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/* }Y:V&4DW **SiteFileFetch.java k..AP<hH */ E%LUJx} package NetFox; Qco8m4n import java.io.*; VYbH:4K@% import java.net.*; k'QI`@l&l ? fW['% 0fu*}v" public class SiteFileFetch extends Thread { !y+uQ_IS@ T5|e\<l $O3.ex V SiteInfoBean siteInfoBean = null; //文件信息Bean 2ca#@??R long[] nStartPos; //开始位置 ~[<C6{ long[] nEndPos; //结束位置 C cPOK2 FileSplitterFetch[] fileSplitterFetch; //子线程对象 |P@N}P@ long nFileLength; //文件长度 G>=Fdt7Oc boolean bFirst = true; //是否第一次取文件 :CLWmMC_ boolean bStop = false; //停止标志 .J<t] File tmpFile; //文件下载的临时信息 hi`[ DataOutputStream output; //输出到文件的输出流 =WT&unw} _AzI\8m //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 1oe,>\\ public SiteFileFetch(SiteInfoBean bean) throws IOException [;H-HpBaa { 4M#i_.`z siteInfoBean = bean; pT{is.RM //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); }ZK%@b> tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); |sd G<+ if(tmpFile.exists ()) 47N,jVt4 { Z_[ P7P bFirst = false; ;4l8Qg
7 read_nPos(); ; [G: } DQ(0:r else p#).;\M { R2v9gz;W nStartPos = new long[bean.getNSplitter()]; A
0v=7
] nEndPos = new long[bean.getNSplitter()]; 8OKG@hc } FRuPv6 }f;WYz 5 fcxg6W' &Ts!#OcB, } 3_<l`6^Ns/ ,A'| Z Q7rBc
wm5 public void run() MA,*$BgZ { U$mDAi$ //获得文件长度 [I=|"Ic~ //分割文件 {.542}A //实例FileSplitterFetch aX`uF<c9 //启动FileSplitterFetch线程 eT+i& //等待子线程返回 5mQ@&E~#W try{ WW+xU0 if(bFirst) gu3iaM$W { vP x/&x nFileLength = getFileSize(); K(i}?9WD if(nFileLength == -1) K fD.J) { VxBBZsZO~ System.err.println("File Length is not known!"); @QV0l]H0+ } arDl2T,igF else if(nFileLength == -2) g]lEG>y1R { Bhxs(NO System.err.println("File is not access!"); n74\{`8]o } ZA+dtEE=f9 else ka~_iUU4 { 9T;4aP>6j# for(int i=0;i<nStartPos.length;i++) #h?IoB7 { tsAV46S nStartPos = (long)(i*(nFileLength/nStartPos.length)); |]4!WBK } ao2^3e for(int i=0;i<nEndPos.length-1;i++) _;BwP { eJ99 W= nEndPos = nStartPos[i+1]; Q]YB.n3 } l::q
F 0 nEndPos[nEndPos.length-1] = nFileLength; g3z/yj } )GkJ%o#H2 } g%&E~V/g$ A#.
%7S ^1najUpQ_n //启动子线程 GHsDZ(d3. fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; JWNN5#=fQ for(int i=0;i<nStartPos.length;i++) %Psg53N { L1SX2F8 fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), }F>RIjj siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Ca~8cQ nStartPos,nEndPos,i); *j3U+HV Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); o<nM-"yWb fileSplitterFetch.start(); A[l
)>: } Ti? "Hr<W // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), %r^tZ ;;l siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 9K$
x2U // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ;P S4@, nEndPos = " + nFileLength); bW`nLiw}% // fileSplitterFetch[nPos.length-1].start(); /nO_e {,Z|8@Sl% 1)~|{X+~ //等待子线程结束 x// uF //int count = 0; jRsl/dmy //是否结束while循环 !j $cBf4 boolean breakWhile = false; >#h,q|B ;`
L%^WZ;- /`m*PgJ while(!bStop) hJSvx { pLu5x< write_nPos(); |eRE'Wd0 Utility.sleep(500); `+Nv=vk breakWhile = true; :
;8L1' kI"9T`owR lW"0fZ_x'E for(int i=0;i<nStartPos.length;i++) P].Eb7I { s17)zi,?4 if(!fileSplitterFetch.bDownOver) Tv#d>ZSD { q]1p Q)\'p breakWhile = false; (.$e@k= break; ~^g*cA
