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/* $k@O`xD,q **SiteFileFetch.java k$z_:X */ ?>D+ge package NetFox; G\/zkrxmv import java.io.*; Zw
26 import java.net.*; IXMop7~ b@gc{R}7 V%7WUq public class SiteFileFetch extends Thread { knu,"< =V,mtT vsCCB}7\ SiteInfoBean siteInfoBean = null; //文件信息Bean qOIyub long[] nStartPos; //开始位置 1y4|{7bb long[] nEndPos; //结束位置 }WC[$Y_@ FileSplitterFetch[] fileSplitterFetch; //子线程对象 nMq,F#`3N long nFileLength; //文件长度 KVoS
C@w boolean bFirst = true; //是否第一次取文件 !=*g@mgF boolean bStop = false; //停止标志 sQUM~HD\a File tmpFile; //文件下载的临时信息 ="1Ind@w!
DataOutputStream output; //输出到文件的输出流 MnsJEvn/ 0rQMLx //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) E<{R.r public SiteFileFetch(SiteInfoBean bean) throws IOException <.x{|p { Thp[+KP> siteInfoBean = bean; p,5i)nEFj //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Go`vfm"S tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); e8>}) if(tmpFile.exists ()) A2I9R;} { lLX4Gq1 bFirst = false; ,uSMQS-O'4 read_nPos(); oA7tEu } Gvt G(u~ else O40?{v' { lK?uXr7^ nStartPos = new long[bean.getNSplitter()]; LiC*@W nEndPos = new long[bean.getNSplitter()]; pz!Zs."f) } 2RVN\?s: 7X`g,b! 0#7>o^2 n*R])=F@c } g+8OekzB5 /QK6Rac- "(3[+W{| public void run() Q,,e+exbb5 { I13y6= d //获得文件长度 bQzZy5, //分割文件 xeg/A}yE //实例FileSplitterFetch e@L=LW> //启动FileSplitterFetch线程 @+&LYy72 //等待子线程返回 x77*c._3v try{ !{+,B5 Hc if(bFirst) t>L2 { QGMV}y nFileLength = getFileSize(); JinUV6cr if(nFileLength == -1) \0^Kram> { 70yFaW System.err.println("File Length is not known!"); fF!Yp iI" } h/QXPdV else if(nFileLength == -2) qJf?o.Pv { poc`q5i+ System.err.println("File is not access!"); _>o:R$ %} } w1FcB$ else {X!r8i { =}<IfNA for(int i=0;i<nStartPos.length;i++) 3<e=g)F { Yj<a"
Gr4[ nStartPos = (long)(i*(nFileLength/nStartPos.length)); 7m47rJyW4 } bt@<
ut\ for(int i=0;i<nEndPos.length-1;i++) vOH4# { XnH05LQ nEndPos = nStartPos[i+1]; 3p$?,0ELH } @JiLgIe` nEndPos[nEndPos.length-1] = nFileLength; 0.Q
Ujw } %HhBt5w } pN,u`[ +N]J5Ve-`t G~]Uk*M
q //启动子线程 k`cfG\;r fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; F0m-23[H for(int i=0;i<nStartPos.length;i++) Gf%~{@7=u { c^5~QGuQ fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 4V"E8rUL( siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 3#n_?- nStartPos,nEndPos,i); O"+gQXe Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); kl"hBK#D% fileSplitterFetch.start(); "-Mp_O] } m=1N>cq
' // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), w$>u b@= siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 8:q1~`?5"b // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", %6t:(z nEndPos = " + nFileLength); ./XYd"p // fileSplitterFetch[nPos.length-1].start(); Ml`:UrU e_^26^{q cQjv$$&6[ //等待子线程结束 +Z,;,5'5G //int count = 0; Hkg2P,2 //是否结束while循环 #QZe,"C9` boolean breakWhile = false; 5f rX 9v#CE! k<z)WNBf while(!bStop) :S]\0;8] { ,10= write_nPos(); wC"FDr+ Utility.sleep(500); M+oHtX$ breakWhile = true; XjB W9a ,S\CC{! S0$8@"~= for(int i=0;i<nStartPos.length;i++) y1z4ik)Sd@ { ufj,T7g^ if(!fileSplitterFetch.bDownOver) AI2~Jp { EX*HiZU> breakWhile = false; 4a&RYx break; t <~h'U } >:SHV W } PhLn8jNti if(breakWhile) Q(G#W+r break; pt?bWyKG R-
