/* U}<5%"!;
**SiteFileFetch.java '/%]B@!
*/ U1}-]^\
package NetFox; +Kw:z?
import java.io.*; ?55t0
import java.net.*; :sAb'6u1EU
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public class SiteFileFetch extends Thread { FD:3;nUY7
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SiteInfoBean siteInfoBean = null; //文件信息Bean \ :To\6\Ri
long[] nStartPos; //开始位置 .R'<v^H
long[] nEndPos; //结束位置 ,RjE?M%
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ]Jz2[F"J
long nFileLength; //文件长度 !_C*2+f
boolean bFirst = true; //是否第一次取文件 RC'4%++Nz
boolean bStop = false; //停止标志 2wLnRP`*
File tmpFile; //文件下载的临时信息 /.P9n9
DataOutputStream output; //输出到文件的输出流 9.u}<m
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) _ p%=RIR
public SiteFileFetch(SiteInfoBean bean) throws IOException uF,F<%d
{ "159Q
siteInfoBean = bean; wV8_O)[
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 3m%oXT
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); C+o1.#]JM
if(tmpFile.exists ()) n-zAkKM
{ T% 74JRQ
bFirst = false; ~(i#A>
read_nPos(); O(x1Ja,&
} }huj%Pnk)
else 3-x ;_
{ *\Z9=8yK
nStartPos = new long[bean.getNSplitter()]; s^f7w
nEndPos = new long[bean.getNSplitter()]; K#Ia19au5
} yp}J+/PX}
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} _y:-_q
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public void run() e1cqzhI=nA
{ e}l F#$
//获得文件长度 tVfZ~qJ
//分割文件 )
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//实例FileSplitterFetch 6Qtyv
//启动FileSplitterFetch线程 jW]Q-
//等待子线程返回 BoJpf8e'-e
try{ bu0i#
if(bFirst) M%&1j >d
{ 0O>T{<
nFileLength = getFileSize(); Qe,jK{Y<
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if(nFileLength == -1) o3 b=)E
{ X1 DE
System.err.println("File Length is not known!"); /q1k)4?E
} YV%y
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else if(nFileLength == -2) ~mBY_[_s=
{ g[G+s4Nv
System.err.println("File is not access!"); n_~u!Ky_P
} "w7{,HP
else 5Z;iK(>IX
{ v']Tusmg
for(int i=0;i<nStartPos.length;i++)
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{
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); }H#C<:A
} _uXb 9
for(int i=0;i<nEndPos.length-1;i++) C b4.N8
{ \/XU v(
nEndPos = nStartPos[i+1]; %f)%FN.S
} 79&=MTM
nEndPos[nEndPos.length-1] = nFileLength; C#qF&n
} i.Rxx, *?
} pyUzHF0
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//启动子线程 P5Bva
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; G*s5GG@Z.
for(int i=0;i<nStartPos.length;i++) SI`ems{1>c
{ vVhSl$mW
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), mzO5&h7
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), CwjKz*'[g
nStartPos,nEndPos,i); i[Qq,MmC
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); / jLb{Ky
fileSplitterFetch.start(); ]hMs:$}
} g3|k-
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 8Y"R@'~
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); E]w2
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// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ?_-5W9
nEndPos = " + nFileLength); sA~Ijg"6
// fileSplitterFetch[nPos.length-1].start(); D`'h8:\
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//等待子线程结束 V~#8lu7;
//int count = 0; Tuz~T
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//是否结束while循环 ]qb>O:T
boolean breakWhile = false; ajCe&+
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while(!bStop) cb=ixn
{ %E8HLTEvl
write_nPos(); ~@#s<a,%;
Utility.sleep(500); j'x@P+A
breakWhile = true; -!lSk?l
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for(int i=0;i<nStartPos.length;i++) !c"EgP+
{ uS<og P
if(!fileSplitterFetch.bDownOver) qWU59:d^{
{ y@h
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breakWhile = false; Xv+!)j<
break; QVF561Yz
} yi8AzUW
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} fBb:J +
if(breakWhile) !k<k]^Z\
break; vYybQ&E/
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//count++; #/"Tb^c9
//if(count>4) C>Q|"Vf2
// siteStop(); %H[~V
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} e/uLBZ
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System.err.println("文件下载结束!"); Xz?7x0)Z
} !q~f;&rg
catch(Exception e){e.printStackTrace ();} fh*7VuAc
} ZcHd.1fXh
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//获得文件长度 u+9)B 6O1
public long getFileSize() 6<%b}q9Mo
{ ~Qd|.T
int nFileLength = -1; au E8 ^|
try{ HBNX a
URL url = new URL(siteInfoBean.getSSiteURL()); HXN. ,[
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); vA{DF{S4
httpConnection.setRequestProperty("User-Agent","NetFox"); }tW1\@
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int responseCode=httpConnection.getResponseCode(); SmS6B5j\R
if(responseCode>=400) i# fvF)
{ A 4*D3\>%u
processErrorCode(responseCode); D;h JK-Y
return -2; //-2 represent access is error 6>3zD)tG
} de9e7.(2
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String sHeader; WOeG3jMz?
