/* ?A-f_0<0
**SiteFileFetch.java =,X*40=
*/ /[n]t
package NetFox; "Jdi>{o8
import java.io.*; }rF4M1+B\
import java.net.*; ^oNcZK>
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public class SiteFileFetch extends Thread { [Mj5o<k;I
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SiteInfoBean siteInfoBean = null; //文件信息Bean Xe(]4Ux
long[] nStartPos; //开始位置 {aUv>T"c
long[] nEndPos; //结束位置 2-@t,T
FileSplitterFetch[] fileSplitterFetch; //子线程对象 :)h4SD8Y
long nFileLength; //文件长度 P/Y)Yx_(
boolean bFirst = true; //是否第一次取文件 ac1(lD
boolean bStop = false; //停止标志 A$L:,b(
File tmpFile; //文件下载的临时信息 (!Xb8rV0_
DataOutputStream output; //输出到文件的输出流 E )2/Vn2
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) vFeR)Ox's
public SiteFileFetch(SiteInfoBean bean) throws IOException S"`{ JCW$
{ 7uOtdH+
siteInfoBean = bean; {wO.nOB
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 2X(2O':Uc
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); w{]B)>! 1W
if(tmpFile.exists ()) ]I]G3 e
{ xn)F(P 0kv
bFirst = false; dP#7ev]'
read_nPos(); gADqIPu]
} Bx.hFEL
else RN;#H_
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{ z80*Ylx
nStartPos = new long[bean.getNSplitter()]; /q/^B>]
nEndPos = new long[bean.getNSplitter()]; Oi{J}2U
} K7/&~;ZwT
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} <TSps!(#
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public void run() Bgai|l
{ V9%9nR!'
//获得文件长度 L:Faq1MG
//分割文件 % 3fpIzm
//实例FileSplitterFetch c;=St1eoz
//启动FileSplitterFetch线程 Ki%)LQAg
//等待子线程返回 D%=&euB
try{ ~bis!(}p-
if(bFirst) >4HB~9dKU
{ "j.Q*Hazg
nFileLength = getFileSize(); j
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if(nFileLength == -1) )0Vj\>
{ mM_gOd
System.err.println("File Length is not known!"); H)y_[:[
} S'>KGdF
else if(nFileLength == -2) %O{FZgi%wA
{ uVXn/B
System.err.println("File is not access!"); u{dkUG1ia
} u/N_62sk5
else W&m3"~BJ
{ kHQn'r6
for(int i=0;i<nStartPos.length;i++) WMFn#.aY5
{ &?']EcU5h9
nStartPos = (long)(i*(nFileLength/nStartPos.length)); w[G-=>;
} ZT,auSX
for(int i=0;i<nEndPos.length-1;i++) PAVlZ}kj
{ Upm#:i|"
nEndPos = nStartPos[i+1]; "g(q)u >
} $lJ!f
nEndPos[nEndPos.length-1] = nFileLength; */vid(P77
} |@?='E?h
} kpk ^Uw%f
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//启动子线程 8zwH^q[`r
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; f,BJb+0
for(int i=0;i<nStartPos.length;i++) ] HRHF'4
{ DvA#zX[
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), m5hu;>gt
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), EAF\7J*
nStartPos,nEndPos,i); z,VXH ?.Zo
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 77 ?TRC
fileSplitterFetch.start(); sr~VvciIy
} `2xt%kC
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), C3 m_sv#e
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Gr3 q
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", !=+;9Ry$z
nEndPos = " + nFileLength); Q0xQxz
// fileSplitterFetch[nPos.length-1].start(); Z(J
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//等待子线程结束 ]!@!qp@
//int count = 0; J.0&gP V
//是否结束while循环 TJ,?C$3
boolean breakWhile = false; F[fs^Q6S$
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while(!bStop) u R!'v
{ }E)t,T>
write_nPos(); s2nZW pIy
Utility.sleep(500); eE{
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breakWhile = true; Y2+YmP*z`
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for(int i=0;i<nStartPos.length;i++) [c99m:*+
{ sr:hRQ27
if(!fileSplitterFetch.bDownOver) rj<-sfs
{ >waA\C}
breakWhile = false; _G)x\K]N
break; -1R7 8(1
} 2%]#rZ
} `Cu9y+t
if(breakWhile) t4-0mNBZt$
break; fY|vq
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//count++; pf3-
//if(count>4) ww\2
// siteStop(); c>C!vAg
}
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System.err.println("文件下载结束!"); 4_4|2L3
} G2J4N2hu
catch(Exception e){e.printStackTrace ();} FWS!b!#,N
} BkDq9>
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//获得文件长度 ay=f1<a
public long getFileSize() #;'*W$Wk2
{ ck8Qs08
int nFileLength = -1; TG.\C8;vFh
try{ qmnW
URL url = new URL(siteInfoBean.getSSiteURL()); ,w_C~XN$t
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); g;y*F;0@
httpConnection.setRequestProperty("User-Agent","NetFox"); 5WtI.7r
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int responseCode=httpConnection.getResponseCode(); o6r
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if(responseCode>=400) jgw+c3^R_
{ k6_OP]
processErrorCode(responseCode); ITjg]taD
return -2; //-2 represent access is error "%=K_WJ?
} a#3,qp!
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String sHeader; yIS&ZtBA
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for(int i=1;;i++) ~@iYP/=/Q
{ 1,6Y)_
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ?/KkN3Y_j[
//Utility.log(in.readLine()); H"|oI|~
sHeader=httpConnection.getHeaderFieldKey(i); ;{g>Z|
if(sHeader!=null) rrZ'Dz
{ v<?k$ e5
if(sHeader.equals("Content-Length")) PO=A^ b
{ 8noo^QO
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); xllmF)]*Y
break; 7L!q{%}
} )/t=g
} &F +hh{
else RD*.n1N1
break; %#7^b=;=
} HOVzpj
} 0&2&F=fOa<
catch(IOException e){e.printStackTrace ();} $H7T|`WI.,
catch(Exception e){e.printStackTrace ();} a3BlydSlf
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Utility.log(nFileLength); Y-*]6:{E
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return nFileLength; zMAlZ[DN
} |JCn=v@
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//保存下载信息(文件指针位置) <