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/* hfWFD, **SiteFileFetch.java r,1e 'd: */ y046:@v( package NetFox; "SxLN
8.: import java.io.*; pKUP2m`MW import java.net.*; K5>p89mZ 2}6%qgnT- l |2D/K5 public class SiteFileFetch extends Thread { SLL3v,P(7 /1UOT\8U #6v27:XK SiteInfoBean siteInfoBean = null; //文件信息Bean 'dG%oDHX]P long[] nStartPos; //开始位置 ]}="m2S3 long[] nEndPos; //结束位置 2F{hg% FileSplitterFetch[] fileSplitterFetch; //子线程对象 gV;H6" long nFileLength; //文件长度 Uu
s. boolean bFirst = true; //是否第一次取文件 /^SAC%PD boolean bStop = false; //停止标志 !|hoYU>@2L File tmpFile; //文件下载的临时信息 "I6P=]|b DataOutputStream output; //输出到文件的输出流 /*FH:T<V uA tV". //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) d[^KL;b?6 public SiteFileFetch(SiteInfoBean bean) throws IOException z4%uN|V { C$h<Wt=< siteInfoBean = bean; yOU(2"8p //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 2jJmE&)7, tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); s9;#!7ms if(tmpFile.exists ()) tc;'oMUP { Qj{8?lew bFirst = false; {PP9$>4`l read_nPos(); Yf,K#' h: } f
3V Dv9( else z
/KK)u(q { 5^<h}u9 nStartPos = new long[bean.getNSplitter()]; !l?.5Pm]) nEndPos = new long[bean.getNSplitter()]; (/d5UIM{& } 94uNI8 }"vW4 vy2Q g
V]OmfPve } -Xu.1S z<sg0K8z63 *K!|@h{60 public void run() /n~\\9#3 { -C-?`R //获得文件长度 :bV mgLgG //分割文件 EF7+ *Q9 //实例FileSplitterFetch {^mNJ //启动FileSplitterFetch线程 z?/1Kj}xG //等待子线程返回 {e[%;W%c& try{ =!O*/6rz if(bFirst) sIG7S"k>p { Y?CCD4"qn nFileLength = getFileSize(); uzmk6G
v if(nFileLength == -1) ]w T 7*( Y { S:4crI System.err.println("File Length is not known!"); WG*t::NN } Q?ahr~qo else if(nFileLength == -2) B[=(#W { 4a0:2 kIKa System.err.println("File is not access!"); [${
QzO } MObt,[^W else 'j^xbikr { ]V %.I_ for(int i=0;i<nStartPos.length;i++) WARb"8Kg { \P} p5k[ nStartPos = (long)(i*(nFileLength/nStartPos.length)); H1<>NWm!v7 } 3~,d+P for(int i=0;i<nEndPos.length-1;i++) ]-oJ[5cQ0v { mK+IEZV<3 nEndPos = nStartPos[i+1]; {FRAv(,\ } XBd>tdEP nEndPos[nEndPos.length-1] = nFileLength; [b%:.bjY } B\J^=W+` } V@>r*7\F GRb*EeT ur
:i)~wXn //启动子线程 \k;`}3uO fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; V/cP4{L for(int i=0;i<nStartPos.length;i++) &PkLp4mQ { }kw/W#)J fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), A+y siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 7g
R@$(1Z nStartPos,nEndPos,i); ,yd
MU\so( Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); >fH=DOz$& fileSplitterFetch.start(); V.os } ^w ] / // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), `:P
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); [:xiZ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 91Uj}n% nEndPos = " + nFileLength); .sQ=;w/ZA // fileSplitterFetch[nPos.length-1].start(); GN KF&M ? uYu`Ojzr *x)Ozfe //等待子线程结束 TKk-;Y=N //int count = 0; jTLSdul+ //是否结束while循环 +C1QY'>I boolean breakWhile = false; !LkWzn3 )c l5B{1P {R/C0-Q^^ while(!bStop) 8q1wHZ { gN)c write_nPos(); 5K|"\ Utility.sleep(500); `%09xMPu breakWhile = true; 5 H#W[^s" {.yStB.T `R"I;qV for(int i=0;i<nStartPos.length;i++) 1 sPdz
L { -s9P8W if(!fileSplitterFetch.bDownOver) Rb(SBa { ^
wY[3"{ breakWhile = false; C>[Uvc break; %cE2s` } S(\9T1DVe } .S(,o. if(breakWhile) u_7~TE3W break; 3Vp#a: ho>k$s? SZJ$w-<z //count++; ?|:BuHkT //if(count>4) G;f/Tch // siteStop(); = waA`Id } P ~PIMkt Jvun?J
