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/* bI]UO) **SiteFileFetch.java 2r}uE\GN */ )xvx6?Ah| package NetFox; R^yZG{?t import java.io.*; _d[2_b1 import java.net.*; LlA`QLe rw8J:?0x nN=:#4
>Y public class SiteFileFetch extends Thread { pO/SV6N vbA7I<; x1:Pj SiteInfoBean siteInfoBean = null; //文件信息Bean 52MCU l long[] nStartPos; //开始位置 r($_>TS&" long[] nEndPos; //结束位置 foz5D9sQ FileSplitterFetch[] fileSplitterFetch; //子线程对象 kyx SIQ^ long nFileLength; //文件长度 9VUm=Z#` boolean bFirst = true; //是否第一次取文件 n`m_S boolean bStop = false; //停止标志 L_U3*#Zdz7 File tmpFile; //文件下载的临时信息 c7g.|R DataOutputStream output; //输出到文件的输出流 827)n[#%| =EcIXDzC> //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) p_5>?[TW: public SiteFileFetch(SiteInfoBean bean) throws IOException #OD@q; { !
[|vx!p siteInfoBean = bean; cCh0?g7nV //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); J[<pZ
[ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); WE 5"A|
= if(tmpFile.exists ()) "6E1W,|{ { loeLj4"" bFirst = false; _)#=>$k\ read_nPos(); O,=Q1*c,& } =tS[&6/ else TDl!qp @ { !#c[~erNZ nStartPos = new long[bean.getNSplitter()]; lbKv nEndPos = new long[bean.getNSplitter()]; V5yxQb } vfJ3idvo*w oDW<e'Jm I(^jOgYU d4p{5F7]^ } ^A11h6I u+z .J4w Ufaqhh public void run()
1o|0x\ q { ''(fH$pY //获得文件长度 v?YdLR //分割文件 e7XsyL'|p //实例FileSplitterFetch eg$5z
Z //启动FileSplitterFetch线程 {{.sEi* //等待子线程返回 Y( 1L>4 try{ V#gF*]q if(bFirst) 6bbZ<E5At { ,5eH2W nFileLength = getFileSize(); ;&+[W(7Sy if(nFileLength == -1) Sv~YFS :oy { @ate49W System.err.println("File Length is not known!"); *R_'$+ } >9o,S3 else if(nFileLength == -2) z"6ZDC6 { (#j2P0B System.err.println("File is not access!"); W(uP`M%][0 } QJM-`( else r/CEYEJ&X { ><;l:RGK| for(int i=0;i<nStartPos.length;i++) GOYn\N;V2 { )Lc<;=w'9 nStartPos = (long)(i*(nFileLength/nStartPos.length)); 85r)>aCMn } <qbZG}u for(int i=0;i<nEndPos.length-1;i++) M^j<J0(O { F!OOrW]p0 nEndPos = nStartPos[i+1]; h1^9tz{ } ,+ns
{ppn nEndPos[nEndPos.length-1] = nFileLength; ;[{:'^n } z:Xj_ `p } N,j>;x3xT !lQ#sL` Z?~gQ
$ //启动子线程 [{S;%Jj*X/ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ?%cn'=>ZI for(int i=0;i<nStartPos.length;i++) -yX.Jv { CRZi;7`*1 fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), -`zG_]=- siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 0Jm]f/iZ nStartPos,nEndPos,i); Tjnt(5 g Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); c;c:Ea5 fileSplitterFetch.start(); )u39}dpeu } +(;8@"u // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), jd ["eI siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); o"'iXUJ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", abM84EU nEndPos = " + nFileLength); 5Y(r\Dd // fileSplitterFetch[nPos.length-1].start(); 'RDWU7c9] y#b;uDY xGKfej9 //等待子线程结束 b%Wd<N2 //int count = 0; jZXVsd //是否结束while循环 -M"IVyy@ boolean breakWhile = false; t{_!Z(Rt5) "DVt3E g~~m'^ while(!bStop) N=>- Q) { Dz[566UD write_nPos(); yB-.sGu Utility.sleep(500);
n=f`AmF; breakWhile = true; >$2E1HW. |'ZN!2u _ymJ~MK for(int i=0;i<nStartPos.length;i++) IYuyj(/! { &g*klt'B if(!fileSplitterFetch.bDownOver) |.1qy,|!X { 98BYtxa breakWhile = false; V3##