t} } /XuOv(j } }%,LV]rGEZ if(breakWhile) 5*y6{7FLp break; > mP([] t0ZaI E GRgpy //count++; :-+j,G9t //if(count>4) zwlz zqV // siteStop(); '^:q|h } 3+vMi[YO )EsFy6K: OL@' 1$/A System.err.println("文件下载结束!"); #4& <d.aw' } R+=Xr<`%U| catch(Exception e){e.printStackTrace ();} *nY$YwHB } vPu{xy 4+N9Ylh B,{Q[ //获得文件长度 ,Mu"r!MK public long getFileSize() <d3a { K=J">^uW int nFileLength = -1; g+ cH try{ h]^=
y.Q URL url = new URL(siteInfoBean.getSSiteURL()); %Q5
|RLD HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); S\A9r!2 httpConnection.setRequestProperty("User-Agent","NetFox"); J/A UOInh ']>/$[! SrvC34<7 int responseCode=httpConnection.getResponseCode(); NKu*kL}W= if(responseCode>=400) l]geQl:7`r { pIvr*UzY processErrorCode(responseCode); .:TSdusr~ return -2; //-2 represent access is error ;-{'d8 } }H9V$~}@- !;&{Q^} :>, m$XO String sHeader; qoJ<e`h} ,) 3Eog\- /8s>JPXKH[ for(int i=1;;i++) '<hgc
{ Q+^ "v]V`d //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); .OvH<%g!. //Utility.log(in.readLine()); 2[Bw+<YA` sHeader=httpConnection.getHeaderFieldKey(i); ]*yUb-xY if(sHeader!=null) hkvymHaG { rPoq~p[Y if(sHeader.equals("Content-Length")) uBxs`'C { Zl=IZ?F
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); N/eFwv.Er break; C3e0d~C } 0D^c4[Y'l } JReJlDu else 6^hCW`jG break; 5?C) v}w+ } =sh]H$ } iKe68kx catch(IOException e){e.printStackTrace ();} bRK[u\, catch(Exception e){e.printStackTrace ();} sWX\/Iyy2p Om C
F8:\/ s%S; 9T Utility.log(nFileLength); 3v:c'R0 )+12r6W @N+6qO} return nFileLength; CC{{@
} ,L9ioYbp YV/JZc f XXZ <r //保存下载信息(文件指针位置) ~<Sb:Izld private void write_nPos() \tZZn~ex { xBKis\b try{ k5]`:k6 output = new DataOutputStream(new FileOutputStream(tmpFile)); R}Z2rbt output.writeInt(nStartPos.length); B>,&{ah/5J for(int i=0;i<nStartPos.length;i++) b;Uqyc { W>(p4m // output.writeLong(nPos); Pvu*Y0_p output.writeLong(fileSplitterFetch.nStartPos); t{Xf3. output.writeLong(fileSplitterFetch.nEndPos); )NL_))\ } FW--|X]8 output.close(); -mAi7[omh } |sklY0?l( catch(IOException e){e.printStackTrace ();} e95@4f^K2 catch(Exception e){e.printStackTrace ();} !_#2$J*s^D } <c$K3 xRPUGGv "`8~qZ7k //读取保存的下载信息(文件指针位置) 0z:BSdno private void read_nPos() T9=55tpG9 { v'H\KR-; try{ ;Alw`' DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); _vgFcE~E@ int nCount = input.readInt(); i*-L_!cc: nStartPos = new long[nCount]; 47
*, nEndPos = new long[nCount]; >xJh!w<pB for(int i=0;i<nStartPos.length;i++) >,s.!vpK { AEr8^6 nStartPos = input.readLong(); f+iM_MI nEndPos = input.readLong(); [W{WfJ-HwG } _k2*2db input.close(); huw|J<$ } pz]#/Ry? catch(IOException e){e.printStackTrace ();} v<c@bDZ> catch(Exception e){e.printStackTrace ();} -^+!:0'; } )`B
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U9oy&!C gV-x1s+ private void processErrorCode(int nErrorCode) ~i ImM|*0 { \6z_; System.err.println("Error Code : " + nErrorCode); GN%|'eU } NHjZ`=Js pk,]yi,ZF I"1H]@"= //停止文件下载 zPKx: I3 public void siteStop() H6I]GcZ$ { mqFo`Ee bStop = true; lE@ V>%b for(int i=0;i<nStartPos.length;i++) rbw5.NU fileSplitterFetch.splitterStop(); =Pu;wx9 R<GnPN:c 1>"[b8a/ } 2y0J~P! I } ,|r%tNh<8$ //负责部分文件的抓取
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V*Z **FileSplitterFetch.java Z+G.v=2q< */ VX<jg #( package NetFox; NEb M>1>^ wVms"U. ,4&?`Q import java.io.*; c4'k-\JvT import java.net.*; CC<(V{Png 6|-V{ !iO%?nW; public class FileSplitterFetch extends Thread { <HC5YA)4 R
