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/* - _%~b **SiteFileFetch.java p&HO~J<w */ EV|W:;Sg package NetFox; _[wG-W/9R import java.io.*; hVd_1|/X import java.net.*; 8;f5;7Mn l%2 gM7WMY #v6<9>% public class SiteFileFetch extends Thread { u1.0-Y? Y&DoA0/y r{Mn{1:O SiteInfoBean siteInfoBean = null; //文件信息Bean Qj|tD+< long[] nStartPos; //开始位置 (eHTXk*V` long[] nEndPos; //结束位置 6/"#pe^ FileSplitterFetch[] fileSplitterFetch; //子线程对象 `/B+ long nFileLength; //文件长度 z+zEH9.' boolean bFirst = true; //是否第一次取文件 J*Cf1 D5! boolean bStop = false; //停止标志 H"?Ndl: File tmpFile; //文件下载的临时信息 VG50n<m9 DataOutputStream output; //输出到文件的输出流 Q=#FvsF#z3 2j]uB0 //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) g!cW`B' public SiteFileFetch(SiteInfoBean bean) throws IOException T&Z*=ShH { `9\^.g) siteInfoBean = bean; g{K \ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); m )r, tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); j;-2)ZLm if(tmpFile.exists ()) ]U}B~Y { KUHkjA_ bFirst = false; Gj[5ew?@ read_nPos(); |nqN95'u+] } 79h'sp6; else [N"=rY4G { _({wJ$aYC nStartPos = new long[bean.getNSplitter()]; # 00?]6`z nEndPos = new long[bean.getNSplitter()]; {V8uk$ } u?'J1\z p$*P@qm ~I~lb/ }I18|=TB } J(P'!#z^ DH4IF i> s; sr(34
public void run() 15Jc PDV { >?ec"P%vS/ //获得文件长度 {L7+lz //分割文件 o/=61K8D //实例FileSplitterFetch tOo\s&j //启动FileSplitterFetch线程 ogJ';i/o //等待子线程返回 ([7XtG/? try{ \vS >jB if(bFirst) z&jASL { ~b4kV)[ q nFileLength = getFileSize(); `-?`H>+OG if(nFileLength == -1) '#Do( U' { J\J3'u System.err.println("File Length is not known!"); P=s3&NDD } 4`Jf_C else if(nFileLength == -2) J]Rh+@r. { lfr^NxO U System.err.println("File is not access!"); E;q+u[$ } >T{TE"XyO| else JE<h { Fw#1?/K~ for(int i=0;i<nStartPos.length;i++) DV)NY! { 8~BLTZ nStartPos = (long)(i*(nFileLength/nStartPos.length)); |A+,M"F? } J- 5kvQi8 for(int i=0;i<nEndPos.length-1;i++) e-VGJxR { 7=&+0@R#/d nEndPos = nStartPos[i+1]; ;*=7>"o'` } %CUwD nEndPos[nEndPos.length-1] = nFileLength; =T)y(]
;M$ } @![1W@J } DUg[L w>'3}o(nY `91Z]zGpU //启动子线程 hb9HVj fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 0vMKyT3 c for(int i=0;i<nStartPos.length;i++) vTL/% SJ8 { `_BmVms fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), BbPRPkV siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), [e{D nStartPos,nEndPos,i); JEP9!y9y Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); RPjw12Ly fileSplitterFetch.start(); EZT 8^m } Q9;VSF) // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), *Y!RU{w+Z siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); b~<:k\EE // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", f>&*%[fw nEndPos = " + nFileLength); *<}R=X. // fileSplitterFetch[nPos.length-1].start(); 46B'Ec Q:'r
p BH}M]<5 //等待子线程结束 tGSXTF}G //int count = 0; *_H]?& //是否结束while循环 ][XCpJ)8 boolean breakWhile = false; 5@pLGMHT (CAkzgTfc &[N_{O| while(!bStop) ,kl``w|1M { >\3N#S"PF write_nPos(); j9-.bGtm?. Utility.sleep(500); ;hh.w?? breakWhile = true; AOz~@i^ +4Q1s?` 7;Vmbt9 for(int i=0;i<nStartPos.length;i++) '?LqVzZI { -<e_^ if(!fileSplitterFetch.bDownOver) /"^XrVi- { +k0UVZZX? breakWhile = false; ?30pNF| break; h${=gSJc } _SH~.Mt_! } 7h>, if(breakWhile) Zlygx break; R 0G!5>1i >X5RRSo Kk|)N3AV: //count++; ;*d?Qe: //if(count>4) sLSH`Xy?5 // siteStop(); d ]#`?} } :b!&Xw$ 9%m^^OOf :'[ha$ System.err.println("文件下载结束!"); gJg+
