { .];=Pu^ sFileName = value; (n9gkO&8" }
`~CQU HJYScwjQ;` 161xAig public int getNSplitter() >]5P
3\AQV { W#WV fr return nSplitter; Sa;qW3dt3E } tS8u ?o#%Xs ?zHPJLv|Y public void setNSplitter(int nCount) L<{i,'M { ThbGQ"/ nSplitter = nCount; zi*R`;_`, } naznayy } .$) 2Ny"O.0h 7,9=uk>0\ /* M, mvys$ **Utility.java L"Olwwmk */ 8k1Dj1@0z package NetFox; mk+B9?;cF- mZ"4&U `t'W2X public class Utility { {
W{]L: 0$fpIz hJ~Uf5Q public Utility() e|WJQd4+S { ;&-k#PE]/H ;
_1
at rK]Cr9W M } =CVB BuVy }"!I[Ek> y //线程睡眠 q\p:X"j| public static void sleep(int nSecond) tQYM&6g { +@k+2?]
FO try{ eu|;eP-+d Thread.sleep(nSecond); 6wECo } !.(P~j][ catch(Exception e) T&o(N3lW { G.d TvLv e.printStackTrace (); /?F/9hL } (tw)nF } &/]Fc{]^$f {vyv7L //日志 )6,=f.% public static void log(String sMsg) '|p$)yx2 { HqD^B[jS System.err.println(sMsg); Pax|x15 } MC:@U~}6 rJbf_]^ =\wxsL public static void log(int sMsg) >!bJslWA { FOy|F-j System.err.println(sMsg); 8=uu8-l8g } x$Oq0d{T } n!xt5=xP{ /Uy"M:|V1 9}F*P669f /* e:n<EnT **TestMethod.java T@&K-UQ */ Rww{:R package NetFox; w\i\Wp,FP (w/T-* Xe:jAkDp public class TestMethod { 8sTp`}54J 9V@V6TvW>& G5aieD.# public TestMethod() Ne{?:h.! { ///xx/weblogic60b2_win.exe '2nhv,|.U try{ *XbEiMJ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); ]<rkxgMW> //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); }Nm#q@o$P SiteFileFetch fileFetch = new SiteFileFetch(bean); jiS_G%G fileFetch.start(); fc-iAj } ]J$eDbaEjT catch(Exception e){e.printStackTrace ();} >\=3:gb: "wnzo, nR}sNl1 } 5l 2 ? IIF]/Ek] se>8 Z4 public static void main(String[] args) Cdu4U}^H { Za3]d+qm new TestMethod(); Zrk4*/
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