m L28*1]\Jh System.err.println("文件下载结束!"); J[^}u_z } E9V5$ catch(Exception e){e.printStackTrace ();} *m2=/Sh } D1nq2GwS 1xv8gC:6 lC=~$c: //获得文件长度 H5D*|42 public long getFileSize() JoSJH35=: { eHDef int nFileLength = -1; p _d:eZ try{ erO>1 ,4S URL url = new URL(siteInfoBean.getSSiteURL()); GWvH[0 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 9}z0J httpConnection.setRequestProperty("User-Agent","NetFox"); L. ]$6Q0 &sF^Fgg{ r!,}Z=cGe int responseCode=httpConnection.getResponseCode(); s&GJW@
| if(responseCode>=400) udeoW-_ { i|1^+; processErrorCode(responseCode);
xG;-bJu return -2; //-2 represent access is error D/h/Y) Y } Jjl`_X$CB '_b.\_s-d /*|oL#hK String sHeader; uIU5.\"s #2iD'>bQ |a{Q0: for(int i=1;;i++) t#!yrQ..'G { :a:l
j //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); K!,<7[MBg //Utility.log(in.readLine()); I7^zU3]Ul sHeader=httpConnection.getHeaderFieldKey(i); zS]8V?` if(sHeader!=null) XR!us/U`a { 'H7x L if(sHeader.equals("Content-Length")) `-3o+ID\ { ){r2T1+-% nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); Ma|qHg break; OxGE%R, } .Yw'oYnS } F ]O$(7* else FYS/##r break; /s];{m|>
} moVbw`T } 81*M= ? catch(IOException e){e.printStackTrace ();} ~SvC[+t+U catch(Exception e){e.printStackTrace ();} 5Zw1y@k( %6--}bY^ p\{-t84n Utility.log(nFileLength); bqQq=SO OCy0#aPRS BnRN;bu return nFileLength; E\m5%bK\B } M,}|tsL . @Ut?G -YD+(c`l //保存下载信息(文件指针位置) lO:.OZu private void write_nPos() Z0De!?ALV\ { 2DD:~Tbi try{ R}mn*h6 output = new DataOutputStream(new FileOutputStream(tmpFile)); ^s.V;R output.writeInt(nStartPos.length); mZIoaF>t for(int i=0;i<nStartPos.length;i++) n&MG7`]N { Z!0]/ mCE8 // output.writeLong(nPos); lcV<MDS output.writeLong(fileSplitterFetch.nStartPos); ET];%~ ^ output.writeLong(fileSplitterFetch.nEndPos); &uUo3qXQ5l } kF7V.m/~o output.close(); mJB2)^33a } |w}xl'>q catch(IOException e){e.printStackTrace ();} _tr<}PnZ catch(Exception e){e.printStackTrace ();} U}SXJH&&E } a(]`F(L XBQ\_2> #"fJa:IYG7 //读取保存的下载信息(文件指针位置) ob_I]~^I?| private void read_nPos() g]UBZ33y { ^TB>.c@ `* try{ Q
!qrNa6 DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); B^D(5 int nCount = input.readInt(); 9z?oB&5 nStartPos = new long[nCount]; q %A?V_ nEndPos = new long[nCount]; )5fQ$<(Z for(int i=0;i<nStartPos.length;i++) HyiFy7j { #}^-C&~ nStartPos = input.readLong(); 6mH/ m& nEndPos = input.readLong(); 4x%(9_8{- } kX:tc input.close(); n]+W 3[i } ^w~23g. catch(IOException e){e.printStackTrace ();} u9=SpgB# catch(Exception e){e.printStackTrace ();} YC]L)eafo` } H;aYiy |+ge8uu?C 9x+<Ik private void processErrorCode(int nErrorCode) qC!&x,}3 { 6a}"6d/sTL System.err.println("Error Code : " + nErrorCode); $>U#
W: } TO,rxf `IINq{Zk ENh!N4vbO //停止文件下载 @xsCXCRWVV public void siteStop() Z['\61 { M\b")Tu{0 bStop = true;
QH]M for(int i=0;i<nStartPos.length;i++) ~tB;@e fileSplitterFetch.splitterStop(); .ut{,(5 j<%])
2fIRlrA$ } (eCFWmO } ECa$vvK
m //负责部分文件的抓取 9s
+z B **FileSplitterFetch.java hgRVwX */ {J/I-=CmML package NetFox; vFrt|JC_{ z<gu00U7
t4Z import java.io.*;
O?EB8RB import java.net.*; 4\.V +&KQ28r -G
