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/* cqs.[0 z#B **SiteFileFetch.java NR8`nc1~ */ P3=#<Q. package NetFox; ZS]Z0iZv9 import java.io.*; a:HN#P)12 import java.net.*; mDbTOtD z9OpxW@Ou >!']w{G public class SiteFileFetch extends Thread { z^&$6c_ Tl[*(|/C f#GMJ mCQs SiteInfoBean siteInfoBean = null; //文件信息Bean hjFht+j1 long[] nStartPos; //开始位置 @>~\So| long[] nEndPos; //结束位置 HB}rpiB FileSplitterFetch[] fileSplitterFetch; //子线程对象 RU6c 8>" long nFileLength; //文件长度 sb8bCEm-\ boolean bFirst = true; //是否第一次取文件 7_)38 boolean bStop = false; //停止标志 MY
c& File tmpFile; //文件下载的临时信息 (F.w?f4B3 DataOutputStream output; //输出到文件的输出流 #<eD ceCO *m~ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) qS!N\p~> public SiteFileFetch(SiteInfoBean bean) throws IOException Pz:,de~5Qm { vZ srlHb siteInfoBean = bean; <? !' //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); jg{2Sxf!c tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); i(cKg&+ktd if(tmpFile.exists ()) c@}t@k { >ZG$8y 'j bFirst = false; </xf4.C read_nPos(); R@tEC)Zn } ;A7JX:*?y= else xypgG;`\ { MOCcp s* nStartPos = new long[bean.getNSplitter()]; vF'>?O? nEndPos = new long[bean.getNSplitter()]; ;sAGTq } wik<#ke C|3Xz[k{ ZxT
E(BQv BQg3+w:> } .7b%7dQ<\ `Z5dRLrd mR
XRuK public void run() x`@`y7( { $)o0{HsL+ //获得文件长度 Mz2TwU_ //分割文件 JJbd h \ //实例FileSplitterFetch g.hYhg'KUh //启动FileSplitterFetch线程 {GnZ@Q:F //等待子线程返回 M")/6 PH8 try{ ;l @lA)i if(bFirst) ivq(eKy { 6z6\xkr nFileLength = getFileSize(); pXN'vP if(nFileLength == -1) ?H@<8Ra=3 { IHd
W!q System.err.println("File Length is not known!"); K#X/j'$^ } Q/0gd? U? else if(nFileLength == -2) c};%VB { Z/?{{}H+ System.err.println("File is not access!"); FE,mUpHIR } ?jlz:Z4 else OM\1TD/- { S-gO for(int i=0;i<nStartPos.length;i++) {dpDQP +! { "zd_eC5 nStartPos = (long)(i*(nFileLength/nStartPos.length)); {en'8kS } h
ka_Fo for(int i=0;i<nEndPos.length-1;i++) a <?~1pWtc { vFntzN># nEndPos = nStartPos[i+1]; a oU" } W~D_+[P|_ nEndPos[nEndPos.length-1] = nFileLength; u|Mx} } +D]raU } 0D@ $ -/{FGbpR; {b4`\I@< //启动子线程 wDW%v@ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; *w*>\ZhOm for(int i=0;i<nStartPos.length;i++) -XCs?@8EQ { >Q=^X3to fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Q#H"Se siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),
w 0= nStartPos,nEndPos,i); JRFUNy1+e1 Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ws!~MSIy fileSplitterFetch.start(); G(#t,}S}@ } C7NSmZ // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), z_ycH%p siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 0: hv6Ge^ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", YuknZ&Q nEndPos = " + nFileLength); /R=MX>JA; // fileSplitterFetch[nPos.length-1].start(); r W[;3yMf
`DgK$ QM mi Q*enZi //等待子线程结束 =NC??e { //int count = 0; *4`5&) ` //是否结束while循环 AK&>3D boolean breakWhile = false; |w{Qwf!2 MAFdJ+n# ,7)hrA$( while(!bStop) Yn="vpM1 { d:K\W[$Bz write_nPos(); F.$z7ee@ Utility.sleep(500); }p2iF2g9` breakWhile = true; ,jis@]: wT": a!: N
C for(int i=0;i<nStartPos.length;i++) V)/J2 -w { ,/b!Xm: if(!fileSplitterFetch.bDownOver) q q&U)-` { H@xS<=:lM breakWhile = false; 3_XLx{["' break; s)qrlv5H } jmr
