/* 6y57m;JW/
**SiteFileFetch.java `^
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*/ teC/Uf5
package NetFox; :Nwv&+
import java.io.*; ` N
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import java.net.*; Q7{{r&|t&
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public class SiteFileFetch extends Thread { E9Dy)f]#W
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SiteInfoBean siteInfoBean = null; //文件信息Bean :ln?PT
long[] nStartPos; //开始位置 R3.w")6
long[] nEndPos; //结束位置 W]_a_5
FileSplitterFetch[] fileSplitterFetch; //子线程对象 /-t!)_zvw
long nFileLength; //文件长度 )X:Sfk
boolean bFirst = true; //是否第一次取文件 3x7fa^umR
boolean bStop = false; //停止标志 5wha _Yet
File tmpFile; //文件下载的临时信息 I+S fZ:q^
DataOutputStream output; //输出到文件的输出流 <#199`R
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) D>o u,
public SiteFileFetch(SiteInfoBean bean) throws IOException B&y?Dc
{ r!w*y3
siteInfoBean = bean; %tC[q
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Iza;~8dH5
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); SGba6b31
if(tmpFile.exists ()) {P\Ob0)q
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bFirst = false; eibkG
read_nPos(); 0>D*d'xLd
} uFhPNR2l
else jTZi<
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{ 9j5|o([J
nStartPos = new long[bean.getNSplitter()]; GoH.0eQ^
nEndPos = new long[bean.getNSplitter()]; o|c&$)m
} 5wE6 gRJ
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} }NRt:JC
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public void run() -dN`Ok<g
{ ~l.C-
//获得文件长度 59v=\; UI
//分割文件 UV av^<_
//实例FileSplitterFetch (Q
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//启动FileSplitterFetch线程 w5rtYTI
//等待子线程返回 6c27X/'Z
try{ \
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if(bFirst) wZbT*rU
{ $sZ4r>-
nFileLength = getFileSize(); gB+CM?
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if(nFileLength == -1) ygX!'evY
{ c* ~0R?
System.err.println("File Length is not known!"); *~cNUyd
} Ux{QYjFE
else if(nFileLength == -2) ~X %cbFom=
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System.err.println("File is not access!"); qu]a+cYY
}
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else R/Sm
{ [u J<]
for(int i=0;i<nStartPos.length;i++) [D(JEO@ :
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); e6qIC*C !
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for(int i=0;i<nEndPos.length-1;i++) r2PN[cLu|
{ (2"4PU8
nEndPos = nStartPos[i+1]; YcR: _ac
} VkJTcC:1
nEndPos[nEndPos.length-1] = nFileLength; z|Xt'?9&n
} 3-n&&<
} \$t{K
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//启动子线程 D&@ js!|5
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; b
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for(int i=0;i<nStartPos.length;i++) NNTrH\SU#
{ wdV)M?
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 0"+QWh
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ;- Vs|X
nStartPos,nEndPos,i); hp}rCy|01
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); {!{T,_ J
fileSplitterFetch.start(); /X#OX8gb]
} D62'bFB^
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), N"Y%*BkH
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); mUR[;;l
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ?duw0SZ
nEndPos = " + nFileLength); glKPjL *
// fileSplitterFetch[nPos.length-1].start(); Vhb~kI!x
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//等待子线程结束 9)j"|5H
//int count = 0; KBI1t$
//是否结束while循环 <Nc9F['
boolean breakWhile = false; *laFG<;
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while(!bStop) ,'l.u?SKyd
{ (4`Tf*5hHa
write_nPos(); h\Zh^B6J
Utility.sleep(500);
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breakWhile = true; @cm[]]f'l
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for(int i=0;i<nStartPos.length;i++) ,5K&f\
{ 9jl\H6JY|
if(!fileSplitterFetch.bDownOver) |c-`XC2g
{ gB,Q4acjj
breakWhile = false; 4xFAFK~lx
break; a"1LF`
} miCY?=N`
} 7Bf4ojKt
if(breakWhile) @e7_&EGR?
break; fg1uqS1rg
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//count++; X\<a|/{V A
//if(count>4) Y!|};
// siteStop(); ?q5HAIZ`
} JKCV>k
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System.err.println("文件下载结束!"); Th~pju
} (ueH@A"9;
catch(Exception e){e.printStackTrace ();} 6Hd^qouid
} D6e<1W
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//获得文件长度 :b#5cMUe
public long getFileSize() $.B}zY{
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int nFileLength = -1; _qQo}|/q
try{ :n
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URL url = new URL(siteInfoBean.getSSiteURL()); u/\Ipk/
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); otP2qAI
httpConnection.setRequestProperty("User-Agent","NetFox"); )S_%Ip
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int responseCode=httpConnection.getResponseCode(); Ja@?.gW
if(responseCode>=400) C|QJQ@bj0
{ :+ "JPF4X
processErrorCode(responseCode); A+3=OBpkW0
return -2; //-2 represent access is error rj5)b:c}
} h 'is#X 6:
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String sHeader; ab 6D &
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for(int i=1;;i++) EkN>5).
{ gJzS,g1]
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); kaCn@$
//Utility.log(in.readLine()); W*4!A\K
sHeader=httpConnection.getHeaderFieldKey(i); er !+QD,EM
if(sHeader!=null) CR|>?9V
{ `R$bx 64
if(sHeader.equals("Content-Length")) {Z[kvXf"mZ
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader));
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break; TR{dNO!q
} ayA_[{j%X
} [@s5v
else bW'Y8ok[v
break; / pR,l5
}
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} r8L'C
catch(IOException e){e.printStackTrace ();} ^}GR!990
catch(Exception e){e.printStackTrace ();} H329P*P
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