B}2[Y break; .W!tveX8- } E;9Z\?P } >HE,' if(breakWhile) 4Z*|Dsw break; riID,aut @Ppo &> N g58/}zO //count++; y&7YJx //if(count>4) |kId8WtA // siteStop(); q#;BhPc } m'd^?Qc 1+R:3(AC GA.BI"l System.err.println("文件下载结束!"); SV&kWbS } /Z:N8e catch(Exception e){e.printStackTrace ();} >Cvjs } \0D$Mie 1XG$ z@NN /v5qyR7an //获得文件长度 GOGt?iw*< public long getFileSize() >&BrCu[u { !~kEtC int nFileLength = -1; ?RDO] I> try{ _Aa[?2 O URL url = new URL(siteInfoBean.getSSiteURL()); mn.`qfMh HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 3a'q`.L httpConnection.setRequestProperty("User-Agent","NetFox"); a~WqUL G OpjRA@ sN-oEqS int responseCode=httpConnection.getResponseCode(); ]5N zK=2{ if(responseCode>=400) Z
#EvRC { T0r<O_ubOA processErrorCode(responseCode); ; VBpp< return -2; //-2 represent access is error m`'=)x| } VO9XkA7 V7P6zAJy =:4?>2) String sHeader; ;J'OakeVO c)03Ms4
D z4g+2f7h-X for(int i=1;;i++) eO'xkm { Ee8-- //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); }S,-uggz //Utility.log(in.readLine()); #'C/Gya sHeader=httpConnection.getHeaderFieldKey(i); c -w0 if(sHeader!=null) 2\5cjdy { n? ]f@O R if(sHeader.equals("Content-Length")) !Vb,zQ { 3EmcYC nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); D{R/#vM jk break; @m?{80;uQ } A';n6ne%i } ' X}7]y else @LcT-3 u break; i *B:El1 } WKxm9y
V } `
VwN!B: catch(IOException e){e.printStackTrace ();} q@%h^9. catch(Exception e){e.printStackTrace ();} QhCY}Q?X _-/x;C M\dO({o Utility.log(nFileLength); Q&gPa]z]} @HvScg*Y QNb>rLj52 return nFileLength; dhW<p5 } !_dR' \dTQQ Ra0=q4vdk //保存下载信息(文件指针位置) @89I#t6A. private void write_nPos() !y%+GwoW { jXWNHIl)@ try{ pisB,wP$2 output = new DataOutputStream(new FileOutputStream(tmpFile)); 7 W{~f?Sh output.writeInt(nStartPos.length); 9^!wUwB for(int i=0;i<nStartPos.length;i++) x<s|vgl| { n8$=f'Hgb // output.writeLong(nPos); n$YE !D' output.writeLong(fileSplitterFetch.nStartPos); 2m\m/O output.writeLong(fileSplitterFetch.nEndPos); F@1d%c } "<x&pQZ% output.close(); U. (Tl>K|0 } $3 4j6;oN catch(IOException e){e.printStackTrace ();} UWw}!1 catch(Exception e){e.printStackTrace ();} HlPG3LD! } yb?{LL-uy ]\BUoQ7I/ a.DX%C/5 //读取保存的下载信息(文件指针位置) 69/?7r private void read_nPos() (zC
{ H_Os4} try{ {i>Jfl]G} DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); $/paEn" int nCount = input.readInt(); xs%LRF#u nStartPos = new long[nCount]; U` hfvTi nEndPos = new long[nCount]; 8R}K?+] for(int i=0;i<nStartPos.length;i++) @!<d0_dnC { bDWeU} nStartPos = input.readLong(); f05=Mc&) nEndPos = input.readLong(); x'qWM/ } ?'wsIH]m input.close(); Vho0eV= } 30_ckMG"g catch(IOException e){e.printStackTrace ();} |sf*hlrJ catch(Exception e){e.printStackTrace ();} |l7%l&! } 4P%m>[ 8*s7m %iJ|H(P private void processErrorCode(int nErrorCode) *,lh:
{ ax_YKJ5#P System.err.println("Error Code : " + nErrorCode); \QT9HAdd@ } 8;#AO8+U7) 6IP$n($2 !5UfWk\G //停止文件下载 }lP 5GT2 public void siteStop() /C$
xH@bb { `?9T~, bStop = true; ZPyM>XK$4 for(int i=0;i<nStartPos.length;i++) =VSkl;(O fileSplitterFetch.splitterStop(); O R