X5K- ]43/`FX //count++; L]7=?vN=8 //if(count>4) ip\sXVR // siteStop(); )w em|:H } rDtY[ =&6eM2>P cF*TotU_m System.err.println("文件下载结束!"); :S]%6gb8G } ;J'LS catch(Exception e){e.printStackTrace ();} 1> ?M>vK } n>z9K') 5; C| VCYwzB //获得文件长度 ,};&tR public long getFileSize() Y!xF;a { Fk7?xc int nFileLength = -1; "> ypIR< try{ t[HE6ea URL url = new URL(siteInfoBean.getSSiteURL()); VD AaYDi HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); "37lx;CH httpConnection.setRequestProperty("User-Agent","NetFox"); _=r6=. /*~EO{o $B+8Of int responseCode=httpConnection.getResponseCode(); Q) #B0NA;T if(responseCode>=400) SZ7:u895E { ?9vuuIE processErrorCode(responseCode); m<G,[Yc return -2; //-2 represent access is error Lpkyoh v } t
mntp wKh4|Ka N>uRf0E> String sHeader; alJ)^OSIe 2F;y;l% E#34Wh2z for(int i=1;;i++) _>?\DgjH { xh-o}8*n" //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); z9f-.72"X //Utility.log(in.readLine()); /A\8 mL8 sHeader=httpConnection.getHeaderFieldKey(i); (le9q5Qr. if(sHeader!=null) Bg=wKwc8 { =}^9 wP if(sHeader.equals("Content-Length")) AD>e?u { uo:J\ E nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); qw301]y break; 299H$$WS,Z } !vi>U|rh } b1q"!+8y else j8i[ONq^ break; >IafUy } d7^}tM } $GV7o{"& catch(IOException e){e.printStackTrace ();} 6 3iUi9P catch(Exception e){e.printStackTrace ();} MR7}s4o Y>z>11yEB0 W.jGGt\<\ Utility.log(nFileLength); o)|flI'vT D>r&}6< &A/]pi-\ return nFileLength; <\y@*fg+ } wSL}`C gU 0|q AxR- G&SB- //保存下载信息(文件指针位置)
x^qVw5{n private void write_nPos() eu|YCYj)g { y8Ir@qp5 try{ >h1}~jW+ output = new DataOutputStream(new FileOutputStream(tmpFile)); hF?1y `20 output.writeInt(nStartPos.length); 1#g2A0U, for(int i=0;i<nStartPos.length;i++) J( TkXNm { jwe *(k]z // output.writeLong(nPos); lgAoJ[ output.writeLong(fileSplitterFetch.nStartPos); g9pZ\$J& output.writeLong(fileSplitterFetch.nEndPos); h
f)?1z4 } OnziG+ak output.close(); $p8xEcQdU# } T~?Ff|qFC catch(IOException e){e.printStackTrace ();} ' {OgN}'{ catch(Exception e){e.printStackTrace ();} T"Y+m-<% } v~+(GqR=+ g'f@H-KCD tIi&;tw] //读取保存的下载信息(文件指针位置) # +>oZWVc private void read_nPos() ldcqe$7, { 68|E9^`l try{ S\EyCi+ DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); f%JIp#B int nCount = input.readInt(); ITQA0PISL nStartPos = new long[nCount]; w(Ovr`o?9t nEndPos = new long[nCount]; )}R0Y=e for(int i=0;i<nStartPos.length;i++) yN0Vr\r2 { KkyVSoD\ nStartPos = input.readLong(); }Bh8=F3O
Q nEndPos = input.readLong(); Y Uc+0 } pad*oPH, input.close(); s+Pq&<nV- } "^[ 'y7i catch(IOException e){e.printStackTrace ();} bP#:Oi0v` catch(Exception e){e.printStackTrace ();} NYUL:Tp } v"$L702d$\ 7"D",1h 2|y"!JqE1 private void processErrorCode(int nErrorCode) (Rh,, { 2"Q|+-Io System.err.println("Error Code : " + nErrorCode); /N+dQe } @7c?xQVd$ 6v!`1}
~ =?*!"&h //停止文件下载 (/YHk`v2 public void siteStop() ]m q|w { F<1fX 7c bStop = true; p>N(Typ0b for(int i=0;i<nStartPos.length;i++) *R,5h2; fileSplitterFetch.splitterStop(); `hm-.@f,9 ?<,l3pwqa A2FYBM`Q&D } }K>d+6qk5 } \K{
