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/* fQ+\;iAU **SiteFileFetch.java .R5y:O */ R^*K6Ad package NetFox; ow6*Xr8eQ import java.io.*; RKZ6}q1n import java.net.*; ~GJN@ka4% Lq (ZcEKo cCY/gEv public class SiteFileFetch extends Thread { >^$2f&z uS+k^
# !:CJPM6j3 SiteInfoBean siteInfoBean = null; //文件信息Bean la
<npX long[] nStartPos; //开始位置 06*rWu9P3 long[] nEndPos; //结束位置 R}:KE&tq FileSplitterFetch[] fileSplitterFetch; //子线程对象 Vp}^NNYf long nFileLength; //文件长度 a%BeqSZh boolean bFirst = true; //是否第一次取文件 pV(lhDNoQ boolean bStop = false; //停止标志 }-@4vl
x$ File tmpFile; //文件下载的临时信息 '
GG=Ebt DataOutputStream output; //输出到文件的输出流 Ad$n4Ze is?2DcSl5 //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) gRJfX%*F public SiteFileFetch(SiteInfoBean bean) throws IOException |o<8}Nja6 { tMp=-" siteInfoBean = bean; RDM`9&V!jp //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); J*fBZ.NO tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ILwn&[A0 if(tmpFile.exists ()) otJ!UfpR8 { ($nrqAv4 bFirst = false; ~8T(>!hE1h read_nPos(); !yOeW0/2[ } SC &~s$P; else jJZgK$5+ { C'A]i5 nStartPos = new long[bean.getNSplitter()]; 1"#*)MF nEndPos = new long[bean.getNSplitter()]; *e#<n_%R } 1w(JEqY3h: xI*#(!x"G DI|:p!Nx L,,*gK } ]aryV?!6 JUAS$Y ~z5R{;Nbz| public void run() 8>WVodv { V DS23Bo //获得文件长度 )yK[ Zb[ //分割文件 TXXy\$ //实例FileSplitterFetch 4Kwh?8. //启动FileSplitterFetch线程 WQNE2Q //等待子线程返回 9@ 16w try{
9Z5D\yv?H if(bFirst) 3q:n'PC)C { 3]&o*Ib1`_ nFileLength = getFileSize(); evA/+F,& if(nFileLength == -1)
qFQ8 { NS)}6OI3~" System.err.println("File Length is not known!"); L6Wt3U`l } eM7Bc4V else if(nFileLength == -2) `#-P[q<v- { sbj(|1,ac System.err.println("File is not access!"); 2F#q
I1 } bI.t<; else ^D`v3d { W1B)]IHc for(int i=0;i<nStartPos.length;i++) 9[c%J*r { 6r:?;j~l nStartPos = (long)(i*(nFileLength/nStartPos.length)); 2`GE } :u8(^]N for(int i=0;i<nEndPos.length-1;i++) 7!y5
SX8C { dC\ZjZZ nEndPos = nStartPos[i+1]; u]+~VT1C,3 } .\0isO nEndPos[nEndPos.length-1] = nFileLength; S [h];eM } %1 vsN-O}8 } UO*Ymj
1 [%Bf<
J< bwM@/g%DL //启动子线程 !o=U19) fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; <s5qy- for(int i=0;i<nStartPos.length;i++) 5]I| DHmu { zk*c)s fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ##Q/I| siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), [.hyZ}B nStartPos,nEndPos,i); -Y
Bd, k3 Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 'bld,Do6 fileSplitterFetch.start(); *KY=\
%D } hQ6a~?f // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), .h&k jD siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ;$Y4xM`=m // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ")O`mXg- nEndPos = " + nFileLength); VhjM>( // fileSplitterFetch[nPos.length-1].start(); joKIrS0y Uw,2}yR ~8"8w(CG*I //等待子线程结束 ay "'#[ //int count = 0; \I"Z2N>^z //是否结束while循环 ]?x:
Qm'yo boolean breakWhile = false; \0lnxLA *BuUHjTv @/ZF` : while(!bStop) g;$Xq)Dd { ;S0Kh"A write_nPos(); LK6; ?m Utility.sleep(500); A;\7|'4 breakWhile = true; Q#h
9n] 5 &B!
