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/* jF}-dfe **SiteFileFetch.java O 9C&1A|lA */ M#_|WL~ package NetFox; F8S>Ld import java.io.*; f{.4#C' import java.net.*; q{ [!" , ]|-sZ<?<i xg}Q~,: public class SiteFileFetch extends Thread { bksv2@ar )bWopc k8?G%/TD SiteInfoBean siteInfoBean = null; //文件信息Bean ) ViBH\.*p long[] nStartPos; //开始位置 9=mc3m:Tb( long[] nEndPos; //结束位置 1<tJ3>Xl FileSplitterFetch[] fileSplitterFetch; //子线程对象 i! x>)E long nFileLength; //文件长度 en '""
w boolean bFirst = true; //是否第一次取文件 wRvh/{xB boolean bStop = false; //停止标志 =EYWiK77a File tmpFile; //文件下载的临时信息 z2>LjM)
# DataOutputStream output; //输出到文件的输出流 [l3ys
$nb.[si\ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 6w=`0r3hy public SiteFileFetch(SiteInfoBean bean) throws IOException
ny
cn { <iA\ZS: siteInfoBean = bean; %q}[ZD/HD //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); /w1M%10 tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); E.Q]X]q if(tmpFile.exists ()) |AH>EXhv { :KgH7s} bFirst = false; DXo]O}VF read_nPos(); S,j. ?u*! } @c- else -V4%f{9T3 { lm6hFvEZ nStartPos = new long[bean.getNSplitter()]; &JXb) W nEndPos = new long[bean.getNSplitter()]; ME$J42 } iy8J l 0,nz*UDk -V:HT
j ,3!$mQL= } *E*oWb]H {zWR)o .= 9b/Dswxjx public void run() ESNI$[` { @ 5^nrB //获得文件长度 -OSj<m< //分割文件 ^DN:.qQ //实例FileSplitterFetch 8L,=E ap //启动FileSplitterFetch线程 FieDESsX> //等待子线程返回 >MGWN try{ c}+*$DeT if(bFirst) *5 +GJWKN { g@37t @I nFileLength = getFileSize(); <|3%}? if(nFileLength == -1) P`ou:M{8 { .%s
U)$bH System.err.println("File Length is not known!"); ~ney~Pz_ } x ZP*%yM else if(nFileLength == -2) +Q[uq!<VJk { L;*
s-j6y System.err.println("File is not access!"); NNF"si\FE } K8aqC{ else *68 TTBq( { wS);KLe3 for(int i=0;i<nStartPos.length;i++) ~\mh\a& { JwB'B nStartPos = (long)(i*(nFileLength/nStartPos.length)); At"$Cu!k } HT6 [Z1 for(int i=0;i<nEndPos.length-1;i++) #n'.a1R {
v&|65[< nEndPos = nStartPos[i+1]; `Bw]PO } "bIb?e2h9G nEndPos[nEndPos.length-1] = nFileLength; X+C*+k,z } a8f#q]TyQ } %\v8FCb aknIrblS\ VD~5]TQ //启动子线程 \4L ur fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 0eNdKE for(int i=0;i<nStartPos.length;i++) %W"u4
NT7 { uMEM7$o fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), vY-CXWC7 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), \ dFE.4 nStartPos,nEndPos,i); V6X )L>!xx Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); '< U&8?S fileSplitterFetch.start(); -B H/)$-$ } O|V0WiY< // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), !,$#i siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 7ocUFY0" // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Xj
1Oxm42 nEndPos = " + nFileLength); :YI5O/gsk? // fileSplitterFetch[nPos.length-1].start(); =3.dgtH wX0D^)NtF kU[hB1D5 //等待子线程结束 F#gA2VCm //int count = 0; l!f_ +lv //是否结束while循环 Qds<j{2 boolean breakWhile = false; rXi&8R[ [zx|3wWAX- l S)^8 while(!bStop) '9zW#b {
E.h write_nPos(); pM?~AYWb Utility.sleep(500); oI;ho6y) breakWhile = true; V
9Qt;]mQ byxlC?q7 t,?,T~#9 for(int i=0;i<nStartPos.length;i++) q<
XFw-Pv { DjM*U52Yfj if(!fileSplitterFetch.bDownOver) sfyLG3$/ { LN|(Z* breakWhile = false; 5rows]EJJl break; { c#US } Y(g_h:lf,] } Z 2N6r6 if(breakWhile) Vr
