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/* 2P]r J **SiteFileFetch.java `VS/Xyp */ Y%Saz+ package NetFox; Lo !kv* import java.io.*; 7j@TW%FmV\ import java.net.*; o 0fsM;K R2r0'Yx q`qbaX\J3 public class SiteFileFetch extends Thread { =NlAGzv!w RJSNniYr7 /dtFB5Z"w SiteInfoBean siteInfoBean = null; //文件信息Bean a}=)b#T` long[] nStartPos; //开始位置 B?Pu0
_|s long[] nEndPos; //结束位置 EpPKo FileSplitterFetch[] fileSplitterFetch; //子线程对象 0]5QX/I long nFileLength; //文件长度 Z}XA(;ck boolean bFirst = true; //是否第一次取文件 (Kx3:gs boolean bStop = false; //停止标志
5)mn File tmpFile; //文件下载的临时信息 )2:d8J\ DataOutputStream output; //输出到文件的输出流 fkYa y5oiH //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ?_ p3^kl public SiteFileFetch(SiteInfoBean bean) throws IOException C/lpSe { H!7/U_AH siteInfoBean = bean; R{Cj]:Ky //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); C
!uwD tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); a N_M if(tmpFile.exists ()) NO;+:0n { B6|=kl2C bFirst = false; Vbz$dpT read_nPos(); *n}{)Ef } >a]{q^0 else
X&(1DE { %m{h1UQQ+ nStartPos = new long[bean.getNSplitter()]; WG1x:,- nEndPos = new long[bean.getNSplitter()]; l? 7D0
} lKwI lp OBu$T& 'Kc;~a ~kF^0-JZY } (AV j_Cw
rfoLg @#;~_?$?C public void run() = q;ACW,z { $FS
j^v] //获得文件长度 ys09W+B7 //分割文件 ~
M@8O //实例FileSplitterFetch _18) XR //启动FileSplitterFetch线程 dd_n|x1 //等待子线程返回 i.6c;KU try{ k${25*M!3 if(bFirst) 0<nk>o { iCa#OQ nFileLength = getFileSize(); jIg]?4bW[ if(nFileLength == -1) @2Z{en? { T[q2quXgk System.err.println("File Length is not known!");
qN[U|3k } 08cCrG else if(nFileLength == -2) ioz4kG! { r m\] System.err.println("File is not access!"); _KLKa/3 } 8+^q9rLii else XeJn,= { K#tT \ for(int i=0;i<nStartPos.length;i++) z'j4^Xz?%$ { H
$XO]\ nStartPos = (long)(i*(nFileLength/nStartPos.length)); bRfac/:} } o4\\q66K for(int i=0;i<nEndPos.length-1;i++) S sGb; { 6|| zfH nEndPos = nStartPos[i+1]; k_/*>lIZY } 'de&9\ nEndPos[nEndPos.length-1] = nFileLength; K>N\U@@8i } 0EKi?vP@y7 } k`_sKr]9 ;M1# M: +9<"Y6 //启动子线程 $mgW|TBXCQ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ~5q1zr)E for(int i=0;i<nStartPos.length;i++) yX0nyhq { *%E4,(T fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Kejp7okb siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), wQEsq< nStartPos,nEndPos,i); d)1 d0ES Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); SFv'qDA fileSplitterFetch.start(); 3 f@@|vZF } |6v
$!wBi // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), A+de;& siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); @>cz$##` // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", UQc!"D nEndPos = " + nFileLength); FC@h6\+a // fileSplitterFetch[nPos.length-1].start(); ?(0=+o(` qILb># C3)*Mn3%P //等待子线程结束 xhK8Q //int count = 0; XXPn)kmWR //是否结束while循环 +saXN6 boolean breakWhile = false; ;-#2p^ G5vp(%j
FUzN}"\1 while(!bStop) t-B5,,` { \2)D
write_nPos(); n+MWny Utility.sleep(500); +fS<YT breakWhile = true; <-;/,uu ,cE yV74 `,QcOkvbC for(int i=0;i<nStartPos.length;i++) _t&`T { %e^GfZ if(!fileSplitterFetch.bDownOver) 0v+-yEkw { l0 =[MXM4 breakWhile = false; }@x!r=O)I break; mX 3p } >m]LV}">O } ;`Nh@*_ if(breakWhile) h?[|1.lJx( break; ~-R%m mC2K &'[ ~(nc<M[ //count++; 76H>ST@G| //if(count>4) 7-:R{&3Lm: // siteStop(); l^F ?^kP } dq,j?~ _} Yw] 7@ v{d$DZUs System.err.println("文件下载结束!");
