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**SiteFileFetch.java FE5R
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*/ O^<6`ku
package NetFox; }.hBmhnZmI
import java.io.*; "ulaF+
import java.net.*; h\dIp`H
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public class SiteFileFetch extends Thread { /#
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SiteInfoBean siteInfoBean = null; //文件信息Bean Iq5F^rH`[
long[] nStartPos; //开始位置 hT_snb;ow
long[] nEndPos; //结束位置 _m&VdIPO
FileSplitterFetch[] fileSplitterFetch; //子线程对象 lfKknp#B/O
long nFileLength; //文件长度 L"Gi~:z
boolean bFirst = true; //是否第一次取文件 K4rr.f6
boolean bStop = false; //停止标志 t.zSJ|T_&O
File tmpFile; //文件下载的临时信息 z6!X+`&
DataOutputStream output; //输出到文件的输出流 _I!Xr!!)a0
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) lAGxE-B^a"
public SiteFileFetch(SiteInfoBean bean) throws IOException 5bAXa2Vt
{ WDX?|q9rCt
siteInfoBean = bean; ;e{2?}#8&
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); kj8zWG4KH
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); `SG70/
if(tmpFile.exists ()) 5FzRusNiA
{ I)x:NF6JO
bFirst = false; <V,?!}V
read_nPos(); jTqba:q@
} [0}471
else 5>=tNbk"s
{ eS"gHldz
nStartPos = new long[bean.getNSplitter()]; Brl6r8LGi
nEndPos = new long[bean.getNSplitter()]; EvYw$j
} <Kh\i'8
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public void run() _(jE](,
{ UqHO S{\Sz
//获得文件长度 Z 0:2x(x9
//分割文件 1_t Dp&UO
//实例FileSplitterFetch d;=,/a
//启动FileSplitterFetch线程 9j 8t<5s
//等待子线程返回 OBl8kH(b>
try{ ZMe| fn
if(bFirst) 3 x'30
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nFileLength = getFileSize(); ) &9=)G
if(nFileLength == -1) N!v@!z9Mu
{ ArEpH"}@
System.err.println("File Length is not known!"); `8-aHPF-
} 6?lg
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else if(nFileLength == -2) ^Pf&C0xXv
{ Fv: %"P^
System.err.println("File is not access!"); h<M7[p=
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for(int i=0;i<nStartPos.length;i++) A)#sh)
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); KFhn}C3
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} YfalsQ8
for(int i=0;i<nEndPos.length-1;i++) q!TbM"
{ =4D_-Q
nEndPos = nStartPos[i+1]; $P-m6
} +,[3a%c)H
nEndPos[nEndPos.length-1] = nFileLength; M~Slc*_%
} g#:XN
} GW#kaqC1
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//启动子线程 ob7_dWAG
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 'k67$H
for(int i=0;i<nStartPos.length;i++) s,v#lJ]d0W
{ EVL;"
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), /$z@_U[L
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), v (h Xk]S
nStartPos,nEndPos,i); =s]{
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 9vTQ^*bm
fileSplitterFetch.start(); 8_m9CQ6 i
} tb{{oxa,k
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), QT$1D[>
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); c #!6
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", $ddYH
nEndPos = " + nFileLength); I3Lsj}69
// fileSplitterFetch[nPos.length-1].start(); "k|`xn
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//等待子线程结束 !S!03|
//int count = 0; @qDrTH]5
//是否结束while循环 @,&m`qzd+
boolean breakWhile = false; ?GarD3#A
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while(!bStop) X-,y[ )
{ LwPM7S~ *
write_nPos(); ewG21 q$
Utility.sleep(500); h /QP=Zd
breakWhile = true; ug,|'<G+
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for(int i=0;i<nStartPos.length;i++) "V0:Lq
{ wKlCx
if(!fileSplitterFetch.bDownOver) "T
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{ $0SZlq>En
breakWhile = false; ebe@.ZVSi
break; -l@W)?$
} b=UMoWS
} 4.B*B3
if(breakWhile) vx@p;1RU`
break; l&Ghs@>Kl
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//count++; @%nUfG7TQ
//if(count>4) xJLO\B+gM
// siteStop(); TY\"@(Q|G
} <57l|}8
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System.err.println("文件下载结束!"); TQd FC\@f"
} Q|KD/s??
catch(Exception e){e.printStackTrace ();} &]F|U3
} ><MgIV
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} !<cph
//获得文件长度 w
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public long getFileSize() {U '&9_y
{ %Dls36F
int nFileLength = -1; 2 `h!:0
try{ B;]5,`#!
URL url = new URL(siteInfoBean.getSSiteURL()); )UZ0gfx
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); x5z4Yv^
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httpConnection.setRequestProperty("User-Agent","NetFox"); OG+r|.N;
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int responseCode=httpConnection.getResponseCode(); 'xZPIj+
if(responseCode>=400) K}<!{/fi)
{ %)Uvf`Xhh4
processErrorCode(responseCode); Z) i1?#
return -2; //-2 represent access is error ([CnYv
} x<j"DS}S)D
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String sHeader; Y+u-J4bj
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for(int i=1;;i++) B H0#Q5
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 1|WpKaMoq
//Utility.log(in.readLine()); sMS9!{A
sHeader=httpConnection.getHeaderFieldKey(i); &<V_[Wh"
if(sHeader!=null) ;#yu"6{
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if(sHeader.equals("Content-Length")) ?hJsN
{ bjPbl2K
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); T
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break; vMX6Bg8
} dHq )vs,L
} ow+Dd[i
else EdAR<VfleA
break; 3hXmYz(
} k g,ys4
} hHc^ZA
catch(IOException e){e.printStackTrace ();} (OyY_`
catch(Exception e){e.printStackTrace ();} f >)Tq'
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Utility.log(nFileLength); {eswe
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return nFileLength; KM5DYy2 A6
} +dgo-)kP(_
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