.gW } .UL2(0 if(breakWhile) t
sUu break; z6E =%-` A3_p*n@ s~ 8g //count++; 2Wluc37 //if(count>4) Vl5>o$G|<. // siteStop(); bGeIb-|( } 3jxC}xz) g3NUw/]# $ -1ajSVJ System.err.println("文件下载结束!"); ye$_=KARP } kpn|C 9r catch(Exception e){e.printStackTrace ();} 9Tt%~m^ } pK3A/ry< @y;VV* .@OQ$D < //获得文件长度 Pa3-0dUr public long getFileSize() !9/`PcNIpy { QNMZR int nFileLength = -1; <>\|hno} try{ `Fr ,,Q81\ URL url = new URL(siteInfoBean.getSSiteURL()); -GPBX? HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); iG6]Pr|;e httpConnection.setRequestProperty("User-Agent","NetFox"); {HEWU<5 R~oJ-}iYX IXa~,a H71 int responseCode=httpConnection.getResponseCode(); *2a" 2o if(responseCode>=400) l6HtZ( { ekyCZ8iai processErrorCode(responseCode); 3i!a\N4 K return -2; //-2 represent access is error `X@\Zv=} } d|NW&PG Pqya%j N
{
oVz], String sHeader; F:ycV~bE a4^hC[a [6mK<A,/ for(int i=1;;i++) rueaP { "{D/a7]lC //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); JL87a^ro //Utility.log(in.readLine()); J2VPOn sHeader=httpConnection.getHeaderFieldKey(i); (t@)`N{ if(sHeader!=null) wz:e\ ! { 9t\14tVwx if(sHeader.equals("Content-Length")) o-RZwufZ` { [y`Gp# nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); EZB0qZIp break; ~&)\8@2 } Opu*i } M,H8ZO:R else _r3Y$^!U break; 2v ~8fr4 } !FP ] } (v/L catch(IOException e){e.printStackTrace ();} ,Lp"Ia catch(Exception e){e.printStackTrace ();} }VJ>}i* ,g7O hTLf$_|P Utility.log(nFileLength); yg}O9!M J ct-Bq YM_ [ return nFileLength; ^aAs=KditO } {"Sv~L|J; \UK}B 5\quh2Q_ //保存下载信息(文件指针位置) Ro2V-6/ private void write_nPos() PM84Z@Y { Jl\xE`-7 try{ X2Ak output = new DataOutputStream(new FileOutputStream(tmpFile)); Fw&ImRMk output.writeInt(nStartPos.length); PdO"e for(int i=0;i<nStartPos.length;i++) qA7,txQ: { L%v@|COQ3 // output.writeLong(nPos); ]j7`3%4uK output.writeLong(fileSplitterFetch.nStartPos); qLLrR,: output.writeLong(fileSplitterFetch.nEndPos); <Y"RsW9 } F(`|-E"E; output.close(); np^&cY] } b_ZvI\H catch(IOException e){e.printStackTrace ();} a.%ps: catch(Exception e){e.printStackTrace ();}
6NV592 } s 7 nl G]aey>) ~Re4zU //读取保存的下载信息(文件指针位置) Fc`IRPW< private void read_nPos() 'Jf
LTG. { 85&7WAco"B try{ $;Fx Zkp DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Xf&YcHo int nCount = input.readInt(); X:Z3R0 nStartPos = new long[nCount]; p)B/(% nEndPos = new long[nCount]; J(#6Cld`c for(int i=0;i<nStartPos.length;i++) G;cC!x< { O"~[njwkE nStartPos = input.readLong(); n)5t! nEndPos = input.readLong(); apm%\dN } L3I$ K+c input.close(); ||X3g"2W9 } j$Ndq(<tG catch(IOException e){e.printStackTrace ();} Nut&g"u2 catch(Exception e){e.printStackTrace ();} >A{Dpsi\ } Q(w; pl
r@ Gz{%Z$A~o private void processErrorCode(int nErrorCode) kB@gy} { Lm}.+.O~d System.err.println("Error Code : " + nErrorCode); ?=Ceo#Er } -b!Z(}JK ^)]U5+g? y_L8i[ //停止文件下载 yrEh5v: public void siteStop() }@6Ze$> { QD%xmP bStop = true; 26aDPTP $< for(int i=0;i<nStartPos.length;i++) YNV,
dKB fileSplitterFetch.splitterStop(); &'^.>TJ\ )@DDs(q=i =!SV;^-q } 1]''@oh{6U } Ld.9.d] //负责部分文件的抓取 nQV0I"f]?] **FileSplitterFetch.java $#f_p-N */ 1#3|PA#> package NetFox; wyX3qH w3q'n% %R?7u'=~ import java.io.*; QErdjjgE import java.net.*; \9`E17i V.