z //负责部分文件的抓取 iMh#TUlQEQ **FileSplitterFetch.java tjS@meT */ GA)`-*.R package NetFox; C=xa5Y P; no? 2;b\9R^>A import java.io.*; 1~FOgk1; import java.net.*; rHI{aO7 dQX6(Jj QL/(72K public class FileSplitterFetch extends Thread { jd"@t*ZV 4@gG<QJW U>SShpmZA String sURL; //File URL Vt~{Gu-Y long nStartPos; //File Snippet Start Position Pm?KI<TH~ long nEndPos; //File Snippet End Position (E3b\lST int nThreadID; //Thread's ID y<3-?}.aZ boolean bDownOver = false; //Downing is over #z%fx
boolean bStop = false; //Stop identical est9M*Fn FileAccessI fileAccessI = null; //File Access interface Kw^ 7>\
8W7J3{d I][*j public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Lb-OsKU { G4;Oi= this.sURL = sURL; {TROoX~H? this.nStartPos = nStart; *>}@7}f this.nEndPos = nEnd; E&w7GZNt nThreadID = id; nFCC St$ fileAccessI = new FileAccessI(sName,nStartPos);//定位 BOX2O.Pm } G.B2(' 2[yd> (`
/maJtX' public void run() d1T!+I { 4at?(B+ while(nStartPos < nEndPos && !bStop) DCa^
u'f { -i|}m++ Gz0]}]A IP pN@ try{ y.k~Y0 URL url = new URL(sURL); 8Fh)eha9f HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ^7*11%Q httpConnection.setRequestProperty("User-Agent","NetFox"); >Tx?%nQ String sProperty = "bytes="+nStartPos+"-"; TX/Xt7#R: httpConnection.setRequestProperty("RANGE",sProperty); ,p a {qne Utility.log(sProperty); 'Is kWgc t?gic9
q T!{w~'=F InputStream input = httpConnection.getInputStream(); .{^5X)
//logResponseHead(httpConnection); kZ:ZtE f~[7t:WD* t@;p byte[] b = new byte[1024]; wlvgg int nRead; Z{d^- while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) P+sW[: { 3?yg\ nStartPos += fileAccessI.write(b,0,nRead); @mBQ?;qlK //if(nThreadID == 1) n@i HFBb // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); T-L||yE,h } >=>2m2z= Or+U@vAnk :cECRm* Utility.log("Thread " + nThreadID + " is over!"); o|:b;\)b bDownOver = true; "sCRdx]_ //nPos = fileAccessI.write (b,0,nRead); +\A,&;!SR } Qv-_ jZ catch(Exception e){e.printStackTrace ();} rlLMT6r.8 } _VN?#J)o } 6 "sSo j B9 uoVcW yyJf%{ //打印回应的头信息 ]m<$} public void logResponseHead(HttpURLConnection con) I236RIq {
(ZizuHC for(int i=1;;i++) F>l]
9!P|m { ?l )[7LR4 String header=con.getHeaderFieldKey(i); Avc%2+ if(header!=null) \\qZl)P_ //responseHeaders.put(header,httpConnection.getHeaderField(header)); 59A}}.@?m Utility.log(header+" : "+con.getHeaderField(header)); )akoa,#%6c else LL!Dx%JZ break; 7}>E J } ki!0^t:9 } t*u:hex +6\Zj) ~!L}yw public void splitterStop() 4VSU8tK|N] { Sm|6 %3 bStop = true; VA5xp] } CCx&7f Hn"RH1Zy 9A=,E& } 4HlQ&2O%# M2Qr(K| (A#^l=su /* `^&OF uee **FileAccess.java eauF~md, *//文件访问(定位,写) 0h_|t-9j package NetFox; Yq
KCeg import java.io.*; %u'ukcL7 ?tbrbkx ZE}}W_ public class FileAccessI implements Serializable{ :I#V. &QgR*,5eo //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 Rm( "=( RandomAccessFile oSavedFile; }7Q% 6&IR long nPos; /8S>;5hvK@ T~e.PP |{ip T SH public FileAccessI() throws IOException L8B!u9% { 77Y/!~kd this("",0); V,njO{Q } 7.oM J [W&T(%(W- 4r}51 N\ public FileAccessI(String sName,long nPos) throws IOException ?@86P|19 { ;Y, y 4{H3 oSavedFile = new RandomAccessFile(sName,"rw"); ~DwpoeYX this.nPos = nPos; e^voW"?% oSavedFile.seek(nPos); <5051UEu } 2+XAX:YD ;V!D:5U @VEb{ w[H public synchronized int write(byte[] b,int nStart,int nLen) }K(TjZR { 9*M,R,y int n = -1; @yYkti;4- try{ z b3tIRH oSavedFile.write(b,nStart,nLen); =s6 opL) n = nLen; 59u}W 0 } l/5