o,qp +w@M~?> for(int i=0;i<nStartPos.length;i++) 2C{H$
A,pW { U9D!GKVp if(!fileSplitterFetch.bDownOver) ?(*t@
{k { E*L iM5+I breakWhile = false; "&+"@< break; R4ht6Vm3g) } n,$IfC" } [=B$5%A if(breakWhile) lWBb4 !l break; pV4Whq$ mUS_(0q OHiQ7#y //count++; w
=.Fj //if(count>4) [mEql,x3 // siteStop(); U=hlu } %IC73? =+t^ f s"Pf+aTW System.err.println("文件下载结束!"); n,B,"\fw } "#( T catch(Exception e){e.printStackTrace ();} }y9mNT } ^Y-]*8;] T\w?$ s []a[v%PkG //获得文件长度 Ag F,aZU public long getFileSize() JQ4{` =,b { gTA%uRBa int nFileLength = -1; 3%.#}O,( try{ It2" x; URL url = new URL(siteInfoBean.getSSiteURL()); )M__
t5L HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); \:'%9 x httpConnection.setRequestProperty("User-Agent","NetFox"); dCj,b$ yHxosxd<* M33_ja +L int responseCode=httpConnection.getResponseCode(); /-bO!RTwf if(responseCode>=400) aW!@f[%~F { A:7k+4 processErrorCode(responseCode); dt2$`X18 return -2; //-2 represent access is error wdUBg*X8 } WVY\&|)$ ]E] 2o 1"pw String sHeader; `,Ph/oM *N{emwIq H\XP\4#u for(int i=1;;i++) x3PD1JUf { YZ%Hu) //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); P-ri=E}> //Utility.log(in.readLine()); TDd{.8qf sHeader=httpConnection.getHeaderFieldKey(i); 6xD#? if(sHeader!=null) hEh}PX: { w`q%#qRk if(sHeader.equals("Content-Length")) ew"v{=X { e9Nk3Sj] nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); l x,"EOP break; fu90]upz~ } ^h{)Gf,+\ } q$aaA`E% else 4wrk2x[ break; bQ~j=\[r } sg+uBCGB } }1>[ catch(IOException e){e.printStackTrace ();} 2(/g} catch(Exception e){e.printStackTrace ();} i+gQE! 3E3HL7 ,\qs4& Utility.log(nFileLength); ;]_o4e6\p ?. D3'qv =zyC-;r! return nFileLength; 5Kkdo!z } V*W;OiE_3 3> Y6) gks{\ H] //保存下载信息(文件指针位置) CZ nOui private void write_nPos() $z+8<?YD { cK 06]-Y try{ =b/L?dR.- output = new DataOutputStream(new FileOutputStream(tmpFile)); -&<Whhs.@ output.writeInt(nStartPos.length); ^a#X9 for(int i=0;i<nStartPos.length;i++) Offu9`DiZ { Me=CSQqf< // output.writeLong(nPos); Br`IW output.writeLong(fileSplitterFetch.nStartPos); tO0!5#-VR output.writeLong(fileSplitterFetch.nEndPos); [H=) } 4q<=K= F output.close(); P3oI2\)*i } R+Y4| catch(IOException e){e.printStackTrace ();} qbv#I; catch(Exception e){e.printStackTrace ();} x:nKfY5 } vsa92c@T +Z85HY{ Ek6MYc8<b~ //读取保存的下载信息(文件指针位置) 9]e V?yoA8 private void read_nPos() $ aUo aI { 48Mpf=f` try{ X,LD DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ,mj@sC> int nCount = input.readInt(); ~q~MoN<R nStartPos = new long[nCount]; w+N> h;j nEndPos = new long[nCount]; aXL{TD:] for(int i=0;i<nStartPos.length;i++) {RF-sqce { &B|D;|7H nStartPos = input.readLong(); zD<or&6 nEndPos = input.readLong(); )HvnoUO0 } d'Zqaaf k% input.close(); '7oA< R } ,u/aT5\_ catch(IOException e){e.printStackTrace ();} xKFn.qFr catch(Exception e){e.printStackTrace ();} 7PkJ-JBA } Y*!qG 2z|*xS'G u?+Kkkk private void processErrorCode(int nErrorCode) EI^06q4x { 3mOtW%Hl System.err.println("Error Code : " + nErrorCode); 3YZs+d.;ib } pZeE61c/ k68F-e[i^ .B\ 5OI,] //停止文件下载 FHC\?Cg public void siteStop() $H-!j%hV { (`:O~>[N bStop = true; J.8IwN1E for(int i=0;i<nStartPos.length;i++) W16,Alf: fileSplitterFetch.splitterStop(); 4fKC 6UR q=#}
yEG RoyPrO [3 } m'f,_ \' } d20gf:@BM //负责部分文件的抓取 k70|'* Kh **FileSplitterFetch.java B`