&_^"=R public class FileSplitterFetch extends Thread { HEqWoV]{d /W#O + 3>z[PPw String sURL; //File URL RnfXN)+P long nStartPos; //File Snippet Start Position +kdySWF long nEndPos; //File Snippet End Position mxSKG>
O int nThreadID; //Thread's ID o-7>eE}+ boolean bDownOver = false; //Downing is over ngulc v boolean bStop = false; //Stop identical iNCX:Y FileAccessI fileAccessI = null; //File Access interface *0Gz)' v}J;ZIb i54md$Q^ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ^C&+
~+ { p<WFqLe(": this.sURL = sURL; 7=4 A;Ybq this.nStartPos = nStart; FDFH,J`_ this.nEndPos = nEnd; RaSz>-3d nThreadID = id; !/K8xD$ fileAccessI = new FileAccessI(sName,nStartPos);//定位 :<#`_K~' } gM;}#>6 ~$O1`IT 09M;}4ev&7 public void run() o7&4G$FX~ { Jeqxspn
T while(nStartPos < nEndPos && !bStop) %>Xr5<$:& { -U2mfW /7$mxtB5%L 47 u@4"M try{ &;H{cv` URL url = new URL(sURL); Iy
{U'a! HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ZeasYSo4P httpConnection.setRequestProperty("User-Agent","NetFox"); $7I]`Jt String sProperty = "bytes="+nStartPos+"-"; 5T4"j;_.BL httpConnection.setRequestProperty("RANGE",sProperty); sc`"P-J+vp Utility.log(sProperty); {gf>* e{G_GycH PX".Km p. InputStream input = httpConnection.getInputStream(); ApPy]IdwX //logResponseHead(httpConnection); QL"gWr`R D_|B2gdZY hQJWKAf,/ byte[] b = new byte[1024]; >Pe:I int nRead; P#GD?FUc while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) AZFWuPJo { >e5zrgV nStartPos += fileAccessI.write(b,0,nRead); Q 882B1H //if(nThreadID == 1) r
-f // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); d+z[\i } urY`^lX~ o%(bQV-T /L)
9tt. Utility.log("Thread " + nThreadID + " is over!"); MQcE6) bDownOver = true; 5{>0eFzG //nPos = fileAccessI.write (b,0,nRead); 6X+}>qy } 67<CbQZoN3 catch(Exception e){e.printStackTrace ();} J;~|ph } (b/d0HCND } MM#cLw &jts:^N> #dJ 2Q_2 //打印回应的头信息 _=`x])mM public void logResponseHead(HttpURLConnection con)
AvRcS]@= { Pw}_[[>$ for(int i=1;;i++) [J\DB)V/ { +h[e0J|v{ String header=con.getHeaderFieldKey(i); p?rK`$U+J if(header!=null) cV$lobqO //responseHeaders.put(header,httpConnection.getHeaderField(header)); L@|#Bbmx Utility.log(header+" : "+con.getHeaderField(header)); y{rn-?`{ else C@dGWAG break; F%6*Df;cSe } #0MK(Ut/ } qR,.W/eS8 *M!kA65' `ENP=kL(+ public void splitterStop() ./maY1>T { 9EgP9up{6! bStop = true; {Qtq7q. } jW5iqU"{* +BB0wY eYP=T+ } ]UUI~sFE dt-K QJ<[Zx /* n! .2aq **FileAccess.java t!l%/$- *//文件访问(定位,写) :4;S"p package NetFox; u7k|7e=xk
import java.io.*; Jirct,k 4]6 Qr me. /o(!? public class FileAccessI implements Serializable{ 2,AaP*, D3?N<9g //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 Qyj(L[K J RandomAccessFile oSavedFile; .w'vD/q; long nPos; R`He^ _@prmSc /_OOPt=G public FileAccessI() throws IOException $Xt;A&l2? { )Xno|$b5Eo this("",0); k}BDA|\s } ]bfqcmh< N$'>XtO b[g.}'^yht public FileAccessI(String sName,long nPos) throws IOException {,f[r*{Y { P3$,ca' oSavedFile = new RandomAccessFile(sName,"rw"); G]lvHD this.nPos = nPos; :ej_D} oSavedFile.seek(nPos); AP@<r } 3i(J on/p uu3M{*} _<u;4RO(s public synchronized int write(byte[] b,int nStart,int nLen) >-<F) { Yq0# #__ int n = -1; X8b#[40: try{ {bTeAfbf] oSavedFile.write(b,nStart,nLen); n#>5?W n = nLen; `cO|RhD@ } *aG"+c6| catch(IOException e) *:#Z+7x
