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/* g#(+:^3' **SiteFileFetch.java =cRmaD */ 2Pb+/1*ix package NetFox; kk5&lak2V import java.io.*; }"+"nf5h import java.net.*; h GA2.{ T[4xt,[a (A=PDjP! public class SiteFileFetch extends Thread { EY]H*WJJ *
1}dk`- =x+1A)Q SiteInfoBean siteInfoBean = null; //文件信息Bean YC;@ ^ long[] nStartPos; //开始位置 \JPMGcL long[] nEndPos; //结束位置 a=$ZM4Bn FileSplitterFetch[] fileSplitterFetch; //子线程对象 xDeM7L' long nFileLength; //文件长度 }V]*FCpQ boolean bFirst = true; //是否第一次取文件 8b0j rt boolean bStop = false; //停止标志 ?5't1219 File tmpFile; //文件下载的临时信息 MR|A_e^x DataOutputStream output; //输出到文件的输出流 t,LK92? &n,v@
gt //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 0`zdj public SiteFileFetch(SiteInfoBean bean) throws IOException oi`L ;w|] { BcQUD?LC` siteInfoBean = bean; 4U\>TFO //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); W'"hjQ_ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); uPl7u1c if(tmpFile.exists ()) m>+ { x
.@O]}UH bFirst = false; K
'I6iCrD read_nPos(); xJw"
8V< } 64b AWHv else 1PxRj { [;hkT nStartPos = new long[bean.getNSplitter()]; rXmrT%7k nEndPos = new long[bean.getNSplitter()]; 0#GnmH } b)a5LFt| ]2L11"erP L+ew/I>: q5Zu'-Cx@ } 6Z1O:Bou `yq)
y>_ pS-o*!\C. public void run() r;b `@
. { Y->sJm //获得文件长度 gna!Q //分割文件 q=e;P;u //实例FileSplitterFetch =P,mix| //启动FileSplitterFetch线程 q2|x$5 //等待子线程返回 t ^>07#z try{ u gRyUny if(bFirst) Q~"Lyy8 { /Q W^v;^ nFileLength = getFileSize(); SeZ+&d if(nFileLength == -1) $'}| /D { Q65M(x+oy System.err.println("File Length is not known!"); 7h(
} )+v5H else if(nFileLength == -2) %@(+`CCA { _!|$ i System.err.println("File is not access!"); t{UWb~" } 2@T0QJ else qPi $kecx { _[8JSw7 for(int i=0;i<nStartPos.length;i++) ~YNzSkz { qm#?DSLap nStartPos = (long)(i*(nFileLength/nStartPos.length)); zt]8F)l@ } p\I3 fI0i for(int i=0;i<nEndPos.length-1;i++) _`C|K>: { ?mV2|; nEndPos = nStartPos[i+1]; rp
@%0/[ } fFC9:9< nEndPos[nEndPos.length-1] = nFileLength; _@?I)4n| } LDw.2E
} y+wy<[u k^JgCC+ Gn6\n'r0 //启动子线程 q~18JB4WPJ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 7^)yo#i4 for(int i=0;i<nStartPos.length;i++) rY&lx} { 6_8y Q fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), U4a8z<l$ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), kyJKai nStartPos,nEndPos,i); p? +!*BZ Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ZQR)k:k7 fileSplitterFetch.start(); A$~H`W<yxB } i+Ne.h // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), q}'<[Wg siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); <b4}
B // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", _;x` 6LM nEndPos = " + nFileLength); f[`&3+ // fileSplitterFetch[nPos.length-1].start(); ~6u|@pnI cWQ &zc ;eFV}DWW //等待子线程结束 zb~;<:< //int count = 0; Tz:,l$ //是否结束while循环 .1h\r,
# boolean breakWhile = false; 4y.'O Z 5wDf+ @d5t%V\ while(!bStop) BVv-1$ U^ { o|n+;h
write_nPos(); 7
mA3&<&q Utility.sleep(500); ~s?y[yy6i breakWhile = true; DjZTr}%q blG?("0! I8W9Kzf for(int i=0;i<nStartPos.length;i++) :[PA .Upi { hOqNZ66{ if(!fileSplitterFetch.bDownOver) v!S(T];) { lS2`#l > breakWhile = false; `LwZ(M-hI break; %0u5d$b q } bLggh]Fh } Mu" vj*F if(breakWhile) <X5V]f break; _s=<Y^l%x /K,@{__JP |e+r~).4B //count++; T/%k1Hsa4H //if(count>4) kDiR2K& // siteStop(); sBxCi~ } )DW".c *xeJ4h ]G!