#7" V7C1FV2 :6lwO%=F } yU7I;]YP } sx5r(0Z //负责部分文件的抓取 6*l^1;U **FileSplitterFetch.java %xlqF< */ kVI#(uO package NetFox; E$a ?LFa6 (3[z%@I Tj~IaU import java.io.*; S1 _6C:^k import java.net.*; Nf3.\eR Bb&^{7 #QvMVy public class FileSplitterFetch extends Thread { ,U *)2`[ 4>^K:/y ?Y:x[pOe String sURL; //File URL ;)Kh;;e long nStartPos; //File Snippet Start Position &`Y!;@K9W# long nEndPos; //File Snippet End Position xX0-]Y h: int nThreadID; //Thread's ID Cp^@zw*/ boolean bDownOver = false; //Downing is over <)g8yA boolean bStop = false; //Stop identical <J(sR FileAccessI fileAccessI = null; //File Access interface h0?2j)X_
jNwjK0? /$n ~lf public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException c[}(OH { C
]Si|D this.sURL = sURL; .%'(9E this.nStartPos = nStart; ES <1tG this.nEndPos = nEnd; GN#<yv$av nThreadID = id; "I;C;}! fileAccessI = new FileAccessI(sName,nStartPos);//定位 o01kYBD } 9/ SXs0 ej&<GM| sDgXU@ public void run() IYWjHE+)d { *BD=O@ while(nStartPos < nEndPos && !bStop) 1\RGM<q$f { M:Er_,E n}A\2bO . .QB~ try{ sUl6hX4 URL url = new URL(sURL);
s6
( z HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ?#0snlah| httpConnection.setRequestProperty("User-Agent","NetFox"); DPrBFmHF String sProperty = "bytes="+nStartPos+"-"; N_4eM,7t httpConnection.setRequestProperty("RANGE",sProperty); 6,1b=2G Utility.log(sProperty); *KK+X07 rI5Foh6 _!xD8Di# InputStream input = httpConnection.getInputStream();
gB\T[RV //logResponseHead(httpConnection); 2)?(R;$, EG'[`<*h -]Cc byte[] b = new byte[1024]; gw+9x<e int nRead; e73^#O&Xt while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) d{et8N { nmlPX7!{$ nStartPos += fileAccessI.write(b,0,nRead); E{=2\Wkcp //if(nThreadID == 1) _2fkb=2@ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); _ 7oV< } k<w(i
k1bi 8 9{HJ9} =U
OLT>! Utility.log("Thread " + nThreadID + " is over!"); @vgG1w bDownOver = true; uBg 8h{> //nPos = fileAccessI.write (b,0,nRead); /)N@M } ^/wfXm catch(Exception e){e.printStackTrace ();} s)voII& } aI
zv } c_{z(W" pDPxl?S d lH$yub //打印回应的头信息 iK;dU2h public void logResponseHead(HttpURLConnection con) +&tgJ07A { Q8p&Ki;i for(int i=1;;i++) U]qav,^[ { PYB+FcR6?n String header=con.getHeaderFieldKey(i); Uts"aQ if(header!=null) "wH) mQnd //responseHeaders.put(header,httpConnection.getHeaderField(header)); R7oj# Utility.log(header+" : "+con.getHeaderField(header)); %v5R#14[n else jD){I break; e"-X U@`k1 } ?wMHS4 } K*K1(_x= 5_K5?N F}Mhs17!| public void splitterStop() N;F)jO
xsl { 'f8(#n=6qP bStop = true; -0o[f53}p } y;"
n9 7>o.0 9D@$i<D: } PDx)S7+w[ fLN! EDq VeiElU3 /* &zL#hBE **FileAccess.java Zr$d20M2A; *//文件访问(定位,写) '/0#lF package NetFox; W:&R~R import java.io.*; k!jNOqbb ~CRSL1? z^*
'@ public class FileAccessI implements Serializable{ FHy76^h>e pvWau1ArNq //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 |YJCWFbs8 RandomAccessFile oSavedFile; ;SwC&.I long nPos; >Dm8m[76 ?9j{V7h
&'|B =7 public FileAccessI() throws IOException 78#!Q.## { ;'T{li2 this("",0); v|Jlf$> } hSqY$P &Y|Xd4: x!S;SU public FileAccessI(String sName,long nPos) throws IOException Ftb%{[0}u3 { O/AE}] oSavedFile = new RandomAccessFile(sName,"rw"); Df07y<>7Q this.nPos = nPos; 1N`vCt]w oSavedFile.seek(nPos); @`u?bnx]e } KHiFJ_3 \jW)Xy `T*U]/zQ public synchronized int write(byte[] b,int nStart,int nLen) 9G?ldp8 {
V+MK'<#B int n = -1; t