]-h/ } M'T[L%AP catch(Exception e){e.printStackTrace ();} 5v sn'=yN } 'aS: Azb V >~\~H2Y Zv9%}%7p //获得文件长度 7ZUS public long getFileSize() ~NO7@muw { 1O1MB&5% int nFileLength = -1;
-$,'|\Y try{ Owv}lJ URL url = new URL(siteInfoBean.getSSiteURL()); WHu[A/##'] HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); JIf.d($
~: httpConnection.setRequestProperty("User-Agent","NetFox"); 8x 8nQ*_ S %wdXe j%':M int responseCode=httpConnection.getResponseCode(); x1"8K if(responseCode>=400) N(O*"1b { N Ff`V processErrorCode(responseCode); tg9{(_t/W return -2; //-2 represent access is error zQ(`pld } !wZIXpeL Pjq()\/[Z UMHFq- String sHeader; b=SCyGxlZ5 IBW-[lr7 `trcYmR=k for(int i=1;;i++) 6LqF*$+$` { Hr \vu`p$ //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); :!FGvR6 //Utility.log(in.readLine()); @ *5+ZAF sHeader=httpConnection.getHeaderFieldKey(i); v"<M
~9T) if(sHeader!=null) H8m[:K]_H { R{6M(!x if(sHeader.equals("Content-Length")) } V"A;5j` { WE+Szg(4x nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); /4upw`35]
break; c @KNyBy2 } >GmO8dK } &4*f28 s else <y#@v G break; N37CAbw0 } J6@RIia } rmdg~ catch(IOException e){e.printStackTrace ();} fVi[mH0=+ catch(Exception e){e.printStackTrace ();} MOm+t]vq1 z9v70
q vOl3utu7 Utility.log(nFileLength); +=*ND<$n/E //bQD>NBO Fw^^sB return nFileLength; b27t-p8 } Rhw+~gd*F s~c cx"HH KbH|'/w //保存下载信息(文件指针位置)
6B}V{2 private void write_nPos() G}aM~, v { X<f4X"y try{ Ty*+?#` output = new DataOutputStream(new FileOutputStream(tmpFile)); n} ]gAX output.writeInt(nStartPos.length); hb>uHUb& for(int i=0;i<nStartPos.length;i++) m]}EVa_I`/ { pezfB{x? // output.writeLong(nPos); {J/+KK output.writeLong(fileSplitterFetch.nStartPos); 7'ws: #pC output.writeLong(fileSplitterFetch.nEndPos); }}Gkipp } Vygh|UEo output.close(); Gc;-zq } /sqfw,h@ catch(IOException e){e.printStackTrace ();} f*^bV_ catch(Exception e){e.printStackTrace ();} SjcX|=S } Ix0#eoj h|<;:o?yh `6PBV+]Vm3 //读取保存的下载信息(文件指针位置) 4I.)>+8V private void read_nPos() \@zoM:[sN { \[/}Cy try{ ^}<]sjmk DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); C\0,D9 int nCount = input.readInt(); >}d6)s| nStartPos = new long[nCount]; fr8';Jm nEndPos = new long[nCount]; @[Wf!8_ for(int i=0;i<nStartPos.length;i++) cVSns\QO { GbvbGEG nStartPos = input.readLong(); hK3Twzte nEndPos = input.readLong();
8L`wib2 } zv^+8h7k input.close(); xJOp~fKG } |{rhks~ catch(IOException e){e.printStackTrace ();} 6}*4co catch(Exception e){e.printStackTrace ();} 4% 6@MQ[ } 0;w84>M ^C}f|{J \JP9lJ3< private void processErrorCode(int nErrorCode) -tp3qi { T7 (d System.err.println("Error Code : " + nErrorCode); "i!W(}x+ } C\ 34R 'yh)6mid +u
lxCm_lV //停止文件下载 %iZ~RTY6 ! public void siteStop() qr~zTBT]
E { P75@Yu( bStop = true; gmOP8.g for(int i=0;i<nStartPos.length;i++) ~x J#NC+ fileSplitterFetch.splitterStop(); CU/Id`"tW 1`Uu;mz A^4#6],%v } s1X?]A } ^xr &E //负责部分文件的抓取 m,F4N$ **FileSplitterFetch.java "DRiJ.|APs */ B.);Ju package NetFox; g$z6*bL Ze?H }xgs]\^,73 import java.io.*; dX-j3lM:# import java.net.*; FQ/z,it_i K'[kl' )W1[{? public class FileSplitterFetch extends Thread { vI(CX]o q%XjJ -s: @J6V, String sURL; //File URL C