EGR$ break; w$:\!FImx gx.\H3y In1W/? //count++; ;OlnIxH(W //if(count>4) 1'qXT{f/~ // siteStop(); ~.:{
Ik] } :C*}Yg ]E-/}Ysz ^OKm ( System.err.println("文件下载结束!"); f~NS{gL* } J8emz8J catch(Exception e){e.printStackTrace ();} N1Vj;- } A0<g8pv
$@L;j k|/VNV( =0 //获得文件长度 /oT~CB.. public long getFileSize() ZAr6RRv ^ { H~Uf2A)C int nFileLength = -1; Sb[>R(0: try{ k24I1DlR8 URL url = new URL(siteInfoBean.getSSiteURL()); \J+a7N8m, HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); !|Q&4NS httpConnection.setRequestProperty("User-Agent","NetFox"); X5iD<Lh ~JT`q:l-q ] 0X|_bU int responseCode=httpConnection.getResponseCode(); wH ,PA: if(responseCode>=400) G}8tFo.d1 { <D.E.^Y processErrorCode(responseCode); !-lI<$S: return -2; //-2 represent access is error N;3!oo4 } sfX~X/ uOA/r@7I}S k+9F;p7 String sHeader; g>VtPS5 y q-(~w!e 6{I7)@>N for(int i=1;;i++) $VmV>NZ { e3ZRL91c //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); F_qApyU,7 //Utility.log(in.readLine()); rr
tMd sHeader=httpConnection.getHeaderFieldKey(i); k* C69 if(sHeader!=null) l$gJ^Wf2gY { A;;#]]48 if(sHeader.equals("Content-Length")) =3035{\ { nX (bVT4i nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); Z?+ )ox break; ,7B7X)m{3 } P8YnKyI,. } LA6XTgcu else g=\(%zfsxr break; !0l|[c4 e> } L ci? } SSI> +A catch(IOException e){e.printStackTrace ();} ]Ozz"4Z catch(Exception e){e.printStackTrace ();} X"TL'"?fo nk|(cyt) vFe=AY<Rt| Utility.log(nFileLength); ~T@E")uR E<yQB39 (d&" @ return nFileLength; &`m.]RV } `:iMGqZN 96\FJHtZ 1|p\rHGd //保存下载信息(文件指针位置) <sC(a7i1 private void write_nPos() fQ 9af)d { )zWu\JRp try{ (Mfqzy output = new DataOutputStream(new FileOutputStream(tmpFile)); TIp\- output.writeInt(nStartPos.length); .uA
O.< for(int i=0;i<nStartPos.length;i++) %`$bQU { Z2W&_(^.h // output.writeLong(nPos); s>DFAu! output.writeLong(fileSplitterFetch.nStartPos); W>' DQB output.writeLong(fileSplitterFetch.nEndPos); XIMh< } 570ja7C: output.close(); >7WT4l)7!b } iX?j "=! catch(IOException e){e.printStackTrace ();} .Yk}iHcW. catch(Exception e){e.printStackTrace ();} 4M"'B A< } Ue9d0#9 |}77'w : '@ 24<T] //读取保存的下载信息(文件指针位置) k
x:+mF private void read_nPos() 8;qOsV)UDT { mg*iW55g try{ NkUY_rKPb DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); F42^Uoaz int nCount = input.readInt(); ;R+Gf!1 nStartPos = new long[nCount]; s1OSuSL> nEndPos = new long[nCount]; ~Xx}:@Ld for(int i=0;i<nStartPos.length;i++) P=}l.R*1G { i{}m 8K) nStartPos = input.readLong(); 3x(Y+
ymP nEndPos = input.readLong(); bSTori5 } "A[.7 w input.close(); {v!w2p@ } =&g:dX|q8 catch(IOException e){e.printStackTrace ();} @[D5{v)S catch(Exception e){e.printStackTrace ();} C,ldi"| } lGet)/w;c ZW))Mx#K=T E7$ aT^ private void processErrorCode(int nErrorCode) LI-ewea { tG]W!\C'h System.err.println("Error Code : " + nErrorCode); [Qr_0O } un\o&0} ^d>m`*px $m)eO8S+ //停止文件下载 .&u
@-Vm public void siteStop() ^Cp;#|g, { <DqFfrpc bStop = true; Urw =a$ for(int i=0;i<nStartPos.length;i++) #+i5'p(4 fileSplitterFetch.splitterStop(); MNh:NFCRA {%2p(5FB 5bZ0}^FYF } JiqhCt\ } rxxVLW //负责部分文件的抓取 Eb,M+c? **FileSplitterFetch.java oVl:g:K40 */ )3F}IgD package NetFox; A
_7I0^ `MT.<5H P{RGW.Ci@ import java.io.*; k(`> (w import java.net.*; e0C_ NFS+ \]FPv7! af[dkuv public class FileSplitterFetch extends Thread {