J-#V_TzJ? } NNt
n catch(Exception e){e.printStackTrace ();} i/j53towe } CRBj> Z<^;Ybw{`Z w=pr?jt1: //获得文件长度 FFa =/XB" public long getFileSize() TZ *>MySiF { ]
# VHx int nFileLength = -1; @A4$k
dJ2 try{ <O5WY37"q URL url = new URL(siteInfoBean.getSSiteURL()); sSd/\Ap HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); w4(L@1 httpConnection.setRequestProperty("User-Agent","NetFox"); FA%_jM E\|nP~;~F9 +F-EgF+J int responseCode=httpConnection.getResponseCode(); t0+i]lr if(responseCode>=400) KL9k9|!p { Kci. ,I processErrorCode(responseCode); WQ{[q" O return -2; //-2 represent access is error `78Bv>[A } z/u^ 8N%nG(
0 W1 k]P. String sHeader; Z\?2"4H ;$WHTO( nl
qn:[BU for(int i=1;;i++) x-"8V( { 1W\E`)Z}] //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); m>%b4M //Utility.log(in.readLine()); !$A/.;0$ sHeader=httpConnection.getHeaderFieldKey(i); MB!9tju if(sHeader!=null) zcKQD )] { Q_U.J0 if(sHeader.equals("Content-Length")) baBBn%_V { W#S8 2 nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); l% T4:p4e break; RWc<CQcL" } Hs*["zFc } In?=$_p else ;I&VpAPx break; N ai5!_' } ?u|@,tQ[ } CJ*
D catch(IOException e){e.printStackTrace ();} _Z23lF9 catch(Exception e){e.printStackTrace ();} $c9-Q+pZ XEgJ7h_ >~SS^I0 Utility.log(nFileLength); r/2=
nE ZUHRATT- 7~SwNt, return nFileLength; `PC9t)%.pV } CmZayV L.Qz29\ CuWJai:nQ; //保存下载信息(文件指针位置) |@vkQ
private void write_nPos() CZ<T@k { HR}O:2' try{ DsejZ& output = new DataOutputStream(new FileOutputStream(tmpFile)); lG}#K^q output.writeInt(nStartPos.length); H/c
(m|KK for(int i=0;i<nStartPos.length;i++) -}#HaL#'K { hbJ>GSoZ, // output.writeLong(nPos); z5kAf~A output.writeLong(fileSplitterFetch.nStartPos); }5-w,m{8/ output.writeLong(fileSplitterFetch.nEndPos); nN\H'{Wzd } 9@lWI output.close(); KNUK]i&L } JVYH b 60Z catch(IOException e){e.printStackTrace ();} ;f=m+QXU catch(Exception e){e.printStackTrace ();} Ho>Np& } xWxc1tT` 9 3>4n\ HeOdCr-PN //读取保存的下载信息(文件指针位置) D5TDg\E private void read_nPos() c2y,zq|H { r3W3;L try{ K]hp-QK< DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); $"r9U|6kk int nCount = input.readInt(); )th[fUC( nStartPos = new long[nCount]; Q?#I{l)V( nEndPos = new long[nCount]; J;C:nE|V
for(int i=0;i<nStartPos.length;i++) uh)S;3| { >2'"}np* nStartPos = input.readLong(); w G %W{T$ nEndPos = input.readLong(); ;V
xRaj? } TmsIyDcD~ input.close(); cJ;Nh>ey } k, HC"?K catch(IOException e){e.printStackTrace ();} X2z<cJG|d@ catch(Exception e){e.printStackTrace ();} *.DC(2:o! } *yu}e)(0 0NXH449I= mQj=-\p private void processErrorCode(int nErrorCode) }yz>(Pq { V
~C$| +>e System.err.println("Error Code : " + nErrorCode); *\sPHz. } ;2p+i/sVj D|N4X`T`
.Q{RTp //停止文件下载 Bq q=2lj public void siteStop() an"&'D}U { Zh=arlk bStop = true; S#7YJ7
K"N for(int i=0;i<nStartPos.length;i++) 558P"w0"X fileSplitterFetch.splitterStop(); d$zJLgkA 4:`D3 \^x{NV@v42 } xN 1P# } O
G`8::S //负责部分文件的抓取 ]~({;;3o- **FileSplitterFetch.java m`/Nl< */ L*6'u17y package NetFox; rbZbj# @5Xo2}o-Q =V^-@ji)b import java.io.*; l8\UO<^fY import java.net.*; \|]mClj# N3%X>*' 2 !s&|lI public class FileSplitterFetch extends Thread { %rzPh<>e k }=<51c kZ40a\9