k\ EL' */ HB7;0yt`: package NetFox; 1n@8Kv PnoPbk[< Yc'kvj)_M import java.io.*; yfm^?G|sW import java.net.*; 8)4P Ll o";Z$tAJkC zF`c8Tsx]) public class FileSplitterFetch extends Thread { rf$X>M=G rp0ZvEX d`F&aC String sURL; //File URL 4!LCR}K long nStartPos; //File Snippet Start Position 7R\oj8[ long nEndPos; //File Snippet End Position qcN'e.A int nThreadID; //Thread's ID IEzaK boolean bDownOver = false; //Downing is over AU$Uxwz4 boolean bStop = false; //Stop identical _~T!9 FileAccessI fileAccessI = null; //File Access interface 1u6^z _-#'j2 ka3u&3" public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException vo#UtN:q { +mp@b942* this.sURL = sURL; <-u8~N@43W this.nStartPos = nStart; X0n~-m"m this.nEndPos = nEnd; QI3Nc8t_2 nThreadID = id; 9J?wO9rI fileAccessI = new FileAccessI(sName,nStartPos);//定位 iURk=*Z= } Ck!VV2U# +*hm-lv? :Cp'm'omb public void run() /=gOa\k|p { 2^l[(N while(nStartPos < nEndPos && !bStop) =hMY2D { R<=zCE `: ~>+]%FPv LH@j8YB5u try{ Yx>"bv URL url = new URL(sURL); A$a1(8H HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); n2fbp\ I httpConnection.setRequestProperty("User-Agent","NetFox"); <Ce2r"U1e String sProperty = "bytes="+nStartPos+"-"; $]A/
o( httpConnection.setRequestProperty("RANGE",sProperty); uECsh2Uin Utility.log(sProperty); Gqy,u3lE "1HRLci nVI!@qW InputStream input = httpConnection.getInputStream(); :.45u}[ //logResponseHead(httpConnection); z~>pVs <,>P 0tY} :P(K2q3 byte[] b = new byte[1024]; 6MxKl
D7kl int nRead; A21N|$[ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) Ed
,D8ND { :G<E^<M\)^ nStartPos += fileAccessI.write(b,0,nRead); mI>,.&eo //if(nThreadID == 1) j7)Ao*WN // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 91xB9k1zO } U\sHx68 C|?o*fQ [l8jRT=R Utility.log("Thread " + nThreadID + " is over!"); xQ'2BAEa bDownOver = true; &CG*)bE //nPos = fileAccessI.write (b,0,nRead); |a#f\ } !eUDi( catch(Exception e){e.printStackTrace ();} w &%~3Cz. } FSRj4e1y1 } '_$uW&{NI p+Y>F\r&w I'@Ydt2 //打印回应的头信息 +|ycvHd public void logResponseHead(HttpURLConnection con) E=#0I]v[ { Ck /F9( for(int i=1;;i++) |#*'H*W { % =BMZRn String header=con.getHeaderFieldKey(i); nQ/E5y
if(header!=null) jH6&q~# //responseHeaders.put(header,httpConnection.getHeaderField(header)); E.U_W Utility.log(header+" : "+con.getHeaderField(header)); eBJUv]o % else ;-Jb1"5 break; c?%(Dp E } =dx1/4bZl| } p3}?fej&| >B>CB3U 2 6>ZW4Z public void splitterStop() UYz0PSV=. { 41_SRh7N bStop = true; LB.co4 } Rd>B0;4 +nT'I!// "jaJr5Wv=y } \fjMc }' JO@|*/mL W.w)H@]7m /* wm+})SOX9 **FileAccess.java ys#i@ *//文件访问(定位,写) 8O"U 0 package NetFox; QL$S4 J" import java.io.*; (4%YHS8 :#lIx%l 4Ua>Yw0 public class FileAccessI implements Serializable{ B7Tk4q\;Q Y+3!f#exm //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 tM#lFmdd\P RandomAccessFile oSavedFile; $.:mai long nPos; 3.)b4T e9E\% p !(t,FYeH public FileAccessI() throws IOException nL?oTze*p { ;2m<CSv!D this("",0); U/NBFc:[y: } u(!&:A9JFd 4R8G&8b O0PJ6:9P public FileAccessI(String sName,long nPos) throws IOException v0 Ir#B,[H { y4Er@8I` oSavedFile = new RandomAccessFile(sName,"rw"); i7LJ&g/) this.nPos = nPos; 9RwawTM oSavedFile.seek(nPos); <A.W 8b7D } -ti{6:H8 5%}wV,Y wl1m*`$ public synchronized int write(byte[] b,int nStart,int nLen) &Z^l=YH, { |/ }\6L] int n = -1; Xq4|uuS-O try{ ]/cd;u oSavedFile.write(b,nStart,nLen); jn.C|9/mj n = nLen; _3Cn{{ A0 } U,Mx@KdV catch(IOException e) D?M!ra { xE-7P|2 e.printStackTrace (); `O6:t\d@ } k6Cn"2q < H7[6yh fj ,m return n; KL'zXkS } <:|3rfm# {k(eNr, A*tKF&U5 } 2ij#