] { Qu}N:P9l?X e.printStackTrace (); %]GV+!3S } )OUU]MUH c! ~T2t e?vj+ZlS$f return n; b]K>vhQV } WY.5K
=} U3VT*nj' S>EDL } JX&~y.F ;Xh5oB\)W [0(mFMC` /* cyb(\ fsC **SiteInfoBean.java \>;%Ji */ j]4,6`b\ package NetFox; S~|tfJpL D2?S,9+E_ iPkT*Cl8 public class SiteInfoBean { qzlER t[j9R#02? 2$DSBQEx private String sSiteURL; //Site's URL 5*XH6g F private String sFilePath; //Saved File's Path _Ff".t<" private String sFileName; //Saved File's Name 7?"9J`* private int nSplitter; //Count of Splited Downloading File ]0YDb~UB 9/Wn!Ld hOn public SiteInfoBean() h{H]xe[Q {//nSplitter的缺省值为5 ax]9QrA //default value of nSplitter is 5 K
/ZHJkJ7 this("","","",5); }
Ab_o#Zy } 6>lW5U^yA\ 'F<Sf:?.p 5E.vje{U; public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) gQ,4xTX { No~6s.H sSiteURL= sURL; =ty2_6&> sFilePath = sPath; K]MzP|T, sFileName = sName; Uk|9@Auav this.nSplitter = nSpiltter; hvL6zCi :^.u-bHI b8e*Pv/ } N&,"kRFFo {~"Em'}J YiO3<}Uf public String getSSiteURL() U#$:\fT { tB!|p 6 return sSiteURL; gvK"*aIj } ^:U;rHY g.=!3e&z% 6iyt2qkh public void setSSiteURL(String value)
Jb6& { H'']J9O sSiteURL = value; Mi;Tn;3er } :g/{(#E@Z {YfYIt=. 2t.fD@ public String getSFilePath()
TiTYs { 5%#i79z&B return sFilePath; +
p'\(Z( } @}Pw0vC s?HsUD$b r@;$V_I public void setSFilePath(String value) %va[jJ { U<|B7t4M sFilePath = value; "hfw9Qm } FmR\`yY_, lej^gxj/2 })q]gMj public String getSFileName() )~G8 L Z { \:C%>
.VG return sFileName; rC~_:uXtE } "_Zh5
g mJ/^BT] QK,=5~I J public void setSFileName(String value) C?bXrG\ { m2wp m_vV# sFileName = value; 5NFq7&rJ6 } '\4c "Ho n2H&t>N t%
<pbZO public int getNSplitter() 5BZ+b_A>VV { EwC5[bRjUp return nSplitter; }`?7\\6 } JHHb | #V,LNX) 9{T 8M public void setNSplitter(int nCount) E`U&Z { u87=q^$ nSplitter = nCount; rGGS]^ }
uT#Acg } oXvdR(Sb^ ik8|9m4/ 9$n+-GSK /* 7O]J^H+7 **Utility.java "Wxo[I */ 1*TXDo_T package NetFox; -wJ ccIDMJ=2 6hR^qdHg public class Utility { '3IkPy1Uz Cln^ 1N0 <aD'$(N5 public Utility() jt0H5-x { pW`ntE#L xzuPie\ gF$1wV]e } !k4 }v'= 0-6:AHix //线程睡眠 SjFF=ib public static void sleep(int nSecond) qQwJJjf { y^5T/M try{ Zb12:? Thread.sleep(nSecond); 8ct+?-3g } oSpi{ $x catch(Exception e) oFX"F0rx { }(8D!XgWa e.printStackTrace (); z7D*z8,i } OaX HJ^k } \65vfE~ O f$~ _FX //日志 {ILp[&sL public static void log(String sMsg) \HBVNBY { !3O,DhH>MC System.err.println(sMsg); /F\>Z] } ){?mKB5 u?LW+o ez{P-qB public static void log(int sMsg) Lg\8NtP { #RCZA4> System.err.println(sMsg); gPF}aaB6 } U^vUdM" } tg4LE?nv V'Sd[* t?pIE cl /* Z1XUYe62 **TestMethod.java R !:eYoQ */ OqAh4qa,$ package NetFox; m70`{-O
hg<"Yg= yf0vR%,\ public class TestMethod { 5i}CzA96 cKvAR5| \;A50U|r public TestMethod() # CP9^R S { ///xx/weblogic60b2_win.exe 7UeE(=Hr5 try{ uD0(aqAZ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); 1Xk{(G<\ //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); c+)36/; X SiteFileFetch fileFetch = new SiteFileFetch(bean); kMfc"JXF fileFetch.start(); dXf]G6 } OX#eLco catch(Exception e){e.printStackTrace ();} o(v"?Y 6 &etL&s v =!I8vQ> } u&?yPR b<29wL1 F``EARG)iu public static void main(String[] args) I{*.htt{ { 0{^l2?mgSb new TestMethod(); Q{ |+3!!' } -$sl!%HO% } K#m\qitb 点击下载更多相关资料
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