/* VH*(>^OfF
**SiteFileFetch.java E )SOcM)
*/ $w}aX0dK&
package NetFox; %ieAY-<"
import java.io.*; Z.f<6<gF
import java.net.*; JugQ +0
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public class SiteFileFetch extends Thread { _E-GHj>k
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SiteInfoBean siteInfoBean = null; //文件信息Bean ::t!W7W
long[] nStartPos; //开始位置 PU\q.y0R
long[] nEndPos; //结束位置 rMx_ <tX X
FileSplitterFetch[] fileSplitterFetch; //子线程对象 AYtcN4\/
long nFileLength; //文件长度 U}5KAi 9Z
boolean bFirst = true; //是否第一次取文件 |-?b)yuAz
boolean bStop = false; //停止标志
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File tmpFile; //文件下载的临时信息 ~0t'+.
DataOutputStream output; //输出到文件的输出流 jDR\#cGrZ
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) :~(^b;yhZ
public SiteFileFetch(SiteInfoBean bean) throws IOException ZACn_gd[5
{ K1yM'6Zw
siteInfoBean = bean; xpo}YF'5
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); SQRz8,sqkw
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); uATRZMai
if(tmpFile.exists ()) UzRF'<TWf
{ S!c@6&XJm?
bFirst = false; @uWD>(D
read_nPos(); U;Wmx
} 7E]l=Z`x
else p#I1l2nE
{ }e6:&`a xD
nStartPos = new long[bean.getNSplitter()]; 3@A k6Uh
nEndPos = new long[bean.getNSplitter()]; s;)tLJ!
} ;<Q_4
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} :"^$7
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public void run() @T T[H*,
{ jV8><5C
//获得文件长度 iSax-Mc
//分割文件 b(,[g>xH
//实例FileSplitterFetch q3:'
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//启动FileSplitterFetch线程 m/h0J03'T
//等待子线程返回 *GMRu,u2
try{ e$h\7i:(
if(bFirst) 1A
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{ G 3x1w/L
nFileLength = getFileSize(); k#M W>
if(nFileLength == -1) UJ&,9}L8
{ N:zSJW`1
System.err.println("File Length is not known!"); 1 ErYob.p
} _E 8SX
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else if(nFileLength == -2) we?#)9Q<
{ MS)bhZvO
System.err.println("File is not access!"); _u!G6
} R["7%|RV
else Fx\Re]~n
{ x]M1UBnMN
for(int i=0;i<nStartPos.length;i++) 1gr jK.x
{ gr7_oJ:R
nStartPos = (long)(i*(nFileLength/nStartPos.length)); &0TheY;srf
} K!mgh7Dx
for(int i=0;i<nEndPos.length-1;i++) ' ga2C\)
{ 5sUnEHN
nEndPos = nStartPos[i+1]; =Ch#pLmH
} $<#sCrNX
nEndPos[nEndPos.length-1] = nFileLength; '%4,!
} Ks-><-2+N
} 19DW~kvYk
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//启动子线程 HB^azHr
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; `XP Tf#9j
for(int i=0;i<nStartPos.length;i++) ];YOP%2
{ 03y<'n
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), .?TVBbc%5
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), \k8_ZJw
nStartPos,nEndPos,i); }#M|3h;q9+
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); TjdY Ck]'
fileSplitterFetch.start(); fE iEy%o
} xg&vZzcl
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), P{ o/F
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); +aap/sYp
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 5kz`_\&
nEndPos = " + nFileLength); 4RNzh``u
// fileSplitterFetch[nPos.length-1].start(); ^S@b*
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//等待子线程结束 $Re
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//int count = 0; &iivSc;#
//是否结束while循环 ljRR
boolean breakWhile = false; sj~'.Zs%
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while(!bStop) }ls>~uN
{ .u&g2Y
write_nPos(); 5q[@N J
Utility.sleep(500); N 2\,6 <
breakWhile = true; 1^mO"nX
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for(int i=0;i<nStartPos.length;i++) .*{LPfD|
{ YDJc@*D
if(!fileSplitterFetch.bDownOver) !% Md9Mu!o
{ fQdQ[
breakWhile = false; pe8MG(V
break; TaH9Nu
} KAGq\7
} ~?FKww|_*J
if(breakWhile) 9,IGZ55C
break; t<-Iiq+tL
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//count++; ~rD* Y.
