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/* +RnkJ* l **SiteFileFetch.java 1_\;- !t */ 8"dv _`ym package NetFox; wvbPnf^y import java.io.*; 4eikLRD, import java.net.*; 7b<je=G6PA /%&2HDA) {_S}H1, public class SiteFileFetch extends Thread { 0KGY\,ae:; @6mBqcE'? (*oL+ef-C SiteInfoBean siteInfoBean = null; //文件信息Bean iMs5zf<M long[] nStartPos; //开始位置 =$nB/K,8AX long[] nEndPos; //结束位置 h"_~7jq" FileSplitterFetch[] fileSplitterFetch; //子线程对象 ?Rj ~f{%g long nFileLength; //文件长度 w9,iq@ boolean bFirst = true; //是否第一次取文件 :,J}z~I,lB boolean bStop = false; //停止标志 ]3g?hM6 File tmpFile; //文件下载的临时信息 9'{}!-(xR DataOutputStream output; //输出到文件的输出流 .h9l7
nZt czm&~n6$ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) (cN}Epi(D public SiteFileFetch(SiteInfoBean bean) throws IOException iVG-_RsKK { hi0R.V& siteInfoBean = bean; _>9.v%5cs( //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); |fSe>uVZ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); J41G&$j( if(tmpFile.exists ()) ( YQWbOk { `;)\u bFirst = false; E;1Jh(58)b read_nPos(); Db6om7N } f|R"uW + else >lBD<;T { cZT({uYGL nStartPos = new long[bean.getNSplitter()]; zOGU8Wg nEndPos = new long[bean.getNSplitter()]; Fd#m<" } ppFe-wY 1[jb)j1 55;g1o}}f wlEdt1G } $ZNu+tn
Y 5!EJxP9 v>Mnl public void run() CT1ja.\; { z,VD=Hnz //获得文件长度 qQ0cJIISb\ //分割文件 L~ IhsiB //实例FileSplitterFetch i} N8(B( //启动FileSplitterFetch线程 1.gG^$J d //等待子线程返回 ?}m']4p try{ .N*Pl(<[ if(bFirst) r\blyWi { q+[SbG& nFileLength = getFileSize(); A0fFv+RN3 if(nFileLength == -1) jiYmb8Q4D { \#rIQOPl? System.err.println("File Length is not known!"); z^GDJddG } _z54Ycr4H else if(nFileLength == -2) 'w14sr% { @"o@}9=d System.err.println("File is not access!"); x3u4v~ "- } !YP@m~ else /__PSK { 2hee./F` for(int i=0;i<nStartPos.length;i++) -CRQp1] { I8QjKI ( nStartPos = (long)(i*(nFileLength/nStartPos.length)); x ul]m*Z } &`fhEN for(int i=0;i<nEndPos.length-1;i++) Z*])6=2Q { ?_ dIIQ nEndPos = nStartPos[i+1]; |=EZ1<KzD } H<QT3RF2 nEndPos[nEndPos.length-1] = nFileLength; RGK8'i/X } @]![o % } o}<4*qlI |,aG%MTL 5bA)j!#)|X //启动子线程 efD)S92 fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; YFTjPBV for(int i=0;i<nStartPos.length;i++) e#B#B { %eJGte- fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 0jzbG]pc:E siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Raw)9tUt nStartPos,nEndPos,i); .-JCwnP Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); m~>Y{F2 fileSplitterFetch.start(); '*Almv { } /RyR>G! // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), <&!v1yR siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); jr)7kP@ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", {<5ybbhLV nEndPos = " + nFileLength); HBY.DCN[Z // fileSplitterFetch[nPos.length-1].start(); IJJ%$%F/ f"(X(1F Hk7q{`:N //等待子线程结束 8v71e> //int count = 0; (4@lKKiU%H //是否结束while循环 fi+R2p~vs boolean breakWhile = false; NWd<+-pC6 XUF\r]B,9 0[F:'_ while(!bStop) /1 RAAa { 1RKW2RCaW_ write_nPos(); TyKWy0x-3 Utility.sleep(500); k6kM'e3V breakWhile = true; cv(PP-'\ @ w>zF/ yi^b)2G for(int i=0;i<nStartPos.length;i++) i%{3W:!4t { 0A:n0[V:] if(!fileSplitterFetch.bDownOver) @vMA=v7a { 1.D-FPK breakWhile = false; ~Xlrvb}LP break; !;Jmg } h b/]8mR } xcJ`1*1N if(breakWhile) DOz\n|8S break; m>}8'N) {}o>{&X O,<IGO //count++; yIb,,!y9{ //if(count>4) cV-1?h63 // siteStop(); X1tXqHJF} } !vn1v)6 7n o5b]
\ WU4U Zpz System.err.println("文件下载结束!"); n}mR~YqD } +
<c^=&7Lq catch(Exception e){e.printStackTrace ();} Wy]^Ub gW } K\^ 0_F K 7DKz;o 6r"u$i`o //获得文件长度 =V97;kq+v public long getFileSize() 1ZJQs6 { |BZDhd9<{ int nFileLength = -1; D^U:
