/* pD{Li\LY
**SiteFileFetch.java C$_H)I
*/ sXFD]cF
package NetFox; gaJS6*P#
import java.io.*; Wrlmo'31
import java.net.*; y ^YrGz.
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public class SiteFileFetch extends Thread { UuN(+&oD-
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SiteInfoBean siteInfoBean = null; //文件信息Bean |YH1q1l
long[] nStartPos; //开始位置 2oNlQiE_
long[] nEndPos; //结束位置 QF>H>=Za=
FileSplitterFetch[] fileSplitterFetch; //子线程对象 9:P)@UF
long nFileLength; //文件长度 Ys\l[$_`*
boolean bFirst = true; //是否第一次取文件 'h:4 Fzo<
boolean bStop = false; //停止标志 sh0O~%]g
File tmpFile; //文件下载的临时信息 9Y7 tI3
DataOutputStream output; //输出到文件的输出流 ALFw[1X
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) /q]WV^H
public SiteFileFetch(SiteInfoBean bean) throws IOException @x)z" )>
{ -wY6da*.W
siteInfoBean = bean; X[VQ 1
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); L)Kn8
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); VRD2e
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if(tmpFile.exists ())
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{ p{.EFa>H
bFirst = false; pPh$Jvo]
read_nPos(); BV<LIrAS
} w=OT^d 9n
else r8@:Ko= a
{ 7%aB>uA
nStartPos = new long[bean.getNSplitter()]; "3Ec0U \s
nEndPos = new long[bean.getNSplitter()]; ,"DkMK4%
} ?Hq`*I?b9
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public void run() D`Fl*Wc4H
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//获得文件长度 N-lXC"{)
//分割文件 {<&x9<f9
//实例FileSplitterFetch wN;o++6V
//启动FileSplitterFetch线程 ;5oY)1
//等待子线程返回 $vicxE~-E
try{ 7HFw*;
if(bFirst) C}wmoYikV
{ 9Lv`3J^~
nFileLength = getFileSize(); $YFn$.70\
if(nFileLength == -1) }KJ/WyYW
{ ^-rb&kW@:
System.err.println("File Length is not known!"); ]l`?"X|^
} J/=b1{d"n
else if(nFileLength == -2) Ws'3*HAce
{ pM.>u/=X
System.err.println("File is not access!"); I9TOBn|6
} y1FS?hSD0
else qJUu9[3'm
{ 9^>nZ6
for(int i=0;i<nStartPos.length;i++) fk;39$[
{ Q;Xb-\\
nStartPos = (long)(i*(nFileLength/nStartPos.length)); C {gYrz)
} nQb{/ TqC'
for(int i=0;i<nEndPos.length-1;i++) bv-s}UP0
{ OlQ7Yi>
nEndPos = nStartPos[i+1]; D<C ZhYJ
} Dtt[a
nEndPos[nEndPos.length-1] = nFileLength; E*i <P
} px".pYr0
} "=N[g
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//启动子线程 _T)dmhG
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; r^q@rL>
for(int i=0;i<nStartPos.length;i++) !ku5P+y$
{ h1q ?kA
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), L1
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Tz:mj
nStartPos,nEndPos,i); grp1nWAs
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); "~> # ;x{
fileSplitterFetch.start(); $x)C_WZj?
} DgGGrV`
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), VMe~aUd
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); wspZ Eu>C;
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", LSs!U
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nEndPos = " + nFileLength); LhUrVydL
// fileSplitterFetch[nPos.length-1].start(); !:'%'@uc
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//等待子线程结束 y_;LTCj?
//int count = 0; CuR.a
//是否结束while循环 MR} GxI
boolean breakWhile = false; 0sD"Hu
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while(!bStop) 0B7cpw>_J
{ ]k-<[Z;I,
write_nPos(); 7Y"CeU-S
Utility.sleep(500); $DuX1T
breakWhile = true; ZaIlo5
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for(int i=0;i<nStartPos.length;i++) ^rO3B?_
{ @doo2qqIe]
if(!fileSplitterFetch.bDownOver) .'.#bH9K
{ N|WZk2 "
breakWhile = false;
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break; t2Q40'
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} $ d? N("L
} _BHR ?I[w
if(breakWhile) e@}zp
break; EdbLAagI6
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//count++; ,1J+3ugp&
//if(count>4)
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// siteStop(); Z#0hh%E"|y
} U>PF#@ C/
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System.err.println("文件下载结束!"); *8ykE
} l?F-w;wHN
catch(Exception e){e.printStackTrace ();} ky*-THS
} O%?noW
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//获得文件长度 `3GC}u>}
public long getFileSize() 'Pyeb`AXE9
{ unn2MP'
int nFileLength = -1; DWT4D)C,U
try{ ANgfG8>
URL url = new URL(siteInfoBean.getSSiteURL()); H=Sy.
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); $!F_K
httpConnection.setRequestProperty("User-Agent","NetFox"); doM}vh)6
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int responseCode=httpConnection.getResponseCode(); U6SgV
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if(responseCode>=400) Q(Uj5 aX
{ an! ceB
processErrorCode(responseCode); V-rzn171Q)
return -2; //-2 represent access is error ^@V$'Bk
} p<hV7x-{
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String sHeader; /Hxz@=LC1
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for(int i=1;;i++) .CXe*Vbd
{ CYlZ<