rtr\a qP}187Q1 String sURL; //File URL sD!)= t_ long nStartPos; //File Snippet Start Position 7|/Ct;oO: long nEndPos; //File Snippet End Position vTdJe int nThreadID; //Thread's ID -xXz}2S4 boolean bDownOver = false; //Downing is over 1YrIcovi- boolean bStop = false; //Stop identical K#e&yY FileAccessI fileAccessI = null; //File Access interface ls928 KT>eE aA|<W
g public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ,@#))2<RK { $k,wA8OZ- this.sURL = sURL; |*T3TsP u this.nStartPos = nStart; 1ab_^P this.nEndPos = nEnd; 1#D &cx6 nThreadID = id; {|E' fileAccessI = new FileAccessI(sName,nStartPos);//定位 fQkfU;5 } 26&$vgO~: -*<4 hFb jgW-&nK! public void run() K|{IX^3)V { 6Bop8B while(nStartPos < nEndPos && !bStop) a4[t3U { edo+ o{^ 8iTB S Rk%BJ? ~ try{ H:)_;k URL url = new URL(sURL); $J):yhFs e HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); }K5okxio httpConnection.setRequestProperty("User-Agent","NetFox"); Z9.0#Jnu String sProperty = "bytes="+nStartPos+"-"; +n<W#O% httpConnection.setRequestProperty("RANGE",sProperty); sh R| Utility.log(sProperty); %!r.)Wx|2 wX5q=I 58d[>0Xa[g InputStream input = httpConnection.getInputStream(); 3@qv[yOE //logResponseHead(httpConnection); F}7sb#G WrSc@j&Ycv X i1|% byte[] b = new byte[1024]; ALy7D*Z]w int nRead; c-PZG|<C[ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ``P9fd {
4g"%?xN nStartPos += fileAccessI.write(b,0,nRead); J
jm={+@+ //if(nThreadID == 1) _U} vKm // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); hPUAm6b; } BvsSrse 8}m J)9<7 e`S\-t?Z Utility.log("Thread " + nThreadID + " is over!"); MqB@}! bDownOver = true; *g,ls(r\[ //nPos = fileAccessI.write (b,0,nRead); rVqQo`K\ } jLVG=rOn catch(Exception e){e.printStackTrace ();} |$b8(g$s) } 0cE9O9kE } QM#Vl19>j( c)LG+K mmbe.$73 //打印回应的头信息 jwT` Z public void logResponseHead(HttpURLConnection con) \1jThJn { Yu\$Y0 {] for(int i=1;;i++) }q`9U!v { s`_EkFw>Gl String header=con.getHeaderFieldKey(i); aL4^ po if(header!=null) $j.;$~F //responseHeaders.put(header,httpConnection.getHeaderField(header)); ["<Xh0_ Utility.log(header+" : "+con.getHeaderField(header)); o 2Nu@^+ else Tc/^h4xH break; b^Z2Vf:k] } !:!(=(4$P } 6X*vCylI >)u;X h(HpeN%`# public void splitterStop() } +}nrJv { OUi;f_*[r bStop = true; |y U!d
% } P|<V0
Vs. ~^1y(-cw 5_aj]"x } Xx{| [2` q*UHzE:LI {P8d^=#q /* 3p=Xv%xd **FileAccess.java ]ub"OsXC *//文件访问(定位,写) %=UD~5!G0 package NetFox; N.JR($N$ import java.io.*; H54RA6$> Y1-dpML r >'tE7W9 public class FileAccessI implements Serializable{ FMVAXOO YRlf U5 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 Mp`$1Ksn RandomAccessFile oSavedFile; 2R&\qZ< long nPos; ~.W]x~X$ fp [gKRSF bT,_=7F public FileAccessI() throws IOException 2o SM| { &D<R;>iI this("",0); 1wR[nBg*| } I\mF dE +hN>Q$E 83vMj$P public FileAccessI(String sName,long nPos) throws IOException RIMSXue*Ha { :c/54Ss~ oSavedFile = new RandomAccessFile(sName,"rw"); 3]*Kz*i this.nPos = nPos; p\&O;48= oSavedFile.seek(nPos); &e^;;<*w } m]n2wmE3n DB|1Sqjsn Fl`U{03 public synchronized int write(byte[] b,int nStart,int nLen) 1B;2 ~2X { ]hS:0QE int n = -1; =.3#l@E!C try{