Ye String sURL; //File URL b 7UJ long nStartPos; //File Snippet Start Position z
p E| long nEndPos; //File Snippet End Position apvcWF% int nThreadID; //Thread's ID T] zEcx+e boolean bDownOver = false; //Downing is over %FO{:@CH boolean bStop = false; //Stop identical r|Ui1f5 FileAccessI fileAccessI = null; //File Access interface (}: s[cs P@{x@9kI b)LT[>f public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException L:z0cvn" { d1b]+A G4 this.sURL = sURL; ;cor\R this.nStartPos = nStart; =!q%
1 mP this.nEndPos = nEnd; |>.Q U3 nThreadID = id; oQ$yr^M fileAccessI = new FileAccessI(sName,nStartPos);//定位 p0+^wXi) } bSB%hFp=Cp SmRlZ!%e XYEwn_Y public void run() 6Sr]<I +: { fab'\|Y while(nStartPos < nEndPos && !bStop) 3H,E8>Vd { jvzioFCt W(, j2pU 3/G^V'Yu try{ }>A
q<1% URL url = new URL(sURL); ]<;,HGO HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); );5o13h2 httpConnection.setRequestProperty("User-Agent","NetFox"); $#Pxf String sProperty = "bytes="+nStartPos+"-"; ~>2uRjvkwB httpConnection.setRequestProperty("RANGE",sProperty); k3~9;Z Utility.log(sProperty); &m5zd$6 U7r8FL l E5k)~P`| InputStream input = httpConnection.getInputStream(); z _!ut //logResponseHead(httpConnection); TdtV ( swKkY`g 18X@0e byte[] b = new byte[1024]; g3R(,IH int nRead; ^Q6J$"Tj while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) N]<(cG&p { (3#PKfY+ nStartPos += fileAccessI.write(b,0,nRead); 5KCB^`|b>t //if(nThreadID == 1) &V"oJ}M/a // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); !X>u.}?g } e+
xQ\LH V Z(/g"9 YOCEEh? Utility.log("Thread " + nThreadID + " is over!"); $.G 7Vt bDownOver = true; 9U8M|W|d //nPos = fileAccessI.write (b,0,nRead); S,Y|;p<+^ } c}(WniR-" catch(Exception e){e.printStackTrace ();} *@U{[J } K,b
M9>} } 3DU1c?M: Ndmt$(b Z>[7#;; //打印回应的头信息 2*#|t: (c public void logResponseHead(HttpURLConnection con) f5jl$H. { +mQ5\14# for(int i=1;;i++) =L6#=7hcl { Bo 35L:r| String header=con.getHeaderFieldKey(i); L@}PW)# if(header!=null) 7)66e //responseHeaders.put(header,httpConnection.getHeaderField(header)); 0-2|(9
Kc Utility.log(header+" : "+con.getHeaderField(header)); b}e1JPk}! else h$cm:uks break; R4?>C-; } $a(-r-_Fi] } Zk3Pv0c sZ;|NAx) D6 B-#u!M public void splitterStop() mxc)Wm<4 { ys_2?uv bStop = true; Nw;qJ58@ } 1{}p_"s> U&?hG> SI (f&T( } |,8z"g -<iP$,bq72 @[GV0*yz$ /* 6j#JhcS+ **FileAccess.java d2\!tJm *//文件访问(定位,写) >{#JIG. package NetFox; %#6@PQ[R. import java.io.*; fFQ|dE;cF K$E3RB_F "oP^2|${ public class FileAccessI implements Serializable{ z;OYPGvkw Rr) 5[ //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 +WX/4_STV RandomAccessFile oSavedFile; }gp@0ri%5 long nPos; B(Sy.n [&x9<f6 `lhw*{3A public FileAccessI() throws IOException AGBV7Kk { G0FzXtu)q this("",0); %mI0*YRma } 'yo@5*x7 iFI74COam
#]#9Xq public FileAccessI(String sName,long nPos) throws IOException x*7@b8J { Q>niJ'7WF oSavedFile = new RandomAccessFile(sName,"rw"); j,IRUx13f this.nPos = nPos; Hv,|XE@Y oSavedFile.seek(nPos); Ufr@j` * } ~.a"jYb7A} ggso9ZlLu+ WBe0^=x public synchronized int write(byte[] b,int nStart,int nLen) 4GYi' { 1 ZdB6U0 int n = -1; %6K7uvTq try{ t)SZ2G1r oSavedFile.write(b,nStart,nLen); |IxHtg3>6{ n = nLen; OL'Ito } P.~UUS catch(IOException e) =8FvkNr { W4$o\yA] e.printStackTrace (); n#_B4UqW% } u{1R=ML Ky3mzw| 2& Q\W return n; WMbkKC.{J } qF)J#$4;6 u?').c4 awLvLkQb{ } pEyZH!W I&PJ[U#~a [4KQcmJc# /* u@a){A(P **SiteInfoBean.java y\Wn:RR1 [ */ _H] \ package NetFox; @T1G#[C~t