*6loS0+ try{ S^RUw oSavedFile.write(b,nStart,nLen); A Ayv n = nLen; <T,A&`/ } `ue[q!Qq catch(IOException e) ~d>%,?zz { _fTwmnA e.printStackTrace (); ";3*?/uM } '3tw<k!1{. H!r &aP ;uI~BV*3 return n; $Ptk|qFe } W+>wu%[L BW[5o3
i ,#u\l>&$ } i`U:gw cH`^D?#se sOFa!bdPW /* JXQPT **SiteInfoBean.java }amU[U, */ -mNQ;zI1 package NetFox; dZ2%S''\ 7 &)])
{Q >O{7/)gS^ public class SiteInfoBean { {5:Zl<0 I %_MV =6 %|?5G private String sSiteURL; //Site's URL AMlV%U# private String sFilePath; //Saved File's Path 1IH[g*f private String sFileName; //Saved File's Name uF(k[[qaiN private int nSplitter; //Count of Splited Downloading File /9ZcM]X B B:oF;~d/, 7|YrdK< public SiteInfoBean() r((Tavn {//nSplitter的缺省值为5 _j#SpL'P //default value of nSplitter is 5 wvc>0?t' this("","","",5); '8Wv.X0` } _."E%|5 *$,+`+ i s"vekC public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) "ORzWnE4U { QEJGnl676 sSiteURL= sURL; Rq)BssdF sFilePath = sPath; R"xp%:li sFileName = sName; H3FW52pjX this.nSplitter = nSpiltter; Z[#IfbYt Ueyw;Y :iCM=k } &~~s6
-e>|kPfv! Agy
<j
public String getSSiteURL() +cg
{[f,J; { aO1IVESr$ return sSiteURL; sOC&Q&eg } x'`"iZO.t 4,1oU|fz NrJzVGeS public void setSSiteURL(String value) iyM^[/-R6 { hw,^G5m sSiteURL = value; }C6@c1myq- } YB!!/ SX4 (!zM\sF Z!\@%`0$ public String getSFilePath() (aKZ5>>cN { `F1dyf!p< return sFilePath; oh\,OW } -CBD|fo[h !oMt_k X uEd,rEB> public void setSFilePath(String value) MV936 { b~Z=:'m8 sFilePath = value; D s-` } y4F^|kS) [ gg]~2f aWvd`qA9r public String getSFileName() moO_-@i { kL7^$ return sFileName; ?SX_gYe9 } 1r4,XSk *BOBH;s ~mH+DV3
public void setSFileName(String value) Jp]T9W\ { 1D1b"o sFileName = value; $L{7%]7QC } ^
}#f() j[DIz@^ a-PGW2G public int getNSplitter() h([0,:\ { ]h@{6N'oNS return nSplitter;
KOSyh<& } 0|C[-ppr 7%CIt?Z% `"Dy%&U public void setNSplitter(int nCount) Ak=UtDN[ {
5-'vB nSplitter = nCount; L>nO:`>h } #v8Cy|I } 79tJV yiT{+;g^ |R~;&x: /* ryEvmWYu **Utility.java t<lyg0f */ ,OB&nN t> package NetFox; Nmf#`+7gCI <nA3Sd"QfV AQ}l% public class Utility { 3wNN<R \{>eOD_ f[@#7,2~M public Utility() :&$Xe1)i] { "jGe^+9uT ? ).(fP MZ^Ch } Mf7E72{D >sV Bj(f //线程睡眠 ngqUH public static void sleep(int nSecond) liG~y| { LW?2}`+ try{ /nM*ljfB\ Thread.sleep(nSecond); UCF[oO>v } rqC1 catch(Exception e)
lt%-m@#/ { yS"0/Rm} e.printStackTrace (); '%O\E{h } &
=sa yP } m){&:Hs }rxFS
<j //日志 M=Is9)y public static void log(String sMsg) ddMM74 { p;ZDpR System.err.println(sMsg); f[M"EMy } 2$Y3[$ %0(>!SY 6cZ C public static void log(int sMsg) HjPH { <Am^z~[ System.err.println(sMsg); 9oD#t~+F4 } g[<uwknf } ke</x+\F |vN$"mp^a "j;!_v>=f` /* 73#9NZR **TestMethod.java {lKEZirO */ -9i+@%{/ package NetFox; sp,(&Y]US | &\^n2`> -CZ-l;5 public class TestMethod { C9+Dw#-fV Xa\]ua_ ?/L1tX) public TestMethod() h!;MBn`8 { ///xx/weblogic60b2_win.exe ceI
[hM try{ 0Cv4/Ar( SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); :if5z2PE/ //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); !j'guT&9] SiteFileFetch fileFetch = new SiteFileFetch(bean); m"1
? fileFetch.start(); -*5yY#fw} } ;WPI+`- catch(Exception e){e.printStackTrace ();} 1 pYsjo~ th;]Vo 0MhxFoFO } J2x$uO{Bn q .)^B@}_ -hm9sNox public static void main(String[] args) t"FRLC { }8X:?S
% new TestMethod(); +0)5H>h } {S# 5g2 } OQ
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