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for(int i=1;;i++) 8lyNg w1
{ FzOlM-)m
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); v8 II=9
//Utility.log(in.readLine()); </B:Zjn
sHeader=httpConnection.getHeaderFieldKey(i); % EYh*g{G
if(sHeader!=null) g W?Hd/
{ g7w#;E
if(sHeader.equals("Content-Length")) o4^#W;%w
{ BC85#sbl
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); I-Q(kWc
break; L<G6)'5W
} i)/#u+Y1P
} (S?qxW?
else M<x><U#]A
break; ?y@;=x!'
} |RBL5,t^
} a# Uk:O!
catch(IOException e){e.printStackTrace ();} C,8@V`
catch(Exception e){e.printStackTrace ();} g2vt(Gf ;
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Utility.log(nFileLength); Odm1;\=Eg+
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return nFileLength; MH]?:]K9V
} 'X\C/8\
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//保存下载信息(文件指针位置) -j^G4J
private void write_nPos() _QtW)\)5\
{ o9v.]tb
try{ wuhL r(
output = new DataOutputStream(new FileOutputStream(tmpFile)); {)4@rM
output.writeInt(nStartPos.length); +3pfBE|
for(int i=0;i<nStartPos.length;i++) MnQ 6 !1Z
{ ]>0$l _V
// output.writeLong(nPos); >w1jfpQ@t$
output.writeLong(fileSplitterFetch.nStartPos); ;p"#ZS7
output.writeLong(fileSplitterFetch.nEndPos); <^+&A7Q-_
} BPy pA$
output.close(); M2A3]wd2a
} oMxpdG3y-
catch(IOException e){e.printStackTrace ();} S,s") )A1
catch(Exception e){e.printStackTrace ();} (9)uZ-BF,
} [C3wjYi
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//读取保存的下载信息(文件指针位置) t?p>L*
private void read_nPos() v){X&HbP
{ r2&/Ii+
try{ W,%qL6qV
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); zB"y^g
int nCount = input.readInt(); 3P*"$ fH
nStartPos = new long[nCount]; rY"EW"y
nEndPos = new long[nCount]; 'l1cuAP!+
for(int i=0;i<nStartPos.length;i++) InG<B,/W?
{ ^Uldyv/
nStartPos = input.readLong(); K&&YxX~3
nEndPos = input.readLong(); ]2z
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} NV^n}]ci
input.close(); xQ=L2pX
} ,f
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catch(IOException e){e.printStackTrace ();} kCKCJ}N
catch(Exception e){e.printStackTrace ();} VKr
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} &RlYw#*1.
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private void processErrorCode(int nErrorCode) {z# W-
{ (k %0|%eR
System.err.println("Error Code : " + nErrorCode); L
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} H"rIOoxf
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//停止文件下载 (!<G` ;}u
public void siteStop() =YR+`[bfI
{ n(\VP!u5r
bStop = true; Wp=:|J
for(int i=0;i<nStartPos.length;i++) 0urM@/j+
fileSplitterFetch.splitterStop(); P'k`H
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} 1c $iW>0K
} T)cbpkH4
//负责部分文件的抓取 gk"J+uM
**FileSplitterFetch.java 9riKSp:5
*/ ="[6Z$R
package NetFox; m6
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import java.io.*; 28o!>*
import java.net.*; SVT'fPm1M
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