ndyIsR ./tZ*sP: JrxQ.,*i String sURL; //File URL :MYLap&L& long nStartPos; //File Snippet Start Position
zW ?=^bE long nEndPos; //File Snippet End Position ~- aUw}U int nThreadID; //Thread's ID 2*W|s7cc boolean bDownOver = false; //Downing is over uKY1AC__ boolean bStop = false; //Stop identical L{ej<0 yr FileAccessI fileAccessI = null; //File Access interface IM,d6lN6s >z3l@ nr>Yj?la public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 0#5&* { a U<+ ` this.sURL = sURL; h5vetci/ this.nStartPos = nStart; 6R2F,b(_ this.nEndPos = nEnd; MO1H?Uhx nThreadID = id; jJ
RaY3 fileAccessI = new FileAccessI(sName,nStartPos);//定位 6EY0Fjsi } O*F= xG N+]HJ`K 6 {`J I public void run() [$]-W$j+ { A(XX2f!i while(nStartPos < nEndPos && !bStop) }Oe4wEYN) { -g"Wi@Qr >N0L cI6Td*vM try{ ?:5/4YC URL url = new URL(sURL); (s+}l? HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); tI0D{Xrc httpConnection.setRequestProperty("User-Agent","NetFox"); (j%"iQD String sProperty = "bytes="+nStartPos+"-"; yJw.z#bB# httpConnection.setRequestProperty("RANGE",sProperty); sVlQ5M oo( Utility.log(sProperty); #|V)>") U$=Z`^< fn5!Nr , InputStream input = httpConnection.getInputStream(); SJ,];mC0 //logResponseHead(httpConnection); D;:p6q}hT l?X)]1 P#:n Xc$ byte[] b = new byte[1024]; 9*s:Vff{ int nRead; Q{
g{ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) eS%8WmCV9< { fG@]G9Z nStartPos += fileAccessI.write(b,0,nRead); ]P_yN:~ //if(nThreadID == 1) zq$0 ?vGd // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); bdBLfWe } ;e2D} .8|"@ qP9`p4c8i Utility.log("Thread " + nThreadID + " is over!"); b$/7rVH! bDownOver = true; y?iW^>|?L= //nPos = fileAccessI.write (b,0,nRead); R_80J=%0 } s?9`dv}P catch(Exception e){e.printStackTrace ();} /.UISArH } S2
-J1x2N } (V}?y:) )ItW}1[I nx!+:P , //打印回应的头信息 >+%0|6VSb public void logResponseHead(HttpURLConnection con) H@|m^1 { Kciz^)'Z for(int i=1;;i++) IR8qFWDZ { 2%-/}'G* String header=con.getHeaderFieldKey(i); RRpCWcIv" if(header!=null) yx<-M //responseHeaders.put(header,httpConnection.getHeaderField(header)); 4^^=^c Utility.log(header+" : "+con.getHeaderField(header)); jU{~3Gn? else XCGK&OGI break; 0Fs2* FS } "JgwL_2 } _Q*,~ z~ OL.{lKJ3DV cVaGgP}\ public void splitterStop() rj29$d?Y9 { rLp0)Go bStop = true; <.
V*]g/; } ~T=a]V \O*W/9
+ &<(&u`S } ~qE:Nz0@ !#4b#l(e6 1#XZVp;M /* ddlF4L_ **FileAccess.java j9f Q V *//文件访问(定位,写) Wm!cjGK package NetFox; \5#eBJ import java.io.*; IRsyy\[kp8 h\|T(597. nKch:g public class FileAccessI implements Serializable{ {T5u"U4 }(#;{_ //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 F ^)(
7}ph RandomAccessFile oSavedFile; -{p~sRc& long nPos; 5[`f(; G4EuW *~ dlDO?T public FileAccessI() throws IOException [n$6T { &3 x
[0DV this("",0); K*tomy } xE6hE'rh.O p%+'iDb _"#n%@ public FileAccessI(String sName,long nPos) throws IOException }4q1"iMlO { N3\vd_D( oSavedFile = new RandomAccessFile(sName,"rw"); T=[/x= this.nPos = nPos; !wo oSavedFile.seek(nPos); 50Ov>(f@7 } C|S~>4` `>HrO}x^ kq>I?wg public synchronized int write(byte[] b,int nStart,int nLen) &iaS3x { Pu,2a+0N int n = -1; 3
t+1M try{ V?n=yg oSavedFile.write(b,nStart,nLen); 7J|nqr`>t n = nLen; whQJWi=ck } CS;4 ysNf catch(IOException e) 5M#LO@U { n}8}:3" e.printStackTrace (); $OaxetPH } {Lsl2@22 Bh65qHQO E_#?;l> return n; rs0Wy