*7x7|z long nStartPos; //File Snippet Start Position
9q2x} long nEndPos; //File Snippet End Position cxIAI=JK int nThreadID; //Thread's ID z\K-KD{Ad boolean bDownOver = false; //Downing is over K)eyFc boolean bStop = false; //Stop identical .AF\[IQ FileAccessI fileAccessI = null; //File Access interface k~JTQh*,w (
;KTV*1 On,z#A public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException CH6;jo] { 0 4a@ this.sURL = sURL; 0Q]{r ) this.nStartPos = nStart; ,X\qlT5C this.nEndPos = nEnd; T|5uywA| nThreadID = id; .RbPO#( fileAccessI = new FileAccessI(sName,nStartPos);//定位 O81'i2MJ9 } uzS;&-nA _iu^VK,} EIOP+9zP public void run() C`8.8 { k?_uv while(nStartPos < nEndPos && !bStop) k:&B
b" { ZtpbKy!\$B "}0)~,{xB !z5Ozm+} try{ -R`nitf URL url = new URL(sURL); Y{8}z
ZD HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); JRDIGS_~ httpConnection.setRequestProperty("User-Agent","NetFox"); c7R6.T String sProperty = "bytes="+nStartPos+"-"; /^`do3a} httpConnection.setRequestProperty("RANGE",sProperty); LXRIo2ynuw Utility.log(sProperty); o3le[6C/8= DyRU$U 8(H!iKHe InputStream input = httpConnection.getInputStream(); =bQ\BY# //logResponseHead(httpConnection); Bey9P)_Of :=K+~?
gbu)bqu2x byte[] b = new byte[1024]; z/pxZB~" int nRead; 0 R>!jw while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) jori,"s { +Ecn nStartPos += fileAccessI.write(b,0,nRead); qh6Q#s>tH //if(nThreadID == 1) O/oLQoH // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 161IWos } QL-E4] [`1@`5SL- ^,Ft7 JAn Utility.log("Thread " + nThreadID + " is over!"); :7s2M bDownOver = true; B06W(y,3Q> //nPos = fileAccessI.write (b,0,nRead); cfHtUv } VzWH9%w catch(Exception e){e.printStackTrace ();} '.7ER } 2UTmQOm } -LlS9[r0 1gX$U00: :79u2wSh //打印回应的头信息 ]'0}fuV public void logResponseHead(HttpURLConnection con) <Q_E3lQy/ { 48.4GwL7 for(int i=1;;i++) 1CS\1[E { N \woFrG String header=con.getHeaderFieldKey(i); I@(3~ Ab if(header!=null) *~zB { //responseHeaders.put(header,httpConnection.getHeaderField(header)); w`F'loUEt Utility.log(header+" : "+con.getHeaderField(header)); OK
\9 ` else 0
.ck!"h} break; SjvSnb_3 } dfXBgsc6i } :\%ZTBLL (b7',:_U7 i`!>zl+D public void splitterStop() xQNGlVipZ@ { p,3}A(> bStop = true; VP1z"j: } Dp?lgw ,S&p\(r. bMqFrG } +*wo iSD [*r=u[67F ?',GR aD /* !fJy7Y **FileAccess.java , Q ) *//文件访问(定位,写) x}uDW package NetFox; p uW import java.io.*; e1ExB# $NBQv6#: JHJ]BMm public class FileAccessI implements Serializable{ /lc4oXG8 <Kk?BRxi //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 @u:q#b RandomAccessFile oSavedFile; 43*;" w= long nPos; lr)9 U7 |W5lhx0U Tz7|OV_W$ public FileAccessI() throws IOException USKC,&6&} { O]t)`+%q this("",0);
N,&bBp } S>d7q )gk
tI! gj4ONmY public FileAccessI(String sName,long nPos) throws IOException }synU]^7\ { *56q4\1 oSavedFile = new RandomAccessFile(sName,"rw"); Sd\oL*lN this.nPos = nPos; 5-:H oSavedFile.seek(nPos); `~h8D9G } ov1#BeQ ob9=/ R?i Xvxrz{ public synchronized int write(byte[] b,int nStart,int nLen) [=>[ 2Ty { r>t|.=! int n = -1; ;33SUgX try{ |A2o$H oSavedFile.write(b,nStart,nLen); S~^]ib0 n = nLen; /&5:v%L } N"zl7 .E catch(IOException e) sc z8`% { .G>~xm0 e.printStackTrace (); t6~~s