APE System.err.println("文件下载结束!"); kmJ<AnK } tsB}'+!v# catch(Exception e){e.printStackTrace ();} g]b%<DJ } 21?>rezJ pXNH aO:A pOAO //获得文件长度 xy)W_~Mk public long getFileSize() +miL naO~L { '7]9q#{su int nFileLength = -1; 5 "x1Pln try{ >G0ihhVt URL url = new URL(siteInfoBean.getSSiteURL()); ]VN1Y) HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); =*?XZA)c httpConnection.setRequestProperty("User-Agent","NetFox"); nwDW<J{f|U c)QOgXv Z 2uU'T int responseCode=httpConnection.getResponseCode(); "LZv\c~v,% if(responseCode>=400) 3\B~`=*q/ { `1
Tg8 processErrorCode(responseCode); }V+&o\4 return -2; //-2 represent access is error _=qk.| p/ } m}m|(;T {X\FS |z)7XK String sHeader; O4W2X@ XQ Si X=k|SayE8 for(int i=1;;i++) X*r?@uK5 { /5XdZu6k`h //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 0NSCeq%;6q //Utility.log(in.readLine()); %)r1?H} #% sHeader=httpConnection.getHeaderFieldKey(i); i?F~]8 if(sHeader!=null) mndNkK5o { H//,qxDc if(sHeader.equals("Content-Length")) 4d-"kx3X { 6A} 45 nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); y|#Fu break; `]2y=f<{X } x1`Jlzrp, } j+3=&PkA.] else )5U7w break; ; JHf0 } e5sQl1 } CakB`q(8 catch(IOException e){e.printStackTrace ();} {<Vw55)#0Q catch(Exception e){e.printStackTrace ();} h`:gMhn }4*~*NoQ ,xC@@>f Utility.log(nFileLength); =NL(L 3{-
8n/4
k 9\R+g5 return nFileLength; v$|cF'yyF= } bO gVCg 2MKB(;k 9C1\?)"D^e //保存下载信息(文件指针位置) ]*AQT7PH private void write_nPos() !2g*=oY { yKOC1( ~ try{ NFb<fD[C output = new DataOutputStream(new FileOutputStream(tmpFile)); %t,Fxj4F output.writeInt(nStartPos.length); AhSN'gWpbF for(int i=0;i<nStartPos.length;i++) &;%LTF@I, { E"Y[k8-:2/ // output.writeLong(nPos); Ivc/g, output.writeLong(fileSplitterFetch.nStartPos); sMWNzt output.writeLong(fileSplitterFetch.nEndPos); y)+lU } h!]=)7x; output.close(); i}LVBx"K( } $%3%&+z$I catch(IOException e){e.printStackTrace ();} ,y*|f0&"~ catch(Exception e){e.printStackTrace ();} $[*<e~? } DqBiBH[%h mp>Ne6\Tu ,A!0:+ //读取保存的下载信息(文件指针位置) 8}!WJ2[R private void read_nPos() 'di(5 { Eg#WR&Uq" try{ ksli-Px DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ^/$bd4,z int nCount = input.readInt(); kt hy9<!$ nStartPos = new long[nCount]; m2PI^?|e nEndPos = new long[nCount]; `9p;LZC1 K for(int i=0;i<nStartPos.length;i++) a.s5>:Ct { g,5Tr_ nStartPos = input.readLong(); zM|Y
X< nEndPos = input.readLong(); sb*)K,U } =E-V-?N\ input.close(); ]9NA3U7F } 6n$g73u<=3 catch(IOException e){e.printStackTrace ();} ~~3 BV, catch(Exception e){e.printStackTrace ();} xEqr3( } :PDyc(s{ E(Y}*.\]#s XlU`jv+ private void processErrorCode(int nErrorCode) 77p8|63 { p u6@X7W" System.err.println("Error Code : " + nErrorCode); pK@8= + }
i}r|Zo ORo,.#< (<xl _L:*. //停止文件下载 xr1,D5 public void siteStop() TKZ[H$Z { W(,3j{d2i bStop = true; _T.k/a for(int i=0;i<nStartPos.length;i++) 5}"9)LT@@w fileSplitterFetch.splitterStop(); EHX/XM @PyZ u7' |#`qP^E } me&'BQ }
{Z(kzJwN //负责部分文件的抓取 :c`Gh< u **FileSplitterFetch.java vAjvW&'g */ (E]q>'X package NetFox; ~~X-$rtU i5jsM\1j [^2c9K^NK import java.io.*; 0hM!#BU5K import java.net.*; R>n=_C ($r-&]y Ipyr+7/zJ public class FileSplitterFetch extends Thread { Ud'/