H
; w-$[>R[hw 1=2^90 /* ~}DQT>7$ **SiteInfoBean.java
>`jU`bR@ */ T5O _LCIws package NetFox; MEiRj]t EC6k{y}bA :"o
o> public class SiteInfoBean { 8p1ziz`4>$ @uH#qg7 _DP|-bp D private String sSiteURL; //Site's URL ~svO*o Wa private String sFilePath; //Saved File's Path Vc3mp;6" private String sFileName; //Saved File's Name gX5&d\y private int nSplitter; //Count of Splited Downloading File H0"= Vs,n "gW7<ilw
8%RI7Mg public SiteInfoBean() D,ly#Nn {//nSplitter的缺省值为5 OVk~N) //default value of nSplitter is 5 uENdI2EY8y this("","","",5);
StYzGJ } VK3it3FI>3 o5aLUWi- c3
&m9zC public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) ;pRcVL_4 { TQ9D68
, sSiteURL= sURL; eXl=i-' sFilePath = sPath; La[K!u\B sFileName = sName; UF__O.l__ this.nSplitter = nSpiltter; qO`qJ/ +7}iu/B!9 h?,\(KjP# } hF&}lPVtv P(omfD4 `xKFqx:e public String getSSiteURL() _2vd`k { H'J|U| return sSiteURL; %1:c hvS } 99 wc sNU}n<J- mE#nU(+Ta public void setSSiteURL(String value)
s* jfMY { ]qw0V
sSiteURL = value; Ov9Q?8KzM } _ :^7a3I w36(p{#vp w>~M}Ahj public String getSFilePath() 8)0L2KL' { EA{U!b]cU return sFilePath; v+1i=s2$ } %3Bpn=k> vi {uy CV.+P- public void setSFilePath(String value) $;D*
n'8Fx { ;8B.;%qkL sFilePath = value; CHaE;olo } 3 EYiQ` yqSY9EX7 keqcV23k public String getSFileName() >[*4Tjg { %(LvE}[RJ return sFileName; Ygkv7>?, } o7xgRSz\ b7h+?!H]R )fh0&Y; R public void setSFileName(String value) et$uP { qSiWnN8D
t sFileName = value; H}b\`N[nr } -fIc4u[ w}<^l zX5G;,_ public int getNSplitter() fnH3CE { xRX>|S return nSplitter; g*-2*
\ } N\R=cwk Rrqg[F + kR6A3?[ public void setNSplitter(int nCount) F!8=FTb { Q~
0Dfow? nSplitter = nCount; 68x}w
Ae } MTmO>V&O } qa!RH]B3 dbO# YBSl-G' /* d\Jji 6W **Utility.java W(&6 */ 9qH[o?] package NetFox; 3ps,uozj C{Blqf3V0 D@vMAW public class Utility { #@_1fE ^Rmoz1d SFO&=P:U public Utility() D<nxr~pQ { !A[S6-18%- c#\-%h T"W9YpZ } %ejeyc 3Xdn62[& //线程睡眠 $pFk"]= public static void sleep(int nSecond) f9']
jJ+ { 6q%ed
UED try{ }aZrou3E Thread.sleep(nSecond); sb'p-Mj } _pSIJ3O catch(Exception e) FDq{M?6i { (2%>jg0M e.printStackTrace (); c)3O/` } ahp1!=Z-= } u33zceE8 UB&2f> //日志 :QKb#4/8; public static void log(String sMsg) j)6G7T|
{ 7!-
\L7< System.err.println(sMsg); $-w5o`e } eU~?p|Np ve%l({ /c^e&D public static void log(int sMsg) T~:_}J { GYqJ!, System.err.println(sMsg); cQ,9Rnfl, } ;o >WXw } @ta?&Qf) 6z]`7`G a4u ^f5)@ /* s]bPV,"p **TestMethod.java AP
;*iyQ[ */ ~R{8.!: > package NetFox; M c@GH h,hL?imD N
^f}ui i public class TestMethod { cUC17z2D s7|3zqi `5<1EGJsD public TestMethod() IQoH@l&Xk { ///xx/weblogic60b2_win.exe sU*3\ try{ UKYupLu5 SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); ;/aB)JZ5= //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); CK Mv7 SiteFileFetch fileFetch = new SiteFileFetch(bean); Z^+a*^w~{ fileFetch.start(); SW=aHM } *2#FRA#q catch(Exception e){e.printStackTrace ();} P#F_>GB q]+)c2M i;avwP<0 } <O
bH f`Q M1gP
R X{'wWWZC public static void main(String[] args) 9;pzzZ { ^Yr|K new TestMethod(); IrUi
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