iQI' } ogoEtKi J4?SC+\ xo{z4W return n; +;
=XiB5R } /$j,p E= z h%b< %:7/ym[ } .~|[*
q\ ONLhQJCb >P-'C^:V= /* )ZpMB **SiteInfoBean.java uC2qP)m,^ */ DN;$->> package NetFox; 9+~1# | =27Z Y Z PrF('PH7i public class SiteInfoBean { x#t?` ;ih;8 ~$YasFEz private String sSiteURL; //Site's URL 9-y<= ) private String sFilePath; //Saved File's Path Xet}
J@C private String sFileName; //Saved File's Name T^Hq 5Oy private int nSplitter; //Count of Splited Downloading File ?]>;Wr Ee=!bv(%70 3Q_)Xs
r` public SiteInfoBean() P,k=u$ {//nSplitter的缺省值为5 )Zrn?KM //default value of nSplitter is 5 1JZhcfG this("","","",5); _SQ]\Z } |C7=$DgwY S0;s
7X#c cK'}+ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) ;>Z0e`= { vH6.;j'^ sSiteURL= sURL; TU9$5l/;g sFilePath = sPath; N'?#g`*KW sFileName = sName; +<WNAmh
this.nSplitter = nSpiltter; Z;6?,5OSc `(~oZbErM 8>DX
:` } cq8JpSB( kM3#[#6$! Jv~^hN2 public String getSSiteURL() s_U--y.2r( { s2 $w>L return sSiteURL; LKst
QP!I } mA5sK?W !ZayN 8aW<lu public void setSSiteURL(String value) >&Vz/0 { Y7 e1%,$v sSiteURL = value; _] us1 } (_fovV= aQ0pYk~( i L'j9_w, public String getSFilePath() l^rQo_alk { D~ 7W return sFilePath; FMC]KXSd } {G{>Qa|
`dIwBfg_ @[]#[7 public void setSFilePath(String value) G1wJ]ar { 24
RD sFilePath = value; "fu@2y4^ } *4c5b'u =lx~tSiS c4}|a1R\= public String getSFileName() cPX^4d~9 { mH )i return sFileName; Lg|]|,%e } SxL/]jWR7 /$|-!e<5b\ o>HGfr,N public void setSFileName(String value) |q
Pu*vR { 2 e&M/{ sFileName = value; lDZ~ } l_zTpyOZ Cw~fP[5XMF t_ \&LMD public int getNSplitter() H"wIa8A { Rp6q) return nSplitter; =|H.r9-PK6 } }w{E<C(M x}#N?d 5X:3'* public void setNSplitter(int nCount) /b410NP5 { DDZnNSo<JQ nSplitter = nCount; l6.&<0pLT } ?3<Y/Vg%c } Ka$lNL3<j s$ ?;C [ZS.6{vr /* x::d}PP7 **Utility.java ,?wxW */ $5>m\wrl package NetFox; ~Jlq.S' Nf}i/ }Zfi/ ^0U public class Utility { L),bPfz r"dR}S.Uf *TPWLR ^ public Utility() dEam| { Q|G|5X DkW^gt 9G4os!x) } xp *d: IaO*{1re //线程睡眠 q&^H"
fF public static void sleep(int nSecond) 6Ia[`xuL { 3=%G{L16- try{ '30JJ0 Thread.sleep(nSecond); dcfwUjp[ } w4l]rH catch(Exception e) gwFW+*h { 6xu%M&ht e.printStackTrace (); OXbC\^qo@ } *?+2%zP } N:,V{Pw im
F,8 ' //日志 6rlvSdB public static void log(String sMsg) ..=lM:13| { -jVg{f! System.err.println(sMsg); :N' } M%s!qC+ ovaX_d)cU zo@,>'m public static void log(int sMsg) 97pnq1b { f4vdJ5pV System.err.println(sMsg); \\35}
9 } CjJ n } Sp]ov:]%f *p|->p6,u m<!CF3g /* #hXuGBZEI **TestMethod.java !04^E */ }&%&0$% package NetFox; |*L/
m0'L Zt
1nH m;PTO$-- public class TestMethod { IG~Zxn1o !. :b}t v+CW([zAx# public TestMethod()
PmT<S,}L { ///xx/weblogic60b2_win.exe o%K1!' try{ pE$*[IvQ' SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); 6mjD@ //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); `0-i>> SiteFileFetch fileFetch = new SiteFileFetch(bean); jRxzZt4 fileFetch.start(); jJ?G7Q5l } u3sr"w& catch(Exception e){e.printStackTrace ();} |V^f}5gd l>)+HoD %m$t'? } 2
S2;LB OOYdrv, Vc+~yh.) public static void main(String[] args) ;}k_ { T;i+az{N:V new TestMethod(); ?XVox*6K& } ~O
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