i{IW &X:;B' public class FileSplitterFetch extends Thread { =M-=94 F&!vtlV) ]CLM'$ String sURL; //File URL DQK?y=vf long nStartPos; //File Snippet Start Position [(Z(8{3i long nEndPos; //File Snippet End Position ^=^\=9"
b int nThreadID; //Thread's ID KJyCfMH&:@ boolean bDownOver = false; //Downing is over A{\?]]/ boolean bStop = false; //Stop identical X>`03?L FileAccessI fileAccessI = null; //File Access interface B0|W QBGm)h?= (8m_ GfT public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException b}NNkM { NUVKAAgMX this.sURL = sURL; $)NS]wJ]3 this.nStartPos = nStart; ~.3v\Q this.nEndPos = nEnd; RN 4?]8 nThreadID = id; *_I`{9~' fileAccessI = new FileAccessI(sName,nStartPos);//定位 |Io:D: } U)f('zD j"6|$Ze8 #b*4v&< public void run() jC[_uG { Q(-&}cY while(nStartPos < nEndPos && !bStop) 8>WA5:]v { cdkEK &o x +pG+ xI try{
t[+bZUS$~ URL url = new URL(sURL); "9'3mmZm=? HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); N{bg-%s10i httpConnection.setRequestProperty("User-Agent","NetFox"); KE"6I String sProperty = "bytes="+nStartPos+"-"; Hre&a!U httpConnection.setRequestProperty("RANGE",sProperty); <o|fH~?X Utility.log(sProperty); c6 &k?Puy rzHBop-8 rK'Lvt@w InputStream input = httpConnection.getInputStream(); b||usv[or //logResponseHead(httpConnection); J:W+'x`@ n[e C ynM:]*~K byte[] b = new byte[1024]; \h3HaNC int nRead; RK-bsf while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) dQSO8Jf { Pa0W|q#?X nStartPos += fileAccessI.write(b,0,nRead); >ye.rRZd` //if(nThreadID == 1) TaSS) n // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); OWrQKd } k^|z.$+ ]@Y!,bw& IrZ\;!NK Utility.log("Thread " + nThreadID + " is over!"); <QvVPE}z bDownOver = true; RuYIG?J=/ //nPos = fileAccessI.write (b,0,nRead); 67&IaDts } I)1ih catch(Exception e){e.printStackTrace ();} oS$7k3s
fj } _+9i } 'z,kxra|n \5&Mg81 R98YGW_
dT //打印回应的头信息 ^@8XJ[C,_ public void logResponseHead(HttpURLConnection con) 'kj
q C { nG3SDL#(k for(int i=1;;i++) n\D/WLv M { `XE>Td>Bs String header=con.getHeaderFieldKey(i); \Y"S4<"R if(header!=null) 0cKsGDm //responseHeaders.put(header,httpConnection.getHeaderField(header)); m-4#s Utility.log(header+" : "+con.getHeaderField(header)); kOo Vqu else T8\@CV! break; mK$E&,OkA } _4)
t } :Ef!gpS}?R >;Oa|G C)FO:lLr\ public void splitterStop() @C@9Tw2Y { QyL]-zNg bStop = true; oy
jkk } j?*n@' $!. [R} r4[=pfe25 } 1lIs
jBo g IY6Ll6OK X%s5D&gr /* Z*w({k7] **FileAccess.java Zs/-/C| *//文件访问(定位,写) l=9D!64 package NetFox; tH;9"z#
~ import java.io.*; %8I^&~E1 G"&$7!6[Y eCKm4l'BZ public class FileAccessI implements Serializable{ Eh;Ia6} 7Z:3xb&> //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 9\?&u_ U" RandomAccessFile oSavedFile; EsWB |V> long nPos; @F(er :tO?+1 !]s=9(O public FileAccessI() throws IOException _YR#J%xa { eD7\ ,}O this("",0); KL?<lp" } !-T#dU 037\LPO s1]Pv/a=y public FileAccessI(String sName,long nPos) throws IOException z)KoK`\mE" { h(nE)j oSavedFile = new RandomAccessFile(sName,"rw"); s[{8:Px this.nPos = nPos; 6[XaIco=C oSavedFile.seek(nPos); {BM:c$3@j } VB |k Mz$qe b/\O;o}] public synchronized int write(byte[] b,int nStart,int nLen) An(gHi;1$ { hb~d4J=S int n = -1; =CFg~8W try{ *g}==o` oSavedFile.write(b,nStart,nLen); OO/>}? ob n = nLen; ,e$RvFB } <hy!B4 catch(IOException e) 8bMw.u=F { m8L %!6o e.printStackTrace (); \4$Nx/@Q} } ?~.9:93 n5xG4.#G anz7ae&P'K return n; `::j\3B&Y- } Us "G X_ Ap\]v2G 3@eI? (N } !^L}LtqHI as3uz 9VaSCB /* |af<2(d **SiteInfoBean.java zB y%$5~Fw */ u]B
b ^[ package NetFox; L
~Vw`C V^qBbk%l>D :/?
