/* 3V~871:-~
**SiteFileFetch.java _b8&$\>
*/ A;ip
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package NetFox; ZDEz&{3U;
import java.io.*; 2F9Gx;}t5=
import java.net.*; ~+w'b7T,=
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public class SiteFileFetch extends Thread { aphfzo
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SiteInfoBean siteInfoBean = null; //文件信息Bean A|>~/OW=@
long[] nStartPos; //开始位置 <,!8xp7,~
long[] nEndPos; //结束位置 dsck:e5agZ
FileSplitterFetch[] fileSplitterFetch; //子线程对象 pu#h:nb>88
long nFileLength; //文件长度 | a001_Wv
boolean bFirst = true; //是否第一次取文件 _8x:%$
boolean bStop = false; //停止标志 u#(VR]u\7
File tmpFile; //文件下载的临时信息 {Q9?Q?
DataOutputStream output; //输出到文件的输出流 kT6h}d^/^
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ]@E_Hx{S
public SiteFileFetch(SiteInfoBean bean) throws IOException -PX Rd)~
{ {*utke]}*
siteInfoBean = bean; n
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//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); &V/n!|q<H
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); vbEAd)*S
if(tmpFile.exists ()) )!SA]>-
{ LsaE-l
bFirst = false; '5xIisP
read_nPos(); cV]c/*zA
} J>_|hg=
else zq]I"0Bi.
{ 2I'gT$h
nStartPos = new long[bean.getNSplitter()]; B(tLV9B3Q
nEndPos = new long[bean.getNSplitter()]; C\"nlNKw
} qw^kA?
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} #r5IwyL
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public void run() ,U`:IP/L
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//获得文件长度 =' %r"_`}
//分割文件 \j
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//实例FileSplitterFetch 0
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//启动FileSplitterFetch线程 fny|^F]w
//等待子线程返回 RcJ.=?I!
try{ {jz?LM
if(bFirst) O^|:q
{ D{'>G@nLQ
nFileLength = getFileSize(); eCejO59F9
if(nFileLength == -1) Cj{+DXT
{ Pw c)u&
System.err.println("File Length is not known!"); F)fCj^zL
} K]c|v
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else if(nFileLength == -2) pO]{Y?X:
{ e!V3 /*F
System.err.println("File is not access!"); #63)I9>
} 117`=9F
else R=Qa54
{ nsf.wHGZ"J
for(int i=0;i<nStartPos.length;i++) 4pU|BL\j
{ WFHS8SI
nStartPos = (long)(i*(nFileLength/nStartPos.length)); ng,64(wOY
} .`w[A
for(int i=0;i<nEndPos.length-1;i++) W`^euBr7R>
{ @34Z/%A
nEndPos = nStartPos[i+1]; {B;<R1
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nEndPos[nEndPos.length-1] = nFileLength; 3K)12x$.K
} Cu2eMUGt
} Y9}5&#
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//启动子线程 5a8[0&hA 2
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; IZ9L
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for(int i=0;i<nStartPos.length;i++) R\i8O^[
{ s,z$Vt"h*K
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ^)i5.o\
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), :eHD{=
nStartPos,nEndPos,i); He&7(mQ0^
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 4c})LAwd&
fileSplitterFetch.start(); *:r6E
} ?WVp,vP
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), YJ6y]r
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); v3zd>fDnRp
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Z~X \Z.
nEndPos = " + nFileLength); fRcs@yZnS
// fileSplitterFetch[nPos.length-1].start(); f&=WgITa
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//等待子线程结束 v@xbur\L
//int count = 0; `Zdeq.R]
//是否结束while循环
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boolean breakWhile = false; Re[x$rw
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while(!bStop) /5**2Kgv1
{ J&hzr t
write_nPos(); a9f!f %9
Utility.sleep(500); [
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breakWhile = true; 0fOx&"UAB
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for(int i=0;i<nStartPos.length;i++) ~8oti4
{ 8D
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if(!fileSplitterFetch.bDownOver) Sa8KCWgWh
{ -(oFO'Lbg
breakWhile = false; 6np
break; rT#2'-f
} L- '{
} k vuSE
if(breakWhile) pqT+lai)#
break; >$/<~j]
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//count++; 6@rebe!&=
//if(count>4) YK{E=<:
// siteStop(); l-v(~u7
} `] fud{
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System.err.println("文件下载结束!"); ^CBc~um2
} 9Z[EzKd<~'
catch(Exception e){e.printStackTrace ();} TA9Kg=_
} 1WP(=7$.
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//获得文件长度 xj!G9x<!
public long getFileSize() dvc=<!"'S
{ hvFXYq_[O
int nFileLength = -1; ?'8(']/
try{ JmP[ 9"
URL url = new URL(siteInfoBean.getSSiteURL()); HxAN&g*:
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 39yp1
httpConnection.setRequestProperty("User-Agent","NetFox"); 2 -C*RHRx
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int responseCode=httpConnection.getResponseCode(); *+UgrsRk
if(responseCode>=400) ?cB:1?\j
{ <i$ud&D
processErrorCode(responseCode); nOQvBc
return -2; //-2 represent access is error m>:zwz< ;
} SDbR(oV
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String sHeader; 2uEvu
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for(int i=1;;i++) K2o\+t
{ k|r|*|8
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); /QW-#K|S&
//Utility.log(in.readLine()); xX:N-
sHeader=httpConnection.getHeaderFieldKey(i); q}+Fm?B
if(sHeader!=null) =jWjUkm2
{ 0|chRX
if(sHeader.equals("Content-Length")) dRGgiQO
{ EpCT !e
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); %>z)Q
break; /@O$jlX5I
} -tH ^Deo
} GF/!@N
else i.5?b/l0
break; +FBUB
} 5*hA6Ex7
} (/[wM>q:r
catch(IOException e){e.printStackTrace ();} 1"fbQ^4`
catch(Exception e){e.printStackTrace ();} T!YfCw.HZ
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Utility.log(nFileLength); DQ`\HY
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return nFileLength; \\(3gB.Gd
} L3J .Oh
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//保存下载信息(文件指针位置) -RBH5+SS2
private void write_nPos() G9AQIU%ii
{ %SC%#_7
try{ %4I13|<A`
output = new DataOutputStream(new FileOutputStream(tmpFile)); GS qt:<Qs
output.writeInt(nStartPos.length); B4RP~^
for(int i=0;i<nStartPos.length;i++) /DxeG'O
{ mIYM+2p
// output.writeLong(nPos); HlgkW&