ih try{ z^nvMTC URL url = new URL(siteInfoBean.getSSiteURL()); Gq#~vr HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); `d 2,*KR httpConnection.setRequestProperty("User-Agent","NetFox"); f&4,?E;6% @mt0kV9 OTB$V k int responseCode=httpConnection.getResponseCode(); a4gi,pz$] if(responseCode>=400) K~RoUE<3[ { }]UB;id' processErrorCode(responseCode); L?Yoh< return -2; //-2 represent access is error YYg) } k#}g,0@ 1\L[i];L8 nsb4S{ String sHeader; *FR$vLGn O;[9_[ wzjU,Mwe for(int i=1;;i++) W2-=U@ { Xl |1YX1&m //DataInputStream in = new DataInputStream(httpConnection.getInputStream ());
he+#Q6 //Utility.log(in.readLine()); G+*cpn sHeader=httpConnection.getHeaderFieldKey(i); :`vP}I ^ if(sHeader!=null) 9H]_4?aX { w(nHD*nm if(sHeader.equals("Content-Length")) ]>i~6!@ { fR-C0"c nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ,}D}oo* break; n
uQM^2 } nL]^$J$ } 4\
/*jA else 1+y"i<3) break; ^]p } M~6@20$oW } FZpKFsPx catch(IOException e){e.printStackTrace ();} io4A>>W==/ catch(Exception e){e.printStackTrace ();} PWgDFL? VY 1vXM3y >x:EJV Utility.log(nFileLength); (3,.3)%` j%Y\A~DV P}3}ek1Ax return nFileLength; YJ7V`Np } MN=
sIP,zk ET^ |z f%qt)Ick //保存下载信息(文件指针位置) @=]8^?$t
0 private void write_nPos() X}4}& { 1@sM1WMX try{ u~ F;xQ output = new DataOutputStream(new FileOutputStream(tmpFile)); {GqXP0' output.writeInt(nStartPos.length); w3*-^: ?j for(int i=0;i<nStartPos.length;i++) `kBnSi o~ { |@VF.)_ // output.writeLong(nPos); @y~P&HUN output.writeLong(fileSplitterFetch.nStartPos); \Xg?Ug*9w output.writeLong(fileSplitterFetch.nEndPos); *8g<R } 2C+(":=} output.close(); [!*xO?yCJ } M7y|EB)) catch(IOException e){e.printStackTrace ();} {0jIY catch(Exception e){e.printStackTrace ();} h%#_~IA:| } 8LM#WIm? zDBD .5R; ]= x
1`j //读取保存的下载信息(文件指针位置) Aa(<L$e!` private void read_nPos() @6xGJ,s { &&RA4 try{ DR+,Y2!_GT DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ,=w!vO5s int nCount = input.readInt(); {/M\Q@j nStartPos = new long[nCount]; }#N]0I)JI nEndPos = new long[nCount]; 9fVj
8G for(int i=0;i<nStartPos.length;i++) } ~enEZ { oFg'wAO. nStartPos = input.readLong(); R ZcH+?7 nEndPos = input.readLong(); 0g(6r-2)7 } =&NOHT> input.close(); H*U` } |+ 7f2C catch(IOException e){e.printStackTrace ();} !;}2F- catch(Exception e){e.printStackTrace ();} F,Fo}YQX } 6&!l'[hU a?<?5 5j[#'3TSU private void processErrorCode(int nErrorCode) m4**>!I { LcUlc)YH5 System.err.println("Error Code : " + nErrorCode); {OxWcK\2@h } E[S' :Q }$)&{d G ]tVl{" .{ //停止文件下载 _nX%#/{ public void siteStop() h(:<(o@< { (Pz8iz bStop = true; F3 f@9@b for(int i=0;i<nStartPos.length;i++) "a(1s}, fileSplitterFetch.splitterStop(); $N\+,? wu^q`!ml F.KrZ3%4iB } %Dyh:h } lP0k: //负责部分文件的抓取 -Cj_B\ **FileSplitterFetch.java UH40~LxIma */ ^![{,o@"A package NetFox; b>=7B6 Aw 9v?V f'_S1\ import java.io.*; wznn #j import java.net.*; FE6C6dW{ zz3 r<?#5 hZF(/4Z2 public class FileSplitterFetch extends Thread { |BJqy/ SKxe3
h]}`@M" String sURL; //File URL q!2<=:f