//if(count>4)
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// siteStop(); }j
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} ESAh(A)8
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System.err.println("文件下载结束!"); (Y%}N(Jg
} EW)]75o{QF
catch(Exception e){e.printStackTrace ();} LdcP0G\"VG
} ,fbO}
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//获得文件长度 PeOgXg)L`z
public long getFileSize() @U,cj>K
{ \VW.>@s~
int nFileLength = -1; \%#jT GFs~
try{ ;,D7VxWhY
URL url = new URL(siteInfoBean.getSSiteURL()); \I>,j,c
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); p-Z5 {by
httpConnection.setRequestProperty("User-Agent","NetFox"); umciP
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int responseCode=httpConnection.getResponseCode(); Rh39x-`Z
if(responseCode>=400)
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{ a,X3=+_K
processErrorCode(responseCode); / wEr>[8S
return -2; //-2 represent access is error )57OZ
} 9E+^FZ e
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String sHeader; NGNn_1
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for(int i=1;;i++) lw7wvZD
{ 3=z'Ih`
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ,%u\2M
//Utility.log(in.readLine()); |yS4um(w
sHeader=httpConnection.getHeaderFieldKey(i); |m ~|
if(sHeader!=null) 0@2%pIq\
{ s`TfNwDvU
if(sHeader.equals("Content-Length")) _:T\[sz5
{ k5^'b#v
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); w1.~N`g$
break; |@ia(U~
} NWFZ:h@v
}
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else '8Yx
break; fV3J:^)F
} 27)$;1MT:
} r]TeR$NJ
catch(IOException e){e.printStackTrace ();} mIOx)`$
catch(Exception e){e.printStackTrace ();} 2e+DUZBoC
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Utility.log(nFileLength); [qc90)^Q,
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return nFileLength; |>m@]s7Z
} ?=6zgb"9-
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//保存下载信息(文件指针位置) XMpPG~XdN
private void write_nPos() @D%VV=N~[
{ 6x_8m^+m
try{ F<oJ
output = new DataOutputStream(new FileOutputStream(tmpFile)); _TH'v:C
output.writeInt(nStartPos.length); h|wyvYKZ
for(int i=0;i<nStartPos.length;i++) yQ\c<z^e
{ rN
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// output.writeLong(nPos); =5+:<e,&
output.writeLong(fileSplitterFetch.nStartPos); LqW~QEU(
output.writeLong(fileSplitterFetch.nEndPos); \SyfEcSf2v
} U4%P0}q/
output.close(); o;}o"-s
} oA`Ncu5
catch(IOException e){e.printStackTrace ();} pj'Yv
catch(Exception e){e.printStackTrace ();} ="MG>4j3.F
} zvE]4}VL?
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//读取保存的下载信息(文件指针位置) Yf|+p65g
private void read_nPos() iX}EJD{f
{ Nq-qks.&
try{ >[NNu Y~
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ZM0vB% M|
int nCount = input.readInt(); "H6DiPh.E
nStartPos = new long[nCount]; .F |yxj;I7
nEndPos = new long[nCount]; @N34 Q-l
for(int i=0;i<nStartPos.length;i++) . F_pP2A
{ C4ge_u#
nStartPos = input.readLong(); [Qr#JJ
nEndPos = input.readLong(); pLNv\M+
} 1Z|q0-Dw0
input.close(); k]w;(<
} c.r]w
catch(IOException e){e.printStackTrace ();} E<Efxb'p
catch(Exception e){e.printStackTrace ();} G8H=xr#
} 1#6c
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private void processErrorCode(int nErrorCode) y@e/G3
{ kect)=T(
System.err.println("Error Code : " + nErrorCode); sZA7)Z`7
} /U+0T>(HS
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//停止文件下载 d=yuuS/
public void siteStop() yO.q{|kX
{ XC%u`UG
bStop = true; "KSzn
for(int i=0;i<nStartPos.length;i++) H+6+I53
fileSplitterFetch.splitterStop(); M:rE^El
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