r!Eh}0bL oSavedFile.write(b,nStart,nLen); uPfz'|, n = nLen; h&'|^;FM } EZ<:>V-_D catch(IOException e) CTNL-> { 0+CcNY9 e.printStackTrace (); e0P[,e*0 } EVPQe- ?06gu1z/ G0
)[(s return n; !yd B,S }
vfkF@^D =ANr|d ga
+,
P } lUu0AZQmG &4t=Y`]SL !y1qd /* M%13b$i~f **SiteInfoBean.java ;Uypv|xX */ &x.5TDB>% package NetFox; gf;B&MM6 IYr4 _y [B/C,q public class SiteInfoBean { lR
ZuXo9< %B>>J% =dQ46@ private String sSiteURL; //Site's URL FYaBP;@J% private String sFilePath; //Saved File's Path utdus:B#0 private String sFileName; //Saved File's Name CTB
qX private int nSplitter; //Count of Splited Downloading File (Kkqyrb od/Q"5t[p =,U~ public SiteInfoBean() 2G/CN" {//nSplitter的缺省值为5 meD?<g4n~" //default value of nSplitter is 5 X5)].[d this("","","",5); C%P"\>5@ } =6,w~|W x]"N:t >
8!9 public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) I(Q3YDdb { 2,6|l.WFpE sSiteURL= sURL; H1ox>sC sFilePath = sPath; O=}jg0k sFileName = sName; Kb#Z(C9 this.nSplitter = nSpiltter; mk`#\=GE ;0 9~#Wop |s[k= /~" } w;DRC5V> ":Ll.=! a*UxRi8 public String getSSiteURL() /c52w"WW { _*dUH5 return sSiteURL; #s]` jdc } +m1y#|08 %D<>F&h Jbqm?Fy4X public void setSSiteURL(String value) =bl6: { |7E1yu sSiteURL = value; Ab)X/g-I@ } ]w9\q*S] ~V!gHJ5M /UPe@ public String getSFilePath() 20k@!BNq { 222Mm/QN return sFilePath; nv2p&-e+ } ^Y+P(o$HM xe!6Pgcb `@Tl7I\ public void setSFilePath(String value) VF] ~J=>i { H.]rH,8 sFilePath = value; 1a>TJdoa } qrZ*r{3 t,vj)|: @Rp#*{ public String getSFileName() GFppcL@a { <b$.{&K return sFileName; `37$YdX } akB+4?+s) "[tb-$ER 8ZPjzN>c6 public void setSFileName(String value) n+9rx]W, { #<EMG|&( sFileName = value; X4{O/G } |VxO ,[~ r;
pS_PV 2~(\d\k public int getNSplitter() 1'Y7h;\~\ { ipdGAG return nSplitter; 6< O|,7=_ } " }oH3L "Q< D +Ui1h- public void setNSplitter(int nCount) gOL-b9W { ;N;['xcx; nSplitter = nCount; M:QM*?+) } ?f'iS#XL } "yA=Tw 0AWOdd>. Ia!B8$$'RP /* uEX+j **Utility.java Vnvfu!>( */ I5mtr package NetFox; ;r.0=Uo9] ?4A$9H s !XJ public class Utility { %|\Af>o4d 49d02AU% l`k""f69W public Utility() Bt[Wh@ { +\/1V` -gK*&n~ 7wB*@a- } [B+]F~}@ ;V)jC //线程睡眠 2?)8s"Y public static void sleep(int nSecond) !)-)*T { {#C)S&o)6 try{ vtu!* 7m Thread.sleep(nSecond); c[<>e#s+; } wJMk%N~R: catch(Exception e) 2.PZtl {
_CImf1 e.printStackTrace (); N3$%!\~O } c%x9.s<+1 } %`)lCK)2 >Sc/E}3 //日志 o>i@2_r\&H public static void log(String sMsg) $/#F9>eZ { tQWjNP~ System.err.println(sMsg); b9RJ>K } Da-U@e! 6tZ ak1=V J5"d|i public static void log(int sMsg) ,+GS.]8< { 57(5+Zme System.err.println(sMsg); dKJ-{LV } yE{\]j|Zf } dC(5I{I| vTsMq>%,< C/#?S=w`4 /* 9!?Ywc>0# **TestMethod.java )Lg~2]'?j */ 'HJ<"< package NetFox; Z5eM 4+:'$Nw [CfZE public class TestMethod { 8x LXXB 8F[ ;ma>Z8 w{|`F>f9 public TestMethod() @"A
5yD5 { ///xx/weblogic60b2_win.exe 'DNxc try{ :T?WN+3 SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); K*2s-,b * //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); Mis B&Ok`k SiteFileFetch fileFetch = new SiteFileFetch(bean); Vdefgq@< fileFetch.start(); l4.ql1BX@y } ?e4H{Y/M catch(Exception e){e.printStackTrace ();} mMOgx *?~"Jw @mv
G=:k } [!wJIy?, t 4zUj%F wIR"!C>LE public static void main(String[] args) ='w 2"4 { ]\A=[T^ new TestMethod(); l0URJRK{* } ks6iy}f7 } 64mD%URT 点击下载更多相关资料
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