"Ih3 UpoSC public class SiteInfoBean { -@Ap;,= GwWK'F'2 d0J/"< private String sSiteURL; //Site's URL B-I4(w($ private String sFilePath; //Saved File's Path .)E#*kLWR private String sFileName; //Saved File's Name L!f~Am:# private int nSplitter; //Count of Splited Downloading File vHaM yA- Bfb~<rs[ .1QGNW public SiteInfoBean() ,0'GHQWz$ {//nSplitter的缺省值为5 %G?@Hye3 //default value of nSplitter is 5 gC7!cn this("","","",5); `Fqth^RK?p } G':3U 5Ds[? [@$ SLl^Y public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) ]:%DDlRb { ?G{0{c2 sSiteURL= sURL; >t+ ENYb sFilePath = sPath; &61U1"&$ R sFileName = sName; lZzW-
%K this.nSplitter = nSpiltter; )@]%:m!ER 7w
)?s@CD d<c 29Y }
Omd; ss^a=?~ .G/Rh92 public String getSSiteURL() ~ !uX"F8Xl { +.cpZqWn3 return sSiteURL; }n)0}U5;0 } fy+5i^{= g-3^</_fZ +'F;\E public void setSSiteURL(String value) Ir;JYY!0? { Lg4|6.Ez|P sSiteURL = value; /R&`]9].s } !Uiq3s`1T ?XKX&ws O:BdZ5
b public String getSFilePath() qI'pjTMDY { (Jp~=6&lKf return sFilePath; @ZEBtM%.O } =DwLNyjU4 YNr5*P1 N:G]wsh public void setSFilePath(String value) 082}=Tsx { Xj, %t} sFilePath = value; We6eAP /Z } ED0cnr\yG :.PA(97xb V#G)w~
public String getSFileName() <4{m99 { z|s(D<*w return sFileName; WcmX"{ } ^y,h0?Z9 aEf3hB* ~ fW= N public void setSFileName(String value) p22AH%
{ Q#MB=:0{ sFileName = value; LhG\)>Y% } {S0-y av'DyNW\ ~[=<Os public int getNSplitter() S1|5+PPs { $f@YQN= return nSplitter; ?N4FB*x } zJXK:/ 2poo@]M/ }u#3 hYa public void setNSplitter(int nCount) Jp jHbG { d&3"?2IQ nSplitter = nCount; [aSuEu?mC } @x `X|>& } y;o - @] 2ZxhV4\ 1zRYd`IPoq /* [%k8l~ 6 **Utility.java si&du */ #WjQ'c: package NetFox; $ :I{
?j&hG|W9<z <zCWLj3 public class Utility { 9!Av sC9 _l{~O
|GMo"[ public Utility() G=y~)B} { }NDl~5 2G.y.#W _DxHJl } cs6oD!h ti61&)( //线程睡眠 0"7+;(\1Rk public static void sleep(int nSecond) 2hV -h { ?|,:;^2l1 try{ :uo)-9_ Thread.sleep(nSecond); =`x }9|[ } /mwUDf 6x catch(Exception e) b |:Y3_> { "{8j!+]4i e.printStackTrace (); JuZkE9C,${ } Mbc&))A } -sJ1q^;f@ !aSj1
2J //日志 Oj-\ public static void log(String sMsg) ?Uq"zq { ;6 @sC[ System.err.println(sMsg); HGAi2+& } s(py7{ ^K 'goKYl#1Q {|>'(iqH"w public static void log(int sMsg) +yI$4MY { Muwlehuq System.err.println(sMsg); C u` } # fqrZ9:@ } TG;[,oa Q
z(n41@` kNK0KL /* A6[FH\f **TestMethod.java 3IRur,|' */ /"J 6``MV package NetFox; NCh-BinK@ ;8oe-xS\+ X$KTsG* public class TestMethod { %|JiFDjp JPF6zzl) *rTg>) public TestMethod() &|Wqzdo?# { ///xx/weblogic60b2_win.exe tN<X3$aN try{ /=YNkw5 SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); "gy&eR> //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); cFc(HADM`r SiteFileFetch fileFetch = new SiteFileFetch(bean); (rFiHv5 fileFetch.start(); 6D
Xja_lp } S'5 )K catch(Exception e){e.printStackTrace ();} /e"iYF WzstO}?P( ,KJHY m=Q } ^mn!;nu 0GxJja ;N#}3lpLqg public static void main(String[] args) g"748LY>=p { T; tY7;< new TestMethod(); N& } 7;|"1H:cmw } >3p~>;9sc 点击下载更多相关资料
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