/* '-N `u$3Y
**SiteFileFetch.java X3-pj<JLY
*/ bC{}&a
package NetFox; iqreIMWz
import java.io.*; | (JxtQqQg
import java.net.*; !KKkw4
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#^|y0:
public class SiteFileFetch extends Thread { aY@]mMz\
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SiteInfoBean siteInfoBean = null; //文件信息Bean
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long[] nStartPos; //开始位置 O3/][\
long[] nEndPos; //结束位置 A<fKO <d
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ;4>YPH
long nFileLength; //文件长度 Tty_P,
boolean bFirst = true; //是否第一次取文件 o$;t
boolean bStop = false; //停止标志 Ti$G2dBO
File tmpFile; //文件下载的临时信息 WK)hj{k
DataOutputStream output; //输出到文件的输出流 NvW`x
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) r'/&{?Je/
public SiteFileFetch(SiteInfoBean bean) throws IOException AJ}QS?p8s
{ B52n'.
siteInfoBean = bean; O]3$$uI=QE
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); EmNJ_xY
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); =.a}
if(tmpFile.exists ()) RtO3!dGT.
{ +pXYBwH
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bFirst = false; |;sL*Vr
read_nPos(); f>!)y- 7
} IO3 p&sJ/
else cvxYuP~
{ '9@S
nStartPos = new long[bean.getNSplitter()]; p!B&&)&db
nEndPos = new long[bean.getNSplitter()]; ;)$bhNFHx
} o&0fvCpW
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} <+Eu.K&
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public void run() Z.'j7(tu
{ QOiPDu=8z
//获得文件长度 v=5H,4UMA
//分割文件 iMjoatt
//实例FileSplitterFetch 9^;Cz>6s
//启动FileSplitterFetch线程 PkX4 !
//等待子线程返回 |ecK~+
try{ |?v(?
if(bFirst) !z?&
{ f#mNx
nFileLength = getFileSize(); xB-\yWDZe
if(nFileLength == -1) k;/K']4y
{ TWE>"8]
System.err.println("File Length is not known!"); 2iM]t&^<+
} I\e/
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else if(nFileLength == -2) =r|e]4
{ @7UZ{+67*C
System.err.println("File is not access!"); !ZNirvk
} J([Y4Em5
else X1*f#3cm#
{ :m.6a4vx
for(int i=0;i<nStartPos.length;i++) 7[=\bL
{ =z>d GIT1
nStartPos = (long)(i*(nFileLength/nStartPos.length)); `vjn,2S}
} )qSjI_qt5
for(int i=0;i<nEndPos.length-1;i++) `]~1pc
{ %#t*3[
nEndPos = nStartPos[i+1]; 9*~bAgkWI
} Y"H'BT!b}
nEndPos[nEndPos.length-1] = nFileLength; ^^,cnDlm
} gGZ-B<
} 5 EhOvt8
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//启动子线程 7N:3
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; TOT#l6yqdd
for(int i=0;i<nStartPos.length;i++) M(
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{ nA*Udrcn
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 4y*"w*L
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), '+EtnWHs
nStartPos,nEndPos,i); (aC~0
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Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); `D/<*e,#
fileSplitterFetch.start(); W&~\@j]!D
} H!'Ek[s+
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ycq+C8J+Ep
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); qu\cU(H|
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", @7HHi~1JK
nEndPos = " + nFileLength); =kzuU1s
// fileSplitterFetch[nPos.length-1].start(); G&Fe2&5!w
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//等待子线程结束 [KQ#b
//int count = 0; MO^Q 8v
//是否结束while循环 X9
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boolean breakWhile = false; 3</W}]$)p
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while(!bStop) VLPPEV-u
{ 2Tp@;[!3
write_nPos(); gmqA 5W~y
Utility.sleep(500); &]"Z x0t5%
breakWhile = true; _C@A>]GT
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for(int i=0;i<nStartPos.length;i++) |LV}kG(2
{ *I:a\o~$[
if(!fileSplitterFetch.bDownOver) )\KU:_l
{ FuC#w 9_
breakWhile = false; mzf~qV^T
break; "D,}|
} &=*sN`
} R$h
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if(breakWhile) +~K)
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break; )O],$\u
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//count++; 3/N~`!zeX
//if(count>4) IM$ d~C
// siteStop(); BUCPO}I
} '4Drs}j5
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System.err.println("文件下载结束!"); M3U?\g
} (`&SV$m
catch(Exception e){e.printStackTrace ();} hG~HV{6
} *Sg6VGP
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//获得文件长度 QE|x[?7e,!
public long getFileSize() 7@R^B =pb
{ B&QEt[=s
int nFileLength = -1; 6&+}Hhe
try{ ;Q8`5h
URL url = new URL(siteInfoBean.getSSiteURL()); i>7]9gBm1q
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); X2|&\G9c
httpConnection.setRequestProperty("User-Agent","NetFox"); \3&