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G1nY i9j#Tu93 f String sURL; //File URL .h[yw$z6 long nStartPos; //File Snippet Start Position LF\HmKM, long nEndPos; //File Snippet End Position bOS; 1~~ int nThreadID; //Thread's ID X6SWcJtSw boolean bDownOver = false; //Downing is over J>p6')Y6~ boolean bStop = false; //Stop identical ;dZuO[4\ FileAccessI fileAccessI = null; //File Access interface B
42t B0|!s 'nSo0cyQ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException rki0! P` { }*s`R;B|, this.sURL = sURL; w0`8el; this.nStartPos = nStart; #l#8-m8g) this.nEndPos = nEnd; K:(E"d; nThreadID = id; $bsD'Io fileAccessI = new FileAccessI(sName,nStartPos);//定位 S>V+IKW;( } I> BGp4 AQ T?HW=v_a }YCpd )@ public void run() 0<#>LWaM_ { GYwU3`{ while(nStartPos < nEndPos && !bStop) jcL%_of { +Fa!<txn ^c| _%/ &r)[6a$fW try{ Yh2[
nF_ URL url = new URL(sURL); G[$g-NU+ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); v,^W& W. httpConnection.setRequestProperty("User-Agent","NetFox"); Z|$M 9E String sProperty = "bytes="+nStartPos+"-"; x
?24oO httpConnection.setRequestProperty("RANGE",sProperty); 1U6z2i+y Utility.log(sProperty); _kXq0~ K$/&C:,Q &$g{i:)Z InputStream input = httpConnection.getInputStream(); ;7E
c'nC4 //logResponseHead(httpConnection); 2xK v; V;29ieE! 3>QkO.b byte[] b = new byte[1024]; w?:tce int nRead; @A'@%Zv- while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 'M!M$<j { Lz{z~xNHW. nStartPos += fileAccessI.write(b,0,nRead); aI;-NnC //if(nThreadID == 1) h5<eU;Rw+ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); G4]( !f!Kv } K*S3{s%UR #g= z}w7X6&e Utility.log("Thread " + nThreadID + " is over!"); #pcgfVl bDownOver = true; W`v$-o- //nPos = fileAccessI.write (b,0,nRead); @8*lqV2 } #+#^cqjZ catch(Exception e){e.printStackTrace ();} AF\Jh+ynT! } 0TWd.+ } g5:?O,? 'S%H"W\ {hFH6]TA //打印回应的头信息 $Da?)Hz'F public void logResponseHead(HttpURLConnection con) y#zO1Nig` { Z5|BwM for(int i=1;;i++) i936+[ { V:h7}T95 String header=con.getHeaderFieldKey(i); O',Vce$ if(header!=null) LyH1tF //responseHeaders.put(header,httpConnection.getHeaderField(header)); !|Wf
mU Utility.log(header+" : "+con.getHeaderField(header)); ;2 P else }`.d4mm break; &EmG\vfE } {B-*w%}HU } IGNU_w4j )$ M2+_c LhRd0
public void splitterStop() Swr4De_5 { Z C<+BKS bStop = true; G>Hg0u0!, } $b(CN+# rCUGaf~ nF
B]#LLv } MXiQWg$ dTjDVq&Hz 9y&bKB2, /* J6Vx7 **FileAccess.java s'|t2`K(" *//文件访问(定位,写) F?^L^N^ package NetFox; :gO5#HIm import java.io.*; />6ECT &~=r .T .cm2L,1h public class FileAccessI implements Serializable{ "VDMO^ Al=ByX @ //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 B"8jEYT5 RandomAccessFile oSavedFile; -9::M}^2 long nPos; k%BU&%?1 .,20_<j%= #q4uS~ public FileAccessI() throws IOException df!i}L { ^t:dcY7 this("",0); TJ1h[ } PV:J>!] >n^780S| U*b7 Pxq; public FileAccessI(String sName,long nPos) throws IOException Z?xRSi2~7 { IVY)pS"pR" oSavedFile = new RandomAccessFile(sName,"rw"); @{W"mc+ this.nPos = nPos; R0%M9;>1 oSavedFile.seek(nPos); AmC?qoEWQ7 } zy5FO<-> sn"z'=ch xv&h>GOg public synchronized int write(byte[] b,int nStart,int nLen) oC-v>&bW { yzv"sd[8N int n = -1; f,4erTBH try{ . P+Qu