} lB HDj260a a-NicjV# } V=H :`n3k Bm+Ca:p% ,Y7QmbX^ /* SL`nt **SiteInfoBean.java Lv<vMIr */ ,#j'~-5 package NetFox; ^MvBW6#1 !d1a9los _W>xFBy
public class SiteInfoBean { HnKXO !9_'_8 ,k}(]{ - private String sSiteURL; //Site's URL R#W=*cN private String sFilePath; //Saved File's Path G|z%T`!U1; private String sFileName; //Saved File's Name #@P0i^pFTB private int nSplitter; //Count of Splited Downloading File E^m;Ab= M]SeNYDy f%rZ2h) public SiteInfoBean() wotw nE {//nSplitter的缺省值为5 sAoxLI //default value of nSplitter is 5 EvF[h:C2 this("","","",5); v4,Dt } *$@u`nM A}(o1wuw FzG>iC} public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) %RzCJxT { EKEJ9Y+47H sSiteURL= sURL; ?$VkMu$2k sFilePath = sPath; M<P8u`)>4H sFileName = sName; :a9 this.nSplitter = nSpiltter; tNz(s) Sv!JA#Ag ==EB\>g| } 4u#TKr. Hz>Dp
! jW>K#vj public String getSSiteURL() xL"O~jTS { d-TpY*v return sSiteURL; DTHWL } P=Su)c z#2n+hwE |^"0bu" public void setSSiteURL(String value) S:1g(f*85 { mp
z3o\n sSiteURL = value; ~JO.h$1C } <jBRUa[j_ @4n>I+6*& Z}.ZTEB public String getSFilePath() Z{ 1B:aW { `UTUrM return sFilePath; <(i5hmuVd } ^,aI2vC ER0B{b `4g}(- public void setSFilePath(String value) me-uPm {
m~uT8R#$ sFilePath = value; L+}<gQJ( } LL==2KNUo w/*m_O\! 5GGO: public String getSFileName() M~~)tJYsu { t(jE9t|2e6 return sFileName;
w"C,oo3 } M{4XNE]m kT:I.,N nu(7YYCM$ public void setSFileName(String value) o=Y'ns^a( { ]J@-,FFC sFileName = value; n]i#&[*A( } mi[8O$^iJ !s:e 'xEK0~awD public int getNSplitter() IhOAMH1 { ?:G 3U\M return nSplitter; GxEShSGOE } wxYGr`f ZB`d&!W> 6@eF|GoP public void setNSplitter(int nCount) :>U+HQll { E;[Uhh|78! nSplitter = nCount; dT[JVl+3= } h~ZLULW)B } wE}Wh5 =[LorvX+ 216$,4i /* [2h.5.af **Utility.java MdmN7> */ !#=3>\np+X package NetFox; Gr#3GvL u@CQ+pnf:( gd*2*o$g( public class Utility { :2K@{~8r ]qxl^Himq Dp!91NgB p public Utility() 8KYI Hw { e.~11bx ,~DV0#" ZvMU3])u } P-3f51 Q =1@LMIi5x //线程睡眠 EC 1|$Co public static void sleep(int nSecond) 6|~^P!& { _^NyLI% try{ t"Ah]sD Thread.sleep(nSecond); cvG*p|| } Id&e' catch(Exception e) M X8|;t { @`dlhz e.printStackTrace (); *@H\J e` } gKQV99 } W"GW[~
h eLnS1w2 //日志 I7~) q` public static void log(String sMsg) ~f[ Y; { k5Fj"U System.err.println(sMsg); igW* {)h3 } |`t 6lVO,Z X%3?sH H!&_Tv[ public static void log(int sMsg) Tjhy@3 { cR_ pC
9z System.err.println(sMsg); O^j*"#f } &K{8-
t } ');vc~C rQyjNh -Ep#q&\ /* U||GeEd **TestMethod.java =$fz</S=J */ KmTFJ,iM package NetFox; w"wW0uE^ b^Re947{g T7^;!;i`X public class TestMethod { `Z8k#z'bN <|jh3Hlp <r.QS[:h public TestMethod() owQ,op# { ///xx/weblogic60b2_win.exe IEMa/[n/ try{ -v.\W y~\ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); zh*D2/r //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); FK593z SiteFileFetch fileFetch = new SiteFileFetch(bean); f?51sr fileFetch.start(); dGn0-l'q } eqsmv[ catch(Exception e){e.printStackTrace ();} j~G(7t 3ie
k>'T RYjK4xT?Y/ } }b&lHr'Uw ?VmgM"'md mXOI"B9Sq public static void main(String[] args) XFvl { L_RVHvA=M/ new TestMethod(); jr? /wtw } ^2nrA pF } %,_ZVgh0 点击下载更多相关资料
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