hp. catch(IOException e) [/r(__. { `a/`,N e.printStackTrace (); ^2rN>k,? } yG{TH0tq E1
2uZ$X ih3n<gXF return n; SXh-A1t } "tK=+f`NM K&-"d/QuLg !N^@4* } m&3xJuKih ~}
~4 /;$[E /* OyIw>Wfv **SiteInfoBean.java "AqB$^S9t */ tH4B:Bgj! package NetFox; #'`{Qv0,
AbM'3Mkz HoAy_7-5 public class SiteInfoBean { 2=}FBA,2 x8|J-8A( ueNS='+m private String sSiteURL; //Site's URL yHaGkm private String sFilePath; //Saved File's Path #'}*dy/ private String sFileName; //Saved File's Name :`sUt1Fw. private int nSplitter; //Count of Splited Downloading File \;Weizq5 x+]" 6A ah9 public SiteInfoBean() (9)Q ' 'S {//nSplitter的缺省值为5 ]:n,RO6 //default value of nSplitter is 5 ['D]>Ot68 this("","","",5); <_+X 88 } BA.uw_^4 * 4
n) /$m;y[[ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) zQ PQ { #-J>NWdt sSiteURL= sURL; fP1!)po sFilePath = sPath; e3\T)x&= sFileName = sName; !,PWb3S this.nSplitter = nSpiltter; j>kqz>3 y();tsWqc i
XN1I }
\=o- wd6owr &^nGtW%a 9 public String getSSiteURL() vDvFL<`vmD { nk:)j:fr return sSiteURL; hbn([+xY } \M-OC5fQv O/LXdz0B 2an f$^[ public void setSSiteURL(String value) <VE@DBWyl~ { dRMx[7jVA sSiteURL = value; :Dp0?&_ } F'Z,]b'st3 w-jVC^C] )/P}?`I public String getSFilePath() }m8q}~>tL { uAk.@nfiEv return sFilePath; ?7A>+EY } a q-~B~c`g GvAb`c= xz]~ jL@-] public void setSFilePath(String value) a'T;x`b8U, { dr"1s-D4IQ sFilePath = value; x1a:u } /wv0i3_e
<3
uNl '%;m?t%q public String getSFileName() nt<]d\o0 { d-%hjy3N return sFileName; EM_d8o)`B } 1;iUWU1@ ,%y/kS] xD 7]C|8o public void setSFileName(String value) /{2,zW { OrW sFileName = value; u?EN }
:11
A r_d!ikOT( EX"yxZ~ public int getNSplitter() ^rz_f{c]- { L},_.$I? return nSplitter; :'ptuY } >mkFV@` jWgX_//! s#MPX3itK public void setNSplitter(int nCount) FTldR;}( { YYS0` nSplitter = nCount; O0:q;<>z } |BYRe1l6l } iRBfx C,zohlpC )B*t
:tN /* kf9X$d6 **Utility.java m[2gdJK */ ig"L\ C"T package NetFox; bK7J} 8hH &3&HY:yF g{LP7D;6 public class Utility { H*6W q R-14=|7a- d=^z`nt !R public Utility() ~Gw*r\\+ { 3XKf!P k{0o9, ipz5 H* } !~Z"9(v'C ,//S`j$S //线程睡眠 8EY:tzw public static void sleep(int nSecond) ^sZ,2,^ { vD4*&|8T# try{ 5R7DDJk Thread.sleep(nSecond); 0\$2X- c } 1x^GWtRp catch(Exception e) D'4\*4is { HT@=evV e.printStackTrace (); #E]59_
} 4K74=r),i } *ui</+ x^CS"v7 //日志 vSh`&w^* public static void log(String sMsg) ?ubro0F: { 5-M-X#( System.err.println(sMsg); '>"
4 } ^@]3R QB `mqMLo* \NC3'G:Ii public static void log(int sMsg) Mihg: { P;*(hY5& System.err.println(sMsg); :EyD+!LJ } E"0>yl) } >d6| ^h'0 mc3"`+o 4+ig'
|o /* {Ha57Wk8D **TestMethod.java M3AXe]<eC1 */ Pc9H0\+Xk package NetFox; zreU')a iQ{VY
^
0 PW4q~rc=: public class TestMethod { 0$njMnB2l #;<Y[hR{P @|r{;' public TestMethod() W9)&!&<o { ///xx/weblogic60b2_win.exe 9FX-1,Jx try{ ~s{$WL& SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); svSVG:48 //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); f!"w5qC^ SiteFileFetch fileFetch = new SiteFileFetch(bean); E_`=7i fileFetch.start(); @XVTU } E.f%H(b catch(Exception e){e.printStackTrace ();} Ep}s}Stlr} W8<%[-r %$mA03[MQ } ZB{Em B0W s @C}P =Sv/IXX\di public static void main(String[] args) <uJ@:oWG7 { |g~ZfnP_% new TestMethod(); \DzGQ{`~m } yHGADH0B } Mfs?x
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