long nStartPos; //File Snippet Start Position YX `%A6 long nEndPos; //File Snippet End Position 8nu> gA int nThreadID; //Thread's ID |uQ[W17^N boolean bDownOver = false; //Downing is over 5&%fkZ0 boolean bStop = false; //Stop identical sX~45u \ FileAccessI fileAccessI = null; //File Access interface 9Z9l:}bO Ld~4nc$H8 yM17H\ = public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException i@{*O@m { `r.N this.sURL = sURL; 7kM4Ei this.nStartPos = nStart; u9@b< this.nEndPos = nEnd; y*|L:! nThreadID = id; {e6KJ@H6 fileAccessI = new FileAccessI(sName,nStartPos);//定位 @ay|]w } $O]^Xm3{@ <[5#c*A -#Jj-t_Fe public void run() MBv/ { 5%qH7[dx while(nStartPos < nEndPos && !bStop) aZxO/b^j { f@*>P_t rBD2Si= *s36OF! try{ b\M b*o URL url = new URL(sURL); .J:;_4x HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); |Ib.) httpConnection.setRequestProperty("User-Agent","NetFox"); ,N;v~D$Y String sProperty = "bytes="+nStartPos+"-"; :'ihE\j httpConnection.setRequestProperty("RANGE",sProperty); T8mY#^sW_ Utility.log(sProperty); /[L)tj7B @dl<- e9}8RHy1$ InputStream input = httpConnection.getInputStream(); XP4jZCt9 //logResponseHead(httpConnection); VB's E6JV}`hSk d{l{P]nr byte[] b = new byte[1024]; ,-!2 5G int nRead; )ZeLaa P while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) $BaK'7=3* { T#Fn:6_= nStartPos += fileAccessI.write(b,0,nRead); vQcUaPm\$ //if(nThreadID == 1) ~Q_F~ 0y // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); e
%& } uh1S
7!^ e-jw^
h%/ssB Utility.log("Thread " + nThreadID + " is over!"); 0+p
5/5 bDownOver = true; BZ}`4W' //nPos = fileAccessI.write (b,0,nRead); +L n M\n } M-vC>u3Y catch(Exception e){e.printStackTrace ();} gDMAc/V`l } +!G4tA$g } `{%-*f^ 3 ^pYCK% nc-Qz //打印回应的头信息 !4_!J (q% public void logResponseHead(HttpURLConnection con) *qbRP"#[$ { XS3{R for(int i=1;;i++) GIK
u { T 4vogoy String header=con.getHeaderFieldKey(i); >
Z]P]e if(header!=null) va@Xb UC //responseHeaders.put(header,httpConnection.getHeaderField(header)); Z%KL[R}^w; Utility.log(header+" : "+con.getHeaderField(header)); /^~p~HKtx else pAMo
XJ` break; '}@e5^oL } :82?'aR } &bn*p.=G P`z7@9*j h<GyplG public void splitterStop() G]at{(^Vz { "Jf4N bStop = true; k"0%' Y } QXsfp ys/`{:w8p rtcJ=`)0` } j1W
bD7*8 gYRqqV !B0v<+;P8 /* >y&[BB7S6 **FileAccess.java 4(m/D>6: *//文件访问(定位,写) w4NZt|>5j; package NetFox; $#F;xys import java.io.*; N'I?fWN!;R b8eDD+ul k hT\p)w public class FileAccessI implements Serializable{ <.;@ksCPW{ 3D{82*& //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 Ml'bZLwq RandomAccessFile oSavedFile; GU2]/\W*a long nPos; i:MlD5 F 5T7_[{ B8`R(vu; public FileAccessI() throws IOException e6Wl7&@6 { X *_
SHt this("",0); yjeqv-7 } B9%yd*SJ ]kyle3#-~ Bidqf7v public FileAccessI(String sName,long nPos) throws IOException s4^[3|Zrr0 { f<Va<TL6- oSavedFile = new RandomAccessFile(sName,"rw"); T^rz!k{ this.nPos = nPos; W ]a7&S oSavedFile.seek(nPos); ]|H]9mys98 } .;]YJy kxcgOjrmI b>GqNf! public synchronized int write(byte[] b,int nStart,int nLen) dw|-=~ { dY/|/eOt<K int n = -1; |:!EHFr try{ JrY"J]/ oSavedFile.write(b,nStart,nLen); ,ivWVsN*] n = nLen; ]9bh+ } " 8~f catch(IOException e) 8 /:X&
& { |6\FI? e.printStackTrace (); 7vB9K _wCI } 6$xo# }8 >FK)p
3 C E 39W return n; S
jC)6mo }
4WBoZJ a!s.850@ GQEI f$ } ?yK%]1O fRca"v V _47j9m]f /* 4GmSG,] **SiteInfoBean.java -f-O2G= */ EhmUX@k], package NetFox; >"PqQO S)Ub/`f{s N,'[:{GOY public class SiteInfoBean { 0jip::x ifgr<QlG 6Zl.Lh private String sSiteURL; //Site's URL < e7<t9 private String sFilePath; //Saved File's Path $?CBX27AV private String sFileName; //Saved File's Name
ve6N private int nSplitter; //Count of Splited Downloading File lEVQA*u[ 8Izn'>" 4EaSg# public SiteInfoBean() I8pv:>EhC {//nSplitter的缺省值为5 3.K{T //default value of nSplitter is 5 YiY&;)w this("","","",5); d~P<M3#> } ~%8Q75tn. x):k#cu[L ?-RoqF public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) ~|0F?~eR7 { #buV;!_!E? sSiteURL= sURL; h1G*y sFilePath = sPath; TCEXa?,L sFileName = sName; {8*d;[X50 this.nSplitter = nSpiltter; _taHf %\4 Tvksf!ba 1b
%T_a } e!2%k u mV!