oSavedFile.write(b,nStart,nLen); MqJ5|C.q n = nLen; t1]/Bw`j/ } Vd(n2JMtG catch(IOException e) Nte$cTjX { 9z..LD( e.printStackTrace (); ES?*w@x } ?w+ V:D _ OC@J*4. BlQX$s] return n; ^Kg n:l } fjOq@thD T;?k]4.X aydNSgu } ^H&U_ >
K?OsvX [}]yJ+) /* rlD!%gG2x **SiteInfoBean.java *= ?|n */ 15hqoo9! package NetFox; Fj(GyPFG /0 4US5En P:t .Nr" public class SiteInfoBean { FF~r&h8H %4f.<gz~r| ~`C_B]3| private String sSiteURL; //Site's URL O`Gq7=X private String sFilePath; //Saved File's Path vaGF(hfTA private String sFileName; //Saved File's Name N@L{9ak1 private int nSplitter; //Count of Splited Downloading File e"52'zAV- ~7 U~ r4fHD~#l{ public SiteInfoBean() ^:]$m;v] {//nSplitter的缺省值为5 6tndC
o; ` //default value of nSplitter is 5 ,|B-Nq this("","","",5); H#DvCw } 8'HS$J;C wV"`Du7E; "J`&"_CyZ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) +l/v`=C { {BT/P! sSiteURL= sURL; S.)Jp-&K sFilePath = sPath; }&t>j[ sFileName = sName; avL_>7q this.nSplitter = nSpiltter; r]UF<*$ V@!)Pw 4uo`XJuQ } dniU{v :#pdyJQ_ 6oNcj_?7?q public String getSSiteURL() ~e 1l7H; { b.@a,:" return sSiteURL; =i&,I{3 } 'Vo8|?.WhX %^pi XS [L-NHG public void setSSiteURL(String value) Ch_rV+ { 8s@N NjV sSiteURL = value; b1.*cIv} } sfj+-se(K. DzQBWY]
) /N"3kK,N public String getSFilePath() UnF8#~ { RhH1nf2UR return sFilePath; g4$(%] } n%s%i-[5B \A"o[A2v by
X!, public void setSFilePath(String value) B6Vlc{c5SO { e~9O#rQI sFilePath = value; BVNW1<_: } V@G#U[D X,7y| tb 6!ve6ZB[p public String getSFileName() K Lg1(W( { 3}0\W.jH return sFileName; 6'r8.~O } Sw\*$g] $'498%K2 t'vt'[~,U public void setSFileName(String value) 0jf6 z-4 { \ ;npdFy sFileName = value; ,vJt!}} } :TH cI;PG8 tcuwGs>_ U]iI8c public int getNSplitter() QO/0VB42 { f'^uuO#x return nSplitter; d,b4q&^X8 } 5^u$zfR `hi=y BO <+i(CGw public void setNSplitter(int nCount) $zMshLT { mll:rWC) nSplitter = nCount; _h~ksNm5u } amu;grH } qN)y-N.LI( ~#A}=,4> &9p!J(C /* Z<-_Y]4j **Utility.java %9J@##+ */ {ALEK package NetFox; nqcq3o*B J:L+q}A MzJCiX^ public class Utility { AK2Gm-hHK 6pt_cpbR L*(9Hti public Utility() hmO2s/~ { _M&TT]a =
xO03|T;6 n/+X3JJ } /BL:"t@- nT6y6F_e //线程睡眠 ,,'jyqD public static void sleep(int nSecond) H}^ ' { +I3jI < try{ :v&[! Thread.sleep(nSecond); SS=<\q#MS } >cu%C s=m catch(Exception e) ,ks2&e { +$dJA e.printStackTrace (); Z*%;;&? } k~Ex_2;# } m[9.'@ye v= 55{ //日志 {3~VLdy public static void log(String sMsg) ^\\3bW9}H { _R4}\3}! System.err.println(sMsg); A6N6e\*
} 7L{1S
v ~MC|
Xz+%Ym public static void log(int sMsg) -Zt!H%U { u6qK4*eAD System.err.println(sMsg); e7vm3<m4 } CdolZW-!" } 2"Os9 KD TR"C<&y$j 1K72}Gj)ZL /* \iuR+I **TestMethod.java $^Fl*:6 */ l& :EKh package NetFox; 'solCAy Q#bW"},^k 9mF' public class TestMethod { K`4rUEf}V" (!~cOx
h [TwaR public TestMethod() h3ygL" k { ///xx/weblogic60b2_win.exe jh5QIZf= try{ NVyBEAoh SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); w_9^YO!! //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 8Sbz)X SiteFileFetch fileFetch = new SiteFileFetch(bean); [);oj< fileFetch.start(); ZoW1Cc&p } z+"tAVB[i catch(Exception e){e.printStackTrace ();} uZqL'l+/y B=_w9iVN o`U}uqrO } ,+=9Rp`md }V?m
=y [ %b6$N_M{H1 public static void main(String[] args) _:x]'w% { 9^gYy&+>6] new TestMethod(); E
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