/* 9tk}_+
**SiteFileFetch.java T*|?]k
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*/ AUzJ:([V
package NetFox; '00DUUa
import java.io.*; .Uha %~%
import java.net.*; &{ntx~Eq
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public class SiteFileFetch extends Thread { JFR,QUT
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SiteInfoBean siteInfoBean = null; //文件信息Bean V@e0VV3yx%
long[] nStartPos; //开始位置 @2kt6
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long[] nEndPos; //结束位置 >SSF:hI"J
FileSplitterFetch[] fileSplitterFetch; //子线程对象 SYa!IL-B
long nFileLength; //文件长度 /ExnW >wT
boolean bFirst = true; //是否第一次取文件 3P I{LU
boolean bStop = false; //停止标志 ^9qncvV
File tmpFile; //文件下载的临时信息 *RN*Bh|$
DataOutputStream output; //输出到文件的输出流 XW5r@:e
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) RrKs!2sCT
public SiteFileFetch(SiteInfoBean bean) throws IOException 7QQ1oPV
{ >*vI:MG8
siteInfoBean = bean; e,:@c3I
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); e?RHf_d3T-
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ?6tuo:gP
if(tmpFile.exists ()) 6i{W=$RQ
{ CQ#p2
bFirst = false; Jq/([
read_nPos(); E83{4A4
} ;Q?
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else B5J=q("P
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nStartPos = new long[bean.getNSplitter()]; ExY
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nEndPos = new long[bean.getNSplitter()]; .NwHr6/s*
} *8X: fq
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} g0_8:Gs}^
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public void run() YX@[z
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{ YuLW]Q?v
//获得文件长度 'OkF.bs
//分割文件 M)Ogb'@#
//实例FileSplitterFetch
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//启动FileSplitterFetch线程 u=RF6V|
//等待子线程返回 s.Yyw y
try{ ? 0nbvV5v7
if(bFirst) GZ*cV3Y`&
{ }$81FSKh
nFileLength = getFileSize(); ,%>/8*
if(nFileLength == -1) b _cD
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{ ,58D=EgFy
System.err.println("File Length is not known!"); DkQy.
} sh E>gTe
else if(nFileLength == -2) gbQrSJs!Zh
{ hZc$`V=R
System.err.println("File is not access!"); 8(5}Jo+
} g^4'42UX
else 0j_`7<,:
{ oy#Qj3M8=
for(int i=0;i<nStartPos.length;i++) m_ '
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{ ^MQ7*g6o
nStartPos = (long)(i*(nFileLength/nStartPos.length)); 9M<qk si
} }3=]1jH6
for(int i=0;i<nEndPos.length-1;i++) DoNbCVZ
{ Fag%#jxI
nEndPos = nStartPos[i+1]; o;_v'
}
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nEndPos[nEndPos.length-1] = nFileLength; !W .ooy5(
} 3%!d&j>v
} @ 5|F:J
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//启动子线程 V= !!;KR0
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; |HhUU1!
for(int i=0;i<nStartPos.length;i++) Y2QlK1.8V
{ ^hRos
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), b":cj:mxL
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), LIirOf~e;!
nStartPos,nEndPos,i); 5Y_)%u
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); {b=]JPE
fileSplitterFetch.start(); "4oY F:h
} *d?,i-Q.+
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), q%8,@xg
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); zD7\Gv
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", s?7g3H5#0k
nEndPos = " + nFileLength); Abd&p N
// fileSplitterFetch[nPos.length-1].start(); Mm+_>
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//等待子线程结束 *:aJlvk
//int count = 0; shjS^CP
//是否结束while循环 ORyFE:p$
boolean breakWhile = false; E@Q+[~H }
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while(!bStop) PIsMx -i0
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write_nPos(); o!gl
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Utility.sleep(500); ~4`LOROC
breakWhile = true; iRBUX`0
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for(int i=0;i<nStartPos.length;i++) m}'kxZTOm
{ %q`_vtUT
if(!fileSplitterFetch.bDownOver) RxjC sjg
{ @s b\0 }
breakWhile = false; q 6%jCt2'
break; 'Oyz/P(p
} cAC]%~orx
} Y2"X;`<
if(breakWhile) wFnI M2a,
break;
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//count++; pGc_Klq
//if(count>4) hg/G7Ur"
// siteStop(); *[) b}?
} 5<0&y3
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System.err.println("文件下载结束!"); Cdin"
} ]bz']`
catch(Exception e){e.printStackTrace ();} Mm;kB/1
} /EZF5_`bT
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//获得文件长度 _?x*F?5=
public long getFileSize() m}54yo
{ [y7BHikX)
int nFileLength = -1; 6FFQoE|n
try{ )hGRq'WA=
URL url = new URL(siteInfoBean.getSSiteURL()); U3}r.9/
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Y6~/H
httpConnection.setRequestProperty("User-Agent","NetFox"); w+)MrB-}
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int responseCode=httpConnection.getResponseCode(); sgW*0o
if(responseCode>=400) <7NY.zvwk]
{ =;#+8w=^
processErrorCode(responseCode); TRW{`b[
return -2; //-2 represent access is error 9tDo5
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}
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String sHeader; F'^6ra9
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for(int i=1;;i++) D[yOFJ~p)
{ Cbv$O o*
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); vPz$jeA
//Utility.log(in.readLine()); 9%55R >s$
sHeader=httpConnection.getHeaderFieldKey(i); 2+y<&[A8U
if(sHeader!=null) D/[(}o(
{ r`Y[XzT9
if(sHeader.equals("Content-Length")) biLx-F c
{ 6c>cq\~E
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); puEuv6F
break; BQmHYar
} 1AiqB Rs
} cy T,tN
else \wwY?lOe
break; MHar9)$}
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} ' P5ttI#|
catch(IOException e){e.printStackTrace ();} xXkP(^ Y
catch(Exception e){e.printStackTrace ();} fn(<
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Utility.log(nFileLength); b{q-o <