@oNCK \h'E5LO public String getSSiteURL() XeIUdg4>R { 6|"!sW`%N return sSiteURL; :+?W } Gn2bZ%l G2[IO $ i?i7T` public void setSSiteURL(String value) P(YG@ { "JQt#[9l sSiteURL = value; zvK5Zxl } x(/@Pt2B ;ow~vO,x ,SE$Rh public String getSFilePath() =p&'_a^$ {
6Qzu- return sFilePath; D-b2E6o6 } "o5gQTwb l:5CM[mZ y
T1Qep public void setSFilePath(String value) @7[.>I( { _c(C;s3o sFilePath = value; ah!O&ECh } 4W//Oc@e u6S0t?Udap $bi_i|? public String getSFileName() rJc)<OZjT { fO|~Oz<S return sFileName; mJDKxgGK } cf[u%{
6Y ("JV:u.L+ "aCb;2Rs public void setSFileName(String value) a+>W { t+4Y3*WeGF sFileName = value; %[\Ft } Wru
Fp gHh.|PysW :!iPn% public int getNSplitter() :2UC{_ { kj3o1 Y return nSplitter; =[)N6XV 3 } g<T`F 8$<AxNR
dj'8x48H2W public void setNSplitter(int nCount) j_a~)o-p { | 8L`osg nSplitter = nCount; C"Y]W-Mgg } #!d^3iB2 } 548[!p4 ]20"la5 ">vYEkZ3 /* ,8"[ /@ **Utility.java (8-lDoW */ =@jMx^A" package NetFox; aEqI51I 97))'gC t|U2ws# public class Utility { gUszMhHX j.'"CU &<P^Tvqq& public Utility() cV_IG}LJ { -z 5k4Y nM.?Q}yO~ Oc/_T> } b;{"lJ:+Z hHl-;%# //线程睡眠 ocuVDC public static void sleep(int nSecond) BfE-s< { 'GzhZ`E6 try{ aCi^^}! Thread.sleep(nSecond); 73z|'0. } AB&wn>q catch(Exception e) u r.T YKF { n`T[eb~ e.printStackTrace (); .f<VmUca } .yfqS|( } YG1`%,OW` '-]BSU //日志 Y$$?8xr
~ public static void log(String sMsg) $0S" Lh{ { n25tr'= System.err.println(sMsg); ,Ho.O7H } KIBZQ.uG 5F sj_wFk o4 g public static void log(int sMsg) kmr
4cU5 { "gikX/Co= System.err.println(sMsg); >Wit"p } ~5!TV,>ls } G1^!e j jzA8f+:q y'O{8Q8T /* MHyl=5 **TestMethod.java rHBjR_L.2 */ [5eT|uy package NetFox; RrpFi'R kBT}Siw Y4qyy\} public class TestMethod { :aqskeT UR2)e{RXg *#^1rKGWK public TestMethod() HgATH { ///xx/weblogic60b2_win.exe !gew;Jz try{ 6Oba}`)q9 SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); h}&IlDG //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); D=sc41] SiteFileFetch fileFetch = new SiteFileFetch(bean); _";pk _ fileFetch.start(); }~'Wz*Gm } rPpAg catch(Exception e){e.printStackTrace ();} ~%:p_td O:p649A KmOa^vY1.T } b e%*0lr *`.{K12T tRBK1h public static void main(String[] args) FF!g9> { E(LE*J new TestMethod(); K/+C6Y? } hBE>e a } iPO
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