Op public class SiteInfoBean { J.2BBy Yy[=E\z P
>0S ZP private String sSiteURL; //Site's URL Brg0: 5H
private String sFilePath; //Saved File's Path ]lJ#|zd8o private String sFileName; //Saved File's Name >oy%qLHe~t private int nSplitter; //Count of Splited Downloading File (1{OQ0N+x A+Je?3/. ocW`sE?EED public SiteInfoBean() gDfM} 2]/ {//nSplitter的缺省值为5 ,9=P=JH //default value of nSplitter is 5 =fBr2%qK this("","","",5); ,t1s#*j\!q } 3S^Qo9S YA8/TFu<_ Tz&cm= public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) P'_ aNU { xop\W4s_ sSiteURL= sURL; `,GFiTPd sFilePath = sPath; K24y;968 sFileName = sName; Q4ii25]* this.nSplitter = nSpiltter; IP !zg|c, ,V4pFQzL t?uw^nV 3E } &U.y): H-5f!>) Rx%kAt2X public String getSSiteURL() &#q%#M: { 3kJSz-_M return sSiteURL; T^xp2cZ } H'EBe;ccM jq/{|<0 z9#jXC#OdN public void setSSiteURL(String value) f}FJR6VO { R<h0RKiM@ sSiteURL = value; OK}8BY } gJOswN;([ U8g? q|D*H9[ke public String getSFilePath() ;NJM3g0I { H~hAm return sFilePath; ^eYJ7&t } C$c.(5/O 5o(=?dXm4 p|*b] 36 public void setSFilePath(String value) @qJv { d<;XQ.Wo7 sFilePath = value; iN`L* h } ER$~kFE2yP kS7T'[d Y50$2%kM public String getSFileName() wVs |mG" { -gS/ return sFileName; ]}0+7Q } / dn]`Ge) R91u6r#
D3 E!jQ1 public void setSFileName(String value) 2gjA>ET`N { 483vFLnF sFileName = value; QaEXk5>e } KQqQ@D&n tX}Fb0y WHF:>0B public int getNSplitter() %}&9[# { Ki@8 return nSplitter; t!Av[K } V'?nS&,i 55|$Imnf ` }Hnj* public void setNSplitter(int nCount) CUw
9aH { kp;MNRc nSplitter = nCount; ;6)|'3.B9 } E3KPJ`=!*" } &q` =xF j({L6</x G6Fg<g9: /* qC|re!K **Utility.java Wj*6}N/ */ )I}G:bBa package NetFox; %I=J8$B]f {5z?5i ?D )DLK<10 public class Utility { P?uKDON S I(8.$1 _bz,G"w+: public Utility() U&a]gkr { "7
4 L n*xNMw1x"T q
B2#EsZ } [E /3&3 wb9zJAsc //线程睡眠 / q!&I public static void sleep(int nSecond) |ZKchd8Yq { t-Fl"@s try{ wLbnsqa Thread.sleep(nSecond); MdfkC6P } 3G&1. 8 catch(Exception e) \ d;Ow8%d/ { 1|89-Ii] e.printStackTrace (); = @f;s<v/ } 8YJ({ Ou_ } hv)($; `jkn*:m //日志 5f5`7uVJF public static void log(String sMsg) 5-QXvw(TH { BMW4E 5 System.err.println(sMsg); f<'C<xnf } `F@yZ4L3S Cu:-< yC5|"+
A$ public static void log(int sMsg) EKf4f^< { m}E$6E^~O System.err.println(sMsg); (
FRf.mv{ } kShniN } Kna'5L5" ;sf/tX \4[Ta,;t /* .wSAysiQ|P **TestMethod.java y()( 8L */ >seB["C package NetFox; AQ5v`xE4 .%A2 ;z>YwRV public class TestMethod { >>r:L3 <! 5dk,!Cjg Ah`dt8t public TestMethod() v(O.GhJ@ { ///xx/weblogic60b2_win.exe AngwBZ@ try{ |*5nr5c_L SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); gib]#n1!p //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); Q/9b'^UJ SiteFileFetch fileFetch = new SiteFileFetch(bean); Dhoj|lc fileFetch.start(); 4o3GS8 } *&]l catch(Exception e){e.printStackTrace ();} *@nUas2" d#Ajb O@rb4( } 'r%oOZk)z 3D0I5LF& }[`?#`sW public static void main(String[] args) .)w0C%] { pt#[.n#f new TestMethod(); ex458^N_ } 4#q JX)/ } r.;iO0[/ 点击下载更多相关资料
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